/* ===================================
   DũngTQ Landing Page - Styles
   Premium Dark Mode with Glassmorphism
   =================================== */

/* CSS Variables */
:root {
    /* Colors */
    --primary: #DC2626;
    --primary-dark: #B91C1C;
    --primary-light: #EF4444;
    --secondary: #1F2937;
    --accent: #F59E0B;
    --accent-light: #FBBF24;

    /* Background */
    --bg-dark: #0F172A;
    --bg-darker: #020617;
    --bg-card: rgba(30, 41, 59, 0.7);
    --bg-glass: rgba(255, 255, 255, 0.05);

    /* Text */
    --text-primary: #F8FAFC;
    --text-secondary: #94A3B8;
    --text-muted: #64748B;

    /* Gradients */
    --gradient-primary: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
    --gradient-dark: linear-gradient(180deg, var(--bg-dark) 0%, var(--bg-darker) 100%);
    --gradient-glass: linear-gradient(135deg, rgba(255, 255, 255, 0.1) 0%, rgba(255, 255, 255, 0.05) 100%);

    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 30px rgba(220, 38, 38, 0.3);

    /* Border */
    --border-glass: 1px solid rgba(255, 255, 255, 0.1);

    /* Spacing */
    --section-padding: 100px 0;
    --container-width: 1200px;

    /* Animation */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Be Vietnam Pro', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--gradient-dark);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

/* Container */
.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 24px;
}

/* Typography */
h1,
h2,
h3,
h4,
h5,
h6 {
    font-weight: 700;
    line-height: 1.2;
}

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

/* ===================================
   Navigation
   =================================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 16px 0;
    transition: var(--transition-normal);
}

.navbar.scrolled {
    background: rgba(15, 23, 42, 0.95);
    backdrop-filter: blur(20px);
    border-bottom: var(--border-glass);
    padding: 12px 0;
}

.nav-container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 8px;
}

.logo-text {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--text-primary);
}

.logo-accent {
    color: var(--primary);
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 8px;
    list-style: none;
}

.nav-link {
    padding: 10px 20px;
    border-radius: 8px;
    font-weight: 500;
    color: var(--text-secondary);
    transition: var(--transition-fast);
}

.nav-link:hover {
    color: var(--text-primary);
    background: var(--bg-glass);
}

.nav-link.nav-cta {
    background: var(--gradient-primary);
    color: white;
}

.nav-link.nav-cta:hover {
    box-shadow: var(--shadow-glow);
    transform: translateY(-2px);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: 8px;
    background: transparent;
    border: none;
    cursor: pointer;
}

.nav-toggle span {
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    border-radius: 2px;
    transition: var(--transition-fast);
}

/* ===================================
   Hero Section
   =================================== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    padding: 120px 0 80px;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
    z-index: -1;
}

.hero-gradient {
    position: absolute;
    inset: 0;
    background:
        radial-gradient(circle at 20% 50%, rgba(220, 38, 38, 0.15) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(245, 158, 11, 0.1) 0%, transparent 40%),
        var(--gradient-dark);
}

.hero-particles {
    position: absolute;
    inset: 0;
    opacity: 0.5;
}

.hero-container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 24px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.hero-content {
    animation: fadeInUp 0.8s ease forwards;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background: var(--bg-glass);
    border: var(--border-glass);
    border-radius: 50px;
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-bottom: 24px;
}

.badge-icon {
    font-size: 1rem;
}

.hero-title {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-bottom: 24px;
}

.title-greeting {
    font-size: 1.25rem;
    font-weight: 400;
    color: var(--text-secondary);
}

.title-name {
    font-size: 3.5rem;
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.title-tagline {
    font-size: 1.5rem;
    font-weight: 500;
    color: var(--text-primary);
}

.title-tagline .highlight {
    color: var(--primary);
    margin: 0 8px;
}

.hero-description {
    font-size: 1.125rem;
    color: var(--text-secondary);
    margin-bottom: 32px;
    max-width: 500px;
}

.hero-cta {
    display: flex;
    gap: 16px;
    margin-bottom: 48px;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 28px;
    border-radius: 12px;
    font-weight: 600;
    font-size: 1rem;
    border: none;
    cursor: pointer;
    transition: var(--transition-normal);
}

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

.btn-primary:hover {
    box-shadow: var(--shadow-glow);
    transform: translateY(-3px);
}

.btn-secondary {
    background: var(--bg-glass);
    border: var(--border-glass);
    color: var(--text-primary);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
    transform: translateY(-3px);
}

/* Hero Stats */
.hero-stats {
    display: flex;
    align-items: center;
    gap: 32px;
}

.stat-item {
    text-align: center;
}

.stat-number {
    display: block;
    font-size: 2rem;
    font-weight: 800;
    color: var(--primary);
}

.stat-label {
    font-size: 0.875rem;
    color: var(--text-muted);
}

.stat-divider {
    width: 1px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
}

/* Hero Image */
.hero-image {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
    animation: fadeInRight 0.8s ease 0.3s forwards;
    opacity: 0;
}

.image-frame {
    position: relative;
    width: 350px;
    height: 400px;
    border-radius: 24px;
    overflow: hidden;
    background: var(--bg-glass);
    border: var(--border-glass);
}

.image-glow {
    position: absolute;
    inset: -50%;
    background: radial-gradient(circle, rgba(220, 38, 38, 0.3) 0%, transparent 70%);
    animation: pulse 4s ease-in-out infinite;
}

.image-placeholder {
    position: relative;
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--bg-card) 0%, var(--bg-dark) 100%);
}

.placeholder-icon {
    font-size: 6rem;
    margin-bottom: 16px;
}

.image-placeholder span {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-secondary);
}

/* Profile Image */
.profile-img {
    position: relative;
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center top;
    z-index: 1;
}

.floating-badge {
    position: absolute;
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px 20px;
    background: var(--bg-card);
    backdrop-filter: blur(10px);
    border: var(--border-glass);
    border-radius: 12px;
    font-weight: 600;
    font-size: 0.875rem;
    box-shadow: var(--shadow-md);
    animation: float 3s ease-in-out infinite;
}

.badge-xnk {
    top: 20%;
    right: -20px;
    animation-delay: 0s;
}

.badge-ai {
    bottom: 20%;
    left: -20px;
    animation-delay: 1.5s;
}

/* Hero Scroll Indicator */
.hero-scroll {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    color: var(--text-muted);
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 2px;
}

.scroll-indicator {
    width: 24px;
    height: 40px;
    border: 2px solid rgba(255, 255, 255, 0.2);
    border-radius: 12px;
    position: relative;
}

.scroll-indicator::before {
    content: '';
    position: absolute;
    top: 8px;
    left: 50%;
    transform: translateX(-50%);
    width: 4px;
    height: 8px;
    background: var(--primary);
    border-radius: 2px;
    animation: scrollBounce 2s ease-in-out infinite;
}

/* ===================================
   Section Styling
   =================================== */
section {
    padding: var(--section-padding);
    position: relative;
}

.section-header {
    text-align: center;
    max-width: 600px;
    margin: 0 auto 60px;
}

.section-header.light {
    color: var(--text-primary);
}

.section-tag {
    display: inline-block;
    padding: 6px 16px;
    background: var(--bg-glass);
    border: var(--border-glass);
    border-radius: 50px;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--primary);
    margin-bottom: 16px;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 16px;
    color: var(--text-primary);
}

.section-subtitle {
    font-size: 1.125rem;
    color: var(--text-secondary);
}

/* ===================================
   About Section
   =================================== */
.about {
    background: var(--bg-dark);
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: start;
}

.about-story {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.story-card {
    padding: 24px;
    background: var(--bg-glass);
    border: var(--border-glass);
    border-radius: 16px;
    transition: var(--transition-normal);
}

.story-card:hover {
    transform: translateY(-5px);
    border-color: rgba(220, 38, 38, 0.3);
    box-shadow: var(--shadow-md);
}

.story-icon {
    font-size: 2rem;
    margin-bottom: 12px;
}

.story-card h3 {
    font-size: 1.125rem;
    margin-bottom: 8px;
    color: var(--text-primary);
}

.story-card p {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.about-values {
    padding: 32px;
    background: var(--bg-glass);
    border: var(--border-glass);
    border-radius: 20px;
}

.values-title {
    font-size: 1.5rem;
    margin-bottom: 24px;
    color: var(--text-primary);
}

.values-list {
    display: flex;
    flex-direction: column;
    gap: 20px;
    margin-bottom: 32px;
}

.value-item {
    display: flex;
    gap: 16px;
    align-items: flex-start;
}

.value-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    background: var(--bg-glass);
    border-radius: 12px;
    flex-shrink: 0;
}

.value-text h4 {
    font-size: 1rem;
    margin-bottom: 4px;
    color: var(--text-primary);
}

.value-text p {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.about-quote {
    padding: 24px;
    background: linear-gradient(135deg, rgba(220, 38, 38, 0.1) 0%, transparent 100%);
    border-left: 4px solid var(--primary);
    border-radius: 0 12px 12px 0;
    font-size: 1.125rem;
    font-style: italic;
    color: var(--text-primary);
}

.about-quote cite {
    display: block;
    margin-top: 12px;
    font-size: 0.875rem;
    font-style: normal;
    color: var(--primary);
}

/* ===================================
   Services Section
   =================================== */
.services {
    background: var(--bg-darker);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.service-card {
    position: relative;
    padding: 32px;
    background: var(--bg-glass);
    border: var(--border-glass);
    border-radius: 20px;
    transition: var(--transition-normal);
}

.service-card:hover {
    transform: translateY(-8px);
    border-color: rgba(220, 38, 38, 0.3);
    box-shadow: var(--shadow-lg);
}

.service-card.featured {
    background: linear-gradient(135deg, rgba(220, 38, 38, 0.1) 0%, var(--bg-glass) 100%);
    border-color: rgba(220, 38, 38, 0.3);
}

.service-badge {
    position: absolute;
    top: -12px;
    right: 24px;
    padding: 6px 16px;
    background: var(--gradient-primary);
    border-radius: 50px;
    font-size: 0.75rem;
    font-weight: 600;
    color: white;
}

.service-icon {
    width: 64px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    background: var(--bg-glass);
    border-radius: 16px;
    margin-bottom: 20px;
}

.service-title {
    font-size: 1.25rem;
    margin-bottom: 12px;
    color: var(--text-primary);
}

.service-desc {
    font-size: 0.9375rem;
    color: var(--text-secondary);
    margin-bottom: 20px;
}

.service-features {
    list-style: none;
    margin-bottom: 24px;
}

.service-features li {
    padding: 8px 0;
    font-size: 0.875rem;
    color: var(--text-secondary);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.service-features li:last-child {
    border-bottom: none;
}

.service-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--primary);
    font-weight: 600;
    font-size: 0.875rem;
}

.service-link:hover {
    gap: 12px;
}

/* ===================================
   AI Hub Section
   =================================== */
.ai-hub {
    background: var(--bg-dark);
    overflow: hidden;
}

.ai-hub-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}

.ai-hub-text .section-tag {
    margin-bottom: 16px;
}

.ai-hub-text .section-title {
    text-align: left;
    margin-bottom: 24px;
}

.gradient-text {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.ai-hub-desc {
    font-size: 1.125rem;
    color: var(--text-secondary);
    margin-bottom: 32px;
}

.ai-topics {
    display: flex;
    flex-direction: column;
    gap: 20px;
    margin-bottom: 32px;
}

.topic-item {
    display: flex;
    gap: 16px;
    align-items: flex-start;
}

.topic-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    background: var(--bg-glass);
    border: var(--border-glass);
    border-radius: 12px;
    flex-shrink: 0;
}

.topic-text h4 {
    font-size: 1rem;
    margin-bottom: 4px;
    color: var(--text-primary);
}

.topic-text p {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

/* AI Hub Visual */
.ai-hub-visual {
    position: relative;
    display: flex;
    justify-content: center;
}

.ai-card {
    width: 100%;
    max-width: 400px;
    padding: 24px;
    background: var(--bg-glass);
    border: var(--border-glass);
    border-radius: 20px;
    backdrop-filter: blur(10px);
}

.ai-card-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 20px;
    padding-bottom: 16px;
    border-bottom: var(--border-glass);
}

.ai-card-icon {
    font-size: 1.5rem;
}

.ai-card-title {
    font-weight: 600;
    color: var(--text-primary);
}

.ai-card-body {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.chat-bubble {
    padding: 12px 16px;
    border-radius: 16px;
    font-size: 0.875rem;
    max-width: 85%;
}

.chat-bubble.user {
    background: var(--bg-glass);
    color: var(--text-secondary);
    align-self: flex-end;
    border-bottom-right-radius: 4px;
}

.chat-bubble.ai {
    background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
    color: white;
    align-self: flex-start;
    border-bottom-left-radius: 4px;
}

.floating-icons {
    position: absolute;
    inset: 0;
    pointer-events: none;
}

.float-icon {
    position: absolute;
    font-size: 2rem;
    animation: floatRandom 5s ease-in-out infinite;
    animation-delay: var(--delay);
}

.float-icon:nth-child(1) {
    top: 10%;
    left: 10%;
}

.float-icon:nth-child(2) {
    top: 20%;
    right: 5%;
}

.float-icon:nth-child(3) {
    bottom: 20%;
    left: 5%;
}

.float-icon:nth-child(4) {
    bottom: 10%;
    right: 15%;
}

/* ===================================
   Community Section
   =================================== */
.community {
    background: linear-gradient(180deg, var(--bg-darker) 0%, var(--primary-dark) 100%);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    margin-bottom: 60px;
}

.stat-card {
    padding: 32px;
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(10px);
    border: var(--border-glass);
    border-radius: 20px;
    text-align: center;
    transition: var(--transition-normal);
}

.stat-card:hover {
    transform: translateY(-5px);
    background: rgba(255, 255, 255, 0.1);
}

.stat-card .stat-icon {
    font-size: 2.5rem;
    margin-bottom: 16px;
}

.stat-card .stat-value {
    font-size: 2.5rem;
    font-weight: 800;
    color: white;
    margin-bottom: 8px;
}

.stat-card .stat-name {
    font-size: 1rem;
    font-weight: 600;
    color: white;
    margin-bottom: 4px;
}

.stat-card .stat-desc {
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.7);
}

.community-channels {
    text-align: center;
}

.community-channels h3 {
    font-size: 1.5rem;
    margin-bottom: 24px;
    color: white;
}

.channels-grid {
    display: flex;
    justify-content: center;
    gap: 16px;
    flex-wrap: wrap;
}

.channel-card {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px 24px;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 12px;
    color: white;
    font-weight: 500;
    transition: var(--transition-normal);
}

.channel-card:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: translateY(-3px);
}

.channel-icon {
    font-size: 1.5rem;
}

/* ===================================
   Featured Section
   =================================== */
.featured {
    background: var(--bg-dark);
}

.featured-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.featured-card {
    background: var(--bg-glass);
    border: var(--border-glass);
    border-radius: 20px;
    overflow: hidden;
    transition: var(--transition-normal);
}

.featured-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
}

.card-image {
    position: relative;
    height: 180px;
    background: var(--bg-card);
}

.card-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 4rem;
    background: linear-gradient(135deg, var(--bg-card) 0%, var(--bg-dark) 100%);
}

.card-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* Skills Grid */
.skills-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.skill-card {
    background: var(--bg-glass);
    border: var(--border-glass);
    border-radius: 20px;
    overflow: hidden;
    transition: var(--transition-normal);
}

.skill-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    border-color: rgba(220, 38, 38, 0.3);
}

.skill-image {
    height: 180px;
    overflow: hidden;
}

.skill-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition-slow);
}

.skill-card:hover .skill-image img {
    transform: scale(1.05);
}

.skill-content {
    padding: 24px;
    text-align: center;
}

.skill-icon {
    font-size: 2rem;
    margin-bottom: 12px;
}

.skill-content h3 {
    font-size: 1.125rem;
    color: var(--text-primary);
    margin-bottom: 12px;
}

.skill-content p {
    font-size: 0.875rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* Skills Grid - 5 items layout */
.skills-grid .skill-card:nth-child(4),
.skills-grid .skill-card:nth-child(5) {
    grid-column: span 1;
}

@media (max-width: 1024px) {
    .skills-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .skills-grid .skill-card:nth-child(5) {
        grid-column: span 2;
    }
}

@media (max-width: 768px) {
    .skills-grid {
        grid-template-columns: 1fr;
    }

    .skills-grid .skill-card:nth-child(5) {
        grid-column: span 1;
    }
}

.card-category {
    position: absolute;
    top: 16px;
    left: 16px;
    padding: 6px 12px;
    background: var(--primary);
    border-radius: 6px;
    font-size: 0.75rem;
    font-weight: 600;
    color: white;
}

.card-content {
    padding: 24px;
}

.card-content h3 {
    font-size: 1.125rem;
    margin-bottom: 12px;
    color: var(--text-primary);
    line-height: 1.4;
}

.card-content p {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-bottom: 16px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.card-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.meta-date {
    font-size: 0.75rem;
    color: var(--text-muted);
}

.meta-link {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--primary);
}

.meta-link:hover {
    color: var(--primary-light);
}

/* ===================================
   Testimonials Section
   =================================== */
.testimonials {
    background: linear-gradient(180deg, var(--bg-dark) 0%, var(--secondary) 100%);
}

.testimonials-slider {
    display: flex;
    gap: 24px;
    overflow: hidden;
    margin-bottom: 32px;
}

.testimonial-card {
    flex: 0 0 calc(33.333% - 16px);
    padding: 32px;
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(10px);
    border: var(--border-glass);
    border-radius: 20px;
    transition: var(--transition-normal);
}

.testimonial-card:hover {
    background: rgba(255, 255, 255, 0.08);
}

.testimonial-content {
    margin-bottom: 24px;
}

.quote-icon {
    font-size: 3rem;
    font-family: Georgia, serif;
    color: var(--primary);
    line-height: 1;
    margin-bottom: 12px;
}

.testimonial-content p {
    font-size: 1rem;
    line-height: 1.7;
    color: var(--text-secondary);
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: 16px;
}

.author-avatar {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    background: var(--bg-glass);
    border-radius: 50%;
}

.author-info h4 {
    font-size: 1rem;
    color: var(--text-primary);
    margin-bottom: 2px;
}

.author-info span {
    font-size: 0.875rem;
    color: var(--text-muted);
}

.slider-nav {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 16px;
}

.slider-btn {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-glass);
    border: var(--border-glass);
    border-radius: 50%;
    color: var(--text-primary);
    cursor: pointer;
    transition: var(--transition-fast);
}

.slider-btn:hover {
    background: var(--primary);
    border-color: var(--primary);
}

.slider-dots {
    display: flex;
    gap: 8px;
}

.slider-dots .dot {
    width: 8px;
    height: 8px;
    background: rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    cursor: pointer;
    transition: var(--transition-fast);
}

.slider-dots .dot.active {
    width: 24px;
    background: var(--primary);
    border-radius: 4px;
}

/* ===================================
   Contact Section
   =================================== */
.contact {
    background: var(--bg-darker);
}

.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: start;
}

.contact-info .section-tag {
    margin-bottom: 16px;
}

.contact-info .section-title {
    text-align: left;
    margin-bottom: 16px;
}

.contact-desc {
    font-size: 1.125rem;
    color: var(--text-secondary);
    margin-bottom: 32px;
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.contact-item {
    display: flex;
    gap: 16px;
    align-items: center;
}

.contact-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    background: var(--bg-glass);
    border: var(--border-glass);
    border-radius: 12px;
    flex-shrink: 0;
}

.contact-label {
    display: block;
    font-size: 0.75rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 4px;
}

.contact-text a,
.contact-text span {
    font-size: 1rem;
    color: var(--text-primary);
}

.contact-text a:hover {
    color: var(--primary);
}

/* Contact Form */
.contact-form-wrapper {
    padding: 40px;
    background: var(--bg-glass);
    border: var(--border-glass);
    border-radius: 24px;
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.form-group label {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-secondary);
}

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

.form-group input,
.form-group select,
.form-group textarea {
    padding: 14px 16px;
    background: var(--bg-dark);
    border: var(--border-glass);
    border-radius: 12px;
    font-family: inherit;
    font-size: 1rem;
    color: var(--text-primary);
    transition: var(--transition-fast);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(220, 38, 38, 0.1);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--text-muted);
}

.form-group select {
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 24 24' fill='none' stroke='%2394A3B8' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    padding-right: 40px;
}

.form-group textarea {
    resize: vertical;
    min-height: 100px;
}

.btn-submit {
    margin-top: 8px;
    justify-content: center;
}

/* ===================================
   Footer
   =================================== */
.footer {
    background: var(--bg-darker);
    padding: 60px 0 30px;
    border-top: var(--border-glass);
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 40px;
}

.footer-brand .logo-text {
    font-size: 1.75rem;
    margin-bottom: 12px;
    display: inline-block;
}

.footer-brand p {
    font-size: 0.9375rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

.footer-links h4,
.footer-contact h4,
.footer-social h4 {
    font-size: 1rem;
    margin-bottom: 20px;
    color: var(--text-primary);
}

.footer-links ul,
.footer-contact ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer-links a,
.footer-contact li {
    font-size: 0.9375rem;
    color: var(--text-secondary);
}

.footer-links a:hover {
    color: var(--primary);
}

.social-links {
    display: flex;
    gap: 12px;
}

.social-links a {
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-glass);
    border: var(--border-glass);
    border-radius: 12px;
    color: var(--text-secondary);
    transition: var(--transition-fast);
}

.social-links a:hover {
    background: var(--primary);
    border-color: var(--primary);
    color: white;
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 30px;
    border-top: var(--border-glass);
}

.footer-bottom p {
    font-size: 0.875rem;
    color: var(--text-muted);
}

.credit {
    color: var(--primary) !important;
}

/* ===================================
   Toast Notification
   =================================== */
.toast {
    position: fixed;
    bottom: -100px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px 24px;
    background: linear-gradient(135deg, #10B981 0%, #059669 100%);
    border-radius: 12px;
    box-shadow: var(--shadow-lg);
    color: white;
    font-weight: 500;
    z-index: 9999;
    transition: bottom 0.5s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

.toast.show {
    bottom: 40px;
}

.toast-icon {
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    font-size: 0.875rem;
}

/* ===================================
   Animations
   =================================== */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInRight {
    from {
        opacity: 0;
        transform: translateX(30px);
    }

    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes float {

    0%,
    100% {
        transform: translateY(0);
    }

    50% {
        transform: translateY(-15px);
    }
}

@keyframes floatRandom {

    0%,
    100% {
        transform: translate(0, 0) rotate(0deg);
    }

    25% {
        transform: translate(10px, -10px) rotate(5deg);
    }

    50% {
        transform: translate(-5px, -20px) rotate(-5deg);
    }

    75% {
        transform: translate(-15px, -5px) rotate(3deg);
    }
}

@keyframes pulse {

    0%,
    100% {
        opacity: 0.3;
    }

    50% {
        opacity: 0.6;
    }
}

@keyframes scrollBounce {

    0%,
    100% {
        transform: translateX(-50%) translateY(0);
        opacity: 1;
    }

    50% {
        transform: translateX(-50%) translateY(12px);
        opacity: 0.5;
    }
}

/* Scroll reveal animation */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s ease;
}

.reveal.active {
    opacity: 1;
    transform: translateY(0);
}

/* ===================================
   Responsive Design
   =================================== */
@media (max-width: 1024px) {
    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-content {
        order: 1;
    }

    .hero-image {
        order: 0;
        margin-bottom: 40px;
    }

    .hero-description {
        margin-left: auto;
        margin-right: auto;
    }

    .hero-cta {
        justify-content: center;
    }

    .hero-stats {
        justify-content: center;
    }

    .about-content {
        grid-template-columns: 1fr;
    }

    .services-grid {
        grid-template-columns: 1fr 1fr;
    }

    .ai-hub-content {
        grid-template-columns: 1fr;
    }

    .ai-hub-text .section-title {
        text-align: center;
    }

    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .featured-grid {
        grid-template-columns: 1fr 1fr;
    }

    .testimonial-card {
        flex: 0 0 calc(50% - 12px);
    }

    .contact-wrapper {
        grid-template-columns: 1fr;
    }

    .contact-info .section-title {
        text-align: center;
    }

    .contact-info {
        text-align: center;
    }

    .contact-details {
        align-items: center;
    }

    .footer-content {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 768px) {
    :root {
        --section-padding: 60px 0;
    }

    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 80%;
        max-width: 320px;
        height: 100vh;
        background: rgba(15, 23, 42, 0.98);
        backdrop-filter: blur(20px);
        flex-direction: column;
        padding: 100px 40px 40px;
        transition: var(--transition-normal);
        border-left: var(--border-glass);
    }

    .nav-menu.active {
        right: 0;
    }

    .nav-toggle {
        display: flex;
        z-index: 1001;
    }

    .nav-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }

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

    .nav-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(5px, -5px);
    }

    .title-name {
        font-size: 2.5rem;
    }

    .title-tagline {
        font-size: 1.25rem;
    }

    .section-title {
        font-size: 2rem;
    }

    .about-story {
        grid-template-columns: 1fr;
    }

    .services-grid {
        grid-template-columns: 1fr;
    }

    .stats-grid {
        grid-template-columns: 1fr 1fr;
        gap: 16px;
    }

    .stat-card {
        padding: 20px;
    }

    .stat-card .stat-value {
        font-size: 2rem;
    }

    .featured-grid {
        grid-template-columns: 1fr;
    }

    .testimonial-card {
        flex: 0 0 100%;
    }

    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .footer-brand {
        margin-bottom: 20px;
    }

    .social-links {
        justify-content: center;
    }

    .footer-bottom {
        flex-direction: column;
        gap: 12px;
        text-align: center;
    }

    .floating-badge {
        display: none;
    }

    .hero-scroll {
        display: none;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 16px;
    }

    .title-name {
        font-size: 2rem;
    }

    .hero-stats {
        flex-wrap: wrap;
        gap: 20px;
    }

    .stat-divider {
        display: none;
    }

    .hero-cta {
        flex-direction: column;
    }

    .btn {
        width: 100%;
        justify-content: center;
    }

    .image-frame {
        width: 280px;
        height: 320px;
    }

    .channels-grid {
        flex-direction: column;
        align-items: center;
    }

    .channel-card {
        width: 100%;
        max-width: 280px;
        justify-content: center;
    }

    .contact-form-wrapper {
        padding: 24px;
    }
}