/* CSS Variables and Base Styles */
:root {
    --primary-color: #3b82f6;
    --primary-dark: #1d4ed8;
    --secondary-color: #10b981;
    --accent-color: #f59e0b;
    --text-primary: #1f2937;
    --text-secondary: #6b7280;
    --text-light: #9ca3af;
    --background: #ffffff;
    --surface: #f8fafc;
    --surface-light: #ffffff;
    --border-color: #e5e7eb;
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    --glass-bg: rgba(255, 255, 255, 0.9);
    --glass-border: rgba(229, 231, 235, 0.5);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
    background: var(--background);
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* Navigation Styles */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    transition: all 0.3s ease;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 70px;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-link {
    text-decoration: none;
    color: var(--text-primary);
    font-weight: 500;
    transition: color 0.3s ease;
    position: relative;
}

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

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--primary-color);
    border-radius: 1px;
}

/* Dropdown Menu Styles */
.nav-dropdown {
    position: relative;
}

.nav-dropdown .nav-link {
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.nav-dropdown .nav-link i {
    font-size: 0.75rem;
    transition: transform 0.3s ease;
}

.nav-dropdown:hover .nav-link i {
    transform: rotate(180deg);
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%);
    margin-top: 0.5rem;
    background: white;
    border-radius: 0.5rem;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.15);
    padding: 0.5rem 0;
    min-width: 200px;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    list-style: none;
    z-index: 1001;
}

.nav-dropdown:hover .dropdown-menu {
    opacity: 1;
    visibility: visible;
    margin-top: 1rem;
}

.dropdown-menu::before {
    content: '';
    position: absolute;
    top: -8px;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 0;
    border-left: 8px solid transparent;
    border-right: 8px solid transparent;
    border-bottom: 8px solid white;
}

.dropdown-link {
    display: block;
    padding: 0.75rem 1.5rem;
    color: var(--text-primary);
    text-decoration: none;
    transition: all 0.2s ease;
    font-weight: 500;
}

.dropdown-link:hover {
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.1), rgba(118, 75, 162, 0.1));
    color: var(--primary-color);
    padding-left: 2rem;
}

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
}

.bar {
    width: 25px;
    height: 3px;
    background: var(--text-primary);
    margin: 3px 0;
    transition: 0.3s;
    border-radius: 2px;
}

/* Section Styles */
.section {
    min-height: 100vh;
    padding: 5rem 0;
    display: flex;
    align-items: center;
}

.section.hidden {
    display: none;
}

.section-title {
    font-size: 3rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 1rem;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-subtitle {
    font-size: 1.25rem;
    text-align: center;
    color: var(--text-secondary);
    margin-bottom: 3rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 5rem 0;
}

.hero-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.hero-content {
    text-align: left;
}

.hero-title {
    font-size: 4rem;
    font-weight: 800;
    margin-bottom: 1.5rem;
    line-height: 1.2;
}

.gradient-text {
    background: linear-gradient(135deg, #fbbf24, #f59e0b);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.5rem;
    margin-bottom: 2.5rem;
    opacity: 0.9;
    line-height: 1.6;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    margin-bottom: 3rem;
    flex-wrap: wrap;
}

.hero-stats {
    display: flex;
    gap: 3rem;
    justify-content: flex-start;
}

.hero-stats .stat {
    text-align: left;
}

.hero-stats .stat-number {
    display: block;
    font-size: 2rem;
    font-weight: 700;
    color: white;
    margin-bottom: 0.25rem;
}

.hero-stats .stat-label {
    display: block;
    font-size: 0.9rem;
    opacity: 0.8;
    color: white;
}

.hero-visual {
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
}

.hero-visual .demo-card {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 2rem;
    padding: 3rem;
    position: relative;
    width: 300px;
    height: 300px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.skeleton-demo {
    position: relative;
    width: 120px;
    height: 180px;
}

.skeleton-point {
    position: absolute;
    width: 8px;
    height: 8px;
    background: white;
    border-radius: 50%;
    animation: pulse-skeleton 2s infinite;
    box-shadow: 0 0 8px rgba(255, 255, 255, 0.6);
}

/* Head */
.skeleton-point:nth-child(1) { top: 5px; left: 50%; transform: translateX(-50%); }
/* Neck */
.skeleton-point:nth-child(2) { top: 20px; left: 50%; transform: translateX(-50%); }
/* Left Shoulder */
.skeleton-point:nth-child(3) { top: 30px; left: 20px; }
/* Right Shoulder */
.skeleton-point:nth-child(4) { top: 30px; right: 20px; }
/* Left Elbow */
.skeleton-point:nth-child(5) { top: 55px; left: 10px; }
/* Right Elbow */
.skeleton-point:nth-child(6) { top: 55px; right: 10px; }
/* Left Wrist */
.skeleton-point:nth-child(7) { top: 80px; left: 5px; }
/* Right Wrist */
.skeleton-point:nth-child(8) { top: 80px; right: 5px; }
/* Spine/Torso */
.skeleton-point:nth-child(9) { top: 50px; left: 50%; transform: translateX(-50%); }
/* Left Hip */
.skeleton-point:nth-child(10) { top: 85px; left: 35%; }
/* Right Hip */
.skeleton-point:nth-child(11) { top: 85px; right: 35%; }
/* Left Knee */
.skeleton-point:nth-child(12) { top: 120px; left: 30%; }
/* Right Knee */
.skeleton-point:nth-child(13) { top: 120px; right: 30%; }
/* Left Ankle */
.skeleton-point:nth-child(14) { top: 155px; left: 25%; }
/* Right Ankle */
.skeleton-point:nth-child(15) { top: 155px; right: 25%; }

@keyframes pulse-skeleton {
    0%, 100% { 
        transform: scale(1); 
        opacity: 1;
    }
    50% { 
        transform: scale(1.2); 
        opacity: 0.8;
    }
}

.skeleton-connections {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 120 180'%3E%3Cg stroke='white' stroke-width='1.5' fill='none' opacity='0.7'%3E%3C!-- Head to Neck --%3E%3Cpath d='M60,5 L60,20'/%3E%3C!-- Neck to Shoulders --%3E%3Cpath d='M60,20 L35,30'/%3E%3Cpath d='M60,20 L85,30'/%3E%3C!-- Spine --%3E%3Cpath d='M60,20 L60,50 L60,85'/%3E%3C!-- Arms --%3E%3Cpath d='M35,30 L15,55 L10,80'/%3E%3Cpath d='M85,30 L105,55 L110,80'/%3E%3C!-- Hips --%3E%3Cpath d='M60,85 L42,85'/%3E%3Cpath d='M60,85 L78,85'/%3E%3C!-- Legs --%3E%3Cpath d='M42,85 L36,120 L30,155'/%3E%3Cpath d='M78,85 L84,120 L90,155'/%3E%3C/g%3E%3C/svg%3E") no-repeat center;
    background-size: contain;
    animation: flow-lines 3s infinite;
}

@keyframes flow-lines {
    0%, 100% { opacity: 0.4; }
    50% { opacity: 0.8; }
}

.demo-overlay {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    pointer-events: none;
}

.pulse-ring {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 100px;
    height: 100px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    animation: pulse-ring 3s infinite;
}

.pulse-ring.delay-1 {
    animation-delay: 1s;
    width: 150px;
    height: 150px;
}

.pulse-ring.delay-2 {
    animation-delay: 2s;
    width: 200px;
    height: 200px;
}

@keyframes pulse-ring {
    0% {
        transform: translate(-50%, -50%) scale(0.5);
        opacity: 1;
    }
    100% {
        transform: translate(-50%, -50%) scale(1.5);
        opacity: 0;
    }
}

/* Button Styles */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 1rem 2rem;
    font-size: 1.1rem;
    font-weight: 600;
    text-decoration: none;
    border-radius: 0.75rem;
    transition: all 0.3s ease;
    cursor: pointer;
    border: none;
    position: relative;
    overflow: hidden;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: white;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(59, 130, 246, 0.3);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.1);
    color: white;
    border: 2px solid rgba(255, 255, 255, 0.3);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.2);
    border-color: rgba(255, 255, 255, 0.5);
}

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

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

/* Features Section */
.features {
    padding: 5rem 0;
    background: var(--surface);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.feature-card {
    background: var(--surface);
    padding: 2.5rem 2rem;
    border-radius: 1.5rem;
    box-shadow: var(--shadow);
    text-align: center;
    transition: all 0.3s ease;
    border: 1px solid var(--border-color);
}

.feature-card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-8px);
    border-color: var(--primary-color);
}

.feature-icon {
    width: 4rem;
    height: 4rem;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    border-radius: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    transition: all 0.3s ease;
}

.feature-card:hover .feature-icon {
    transform: scale(1.1);
    box-shadow: 0 10px 25px rgba(59, 130, 246, 0.3);
}

.feature-icon i {
    font-size: 1.5rem;
    color: white;
}

.feature-card h3 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 1rem;
}

.feature-card p {
    color: var(--text-secondary);
    line-height: 1.6;
    margin: 0;
}

.coming-soon-badge {
    display: inline-block;
    background: var(--primary-color);
    color: white;
    font-size: 0.75rem;
    font-weight: 600;
    padding: 0.25rem 0.75rem;
    border-radius: 50px;
    margin-right: 0.5rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* Responsive Design */
@media (max-width: 768px) {
    .hamburger {
        display: flex;
    }
    
    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background: rgba(255, 255, 255, 0.98);
        width: 100%;
        text-align: center;
        transition: 0.3s;
        padding: 2rem 0;
        backdrop-filter: blur(10px);
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    /* Mobile Dropdown Styles */
    .nav-dropdown {
        width: 100%;
    }
    
    .dropdown-menu {
        position: static;
        transform: none;
        box-shadow: none;
        background: rgba(102, 126, 234, 0.05);
        margin-top: 0;
        opacity: 1;
        visibility: visible;
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.3s ease;
    }
    
    .dropdown-menu::before {
        display: none;
    }
    
    .nav-dropdown:hover .dropdown-menu,
    .nav-dropdown.active .dropdown-menu {
        max-height: 300px;
        margin-top: 0.5rem;
    }
    
    .dropdown-link {
        padding: 0.75rem 2rem;
    }
    
    .dropdown-link:hover {
        padding-left: 2.5rem;
    }
    
    .hero-container {
        grid-template-columns: 1fr;
        gap: 2rem;
        text-align: center;
    }
    
    .hero-content {
        text-align: center;
    }
    
    .hero-title {
        font-size: 3rem;
    }
    
    .hero-subtitle {
        font-size: 1.25rem;
    }
    
    .hero-buttons {
        justify-content: center;
    }
    
    .hero-stats {
        justify-content: center;
        gap: 2rem;
    }
    
    .hero-stats .stat {
        text-align: center;
    }
    
    .hero-visual .demo-card {
        width: 250px;
        height: 250px;
        padding: 2rem;
    }
    
    .section-title {
        font-size: 2.5rem;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 1rem;
    }
    
    .nav-container {
        padding: 0 1rem;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-subtitle {
        font-size: 1.1rem;
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
        gap: 0.75rem;
    }
    
    .hero-stats {
        flex-direction: column;
        gap: 1.5rem;
        align-items: center;
    }
    
    .hero-visual .demo-card {
        width: 200px;
        height: 200px;
        padding: 1.5rem;
    }
    
    .skeleton-demo {
        width: 100px;
        height: 140px;
    }
}

/* Dashboard Demo Styles */
.demo-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
    margin: 3rem 0;
}

.demo-card {
    background: linear-gradient(145deg, var(--surface) 0%, var(--surface-light) 100%);
    border-radius: 1.5rem;
    padding: 2rem;
    box-shadow: var(--shadow-lg);
    transition: all 0.3s ease;
    border: 1px solid var(--border-color);
    position: relative;
    overflow: hidden;
}

.demo-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, #3b82f6, #1d4ed8);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.demo-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

.demo-card:hover::before {
    opacity: 1;
}

.demo-header {
    display: flex;
    flex-direction: column;
    align-items: center;
    margin-bottom: 2rem;
    text-align: center;
}

.demo-icon {
    width: 4rem;
    height: 4rem;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    border-radius: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1rem;
    animation: pulse-icon 2s infinite;
}

.demo-icon i {
    font-size: 1.5rem;
    color: white;
}

@keyframes pulse-icon {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.05); }
}

.demo-header h3 {
    margin: 0 0 0.5rem 0;
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
}

.demo-status {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    border-radius: 2rem;
    font-size: 0.85rem;
    font-weight: 500;
}

.demo-status.live {
    background: rgba(16, 185, 129, 0.1);
    color: #047857;
}

.demo-status.processing {
    background: rgba(59, 130, 246, 0.1);
    color: #1d4ed8;
}

.demo-status.ready {
    background: rgba(245, 158, 11, 0.1);
    color: #d97706;
}

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    animation: pulse-dot 1.5s infinite;
}

.demo-status.live .status-dot {
    background: #10b981;
}

.demo-status.processing .status-dot {
    background: #3b82f6;
}

.demo-status.ready .status-dot {
    background: #f59e0b;
}

@keyframes pulse-dot {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.7; transform: scale(1.2); }
}

/* Live Analysis Skeleton */
.demo-preview {
    margin-bottom: 2rem;
    position: relative;
    min-height: 200px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.skeleton-figure {
    position: relative;
    width: 120px;
    height: 160px;
    margin: 0 auto;
}

.joint-point {
    position: absolute;
    width: 8px;
    height: 8px;
    background: var(--primary-color);
    border-radius: 50%;
    animation: pulse-joint 2s infinite;
}

@keyframes pulse-joint {
    0%, 100% { transform: scale(1); box-shadow: 0 0 0 0 rgba(59, 130, 246, 0.7); }
    50% { transform: scale(1.1); box-shadow: 0 0 0 4px rgba(59, 130, 246, 0); }
}

/* Joint positions */
.head { top: 0; left: 50%; transform: translateX(-50%); }
.shoulder-left { top: 20px; left: 30%; }
.shoulder-right { top: 20px; right: 30%; }
.elbow-left { top: 40px; left: 15%; }
.elbow-right { top: 40px; right: 15%; }
.wrist-left { top: 60px; left: 5%; }
.wrist-right { top: 60px; right: 5%; }
.hip-left { top: 80px; left: 35%; }
.hip-right { top: 80px; right: 35%; }
.knee-left { top: 110px; left: 30%; }
.knee-right { top: 110px; right: 30%; }
.ankle-left { top: 140px; left: 25%; }
.ankle-right { top: 140px; right: 25%; }

.skeleton-line {
    position: absolute;
    background: linear-gradient(90deg, var(--primary-color), var(--primary-dark));
    height: 2px;
    animation: flow 3s infinite;
}

@keyframes flow {
    0%, 100% { opacity: 0.6; }
    50% { opacity: 1; }
}

.spine { top: 20px; left: 50%; width: 60px; height: 2px; transform: translateX(-50%) rotate(90deg); }
.arm-left { top: 40px; left: 15%; width: 25px; transform: rotate(45deg); }
.arm-right { top: 40px; right: 15%; width: 25px; transform: rotate(-45deg); }
.leg-left { top: 95px; left: 30%; width: 45px; transform: rotate(90deg); }
.leg-right { top: 95px; right: 30%; width: 45px; transform: rotate(90deg); }

.metrics-overlay {
    position: absolute;
    top: 10px;
    right: 10px;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.metric {
    background: var(--glass-bg);
    padding: 0.5rem;
    border-radius: 0.5rem;
    box-shadow: var(--shadow);
    backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    min-width: 80px;
    text-align: center;
}

.metric-label {
    display: block;
    font-size: 0.7rem;
    color: var(--text-secondary);
    margin-bottom: 0.2rem;
}

.metric-value {
    display: block;
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
}

/* Video Analysis Demo */
.video-mockup {
    background: #1f2937;
    border-radius: 0.75rem;
    height: 120px;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1rem;
    overflow: hidden;
}

.play-button {
    width: 3rem;
    height: 3rem;
    background: rgba(59, 130, 246, 0.9);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.2rem;
    animation: pulse-play 2s infinite;
}

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

.progress-bar {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: rgba(255, 255, 255, 0.3);
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--primary-color), var(--primary-dark));
    width: 0%;
    animation: progress 4s infinite;
}

@keyframes progress {
    0%, 100% { width: 0%; }
    50% { width: 75%; }
}

.analysis-charts {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

.mini-chart {
    background: var(--surface);
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
    padding: 1rem;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.chart-line {
    height: 40px;
    background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 100 40'%3E%3Cpath d='M0,30 Q25,10 50,20 T100,15' stroke='%233b82f6' stroke-width='2' fill='none'/%3E%3C/svg%3E") no-repeat center;
    background-size: contain;
    animation: wave 3s infinite;
}

.chart-bars {
    height: 40px;
    display: flex;
    align-items: end;
    justify-content: center;
    gap: 4px;
}

.chart-bars::before,
.chart-bars::after {
    content: '';
    width: 8px;
    background: linear-gradient(180deg, var(--primary-color), var(--primary-dark));
    border-radius: 2px;
    animation: bars 2s infinite alternate;
}

.chart-bars::before { height: 20px; }
.chart-bars::after { height: 35px; animation-delay: 0.5s; }

@keyframes wave {
    0%, 100% { opacity: 0.7; }
    50% { opacity: 1; }
}

@keyframes bars {
    0% { transform: scaleY(0.5); }
    100% { transform: scaleY(1); }
}

.mini-chart span {
    font-size: 0.75rem;
    color: var(--text-secondary);
    margin-top: 0.5rem;
    display: block;
}

/* Example Videos Demo */
.example-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.example-item {
    background: var(--surface);
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
    padding: 1rem;
    text-align: center;
    transition: all 0.3s ease;
}

.example-item:hover {
    background: var(--surface-light);
    border-color: var(--primary-color);
    transform: scale(1.05);
}

.example-item i {
    font-size: 1.5rem;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
    display: block;
}

.example-item span {
    font-size: 0.8rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.custom-demo-icon {
    width: 24px;
    height: 24px;
    object-fit: contain;
    margin-bottom: 0.5rem;
    display: block;
    filter: brightness(0) saturate(100%) invert(27%) sepia(51%) saturate(2878%) hue-rotate(216deg) brightness(104%) contrast(97%);
    transition: all 0.3s ease;
}

.example-item:hover .custom-demo-icon {
    transform: scale(1.1);
    filter: brightness(0) saturate(100%) invert(35%) sepia(77%) saturate(2476%) hue-rotate(216deg) brightness(99%) contrast(99%);
}

.example-stats {
    display: flex;
    justify-content: space-around;
    margin-top: 1rem;
}

.stat {
    text-align: center;
}

.stat-number {
    display: block;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
}

.stat-label {
    font-size: 0.75rem;
    color: var(--text-secondary);
}

/* Demo Buttons */
.demo-btn {
    width: 100%;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: white;
    border: none;
    padding: 1rem 2rem;
    border-radius: 0.75rem;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.demo-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(59, 130, 246, 0.3);
}

.demo-btn i {
    font-size: 1.1rem;
}

/* Features Highlight */
.features-highlight {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-top: 4rem;
    padding-top: 3rem;
    border-top: 1px solid var(--border-color);
}

.feature-item {
    text-align: center;
    padding: 2rem;
    background: linear-gradient(145deg, var(--surface), var(--surface-light));
    border: 1px solid var(--border-color);
    border-radius: 1rem;
    transition: all 0.3s ease;
}

.feature-item:hover {
    transform: translateY(-4px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
}

.feature-icon {
    width: 3rem;
    height: 3rem;
    background: linear-gradient(135deg, var(--surface-light), var(--border-color));
    border-radius: 0.75rem;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1rem;
    transition: all 0.3s ease;
}

.feature-item:hover .feature-icon {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: white;
}

.feature-icon i {
    font-size: 1.25rem;
    color: var(--text-secondary);
    transition: color 0.3s ease;
}

.feature-item:hover .feature-icon i {
    color: white;
}

.feature-item h4 {
    margin: 0 0 0.5rem 0;
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
}

.feature-item p {
    margin: 0;
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.5;
}

/* Upload Section Styles */
.upload-container {
    max-width: 800px;
    margin: 0 auto;
}

.upload-box {
    background: linear-gradient(145deg, var(--surface) 0%, var(--surface-light) 100%);
    border: 2px dashed var(--border-color);
    border-radius: 1.5rem;
    padding: 3rem 2rem;
    text-align: center;
    transition: all 0.3s ease;
    margin-bottom: 3rem;
}

.upload-box:hover {
    border-color: var(--primary-color);
    background: linear-gradient(145deg, #fafafa 0%, #f0f9ff 100%);
    transform: translateY(-2px);
}

.upload-box i {
    font-size: 4rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
    display: block;
}

.upload-box h3 {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 1rem;
}

.upload-box p {
    color: var(--text-secondary);
    margin-bottom: 2rem;
    font-size: 1.1rem;
}

.upload-features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.feature-highlight {
    background: var(--surface);
    border: 1px solid var(--border-color);
    padding: 2rem;
    border-radius: 1rem;
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
}

.feature-highlight:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-4px);
}

.feature-highlight h4 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
    display: flex;
    align-items: center;
}

.feature-highlight p {
    color: var(--text-secondary);
    margin-bottom: 1rem;
}

.feature-highlight ul {
    color: var(--text-secondary);
    line-height: 1.8;
}

.upload-options {
    margin-top: 3rem;
}

.upload-options h4 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 1.5rem;
    text-align: center;
}

.options-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
}

.option-card {
    position: relative;
    cursor: pointer;
    display: block;
}

.option-card input[type="radio"] {
    position: absolute;
    opacity: 0;
    pointer-events: none;
}

.option-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 1.5rem;
    background: var(--surface);
    border: 2px solid var(--border-color);
    border-radius: 1rem;
    transition: all 0.3s ease;
    text-align: center;
}

.option-content i {
    font-size: 2rem;
    color: var(--text-light);
    margin-bottom: 0.5rem;
    transition: color 0.3s ease;
}

.option-card:hover .option-content {
    border-color: var(--primary-color);
    background: rgba(59, 130, 246, 0.05);
}

.option-card:hover .option-content i {
    color: var(--primary-color);
}

.option-card input:checked + .option-content {
    border-color: var(--primary-color);
    background: linear-gradient(145deg, rgba(59, 130, 246, 0.1), rgba(29, 78, 216, 0.05));
}

.option-card input:checked + .option-content i {
    color: var(--primary-color);
}

/* Research Section Styles */
.research-grid {
    display: grid;
    gap: 2rem;
    margin-bottom: 4rem;
}

.research-card {
    background: var(--surface);
    border: 1px solid var(--border-color);
    padding: 2rem;
    border-radius: 1.5rem;
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
    border-left: 4px solid var(--primary-color);
}

.research-card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-4px);
}

.research-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.journal {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 2rem;
    font-size: 0.85rem;
    font-weight: 500;
}

.year {
    background: var(--surface);
    color: var(--text-secondary);
    padding: 0.5rem 1rem;
    border-radius: 2rem;
    font-size: 0.85rem;
    font-weight: 500;
}

.research-card h3 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 1rem;
    line-height: 1.4;
}

.research-card p {
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 1.5rem;
}

.research-actions {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.research-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    padding: 3rem 0;
    border-top: 1px solid var(--border-color);
}

.stat-card {
    text-align: center;
    padding: 2rem;
    background: linear-gradient(145deg, var(--surface) 0%, var(--surface-light) 100%);
    border: 1px solid var(--border-color);
    border-radius: 1rem;
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
}

.stat-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.stat-card h3 {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.stat-card p {
    color: var(--text-secondary);
    font-weight: 500;
}

/* Team Section Styles */
.team-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-bottom: 4rem;
}

.team-card {
    background: var(--surface);
    border: 1px solid var(--border-color);
    padding: 2rem;
    border-radius: 1.5rem;
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
    text-align: center;
}

.team-card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-8px) scale(1.02);
}

.team-image {
    margin-bottom: 1.5rem;
}

.team-image-professional {
    display: flex;
    justify-content: center;
}

.professional-avatar {
    position: relative;
}

.professional-avatar img {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    object-fit: cover;
    border: 3px solid var(--primary-color);
    box-shadow: 0 4px 8px rgba(59, 130, 246, 0.3);
}

.team-info h3 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.team-role {
    color: var(--primary-color);
    font-weight: 500;
    margin-bottom: 0.5rem;
}

.team-affiliation {
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-style: italic;
    margin-bottom: 1rem;
    padding: 0.25rem 0.75rem;
    background: rgba(37, 99, 235, 0.1);
    border-radius: 15px;
    display: inline-block;
    border: 1px solid rgba(37, 99, 235, 0.2);
}

.team-bio {
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 1.5rem;
}

.team-links {
    display: flex;
    justify-content: center;
    gap: 1rem;
}

.team-links a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: var(--surface-light);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    border-radius: 50%;
    transition: all 0.3s ease;
    text-decoration: none;
}

.team-links a:hover {
    background: var(--primary-color);
    color: white;
    transform: translateY(-2px);
}

.collaborators {
    text-align: center;
    padding-top: 3rem;
    border-top: 1px solid var(--border-color);
}

.collaborators h3 {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 2rem;
}

.logos-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
}

.logo-placeholder {
    background: var(--surface-light);
    padding: 2rem;
    border-radius: 1rem;
    color: var(--text-secondary);
    font-weight: 500;
    border: 2px solid var(--border-color);
    transition: all 0.3s ease;
}

.logo-placeholder:hover {
    border-color: var(--primary-color);
    background: rgba(59, 130, 246, 0.05);
    color: var(--primary-color);
}

/* About Section Styles */
.about-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 4rem;
    margin-bottom: 4rem;
    align-items: start;
}

.about-text h2 {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 1.5rem;
}

.lead {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
    line-height: 1.6;
}

.about-text p {
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 2rem;
}

.about-highlights {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.highlight {
    display: flex;
    gap: 1rem;
    padding: 1.5rem;
    background: var(--surface);
    border: 1px solid var(--border-color);
    border-radius: 1rem;
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
}

.highlight:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-2px);
}

.highlight i {
    font-size: 1.5rem;
    color: var(--accent-color);
    margin-top: 0.25rem;
    flex-shrink: 0;
}

.highlight h4 {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.highlight p {
    color: var(--text-secondary);
    margin: 0;
    line-height: 1.5;
}

.tech-stack {
    background: linear-gradient(145deg, var(--surface) 0%, var(--surface-light) 100%);
    border: 1px solid var(--border-color);
    padding: 2rem;
    border-radius: 1.5rem;
    box-shadow: var(--shadow);
    height: fit-content;
}

.tech-stack h4 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 1.5rem;
    text-align: center;
}

.tech-icons {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
}

.tech-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 1rem;
    background: var(--surface-light);
    border: 1px solid var(--border-color);
    border-radius: 0.75rem;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
    transition: all 0.3s ease;
}

.tech-item:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

.tech-item i {
    font-size: 1.5rem;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.tech-item span {
    font-size: 0.85rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.contact-cta {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: white;
    padding: 4rem 3rem;
    border-radius: 2rem;
    text-align: center;
    margin: 4rem 0;
}

.contact-cta h3 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.contact-cta p {
    font-size: 1.1rem;
    opacity: 0.9;
    margin-bottom: 2rem;
}

.cta-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

/* Responsive Design */
@media (max-width: 1024px) {
    .about-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .tech-icons {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 768px) {
    .demo-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .example-grid {
        grid-template-columns: 1fr;
        gap: 0.75rem;
    }
    
    .features-highlight {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .upload-features {
        grid-template-columns: 1fr;
    }
    
    .options-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .research-stats {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .team-grid {
        grid-template-columns: 1fr;
    }
    
    .tech-icons {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .research-actions {
        flex-direction: column;
    }
    
    .research-meta {
        flex-direction: column;
        align-items: flex-start;
    }
}

@media (max-width: 480px) {
    .options-grid {
        grid-template-columns: 1fr;
    }
    
    .research-stats {
        grid-template-columns: 1fr;
    }
    
    .logos-grid {
        grid-template-columns: 1fr;
    }
    
    .contact-cta {
        padding: 2rem 1.5rem;
    }
    
    .cta-buttons {
        flex-direction: column;
        align-items: center;
    }
}

/* Reviews Section Styles */
.overall-rating {
    max-width: 400px;
    margin: 2rem auto;
    text-align: center;
}

.rating-summary {
    background: var(--card-bg);
    border-radius: 1rem;
    padding: 2rem;
    box-shadow: 0 4px 6px -1px rgb(0 0 0 / 0.1);
    border: 1px solid var(--border-color);
}

.average-score {
    font-size: 3rem;
    font-weight: bold;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.score-max {
    font-size: 1.5rem;
    color: var(--text-secondary);
}

.average-stars {
    font-size: 2rem;
    color: #fbbf24;
    margin-bottom: 1rem;
    letter-spacing: 0.2rem;
}

.review-count {
    color: var(--text-secondary);
    font-size: 1rem;
}

.review-form-container {
    max-width: 600px;
    margin: 2rem auto;
}

.review-form-card {
    background: var(--card-bg);
    border-radius: 1rem;
    padding: 2rem;
    box-shadow: 0 4px 6px -1px rgb(0 0 0 / 0.1);
    border: 1px solid var(--border-color);
}

.review-form-card h3 {
    color: var(--text-primary);
    margin-bottom: 1.5rem;
    text-align: center;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    color: var(--text-primary);
    font-weight: 500;
    margin-bottom: 0.5rem;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
    font-size: 1rem;
    transition: border-color 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

        .star-rating {
            display: flex;
            gap: 0.25rem;
            margin: 0.5rem 0;
            justify-content: center;
        }

        .star {
            font-size: 2rem;
            color: #e5e7eb;
            cursor: pointer;
            transition: all 0.2s ease;
            text-shadow: 1px 1px 2px rgba(0,0,0,0.1);
        }

        .star:hover,
        .star.active {
            color: #fbbf24;
            transform: scale(1.1);
        }

        .star:hover {
            text-shadow: 2px 2px 4px rgba(251, 191, 36, 0.3);
        }.reviews-display {
    margin-top: 3rem;
}

.reviews-display h3 {
    color: var(--text-primary);
    margin-bottom: 2rem;
    text-align: center;
}

.reviews-list {
    max-width: 800px;
    margin: 0 auto;
}

.review-item {
    background: var(--card-bg);
    border-radius: 1rem;
    padding: 1.5rem;
    margin-bottom: 1.5rem;
    box-shadow: 0 2px 4px -1px rgb(0 0 0 / 0.1);
    border: 1px solid var(--border-color);
}

.review-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}

.reviewer-info h4 {
    color: var(--text-primary);
    margin: 0;
    font-size: 1.1rem;
}

.reviewer-info p {
    color: var(--text-secondary);
    margin: 0.25rem 0 0 0;
    font-size: 0.9rem;
}

.review-rating {
    display: flex;
    gap: 0.125rem;
}

.review-rating .star {
    font-size: 1rem;
    color: #fbbf24;
}

.review-text {
    color: var(--text-secondary);
    line-height: 1.6;
    margin: 0;
}

.review-date {
    color: #9ca3af;
    font-size: 0.8rem;
    margin-top: 1rem;
    text-align: right;
}

.no-reviews {
    text-align: center;
    color: var(--text-secondary);
    padding: 3rem 1rem;
}

.no-reviews i {
    font-size: 3rem;
    color: var(--border-color);
    margin-bottom: 1rem;
}

/* Footer Styles */
.footer {
    background: linear-gradient(135deg, var(--text-primary), #374151);
    color: white;
    padding: 4rem 0 2rem;
    margin-top: 5rem;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-section h4 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    color: white;
}

.footer-section ul {
    list-style: none;
    padding: 0;
}

.footer-section li {
    margin-bottom: 0.75rem;
}

.footer-section a {
    color: #d1d5db;
    text-decoration: none;
    transition: color 0.3s ease;
    font-size: 0.95rem;
}

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

.footer-logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.footer-logo i {
    color: var(--primary-color);
    font-size: 1.75rem;
}

.footer-section p {
    color: #d1d5db;
    line-height: 1.6;
    margin-bottom: 2rem;
    font-size: 0.95rem;
}

.social-links {
    display: flex;
    gap: 1rem;
}

.social-links a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    color: #d1d5db;
    font-size: 1.1rem;
    transition: all 0.3s ease;
}

.social-links a:hover {
    background: var(--primary-color);
    color: white;
    transform: translateY(-2px);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 2rem;
    text-align: center;
}

.footer-bottom p {
    color: #9ca3af;
    margin: 0.5rem 0;
    font-size: 0.9rem;
}

.footer-bottom p:first-child {
    font-weight: 500;
}

/* Footer Responsive Design */
@media (max-width: 1024px) {
    .footer-content {
        grid-template-columns: 1fr 1fr;
        gap: 2rem;
    }
}

@media (max-width: 768px) {
    .footer {
        padding: 3rem 0 1.5rem;
        margin-top: 3rem;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 2rem;
        text-align: center;
    }
    
    .footer-section:first-child {
        text-align: center;
    }
    
    .social-links {
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .footer {
        padding: 2rem 0 1rem;
    }
    
    .footer-content {
        gap: 1.5rem;
    }
    
    .social-links a {
        width: 35px;
        height: 35px;
        font-size: 1rem;
    }
}

/* Contact Section Styles */
.contact-container {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 3rem;
    max-width: 1200px;
    margin: 0 auto;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.info-card {
    background: white;
    padding: 2rem;
    border-radius: 1rem;
    box-shadow: 0 4px 6px -1px rgb(0 0 0 / 0.1);
    text-align: center;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.info-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px -5px rgb(0 0 0 / 0.15);
}

.info-card i {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.info-card h3 {
    font-size: 1.25rem;
    margin-bottom: 0.75rem;
    color: var(--text-primary);
}

.info-card p {
    color: var(--text-secondary);
    line-height: 1.6;
    margin: 0;
}

.info-card a {
    color: var(--primary-color);
    text-decoration: none;
    transition: color 0.3s ease;
}

.info-card a:hover {
    color: var(--primary-dark);
}

.contact-form-container {
    background: white;
    padding: 3rem;
    border-radius: 1rem;
    box-shadow: 0 4px 6px -1px rgb(0 0 0 / 0.1);
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.form-group label {
    font-weight: 600;
    color: var(--text-primary);
    font-size: 0.95rem;
}

.form-group input,
.form-group textarea {
    padding: 0.875rem 1rem;
    border: 2px solid #e5e7eb;
    border-radius: 0.5rem;
    font-size: 1rem;
    font-family: inherit;
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
    background: white;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

#contactFormMessage {
    padding: 1rem;
    border-radius: 0.5rem;
    font-weight: 500;
    text-align: center;
}

#contactFormMessage.success {
    background: #dcfce7;
    color: #166534;
    border: 1px solid #86efac;
}

#contactFormMessage.error {
    background: #fee2e2;
    color: #991b1b;
    border: 1px solid #fca5a5;
}

@media (max-width: 768px) {
    .contact-container {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .form-row {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .contact-form-container {
        padding: 2rem;
    }
}