/* 
==========================================
  OJS Landing Page - Modern Redesign
  Primary Color: #d50028 (Red)
  Design: Minimalist, Professional, Clean
==========================================
*/

/* ==================== CSS Variables ==================== */
:root {
    /* Primary Color Palette - Red Theme */
    --primary-color: #d50028;
    --primary-hover: #b00021;
    --primary-light: #ff1744;
    --primary-lighter: #ffebee;
    --primary-dark: #a00020;
    
    /* Secondary Color - Darker Red */
    --secondary-color: #8b001a;
    --secondary-dark: #5c0011;
    --secondary-light: #b3001f;
    
    /* Neutral Colors */
    --dark: #1a1a1a;
    --gray-900: #2d2d2d;
    --gray-800: #424242;
    --gray-700: #616161;
    --gray-600: #757575;
    --gray-500: #9e9e9e;
    --gray-400: #bdbdbd;
    --gray-300: #e0e0e0;
    --gray-200: #eeeeee;
    --gray-100: #f5f5f5;
    --gray-50: #fafafa;
    --white: #ffffff;
    
    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-secondary: 'Merriweather', Georgia, serif;
    --font-weight-light: 300;
    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;
    
    /* Spacing System */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    --spacing-3xl: 6rem;
    
    --section-padding: 6rem 0;
    --container-padding: 0 1.5rem;
    
    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;
    --radius-full: 9999px;
    
    /* Shadows - Enhanced */
    --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.04);
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.06);
    --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 12px 24px rgba(0, 0, 0, 0.12);
    --shadow-2xl: 0 20px 40px rgba(0, 0, 0, 0.15);
    --shadow-primary: 0 8px 24px rgba(213, 0, 40, 0.2);
    --shadow-primary-lg: 0 12px 32px rgba(213, 0, 40, 0.25);
    
    /* Transitions */
    --transition-fast: all 0.15s ease;
    --transition-base: all 0.3s ease;
    --transition-slow: all 0.5s ease;
    --transition-bounce: all 0.4s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

/* ==================== Reset & Base Styles ==================== */
*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-primary);
    font-size: 1rem;
    line-height: 1.6;
    color: var(--gray-700);
    background-color: var(--white);
    overflow-x: hidden;
    font-weight: var(--font-weight-normal);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ==================== Typography ==================== */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-secondary);
    font-weight: var(--font-weight-bold);
    line-height: 1.3;
    color: var(--dark);
    margin-bottom: var(--spacing-md);
    letter-spacing: -0.02em;
}

h1 { 
    font-size: 3rem;
    line-height: 1.2;
}
h2 { 
    font-size: 2.5rem;
    line-height: 1.25;
}
h3 { 
    font-size: 1.75rem;
}
h4 { 
    font-size: 1.375rem;
}
h5 { 
    font-size: 1.125rem;
}
h6 { 
    font-size: 1rem;
}

p {
    margin-bottom: var(--spacing-md);
    line-height: 1.7;
    text-align: justify;
}

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition-base);
}

ul, ol {
    list-style: none;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

strong {
    font-weight: var(--font-weight-bold);
}

/* ==================== Container ==================== */
.container {
    max-width: 1200px;
    width: 100%;
    margin: 0 auto;
    padding: var(--container-padding);
    overflow: visible !important;
}

/* ==================== Section Header ==================== */
.section-header {
    text-align: center;
    margin-bottom: var(--spacing-xl);
    animation: fadeInUp 0.8s ease;
}

.section-title {
    font-size: 2.75rem;
    color: var(--dark);
    margin-bottom: var(--spacing-sm);
    position: relative;
    display: inline-block;
    font-weight: var(--font-weight-bold);
    letter-spacing: -0.025em;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -0.75rem;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 5px;
    background: linear-gradient(90deg, var(--primary-color), var(--primary-light));
    border-radius: var(--radius-full);
}

.section-subtitle {
    font-size: 1.125rem;
    color: var(--gray-600);
    max-width: 700px;
    margin: var(--spacing-lg) auto 0;
    line-height: 1.7;
    font-weight: var(--font-weight-normal);
}

/* ==================== Buttons ==================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    padding: 1rem 2rem;
    font-size: 1rem;
    font-weight: var(--font-weight-semibold);
    font-family: var(--font-primary);
    text-align: center;
    border: none;
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: var(--transition-base);
    text-decoration: none;
    white-space: nowrap;
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.2);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.btn:hover::before {
    width: 300px;
    height: 300px;
}

.btn-primary {
    background: var(--primary-color);
    color: var(--white);
    border: 2px solid var(--primary-color);
    box-shadow: var(--shadow-primary);
}

.btn-primary:hover {
    background: var(--primary-hover);
    border-color: var(--primary-hover);
    transform: translateY(-3px);
    box-shadow: var(--shadow-primary-lg);
}

.btn-secondary {
    background: var(--white);
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
    box-shadow: var(--shadow-sm);
}

.btn-secondary:hover {
    background: var(--primary-color);
    color: var(--white);
    border-color: var(--primary-color);
    transform: translateY(-3px);
    box-shadow: var(--shadow-primary);
}

.btn-outline {
    background: transparent;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
}

.btn-outline:hover {
    background: var(--primary-color);
    color: var(--white);
    border-color: var(--primary-color);
    transform: translateY(-3px);
    box-shadow: var(--shadow-primary);
}

.btn:active {
    transform: translateY(-1px);
}

.btn i {
    font-size: 1.125rem;
}

/* ==================== Navigation ==================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--gray-200);
    z-index: 1000;
    transition: var(--transition-base);
    overflow: visible !important;
}

.navbar.scrolled {
    box-shadow: var(--shadow-md);
    background: rgba(255, 255, 255, 0.95);
    border-bottom-color: transparent;
}

.nav-wrapper {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.25rem 0;
    transition: var(--transition-base);
    position: relative;
    width: 100%;
    overflow: visible !important;
}

.navbar.scrolled .nav-wrapper {
    padding: 1rem 0;
}

/* 
==========================================
LOGO ANIMATION - Gradient Shimmer Effect
==========================================
Hiệu ứng gradient chạy ngang liên tục trên text logo
Phong cách: Tech/Software/Modern
Màu sắc: Đỏ #d50028 chủ đạo
*/

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    /* ⚙️ CHỈNH FONT SIZE LOGO Ở ĐÂY */
    font-size: 2.25rem;
    font-weight: 700;
    font-family: var(--font-secondary);
    transition: var(--transition-bounce);
    letter-spacing: -0.01em;
    position: relative;
    text-decoration: none;
    z-index: 1;
    flex-shrink: 0;
}

.logo span {
    display: inline-block;
    position: relative;
    /* 
    🎨 CHỈNH MÀU SẮC GRADIENT Ở ĐÂY
    Màu 1: #d50028 (đỏ chính)
    Màu 2: #ff1744 (đỏ sáng)
    Màu 3: #f50057 (hồng đỏ)
    Màu 4: #ff006e (hồng sáng)
    */
    background: linear-gradient(
        90deg,
        #d50028 0%,
        #ff1744 20%,
        #f50057 40%,
        #ff006e 60%,
        #ff1744 80%,
        #d50028 100%
    );
    /* Tăng size để gradient chạy rõ hơn */
    background-size: 300% auto;
    /* Clip gradient vào text */
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    /* 
    ⏱️ CHỈNH TỐC ĐỘ ANIMATION Ở ĐÂY
    Số giây càng nhỏ = chạy càng nhanh
    Hiện tại: 3s (nhanh hơn để thấy rõ hơn)
    */
    animation: gradient-flow 3s linear infinite;
    /* Fallback cho trình duyệt cũ không support background-clip */
    color: var(--primary-color);
}

/* 
Keyframes cho gradient chạy từ trái sang phải
Animation này làm gradient di chuyển liên tục
Background-size 300% nên chạy 300% để mượt
*/
@keyframes gradient-flow {
    0% {
        background-position: 0% center;
    }
    100% {
        background-position: 300% center;
    }
}

/* Đã bỏ underline animation - chỉ giữ lại gradient shimmer trên text */

.logo:hover {
    transform: translateY(-3px);
}

.logo-img {
    height: 50px;
    width: auto;
    object-fit: contain;
    filter: drop-shadow(0 2px 8px rgba(213, 0, 40, 0.15));
    transition: var(--transition-base);
}

.logo:hover .logo-img {
    filter: drop-shadow(0 4px 12px rgba(213, 0, 40, 0.3));
    transform: scale(1.05);
}

.logo i {
    font-size: 2rem;
}

/* Navigation Menu - Font Merriweather như Logo */
.nav-menu {
    display: flex;
    gap: 2.5rem;
    align-items: center;
}

/* Hide mobile menu header on desktop */
.mobile-menu-header {
    display: none !important;
}

/* Removed conflicting mobile menu styles - using detailed mobile styles below */

.nav-link {
    font-size: 1rem;
    font-weight: 500;
    font-family: var(--font-secondary); /* Merriweather */
    color: var(--gray-800);
    position: relative;
    padding: var(--spacing-xs) var(--spacing-sm);
    transition: var(--transition-base);
    letter-spacing: -0.01em;
}

.nav-link::before {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    transform: scaleX(0);
    transform-origin: left;
    width: 100%;
    height: 3px;
    background: linear-gradient(90deg, var(--primary-color), var(--primary-light));
    border-radius: var(--radius-full);
    transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

.nav-link:hover,
.nav-link.active {
    color: var(--primary-color);
    font-weight: 600;
}

.nav-link:hover::before,
.nav-link.active::before {
    transform: scaleX(1);
}

/* Mobile Menu Toggle Button */
.nav-toggle {
    display: flex !important;
    flex-direction: column !important;
    justify-content: center !important;
    align-items: center !important;
    gap: 0.35rem !important;
    background: white !important;
    border: 3px solid red !important;
    cursor: pointer !important;
    padding: 0.5rem 0.6rem !important;
    transition: var(--transition-base);
    z-index: 9999 !important;
    position: relative !important;
    border-radius: 8px !important;
    box-shadow: 0 4px 16px rgba(255, 0, 0, 0.8) !important;
    min-width: 44px !important;
    min-height: 44px !important;
    flex-shrink: 0 !important;
    opacity: 1 !important;
    visibility: visible !important;
    margin-left: auto !important;
}

@media (max-width: 1024px) {
    .nav-toggle {
        display: flex !important;
    }
}

.nav-toggle:hover {
    transform: scale(1.05);
    border-color: var(--primary-color);
    box-shadow: 0 4px 12px rgba(213, 0, 40, 0.15);
}

.nav-toggle span {
    width: 26px !important;
    height: 2.5px !important;
    background: #d50028 !important;
    border-radius: var(--radius-full);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    display: block !important;
}

/* Mobile Menu Toggle Animation */
.nav-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(8px, 8px);
}

.nav-toggle.active span:nth-child(2) {
    opacity: 0;
    transform: translateX(-20px);
}

.nav-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(8px, -8px);
}

/* ==================== Hero Section ==================== */
/* 
==========================================
Hero Section - Aurora Background Animation
==========================================
Hiệu ứng nền gradient động kiểu aurora/northern lights
Tối ưu hiệu năng với GPU acceleration
Màu sắc: #d50028 (primary red), #3f51b5 (indigo), #ff9800 (orange)
*/

.hero {
    position: relative;
    min-height: 85vh;
    display: flex;
    align-items: center;
    justify-content: center;
    /* Background base: Gradient tĩnh làm nền */
    background: linear-gradient(135deg, 
        #fafafa 0%,
        #f5f5f5 100%
    );
    color: var(--dark);
    padding: 140px 0 80px;
    overflow: visible;
}

/* 
Aurora Blob 1 - Primary Red
Vị trí: Góc trên bên phải
Animation: Di chuyển chậm theo pattern hình 8
*/
.hero::before {
    content: '';
    position: absolute;
    top: -30%;
    right: -15%;
    width: 800px;
    height: 800px;
    /* Gradient màu đỏ primary với alpha thấp */
    background: radial-gradient(
        ellipse at center,
        rgba(213, 0, 40, 0.12) 0%,
        rgba(255, 23, 68, 0.08) 30%,
        transparent 70%
    );
    border-radius: 40% 60% 70% 30% / 40% 50% 60% 50%;
    /* Blur tạo hiệu ứng mờ mượt */
    filter: blur(50px);
    /* Animation với GPU acceleration (transform, opacity) */
    animation: aurora-float-1 20s ease-in-out infinite;
    /* Force GPU acceleration */
    will-change: transform;
    /* Layer riêng để tối ưu */
    z-index: 1;
}

/* 
Aurora Blob 2 - Indigo Blue
Vị trí: Góc dưới bên trái
Animation: Di chuyển ngược chiều với blob 1
*/
.hero::after {
    content: '';
    position: absolute;
    bottom: -25%;
    left: -10%;
    width: 700px;
    height: 700px;
    /* Gradient màu xanh indigo */
    background: radial-gradient(
        ellipse at center,
        rgba(63, 81, 181, 0.1) 0%,
        rgba(103, 58, 183, 0.06) 30%,
        transparent 70%
    );
    border-radius: 60% 40% 30% 70% / 50% 60% 40% 50%;
    filter: blur(50px);
    animation: aurora-float-2 25s ease-in-out infinite;
    will-change: transform;
    z-index: 1;
}

/* 
Animation cho Blob 1
Pattern: Hình 8 ngang với scale và rotate
*/
@keyframes aurora-float-1 {
    0%, 100% {
        transform: translate(0, 0) rotate(0deg) scale(1);
        border-radius: 40% 60% 70% 30% / 40% 50% 60% 50%;
    }
    25% {
        transform: translate(-80px, 60px) rotate(90deg) scale(1.1);
        border-radius: 50% 50% 30% 70% / 50% 50% 70% 30%;
    }
    50% {
        transform: translate(-120px, 0) rotate(180deg) scale(0.9);
        border-radius: 30% 70% 70% 30% / 50% 30% 70% 50%;
    }
    75% {
        transform: translate(-80px, -60px) rotate(270deg) scale(1.05);
        border-radius: 70% 30% 50% 50% / 30% 70% 50% 50%;
    }
}

/* 
Animation cho Blob 2
Pattern: Elipse dọc với morph shape
*/
@keyframes aurora-float-2 {
    0%, 100% {
        transform: translate(0, 0) rotate(0deg) scale(1);
        border-radius: 60% 40% 30% 70% / 50% 60% 40% 50%;
    }
    33% {
        transform: translate(70px, -50px) rotate(-60deg) scale(1.15);
        border-radius: 40% 60% 60% 40% / 60% 40% 60% 40%;
    }
    66% {
        transform: translate(100px, 40px) rotate(-120deg) scale(0.95);
        border-radius: 70% 30% 40% 60% / 40% 60% 40% 60%;
    }
}

/* 
Overlay Layer - Animated Gradient Wave
Thêm layer gradient động bổ sung
*/
.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    /* Gradient động với animation */
    background: linear-gradient(
        45deg,
        rgba(213, 0, 40, 0.06) 0%,
        rgba(255, 152, 0, 0.04) 25%,
        rgba(63, 81, 181, 0.05) 50%,
        rgba(255, 152, 0, 0.04) 75%,
        rgba(213, 0, 40, 0.06) 100%
    );
    background-size: 400% 400%;
    /* Animation gradient chạy liên tục */
    animation: gradient-wave 15s ease infinite;
    pointer-events: none;
    z-index: 1;
}

/* Animation gradient wave */
@keyframes gradient-wave {
    0% {
        background-position: 0% 50%;
    }
    50% {
        background-position: 100% 50%;
    }
    100% {
        background-position: 0% 50%;
    }
}

/* 
Aurora Blob 3 - Orange Accent
Vị trí: Giữa màn hình
Animation: Xoay tròn và pulse
*/
.hero-blob-3 {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 600px;
    height: 600px;
    /* Gradient màu cam */
    background: radial-gradient(
        circle at center,
        rgba(255, 152, 0, 0.08) 0%,
        rgba(255, 193, 7, 0.05) 30%,
        transparent 70%
    );
    border-radius: 30% 70% 70% 30% / 60% 40% 60% 40%;
    filter: blur(60px);
    /* Animation xoay và scale */
    animation: aurora-pulse 18s ease-in-out infinite;
    will-change: transform;
    z-index: 1;
}

/* Animation cho Blob 3 - Pulse và Rotate */
@keyframes aurora-pulse {
    0%, 100% {
        transform: translate(-50%, -50%) rotate(0deg) scale(1);
        border-radius: 30% 70% 70% 30% / 60% 40% 60% 40%;
    }
    25% {
        transform: translate(-50%, -50%) rotate(90deg) scale(1.2);
        border-radius: 70% 30% 30% 70% / 40% 60% 40% 60%;
    }
    50% {
        transform: translate(-50%, -50%) rotate(180deg) scale(0.8);
        border-radius: 50% 50% 50% 50% / 50% 50% 50% 50%;
    }
    75% {
        transform: translate(-50%, -50%) rotate(270deg) scale(1.1);
        border-radius: 40% 60% 40% 60% / 70% 30% 70% 30%;
    }
}

/* 
Tối ưu hiệu năng
- Sử dụng transform thay vì left/top
- will-change báo trước cho browser
- blur và opacity tốt cho GPU
- Reduce motion cho accessibility
*/
@media (prefers-reduced-motion: reduce) {
    .hero::before,
    .hero::after,
    .packages::before,
    .packages::after,
    .packages-shape-1,
    .packages-shape-2,
    .packages-shape-3 {
        animation: none;
    }
}

.hero-slider {
    position: relative;
    width: 100%;
    height: 100%;
    z-index: 2;
}

.hero-slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transform: scale(0.95);
    transition: opacity 1s cubic-bezier(0.4, 0, 0.2, 1), 
                visibility 1s cubic-bezier(0.4, 0, 0.2, 1),
                transform 1s cubic-bezier(0.4, 0, 0.2, 1);
}

.hero-slide.active {
    opacity: 1;
    visibility: visible;
    transform: scale(1);
    z-index: 2;
}

.hero-slide.prev {
    opacity: 0;
    transform: scale(0.95);
}

.hero-slide.next-entering {
    opacity: 0;
    transform: scale(1.05);
}

.hero-slide.prev-entering {
    opacity: 0;
    transform: scale(0.95);
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    max-width: 900px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
    animation: fadeInScale 1.2s cubic-bezier(0.4, 0, 0.2, 1);
}


.hero-title {
    font-size: 2.75rem;
    font-weight: var(--font-weight-bold);
    color: var(--dark);
    margin-bottom: var(--spacing-md);
    line-height: 1.15;
    letter-spacing: -0.03em;
    animation: fadeInUp 1s ease 0.2s backwards;
    background: linear-gradient(135deg, var(--dark) 0%, var(--gray-800) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--gray-600);
    margin-bottom: var(--spacing-xl);
    line-height: 1.7;
    font-weight: var(--font-weight-normal);
    animation: fadeInUp 1s ease 0.3s backwards;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.hero-description {
    font-size: 1.375rem;
    margin-bottom: var(--spacing-2xl);
    color: var(--gray-600);
    line-height: 1.8;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
    animation: fadeInUp 1s ease 0.4s backwards;
    font-weight: var(--font-weight-normal);
}

.hero-buttons {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
    animation: fadeInUp 1s ease 0.6s backwards;
    margin-bottom: var(--spacing-2xl);
}

.hero-buttons .btn {
    padding: 0.875rem 2rem;
    font-size: 1rem;
    font-weight: var(--font-weight-semibold);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
}

.hero-buttons .btn-primary {
    background: var(--primary-color);
    border: 2px solid var(--primary-color);
    box-shadow: var(--shadow-primary);
}

.hero-buttons .btn-primary:hover {
    background: var(--primary-hover);
    border-color: var(--primary-hover);
    transform: translateY(-4px);
    box-shadow: var(--shadow-primary-lg);
}

.hero-buttons .btn-secondary {
    background: var(--white);
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
}

.hero-buttons .btn-secondary:hover {
    background: var(--primary-color);
    color: var(--white);
    border-color: var(--primary-color);
    transform: translateY(-4px);
    box-shadow: var(--shadow-primary);
}

.hero-shapes {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
    z-index: 1;
    pointer-events: none;
}

.hero-shape {
    position: absolute;
    opacity: 0.06;
    animation: float 25s infinite ease-in-out;
    filter: blur(50px);
}

.hero-shape-1 {
    width: 500px;
    height: 500px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    border-radius: 40% 60% 70% 30% / 40% 50% 60% 50%;
    top: -10%;
    right: -5%;
    animation-delay: 0s;
}

.hero-shape-2 {
    width: 400px;
    height: 400px;
    background: linear-gradient(225deg, var(--primary-light), var(--primary-color));
    border-radius: 60% 40% 30% 70% / 50% 60% 40% 50%;
    bottom: -5%;
    left: -5%;
    animation-delay: 7s;
}

.hero-shape-3 {
    width: 300px;
    height: 300px;
    background: linear-gradient(315deg, var(--secondary-color), var(--primary-color));
    border-radius: 50%;
    top: 40%;
    left: -2%;
    animation-delay: 14s;
}

@keyframes float {
    0%, 100% {
        transform: translateY(0) translateX(0) rotate(0deg);
    }
    25% {
        transform: translateY(-40px) translateX(40px) rotate(90deg);
    }
    50% {
        transform: translateY(-20px) translateX(80px) rotate(180deg);
    }
    75% {
        transform: translateY(40px) translateX(40px) rotate(270deg);
    }
}

.hero-logo-wrapper {
    margin-bottom: var(--spacing-2xl);
    animation: fadeInUp 0.8s ease;
    display: flex;
    justify-content: center;
}

.hero-icon-wrapper {
    margin-bottom: var(--spacing-lg);
    margin-top: var(--spacing-xl);
    animation: fadeInUp 0.8s ease, floatIcon 5s ease-in-out infinite;
    position: relative;
}

.hero-icon-wrapper::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 100px;
    height: 100px;
    background: radial-gradient(circle, rgba(213, 0, 40, 0.1) 0%, transparent 70%);
    border-radius: 50%;
    animation: pulse 3s ease-in-out infinite;
}

.hero-icon-wrapper i {
    font-size: 4rem;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-light) 50%, var(--secondary-color) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    filter: drop-shadow(0 4px 12px rgba(213, 0, 40, 0.2));
    transition: all 0.4s cubic-bezier(0.68, -0.55, 0.265, 1.55);
    position: relative;
}

.hero-icon-wrapper:hover i {
    transform: scale(1.15) rotate(8deg);
    filter: drop-shadow(0 6px 20px rgba(213, 0, 40, 0.35));
}

@keyframes floatIcon {
    0%, 100% {
        transform: translateY(0px);
    }
    50% {
        transform: translateY(-20px);
    }
}

@keyframes pulse {
    0%, 100% {
        transform: translate(-50%, -50%) scale(1);
        opacity: 0.3;
    }
    50% {
        transform: translate(-50%, -50%) scale(1.3);
        opacity: 0.1;
    }
}


.hero-logo {
    height: 160px;
    width: auto;
    object-fit: contain;
    filter: drop-shadow(0 8px 24px rgba(213, 0, 40, 0.25)) 
            drop-shadow(0 4px 12px rgba(213, 0, 40, 0.15));
    animation: floatWithGlow 6s ease-in-out infinite;
    transition: all 0.4s ease;
}

.hero-logo:hover {
    transform: scale(1.08);
    filter: drop-shadow(0 12px 32px rgba(213, 0, 40, 0.4)) 
            drop-shadow(0 6px 16px rgba(213, 0, 40, 0.25));
}

@keyframes floatWithGlow {
    0%, 100% {
        transform: translateY(0px);
        filter: drop-shadow(0 8px 24px rgba(213, 0, 40, 0.25)) 
                drop-shadow(0 4px 12px rgba(213, 0, 40, 0.15));
    }
    25% {
        filter: drop-shadow(0 10px 28px rgba(213, 0, 40, 0.35)) 
                drop-shadow(0 5px 14px rgba(213, 0, 40, 0.2));
    }
    50% {
        transform: translateY(-15px);
        filter: drop-shadow(0 12px 32px rgba(213, 0, 40, 0.4)) 
                drop-shadow(0 6px 16px rgba(213, 0, 40, 0.25));
    }
    75% {
        filter: drop-shadow(0 10px 28px rgba(213, 0, 40, 0.35)) 
                drop-shadow(0 5px 14px rgba(213, 0, 40, 0.2));
    }
}


.hero-stats {
    display: flex;
    justify-content: center;
    gap: var(--spacing-2xl);
    margin-top: var(--spacing-2xl);
    flex-wrap: wrap;
    animation: fadeInUp 1s ease 0.8s backwards;
}

.hero-stat {
    text-align: center;
    padding: var(--spacing-lg);
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
    transition: var(--transition-bounce);
    border: 2px solid rgba(213, 0, 40, 0.1);
    min-width: 180px;
}

.hero-stat:hover {
    transform: translateY(-8px) scale(1.05);
    box-shadow: var(--shadow-2xl);
    border-color: var(--primary-color);
}

.hero-stat-icon {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: var(--spacing-md);
    filter: drop-shadow(0 2px 8px rgba(213, 0, 40, 0.2));
}

.hero-stat-icon i {
    animation: bounce 2s ease-in-out infinite;
}

.hero-stat:nth-child(2) .hero-stat-icon i {
    animation-delay: 0.2s;
}

.hero-stat:nth-child(3) .hero-stat-icon i {
    animation-delay: 0.4s;
}

.hero-stat-number {
    font-size: 2.75rem;
    font-weight: var(--font-weight-bold);
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: var(--spacing-xs);
    line-height: 1;
}

.hero-stat-label {
    font-size: 0.875rem;
    color: var(--gray-600);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    font-weight: var(--font-weight-semibold);
}

.hero-buttons .btn i {
    font-size: 1.125rem;
}

/* Slider Controls */
.slider-controls {
    position: absolute;
    bottom: 3.5rem;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    align-items: center;
    gap: var(--spacing-xl);
    z-index: 10;
}

.slider-btn {
    width: 48px;
    height: 48px;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border: 2px solid var(--primary-color);
    border-radius: 50%;
    color: var(--primary-color);
    font-size: 1.125rem;
    cursor: pointer;
    transition: var(--transition-bounce);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-md);
}

.slider-btn:hover {
    background: var(--primary-color);
    color: var(--white);
    transform: scale(1.15);
    box-shadow: var(--shadow-primary);
}

.slider-dots {
    display: flex;
    gap: var(--spacing-xs);
    align-items: center;
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(10px);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-full);
    box-shadow: var(--shadow-md);
}

.slider-dot {
    width: 8px;
    height: 8px;
    background: rgba(213, 0, 40, 0.3);
    border: none;
    border-radius: 50%;
    cursor: pointer;
    transition: all 0.4s cubic-bezier(0.68, -0.55, 0.265, 1.55);
    padding: 0;
}

.slider-dot:hover {
    background: rgba(213, 0, 40, 0.6);
    transform: scale(1.3);
}

.slider-dot.active {
    background: var(--primary-color);
    width: 32px;
    border-radius: var(--radius-full);
    box-shadow: 0 2px 8px rgba(213, 0, 40, 0.3);
}

.scroll-indicator {
    display: none;
    position: absolute;
    bottom: var(--spacing-sm);
    left: 50%;
    transform: translateX(-50%);
    animation: bounce 2.5s infinite;
    cursor: pointer;
    z-index: 10;
    opacity: 0.5;
    transition: var(--transition-base);
}

.scroll-indicator:hover {
    opacity: 1;
}

.scroll-indicator i {
    font-size: 2rem;
    color: var(--primary-color);
    filter: drop-shadow(0 2px 4px rgba(213, 0, 40, 0.2));
}

/* ==================== About Section ==================== */
.about {
    padding: var(--section-padding);
    background: var(--gray-50);
    position: relative;
    overflow: hidden; padding-bottom: 0px !important;
}

.about::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--gray-300), transparent);
}

/* CTA Full Width - Animated Background */
.cta-fullwidth {
    margin-top: var(--spacing-3xl);
    position: relative;
    width: 100vw;
    left: 50%;
    right: 50%;
    margin-left: -50vw;
    margin-right: -50vw;
    padding: var(--spacing-3xl) 0;
    overflow: hidden;
}

/* Animated gradient borders */
.cta-fullwidth::before,
.cta-fullwidth::after {
    content: '';
    position: absolute;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(
        90deg,
        var(--primary-color) 0%,
        var(--primary-light) 25%,
        var(--primary-color) 50%,
        var(--primary-light) 75%,
        var(--primary-color) 100%
    );
    background-size: 200% auto;
    animation: gradient-border-flow 4s linear infinite;
}

.cta-fullwidth::before {
    top: 0;
}

.cta-fullwidth::after {
    bottom: 0;
    animation-direction: reverse;
}

@keyframes gradient-border-flow {
    0% {
        background-position: 0% center;
    }
    100% {
        background-position: 200% center;
    }
}

/* Animated Background */
.cta-bg-animated {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(180deg, 
        var(--gray-50) 0%,
        #fafafa 20%,
        #f5f5f5 60%,
        #fafafa 100%
    );
    z-index: 0;
}

/* Animated Blobs */
.cta-bg-animated::before,
.cta-bg-animated::after {
    content: '';
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.4;
    animation: float-blob 20s ease-in-out infinite;
}

.cta-bg-animated::before {
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(213, 0, 40, 0.3) 0%, transparent 70%);
    top: -100px;
    left: -100px;
    animation: float-blob-1 15s ease-in-out infinite;
}

.cta-bg-animated::after {
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(255, 23, 68, 0.25) 0%, transparent 70%);
    bottom: -80px;
    right: -80px;
    animation: float-blob-2 18s ease-in-out infinite;
}

@keyframes float-blob-1 {
    0%, 100% {
        transform: translate(0, 0) scale(1);
    }
    33% {
        transform: translate(100px, -50px) scale(1.1);
    }
    66% {
        transform: translate(-50px, 50px) scale(0.9);
    }
}

@keyframes float-blob-2 {
    0%, 100% {
        transform: translate(0, 0) scale(1);
    }
    33% {
        transform: translate(-80px, 60px) scale(1.15);
    }
    66% {
        transform: translate(60px, -40px) scale(0.95);
    }
}

.cta-content-wrapper {
    position: relative;
    z-index: 1;
    text-align: center;
}

.cta-title {
    font-family: var(--font-secondary);
    font-size: 2rem;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: var(--spacing-xl);
    position: relative;
    z-index: 1;
}


.cta-buttons {
    display: flex;
    justify-content: center;
    gap: var(--spacing-lg);
    flex-wrap: wrap;
    position: relative;
    z-index: 1;
}

.cta-btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: 1.125rem 2rem;
    border-radius: var(--radius-lg);
    font-weight: 600;
    font-size: 1.0625rem;
    text-decoration: none;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: var(--shadow-md);
    position: relative;
    overflow: hidden;
}

.cta-btn-email {
    background: var(--primary-color);
    color: var(--white);
}

.cta-btn-phone {
    background: var(--white);
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
}

.cta-btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    transition: width 0.5s, height 0.5s;
}

.cta-btn:hover::before {
    width: 400px;
    height: 400px;
}

.cta-btn-email:hover {
    background: var(--primary-hover);
    transform: translateY(-3px);
    box-shadow: 0 8px 24px rgba(213, 0, 40, 0.25);
}

.cta-btn-phone:hover {
    background: var(--primary-color);
    color: var(--white);
    transform: translateY(-3px);
    box-shadow: 0 8px 24px rgba(213, 0, 40, 0.25);
}

.cta-btn i {
    font-size: 1.25rem;
    position: relative;
    z-index: 1;
}

.cta-btn span {
    position: relative;
    z-index: 1;
}

/* About Intro Simple - Minimalist Design */
.about-intro-simple {
    margin: 0 auto var(--spacing-2xl);
    animation: fadeInUp 0.8s ease;
}

.about-intro-simple p {
    margin-bottom: var(--spacing-md);
}

.about-intro-simple p:last-child {
    margin-bottom: 0;
}

.about-lead {
    font-size: 1.125rem;
    line-height: 1.9;
    color: var(--gray-700);
    margin: 0;
    font-weight: var(--font-weight-normal);
    text-align: center;
    word-wrap: break-word;
    overflow-wrap: break-word;
    hyphens: manual;
}

.about-description {
    font-size: 1.125rem;
    line-height: 1.8;
    color: var(--gray-700);
    margin: 0;
    font-weight: var(--font-weight-normal);
}

.brand-name {
    font-family: var(--font-secondary);
    font-size: 1.375rem;
    font-weight: 700;
    background: linear-gradient(
        90deg,
        #d50028 0%,
        #ff1744 25%,
        #f50057 50%,
        #ff006e 75%,
        #d50028 100%
    );
    background-size: 300% auto;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: gradient-flow 3s linear infinite;
    letter-spacing: -0.01em;
    white-space: nowrap;
}

.no-break {
    white-space: nowrap;
}

.about-description strong {
    color: var(--primary-color);
    font-weight: var(--font-weight-bold);
    white-space: nowrap;
}

/* About Features Grid - 3 columns with description */
.about-features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-xl);
    margin: 0 auto var(--spacing-xl);
    animation: fadeInUp 1s ease;
}

.feature-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: var(--spacing-xl);
    background: linear-gradient(135deg, 
        #fafafa 0%,
        #f5f5f5 50%,
        #fafafa 100%
    );
    border-radius: var(--radius-xl);
    border: 1px solid var(--gray-200);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

/* Animated blob background */
.feature-card::before {
    content: '';
    position: absolute;
    width: 200px;
    height: 200px;
    background: radial-gradient(circle, rgba(213, 0, 40, 0.06) 0%, transparent 70%);
    border-radius: 50%;
    filter: blur(40px);
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    opacity: 0;
    transition: opacity 0.5s ease;
}

.feature-card:hover::before {
    opacity: 1;
    animation: pulse-feature 2s ease-in-out infinite;
}

@keyframes pulse-feature {
    0%, 100% { transform: translate(-50%, -50%) scale(1); }
    50% { transform: translate(-50%, -50%) scale(1.1); }
}

.feature-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 32px rgba(213, 0, 40, 0.15);
    border-color: var(--primary-color);
    background: linear-gradient(135deg, 
        #ffffff 0%,
        #fafafa 50%,
        #f5f5f5 100%
    );
}

.feature-icon {
    width: 80px;
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    color: var(--white);
    border-radius: var(--radius-xl);
    margin-bottom: var(--spacing-lg);
    box-shadow: var(--shadow-primary);
    transition: var(--transition-bounce);
    position: relative;
    z-index: 1;
}

.feature-icon i {
    font-size: 2.25rem;
}

.feature-card:hover .feature-icon {
    transform: scale(1.1) rotate(5deg);
    box-shadow: var(--shadow-primary-lg);
}

.feature-card h4 {
    font-size: 1.25rem;
    font-weight: 600;
    font-family: var(--font-secondary);
    color: var(--dark);
    text-align: center;
    line-height: 1.3;
    margin: 0 0 var(--spacing-md) 0;
    position: relative;
    z-index: 1;
}

.feature-card:hover h4 {
    color: var(--primary-color);
}

.feature-subtitle {
    font-size: 0.875rem;
    color: var(--primary-color);
    font-weight: 600;
    text-align: center;
    line-height: 1.4;
    margin: 0 0 var(--spacing-xs) 0;
    position: relative;
    z-index: 1;
}

.feature-card p {
    font-size: 0.9375rem;
    color: var(--gray-600);
    text-align: center;
    line-height: 1.7;
    margin: 0;
    position: relative;
    z-index: 1;
}

.feature-card p:last-child {
    margin-top: var(--spacing-xs);
}

@media (max-width: 1200px) {
    .about-features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .clients-slide {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
    
    .client-item {
        padding: var(--spacing-md);
        display: flex;
        justify-content: center;
    }
    
    .client-image {
       /* max-height: 450px;*/
        width: auto;
        max-width: 100%;
    }
    
    .clients-slider-btn {
        width: 44px;
        height: 44px;
        font-size: 1.125rem;
    }
}

@media (max-width: 768px) {
    .about-features-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
}

/* Remove old about-card styles - replaced with highlights */

/* Removed .about-commitment and .commitment-box - now integrated into grid as card 4 */

/* ==================== Services Section ==================== */
.services {
    padding: var(--section-padding);
    background: var(--white);
    position: relative;
}

.services::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--gray-300), transparent);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-xl);
}

.service-card {
    background: linear-gradient(135deg, 
        #fafafa 0%,
        #f5f5f5 50%,
        #fafafa 100%
    );
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-xl);
    padding: var(--spacing-2xl);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    cursor: pointer;
    position: relative;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

/* Animated blobs background like slider */
.service-card::before,
.service-card::after {
    content: '';
    position: absolute;
    border-radius: 50%;
    filter: blur(40px);
    opacity: 0.3;
}

.service-card::before {
    width: 180px;
    height: 180px;
    background: radial-gradient(circle, rgba(213, 0, 40, 0.15) 0%, transparent 70%);
    top: -30%;
    right: -20%;
    animation: float-service-blob-1 12s ease-in-out infinite;
}

.service-card::after {
    width: 150px;
    height: 150px;
    background: radial-gradient(circle, rgba(255, 23, 68, 0.12) 0%, transparent 70%);
    bottom: -20%;
    left: -15%;
    animation: float-service-blob-2 15s ease-in-out infinite;
}

@keyframes float-service-blob-1 {
    0%, 100% {
        transform: translate(0, 0) scale(1);
    }
    33% {
        transform: translate(30px, -20px) scale(1.1);
    }
    66% {
        transform: translate(-20px, 20px) scale(0.9);
    }
}

@keyframes float-service-blob-2 {
    0%, 100% {
        transform: translate(0, 0) scale(1);
    }
    33% {
        transform: translate(-25px, 20px) scale(1.15);
    }
    66% {
        transform: translate(20px, -15px) scale(0.95);
    }
}

.service-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-2xl);
    border-color: var(--primary-color);
    background: linear-gradient(135deg, 
        #ffffff 0%,
        #fafafa 50%,
        #f5f5f5 100%
    );
}

.service-icon {
    width: 80px;
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    color: var(--white);
    border-radius: var(--radius-xl);
    font-size: 2.25rem;
    margin: 0 auto var(--spacing-lg);
    transition: var(--transition-bounce);
    box-shadow: var(--shadow-primary);
    position: relative;
    z-index: 1;
}

.service-card:hover .service-icon {
    transform: scale(1.1) rotate(5deg);
    box-shadow: var(--shadow-primary-lg);
}

.service-title {
    font-size: 1.125rem;
    margin-bottom: var(--spacing-md);
    color: var(--dark);
    font-weight: 600;
    font-family: var(--font-secondary);
    transition: var(--transition-base);
    line-height: 1.3;
    position: relative;
    z-index: 1;
}

.service-card:hover .service-title {
    color: var(--primary-color);
}

.service-description {
    color: var(--gray-600);
    line-height: 1.8;
    text-align: center;
    font-size: 0.9375rem;
    position: relative;
    z-index: 1;
}

/* ==================== Why Us Section ==================== */
/* ==================== Clients Section ==================== */
.clients {
    padding: var(--section-padding);
    background: linear-gradient(135deg, #fafafa 0%, #f5f5f5 50%, #fafafa 100%);
    position: relative;
    overflow: hidden;
}

/* 
Aurora Blob 1 - Red Primary
Vị trí: Góc trên bên phải
Animation: Pattern hình 8 với morphing shape
*/
.clients::before {
    content: '';
    position: absolute;
    top: -30%;
    right: -15%;
    width: 800px;
    height: 800px;
    /* Gradient màu đỏ primary với alpha thấp */
    background: radial-gradient(
        ellipse at center,
        rgba(213, 0, 40, 0.12) 0%,
        rgba(255, 23, 68, 0.08) 30%,
        transparent 70%
    );
    border-radius: 40% 60% 70% 30% / 40% 50% 60% 50%;
    /* Blur tạo hiệu ứng mờ mượt */
    filter: blur(50px);
    /* Animation với GPU acceleration (transform, opacity) */
    animation: clients-aurora-1 20s ease-in-out infinite;
    /* Force GPU acceleration */
    will-change: transform;
    /* Layer riêng để tối ưu */
    z-index: 0;
}

/* 
Aurora Blob 2 - Secondary Red
Vị trí: Góc dưới bên trái
Animation: Di chuyển ngược chiều với blob 1
*/
.clients::after {
    content: '';
    position: absolute;
    bottom: -25%;
    left: -10%;
    width: 700px;
    height: 700px;
    /* Gradient màu đỏ sáng */
    background: radial-gradient(
        ellipse at center,
        rgba(255, 23, 68, 0.1) 0%,
        rgba(245, 0, 87, 0.06) 30%,
        transparent 70%
    );
    border-radius: 60% 40% 30% 70% / 50% 60% 40% 50%;
    filter: blur(50px);
    animation: clients-aurora-2 25s ease-in-out infinite;
    will-change: transform;
    z-index: 0;
}

/* 
Animation cho Blob 1
Pattern: Hình 8 ngang với scale và rotate
*/
@keyframes clients-aurora-1 {
    0%, 100% {
        transform: translate(0, 0) rotate(0deg) scale(1);
        border-radius: 40% 60% 70% 30% / 40% 50% 60% 50%;
    }
    25% {
        transform: translate(-80px, 60px) rotate(90deg) scale(1.1);
        border-radius: 50% 50% 30% 70% / 50% 50% 70% 30%;
    }
    50% {
        transform: translate(-120px, 0) rotate(180deg) scale(0.9);
        border-radius: 30% 70% 70% 30% / 50% 30% 70% 50%;
    }
    75% {
        transform: translate(-80px, -60px) rotate(270deg) scale(1.05);
        border-radius: 70% 30% 50% 50% / 30% 70% 50% 50%;
    }
}

/* 
Animation cho Blob 2
Pattern: Elipse dọc với morph shape
*/
@keyframes clients-aurora-2 {
    0%, 100% {
        transform: translate(0, 0) rotate(0deg) scale(1);
        border-radius: 60% 40% 30% 70% / 50% 60% 40% 50%;
    }
    33% {
        transform: translate(70px, -50px) rotate(-60deg) scale(1.15);
        border-radius: 40% 60% 60% 40% / 60% 40% 60% 40%;
    }
    66% {
        transform: translate(100px, 40px) rotate(-120deg) scale(0.95);
        border-radius: 70% 30% 40% 60% / 40% 60% 40% 60%;
    }
}

/* Tắt animation trên thiết bị yếu */
@media (prefers-reduced-motion: reduce) {
    .clients::before,
    .clients::after {
        animation: none;
    }
}

.clients-slider-container {
    position: relative;
    max-width: 1400px;
    margin: 0 auto;
   /* padding: var(--spacing-2xl) 0;*/
    z-index: 1;
}

.clients-slider {
    position: relative;
    width: 100%;
    overflow: hidden;
}

.clients-slide {
    display: none;
    grid-template-columns: 1fr;
    gap: 0;
    animation: fadeIn 0.6s ease;
    justify-items: center;
}

.clients-slide.active {
    display: grid;
}

.client-item {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-lg);
    background: transparent;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    width: 100%;
    max-width: 800px;
    margin: 0 auto;
}

.client-image {
    width: 100%;
    max-width: 100%;
   /* max-height: 600px;*/
    height: auto;
    object-fit: contain;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    filter: brightness(1);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
    border-radius: var(--radius-lg);
}

.client-item:hover .client-image {
    transform: scale(1.05);
    filter: brightness(1.1);
}

/* Clients Slider Navigation */
.clients-slider-nav {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xl);
    margin-top: var(--spacing-2xl);
}

.clients-slider-btn {
    display: none;
}

.clients-slider-btn:hover {
    background: var(--primary-color);
    color: var(--white);
    transform: scale(1.1);
}

.clients-slider-dots {
    display: flex;
    gap: var(--spacing-sm);
    padding: var(--spacing-xs) var(--spacing-md);
    background: rgba(255, 255, 255, 0.9);
    border-radius: var(--radius-full);
    border: 1px solid var(--gray-200);
}

.clients-dot {
    width: 10px;
    height: 10px;
    border-radius: var(--radius-full);
    background: var(--gray-300);
    cursor: pointer;
    transition: all 0.3s ease;
    border: none;
    padding: 0;
}

.clients-dot.active {
    background: var(--primary-color);
    width: 28px;
}

.clients-dot:hover {
    background: var(--primary-light);
}

/* Remove old why-card styles */
.old-why-card-removed {
    color: var(--gray-600);
    line-height: 1.8;
    text-align: justify;
    position: relative;
    z-index: 1;
}

/* ==================== Process Section ==================== */
/* ==================== Process Section ==================== */
.process {
    padding: var(--section-padding);
    background: var(--white);
    position: relative;
}

.process-timeline {
    position: relative;
    max-width: 900px;
    margin: 0 auto;
}

/* Timeline line */
.process-timeline::before {
    content: '';
    position: absolute;
    top: 30px;
    left: 30px;
    width: 3px;
    height: calc(100% - 60px);
    background: linear-gradient(180deg, 
        var(--primary-color) 0%, 
        var(--primary-light) 100%
    );
    border-radius: var(--radius-full);
}

.process-step {
    position: relative;
    display: flex;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-2xl);
}

.process-step:last-child {
    margin-bottom: 0;
}

/* Step Marker - Number + Icon */
.step-marker {
    position: relative;
    z-index: 2;
    flex-shrink: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-xs);
}

.step-number {
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    border: 4px solid var(--white);
    border-radius: 50%;
    font-size: 1.5rem;
    font-weight: var(--font-weight-bold);
    color: var(--white);
    box-shadow: 0 4px 12px rgba(213, 0, 40, 0.25);
    transition: all 0.3s ease;
}

.step-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--white);
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-lg);
    font-size: 1.25rem;
    color: var(--primary-color);
    transition: all 0.3s ease;
}

.process-step:hover .step-number {
    transform: scale(1.1);
    box-shadow: 0 6px 20px rgba(213, 0, 40, 0.35);
}

.process-step:hover .step-icon {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    color: var(--white);
    border-color: var(--primary-color);
    transform: scale(1.1);
}

/* Step Content */
.step-content {
    flex: 1;
    background: linear-gradient(135deg, #fafafa 0%, #f5f5f5 50%, #fafafa 100%);
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

/* Animated blobs background */
.step-content::before {
    content: '';
    position: absolute;
    width: 180px;
    height: 180px;
    background: radial-gradient(circle, rgba(213, 0, 40, 0.08) 0%, transparent 70%);
    border-radius: 50%;
    filter: blur(40px);
    top: -50%;
    right: -20%;
    opacity: 0.5;
    animation: float-step-blob-1 15s ease-in-out infinite;
    z-index: 0;
}

.step-content::after {
    content: '';
    position: absolute;
    width: 150px;
    height: 150px;
    background: radial-gradient(circle, rgba(255, 23, 68, 0.06) 0%, transparent 70%);
    border-radius: 50%;
    filter: blur(35px);
    bottom: -40%;
    left: -15%;
    opacity: 0.5;
    animation: float-step-blob-2 18s ease-in-out infinite;
    z-index: 0;
}

@keyframes float-step-blob-1 {
    0%, 100% {
        transform: translate(0, 0) scale(1);
        opacity: 0.5;
    }
    33% {
        transform: translate(25px, -20px) scale(1.1);
        opacity: 0.6;
    }
    66% {
        transform: translate(-15px, 15px) scale(0.9);
        opacity: 0.4;
    }
}

@keyframes float-step-blob-2 {
    0%, 100% {
        transform: translate(0, 0) scale(1);
        opacity: 0.5;
    }
    33% {
        transform: translate(-20px, 25px) scale(1.15);
        opacity: 0.6;
    }
    66% {
        transform: translate(20px, -15px) scale(0.95);
        opacity: 0.45;
    }
}

/* Arrow pointer */
.step-content > * {
    position: relative;
    z-index: 1;
}

.process-step::before {
    content: '';
    position: absolute;
    top: 28px;
    left: 108px;
    width: 0;
    height: 0;
    border-top: 8px solid transparent;
    border-bottom: 8px solid transparent;
    border-right: 8px solid var(--gray-200);
    transition: border-color 0.3s ease;
    z-index: 2;
}

.process-step::after {
    content: '';
    position: absolute;
    top: 30px;
    left: 110px;
    width: 0;
    height: 0;
    border-top: 6px solid transparent;
    border-bottom: 6px solid transparent;
    border-right: 6px solid #fafafa;
    z-index: 3;
}

.process-step:hover .step-content {
    border-color: var(--primary-color);
    box-shadow: 0 8px 24px rgba(213, 0, 40, 0.15);
    transform: translateX(8px);
}

.process-step:hover::before {
    border-right-color: var(--primary-color);
}

.process-step:hover .step-content::before {
    opacity: 0.7;
}

.process-step:hover .step-content::after {
    opacity: 0.7;
}

.step-content h3 {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-sm);
    color: var(--dark);
    font-weight: var(--font-weight-bold);
    font-family: var(--font-secondary);
}

.step-content p {
    color: var(--gray-600);
    line-height: 1.7;
    margin: 0;
    text-align: justify;
    font-size: 0.9375rem;
}

/* ==================== Packages Section ==================== */
.packages {
    padding: var(--section-padding);
    background: 
        radial-gradient(ellipse at top left, rgba(213, 0, 40, 0.03) 0%, transparent 50%),
        radial-gradient(ellipse at bottom right, rgba(255, 23, 68, 0.03) 0%, transparent 50%),
        linear-gradient(135deg, #fafafa 0%, #f9f9f9 50%, #fafafa 100%);
    position: relative;
    overflow: visible;
}

/* Floating Geometric Shape 1 - Triangle */
.packages::before {
    content: '';
    position: absolute;
    top: 10%;
    right: 8%;
    width: 0;
    height: 0;
    border-left: 200px solid transparent;
    border-right: 200px solid transparent;
    border-bottom: 350px solid rgba(213, 0, 40, 0.12);
    filter: blur(50px);
    animation: float-triangle 25s ease-in-out infinite;
    z-index: 0;
}

/* Floating Geometric Shape 2 - Circle */
.packages::after {
    content: '';
    position: absolute;
    bottom: 15%;
    left: 10%;
    width: 400px;
    height: 400px;
    background: radial-gradient(
        circle at 30% 30%,
        rgba(255, 23, 68, 0.15) 0%,
        rgba(213, 0, 40, 0.08) 50%,
        transparent 75%
    );
    border-radius: 50%;
    filter: blur(60px);
    animation: float-circle 30s ease-in-out infinite reverse;
    z-index: 0;
}

/* Artistic Animations */
@keyframes float-triangle {
    0%, 100% {
        transform: translate(0, 0) rotate(0deg);
        opacity: 1;
    }
    25% {
        transform: translate(-80px, -100px) rotate(120deg);
        opacity: 0.9;
    }
    50% {
        transform: translate(-140px, -60px) rotate(240deg);
        opacity: 0.8;
    }
    75% {
        transform: translate(-60px, -120px) rotate(360deg);
        opacity: 0.85;
    }
}

@keyframes float-circle {
    0%, 100% {
        transform: translate(0, 0) scale(1);
        border-radius: 50%;
        opacity: 1;
    }
    20% {
        transform: translate(100px, -80px) scale(1.4);
        border-radius: 40% 60% 50% 50%;
        opacity: 0.9;
    }
    40% {
        transform: translate(150px, 30px) scale(0.85);
        border-radius: 60% 40% 70% 30%;
        opacity: 0.8;
    }
    60% {
        transform: translate(80px, 100px) scale(1.3);
        border-radius: 50% 50% 40% 60%;
        opacity: 0.95;
    }
    80% {
        transform: translate(30px, 60px) scale(1.15);
        border-radius: 70% 30% 50% 50%;
        opacity: 0.85;
    }
}

/* Additional Floating Shapes */
.packages-shape-1 {
    position: absolute;
    top: 25%;
    left: 5%;
    width: 300px;
    height: 300px;
    background: linear-gradient(
        135deg,
        rgba(213, 0, 40, 0.12) 0%,
        rgba(255, 23, 68, 0.06) 100%
    );
    border-radius: 30% 70% 70% 30% / 30% 30% 70% 70%;
    filter: blur(50px);
    animation: morph-shape-1 20s ease-in-out infinite;
    z-index: 0;
}

.packages-shape-2 {
    position: absolute;
    top: 60%;
    right: 12%;
    width: 280px;
    height: 280px;
    background: linear-gradient(
        225deg,
        rgba(245, 0, 87, 0.1) 0%,
        rgba(213, 0, 40, 0.05) 100%
    );
    border-radius: 63% 37% 54% 46% / 55% 48% 52% 45%;
    filter: blur(55px);
    animation: morph-shape-2 22s ease-in-out infinite;
    z-index: 0;
}

.packages-shape-3 {
    position: absolute;
    bottom: 20%;
    right: 25%;
    width: 250px;
    height: 250px;
    background: radial-gradient(
        ellipse at center,
        rgba(255, 23, 68, 0.12) 0%,
        rgba(213, 0, 40, 0.06) 50%,
        transparent 70%
    );
    border-radius: 50% 50% 30% 70% / 60% 40% 60% 40%;
    filter: blur(45px);
    animation: morph-shape-3 18s ease-in-out infinite;
    z-index: 0;
}

@keyframes morph-shape-1 {
    0%, 100% {
        transform: translate(0, 0) rotate(0deg);
        border-radius: 30% 70% 70% 30% / 30% 30% 70% 70%;
    }
    25% {
        transform: translate(40px, -50px) rotate(90deg);
        border-radius: 58% 42% 75% 25% / 76% 46% 54% 24%;
    }
    50% {
        transform: translate(80px, -20px) rotate(180deg);
        border-radius: 50% 50% 33% 67% / 55% 27% 73% 45%;
    }
    75% {
        transform: translate(40px, 30px) rotate(270deg);
        border-radius: 45% 55% 60% 40% / 33% 67% 33% 67%;
    }
}

@keyframes morph-shape-2 {
    0%, 100% {
        transform: translate(0, 0) scale(1) rotate(0deg);
        border-radius: 63% 37% 54% 46% / 55% 48% 52% 45%;
    }
    33% {
        transform: translate(-50px, 60px) scale(1.2) rotate(-120deg);
        border-radius: 40% 60% 66% 34% / 52% 63% 37% 48%;
    }
    66% {
        transform: translate(-80px, 20px) scale(0.9) rotate(-240deg);
        border-radius: 71% 29% 58% 42% / 45% 68% 32% 55%;
    }
}

@keyframes morph-shape-3 {
    0%, 100% {
        transform: translate(0, 0) scale(1);
        border-radius: 50% 50% 30% 70% / 60% 40% 60% 40%;
        opacity: 1;
    }
    20% {
        transform: translate(-50px, -60px) scale(1.4);
        border-radius: 70% 30% 50% 50% / 30% 70% 30% 70%;
        opacity: 0.9;
    }
    40% {
        transform: translate(-90px, -20px) scale(0.8);
        border-radius: 40% 60% 70% 30% / 50% 50% 50% 50%;
        opacity: 0.8;
    }
    60% {
        transform: translate(-60px, 40px) scale(1.2);
        border-radius: 60% 40% 40% 60% / 70% 30% 70% 30%;
        opacity: 0.95;
    }
    80% {
        transform: translate(-30px, -30px) scale(1.3);
        border-radius: 55% 45% 65% 35% / 45% 55% 45% 55%;
        opacity: 0.85;
    }
}

.packages-grid {
    position: relative;
    z-index: 1;
}

.packages-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
    gap: var(--spacing-xl);
    align-items: stretch;
    position: relative;
    z-index: 1;
    padding-top: 30px;
}

.package-card {
    background: var(--white);
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-2xl);
    overflow: visible;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    display: flex;
    flex-direction: column;
    z-index: 2;
}

.package-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-2xl);
    border-color: var(--primary-color);
}

.package-card.featured {
    border-color: var(--primary-color);
    border-width: 3px;
    box-shadow: var(--shadow-primary-lg);
}

.package-card.featured:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-2xl);
}

.package-badge {
    position: absolute;
    top: -20px;
    left: 50%;
    transform: translateX(-50%);
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    color: var(--white);
    padding: 0.625rem 1.5rem;
    border-radius: var(--radius-full);
    font-size: 0.8125rem;
    font-weight: var(--font-weight-semibold);
    letter-spacing: 0.03em;
    box-shadow: 0 4px 12px rgba(213, 0, 40, 0.4);
    text-transform: uppercase;
    z-index: 10;
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    animation: badge-glow 2s ease-in-out infinite;
    white-space: nowrap;
}

.package-badge i {
    font-size: 0.875rem;
    animation: crown-bounce 2s ease-in-out infinite;
}

@keyframes badge-glow {
    0%, 100% {
        box-shadow: 0 4px 12px rgba(213, 0, 40, 0.3);
    }
    50% {
        box-shadow: 0 4px 20px rgba(213, 0, 40, 0.5), 0 0 30px rgba(255, 23, 68, 0.3);
    }
}

@keyframes crown-bounce {
    0%, 100% {
        transform: translateY(0) scale(1);
    }
    50% {
        transform: translateY(-3px) scale(1.1);
    }
}

.package-header {
    padding: var(--spacing-xl) var(--spacing-lg);
    text-align: center;
    background: linear-gradient(135deg, var(--gray-50) 0%, var(--white) 100%);
    border-bottom: 2px solid var(--gray-200);
    position: relative;
    border-radius: var(--radius-2xl) var(--radius-2xl) 0 0;
}

.package-card.featured .package-header {
    background: linear-gradient(135deg, var(--primary-lighter) 0%, var(--white) 100%);
}

.package-name {
    font-size: 1.875rem;
    margin-bottom: 0;
    color: var(--dark);
    font-weight: var(--font-weight-bold);
    font-family: var(--font-secondary);
}

.package-features {
    padding: var(--spacing-xl) var(--spacing-lg);
    flex-grow: 1;
}

.package-features ul {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.package-features li {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-sm);
    color: var(--gray-700);
    line-height: 1.6;
    text-align: left;
    font-size: 0.9375rem;
}

.package-features i {
    color: var(--primary-color);
    font-size: 1.25rem;
    margin-top: 0.125rem;
    flex-shrink: 0;
}

.package-footer {
    padding: 0 var(--spacing-lg) var(--spacing-xl) var(--spacing-lg);
    text-align: center;
}

.package-footer .btn {
    width: 100%;
    padding: 1rem 2rem;
    font-size: 1.0625rem;
}

/* ==================== Contact Section ==================== */
.contact {
    padding: var(--section-padding);
    background: var(--white);
    position: relative;
}

.contact::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--gray-300), transparent);
}

.contact-wrapper {
    display: flex;
    justify-content: center;
    max-width: 800px;
    margin: 0 auto;
}

.contact-info {
    background: linear-gradient(135deg, var(--gray-50) 0%, var(--primary-lighter) 100%);
    border-radius: var(--radius-2xl);
    padding: var(--spacing-2xl);
    border: 2px solid var(--primary-color);
    box-shadow: var(--shadow-lg);
}

.contact-info h3 {
    font-size: 2rem;
    margin-bottom: var(--spacing-xl);
    color: var(--dark);
    font-weight: var(--font-weight-bold);
}

.contact-item {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
    transition: var(--transition-base);
    padding: var(--spacing-md);
    border-radius: var(--radius-lg);
}

.contact-item:hover {
    background: rgba(255, 255, 255, 0.6);
    transform: translateX(8px);
}

.contact-item:last-child {
    margin-bottom: 0;
}

.contact-icon {
    flex-shrink: 0;
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    color: var(--white);
    border-radius: var(--radius-xl);
    font-size: 1.5rem;
    box-shadow: var(--shadow-primary);
    transition: var(--transition-bounce);
}

.contact-item:hover .contact-icon {
    transform: scale(1.1) rotate(5deg);
}

.contact-details h4 {
    font-size: 1.125rem;
    margin-bottom: var(--spacing-xs);
    color: var(--dark);
    font-weight: var(--font-weight-semibold);
}

.contact-details p {
    color: var(--gray-600);
    line-height: 1.7;
    margin: 0;
}

.contact-form-wrapper {
    background: var(--gray-50);
    border-radius: var(--radius-2xl);
    padding: var(--spacing-2xl);
    border: 2px solid var(--gray-200);
    box-shadow: var(--shadow-lg);
    width: 100%;
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.form-group {
    display: flex;
    flex-direction: column;
}

.form-group label {
    font-size: 0.9375rem;
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--spacing-xs);
    color: var(--dark);
}

.required {
    color: var(--primary-color);
}

.form-group input,
.form-group textarea {
    padding: var(--spacing-md);
    font-family: var(--font-primary);
    font-size: 1rem;
    border: 2px solid var(--gray-300);
    border-radius: var(--radius-lg);
    transition: var(--transition-base);
    background: var(--white);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 4px rgba(213, 0, 40, 0.1);
    transform: translateY(-2px);
}

.form-group textarea {
    resize: vertical;
    min-height: 140px;
}

.btn-submit {
    width: 100%;
    position: relative;
    padding: 1.125rem 2rem;
    margin-top: var(--spacing-sm);
}

.btn-loading {
    display: none;
}

.form-message {
    padding: var(--spacing-md);
    border-radius: var(--radius-lg);
    text-align: center;
    font-weight: var(--font-weight-medium);
    display: none;
}

.form-message.success {
    display: block;
    background: #d1fae5;
    color: #065f46;
    border: 2px solid #059669;
}

.form-message.error {
    display: block;
    background: #fee2e2;
    color: #991b1b;
    border: 2px solid #dc2626;
}

/* ==================== Footer ==================== */
.footer {
    background: linear-gradient(135deg, var(--dark) 0%, var(--gray-900) 50%, var(--secondary-color) 100%);
    color: rgba(255, 255, 255, 0.9);
    padding: var(--spacing-3xl) 0 var(--spacing-lg);
    position: relative;
    overflow: hidden;
}

.footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
    gap: var(--spacing-2xl);
    margin-bottom: var(--spacing-2xl);
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 2.5rem;
    font-weight: 700;
    font-family: var(--font-secondary);
    color: var(--white);
    margin-bottom: var(--spacing-md);
    letter-spacing: -0.01em;
}

.footer-logo .logo-img {
    height: 50px;
    width: auto;
    object-fit: contain;
    filter: brightness(0) invert(1) drop-shadow(0 2px 8px rgba(255, 255, 255, 0.2));
}

.footer-logo i {
    font-size: 2rem;
    color: var(--primary-light);
}

.footer-description {
    color: rgba(255, 255, 255, 0.8);
    line-height: 1.8;
    text-align: justify;
    font-size: 0.9375rem;
}

.footer-col h4 {
    color: var(--white);
    font-size: 1.125rem;
    margin-bottom: var(--spacing-md);
    font-weight: var(--font-weight-semibold);
    position: relative;
    padding-bottom: var(--spacing-sm);
}

.footer-col h4::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 40px;
    height: 3px;
    background: linear-gradient(90deg, var(--primary-color), var(--primary-light));
    border-radius: var(--radius-full);
}

.footer-col ul {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.footer-col a {
    color: rgba(255, 255, 255, 0.75);
    transition: var(--transition-base);
    display: inline-flex;
    align-items: center;
    font-size: 0.9375rem;
}

.footer-col a:hover {
    color: var(--white);
    padding-left: var(--spacing-xs);
    transform: translateX(4px);
}

.social-links {
    display: flex;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
}

.social-links a {
    width: 45px;
    height: 45px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-lg);
    transition: var(--transition-bounce);
}

.social-links a:hover {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    border-color: var(--primary-light);
    transform: translateY(-5px) rotate(5deg);
    box-shadow: var(--shadow-primary);
}

.footer-contact {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.footer-contact p {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: rgba(255, 255, 255, 0.8);
    font-size: 0.9375rem;
}

.footer-contact a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    transition: all 0.3s ease;
}

.footer-contact a:hover {
    color: var(--primary-light);
    text-decoration: underline;
}

.footer-contact i {
    color: var(--primary-light);
    font-size: 1.125rem;
}

.footer-bottom {
    padding-top: var(--spacing-lg);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    text-align: center;
}

.footer-bottom p {
    color: rgba(255, 255, 255, 0.6);
    margin-bottom: var(--spacing-xs);
    font-size: 0.9375rem;
}

.footer-bottom i {
    color: var(--primary-light);
    animation: heartbeat 1.5s ease-in-out infinite;
}

@keyframes heartbeat {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.1);
    }
}

/* ==================== Back to Top Button ==================== */
.back-to-top {
    position: fixed;
    bottom: var(--spacing-lg);
    right: var(--spacing-lg);
    width: 56px;
    height: 56px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    color: var(--white);
    border: 2px solid var(--white);
    border-radius: var(--radius-xl);
    font-size: 1.25rem;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition-bounce);
    z-index: 999;
    box-shadow: var(--shadow-primary-lg);
    display: flex;
    align-items: center;
    justify-content: center;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    background: linear-gradient(135deg, var(--primary-hover), var(--primary-color));
    transform: translateY(-5px) scale(1.1);
    box-shadow: var(--shadow-2xl);
    border-color: var(--primary-lighter);
}

.back-to-top:active {
    transform: translateY(-3px) scale(1.05);
}

/* ==================== Animations ==================== */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(40px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInScale {
    from {
        opacity: 0;
        transform: scale(0.9);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateX(-50%) translateY(0);
    }
    40% {
        transform: translateX(-50%) translateY(-12px);
    }
    60% {
        transform: translateX(-50%) translateY(-6px);
    }
}

@keyframes slideInLeft {
    from {
        opacity: 0;
        transform: translateX(-50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes zoomIn {
    from {
        opacity: 0;
        transform: scale(0.8);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

/* ==================== Responsive Design ==================== */

/* Large Tablet & Small Desktop (769px - 1024px) */
@media (max-width: 1024px) {
    /* Hide main logo on mobile */
    .nav-wrapper > a.logo {
        display: none !important;
    }
    
    :root {
        --section-padding: 5rem 0;
    }
    
    .container {
        padding: 0 var(--spacing-lg);
    }
    
    h1 {
        font-size: 2.75rem;
    }
    
    h2 {
        font-size: 2.25rem;
    }
    
    .section-title {
        font-size: 2.5rem;
    }
    
    .hero-title {
        font-size: 3rem;
    }
    
    
    .services-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .footer-content {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .contact-wrapper {
        gap: var(--spacing-2xl);
    }
}

/* Tablet (max-width: 768px) */
@media (max-width: 768px) {
    :root {
        --section-padding: 4rem 0;
        --spacing-xs: 0.375rem;
        --spacing-sm: 0.75rem;
        --spacing-md: 1.25rem;
        --spacing-lg: 1.75rem;
        --spacing-xl: 2.5rem;
        --spacing-2xl: 3.5rem;
        --spacing-3xl: 5rem;
    }
    
    h1 { font-size: 2.25rem; }
    h2 { font-size: 2rem; }
    h3 { font-size: 1.375rem; }
    
    .section-title {
        font-size: 2.25rem;
    }
    
    .section-subtitle {
        font-size: 1.0625rem;
    }
    
    /* Navigation Mobile - Professional Slide-in Menu */
    .navbar {
        box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
    }
    
    .nav-wrapper {
        padding: 1rem 0;
    }
    
    /* Hide main logo on mobile - using mobile menu logo instead */
    .nav-wrapper > a.logo {
        display: none !important;
    }
    
    .logo-img {
        height: 40px;
    }
    
    .nav-toggle {
        display: flex !important;
        opacity: 1 !important;
        visibility: visible !important;
    }
    
    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 340px;
        max-width: 85%;
        height: 100vh;
        background: #ffffff;
        flex-direction: column;
        padding: 0;
        gap: 0;
        box-shadow: -8px 0 32px rgba(0, 0, 0, 0.2);
        transition: right 0.4s cubic-bezier(0.4, 0, 0.2, 1);
        z-index: 1001;
        overflow-y: auto;
        display: flex !important;
    }
    
    .nav-menu.active {
        right: 0 !important;
    }
    
    /* Mobile Menu Header */
    .mobile-menu-header {
        display: none;
        width: 100%;
        padding: 24px 28px;
        background: linear-gradient(135deg, #d50028 0%, #b8001f 100%);
        align-items: center;
        justify-content: space-between;
        position: sticky;
        top: 0;
        z-index: 10;
        box-shadow: 0 4px 12px rgba(213, 0, 40, 0.2);
    }
    
    .mobile-menu-logo {
        font-size: 1.625rem;
        font-weight: 700;
        color: white;
        letter-spacing: 0.5px;
    }
    
    .mobile-menu-close {
        width: 44px;
        height: 44px;
        background: rgba(255, 255, 255, 0.2);
        border: none;
        border-radius: 10px;
        cursor: pointer;
        display: flex;
        align-items: center;
        justify-content: center;
        transition: all 0.3s ease;
        position: relative;
    }
    
    .close-icon {
        position: relative;
        width: 24px;
        height: 24px;
        display: flex;
        align-items: center;
        justify-content: center;
    }
    
    .close-icon::before,
    .close-icon::after {
        content: '';
        position: absolute;
        width: 24px;
        height: 3px;
        background: white;
        border-radius: 2px;
    }
    
    .close-icon::before {
        transform: rotate(45deg);
    }
    
    .close-icon::after {
        transform: rotate(-45deg);
    }
    
    .mobile-menu-close:hover {
        background: rgba(255, 255, 255, 0.3);
        transform: scale(1.1);
    }
    
    .mobile-menu-close:active {
        transform: scale(0.95);
    }
    
    @media (max-width: 1024px) {
        .mobile-menu-header {
            display: flex !important;
        }
    }
    
    .nav-menu li {
        margin: 0;
        padding: 0;
        list-style: none;
    }
    
    .nav-link {
        width: 100%;
        padding: 20px 28px;
        font-size: 1.125rem;
        font-weight: 500;
        border-bottom: 1px solid #e8e8e8;
        text-align: left;
        transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        color: #2c3e50;
        display: block;
        position: relative;
        background: white;
    }
    
    .nav-link:first-of-type {
        border-top: none;
        margin-top: 8px;
    }
    
    .nav-link::before {
        content: '';
        position: absolute;
        left: 0;
        top: 0;
        bottom: 0;
        width: 4px;
        background: #d50028;
        transform: scaleY(0);
        transition: transform 0.3s ease;
    }
    
    .nav-link:hover {
        background: linear-gradient(90deg, rgba(213, 0, 40, 0.08) 0%, rgba(213, 0, 40, 0.02) 100%);
        padding-left: 36px;
        color: #d50028;
        transform: translateX(4px);
    }
    
    .nav-link:hover::before {
        transform: scaleY(1);
    }
    
    .nav-link:active {
        background: rgba(213, 0, 40, 0.12);
        transform: translateX(2px);
    }
    
    
    .nav-toggle {
        display: flex !important;
    }
    
    /* Mobile Menu Overlay */
    .nav-menu.active::before {
        content: '';
        position: fixed;
        top: 0;
        left: 0;
        right: 320px;
        bottom: 0;
        background: rgba(0, 0, 0, 0.4);
        z-index: -1;
        animation: fadeIn 0.3s ease;
    }
    
    @keyframes fadeIn {
        from { opacity: 0; }
        to { opacity: 1; }
    }
    
    /* Hero */
    .hero {
        min-height: 70vh;
        padding: 100px 0 60px;
    }
    
    .hero-logo {
        height: 90px;
    }
    
    .hero-icon-wrapper i {
        font-size: 3.75rem;
    }
    
    .hero-title {
        font-size: 2.25rem;
    }
    
    .hero-subtitle {
        font-size: 1.125rem;
    }
    
    .hero-description {
        font-size: 1.1875rem;
    }
    
    .hero-buttons {
        flex-direction: column;
        width: 100%;
        gap: var(--spacing-md);
    }
    
    .hero-buttons .btn {
        width: 100%;
        padding: 1rem 2rem;
    }
    
    .hero-stats {
        gap: var(--spacing-lg);
    }
    
    .hero-stat-number {
        font-size: 2.25rem;
    }
    
    .hero-shape-1 {
        width: 250px;
        height: 250px;
    }
    
    .hero-shape-2 {
        width: 200px;
        height: 200px;
    }
    
    .hero-shape-3 {
        width: 150px;
        height: 150px;
    }
    
    .logo-img {
        height: 40px;
    }
    
    .slider-controls {
        bottom: 2.5rem;
        gap: var(--spacing-md);
    }
    
    .slider-btn {
        width: 40px;
        height: 40px;
        font-size: 1rem;
    }
    
    .slider-dots {
        padding: 6px 12px;
        gap: 6px;
        background: rgba(255, 255, 255, 0.9);
    }
    
    .slider-dot {
        width: 7px;
        height: 7px;
    }
    
    .slider-dot.active {
        width: 24px;
    }
    
    .scroll-indicator {
        bottom: 0.75rem;
    }
    
    .scroll-indicator i {
        font-size: 1.5rem;
    }
    
    .hero-stat {
        padding: var(--spacing-md);
    }
    
    .hero-stat-icon {
        font-size: 1.5rem;
    }
    
    /* About Section Mobile */
    .about-description {
        font-size: 1.0625rem;
    }
    
    .brand-name {
        font-size: 1.25rem;
    }
    
    .feature-card {
        padding: var(--spacing-lg);
    }
    
    .feature-icon {
        width: 70px;
        height: 70px;
    }
    
    .feature-icon i {
        font-size: 2rem;
    }
    
    .feature-card h4 {
        font-size: 1.125rem;
    }
    
    .feature-card p {
        font-size: 0.875rem;
    }
    
    /* About */
    .about-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
    
    .about-card {
        padding: var(--spacing-lg);
    }
    
    /* Services */
    .services-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
    
    .service-card {
        padding: var(--spacing-lg);
    }
    
    /* Why Us */
    .why-us-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
    
    .clients-slide {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
    
    .client-item {
        padding: var(--spacing-md);
    }
    
    .client-image {
      /*  max-height: 400px;*/
        margin: 0 auto;
    }
    
    .clients-slider-nav {
        gap: var(--spacing-md);
        margin-top: var(--spacing-lg);
    }
    
    .clients-slider-btn {
        width: 42px;
        height: 42px;
        font-size: 1rem;
    }
    
    /* Process */
    .process-timeline::before {
        left: 23px;
    }
    
    .process-step {
        gap: var(--spacing-md);
    }
    
    .step-number {
        width: 48px;
        height: 48px;
        font-size: 1.25rem;
        border-width: 3px;
    }
    
    .step-icon {
        width: 40px;
        height: 40px;
        font-size: 1.125rem;
    }
    
    .step-content {
        padding: var(--spacing-md);
    }
    
    .step-content h3 {
        font-size: 1.125rem;
    }
    
    .process-step::before {
        left: 84px;
        top: 23px;
    }
    
    .process-step::after {
        left: 86px;
        top: 25px;
    }
    
    /* Packages */
    .packages-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
        padding-top: 40px;
    }
    
    .package-card.featured {
        transform: scale(1);
    }
    
    .package-card.featured:hover {
        transform: translateY(-10px);
    }
    
    .package-badge {
        top: -24px;
        font-size: 0.8125rem;
        padding: 0.5rem 1.25rem;
    }
    
    /* Contact */
    .contact-wrapper {
        grid-template-columns: 1fr;
        gap: var(--spacing-xl);
    }
    
    .contact-info,
    .contact-form-wrapper {
        padding: var(--spacing-lg);
    }
    
    .contact-item {
        padding: var(--spacing-sm);
    }
    
    /* Footer */
    .footer-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-xl);
    }
    
    .back-to-top {
        bottom: var(--spacing-md);
        right: var(--spacing-md);
        width: 50px;
        height: 50px;
    }
}

/* Small Mobile (max-width: 480px) */
@media (max-width: 480px) {
    :root {
        --section-padding: 3.5rem 0;
        --spacing-xs: 0.375rem;
        --spacing-sm: 0.625rem;
        --spacing-md: 1rem;
        --spacing-lg: 1.5rem;
        --spacing-xl: 2rem;
        --spacing-2xl: 3rem;
        --spacing-3xl: 4rem;
    }
    
    .container {
        padding: 0 var(--spacing-md);
    }
    
    .nav-toggle {
        display: flex !important;
        min-width: 40px;
        min-height: 40px;
    }
    
    .nav-toggle span {
        width: 24px;
        height: 2.5px;
    }
    
    h1 {
        font-size: 2rem;
    }
    
    h2 {
        font-size: 1.75rem;
    }
    
    h3 {
        font-size: 1.25rem;
    }
    
    .hero-title {
        font-size: 1.875rem;
        line-height: 1.2;
    }
    
    .hero-subtitle {
        font-size: 1rem;
    }
    
    .hero-icon-wrapper i {
        font-size: 3rem;
    }
    
    .section-title {
        font-size: 1.875rem;
    }
    
    .section-subtitle {
        font-size: 1rem;
    }
    
    .btn {
        padding: 0.875rem 1.75rem;
        font-size: 0.9375rem;
    }
    
    .service-card,
    .step-content {
        padding: var(--spacing-md);
    }
    
    .service-icon {
        width: 60px;
        height: 60px;
        font-size: 1.75rem;
    }
    
    .feature-icon {
        width: 60px;
        height: 60px;
    }
    
    .feature-icon i {
        font-size: 1.75rem;
    }
    
    .step-number {
        width: 50px;
        height: 50px;
        font-size: 1.25rem;
    }
    
    .process-timeline::before {
        left: 20px;
    }
    
    .process-step {
        gap: var(--spacing-sm);
        margin-bottom: var(--spacing-xl);
    }
    
    .step-number {
        width: 40px;
        height: 40px;
        font-size: 1.125rem;
        border-width: 3px;
    }
    
    .step-icon {
        width: 36px;
        height: 36px;
        font-size: 1rem;
    }
    
    .step-content {
        padding: var(--spacing-sm) var(--spacing-md);
    }
    
    .step-content h3 {
        font-size: 1.0625rem;
    }
    
    .step-content p {
        font-size: 0.875rem;
    }
    
    .process-step::before {
        left: 76px;
        top: 18px;
    }
    
    .process-step::after {
        left: 78px;
        top: 20px;
    }
    
    .contact-icon {
        width: 50px;
        height: 50px;
        font-size: 1.25rem;
    }
    
    .slider-controls {
        bottom: 2rem;
    }
    
    .slider-btn {
        width: 36px;
        height: 36px;
        font-size: 0.9375rem;
    }
    
    .slider-dots {
        padding: 5px 10px;
        gap: 5px;
    }
    
    .slider-dot {
        width: 6px;
        height: 6px;
    }
    
    .slider-dot.active {
        width: 20px;
    }
    
    .scroll-indicator {
        bottom: 0.5rem;
    }
    
    .scroll-indicator i {
        font-size: 1.25rem;
    }
    
    .back-to-top {
        bottom: var(--spacing-md);
        right: var(--spacing-md);
        width: 48px;
        height: 48px;
        font-size: 1.125rem;
    }
    
    .clients-slide {
        grid-template-columns: 1fr;
        gap: var(--spacing-sm);
    }
    
    .client-item {
        padding: var(--spacing-sm);
        display: flex;
        justify-content: center;
    }
    
    .client-image {
        /*max-height: 350px;*/
        width: 100%;
        max-width: 100%;
        margin: 0 auto;
    }
    
    .clients-slider-nav {
        flex-direction: column;
        gap: var(--spacing-md);
    }
    
    .clients-slider-btn {
        width: 40px;
        height: 40px;
        font-size: 0.9375rem;
    }
    
    .hero-shape-1 {
        width: 180px;
        height: 180px;
    }
    
    .hero-shape-2 {
        width: 140px;
        height: 140px;
    }
    
    .hero-shape-3 {
        width: 100px;
        height: 100px;
    }
    
    .package-header,
    .package-features,
    .contact-info,
    .contact-form-wrapper {
        padding: var(--spacing-md);
    }
    
    .package-badge {
        top: -26px;
        font-size: 0.75rem;
        padding: 0.5rem 1rem;
    }
    
    .packages-grid {
        padding-top: 45px;
    }
    
    .cta-fullwidth {
        padding: var(--spacing-2xl) 0;
        margin-top: var(--spacing-2xl);
    }
    
    .cta-bg-animated::before {
        width: 300px;
        height: 300px;
    }
    
    .cta-bg-animated::after {
        width: 250px;
        height: 250px;
    }
    
    .cta-title {
        font-size: 1.625rem;
        margin-bottom: var(--spacing-lg);
    }
    
    .cta-buttons {
        flex-direction: column;
        gap: var(--spacing-md);
    }
    
    .cta-btn {
        width: 100%;
        justify-content: center;
    }
}

/* Print Styles */
@media print {
    .navbar,
    .scroll-indicator,
    .back-to-top,
    .hero-shapes,
    .slider-controls {
        display: none !important;
    }
    
    .hero {
        min-height: auto;
        padding: var(--spacing-lg) 0;
        background: var(--white) !important;
    }
    
    * {
        box-shadow: none !important;
        animation: none !important;
        transition: none !important;
    }
    
    .section-header {
        margin-bottom: var(--spacing-lg);
    }
}