:root {
    /* Dark Theme Color Palette */
    --primary-color: #6366f1;
    --primary-dark: #4f46e5;
    --secondary-color: #8b5cf6;
    --accent-color: #06b6d4;
    --accent-light: #67e8f9;
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --danger-color: #ef4444;
    
    /* Background Colors */
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --bg-tertiary: #334155;
    --bg-card: #1e293b;
    --bg-glass: rgba(30, 41, 59, 0.8);
    
    /* Text Colors */
    --text-primary: #f8fafc;
    --text-secondary: #cbd5e1;
    --text-muted: #94a3b8;
    
    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #ff6b6b 0%, #4ecdc4 50%, #45b7d1 100%);
    --gradient-secondary: linear-gradient(135deg, #1e293b 0%, #334155 100%);
    --gradient-accent: linear-gradient(135deg, #ff9a9e 0%, #fecfef 50%, #fecfef 100%);
    --gradient-hero: linear-gradient(135deg, #667eea 0%, #764ba2 25%, #f093fb 50%, #f5576c 75%, #4facfe 100%);
    --gradient-rainbow: linear-gradient(45deg, #ff6b6b, #4ecdc4, #45b7d1, #96ceb4, #feca57, #ff9ff3, #54a0ff);
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.5);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.6);
    --shadow-glow: 0 0 20px rgba(99, 102, 241, 0.3);
}

* {
    box-sizing: border-box;
}

body {
    font-family: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    margin: 0;
    padding: 0;
    overflow-x: hidden;
    animation: page-load 1s ease-out;
}

@keyframes page-load {
    0% {
        opacity: 0;
        transform: translateY(20px);
    }
    100% {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-secondary);
}

::-webkit-scrollbar-thumb {
    background: var(--primary-color);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--primary-dark);
}

/* Navigation Bar */
.navbar {
    background: var(--bg-glass);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(99, 102, 241, 0.2);
    padding: 1rem 0;
    box-shadow: var(--shadow-lg);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.navbar-brand .logo {
    height: 50px;
    filter: brightness(1.2);
    transition: transform 0.3s ease;
}

.navbar-brand .logo:hover {
    transform: scale(1.05);
}

.navbar-nav .nav-link {
    color: var(--text-secondary) !important;
    font-weight: 500;
    transition: all 0.3s ease;
    position: relative;
}

.navbar-nav .nav-link:hover,
.navbar-nav .nav-link.active {
    color: var(--accent-light) !important;
    transform: translateY(-2px);
}

.navbar-nav .nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--gradient-accent);
    transition: all 0.3s ease;
    transform: translateX(-50%);
}

.navbar-nav .nav-link:hover::after,
.navbar-nav .nav-link.active::after {
    width: 100%;
}

/* Hero Section */
.hero-section {
    padding: 8rem 0;
    background: var(--gradient-hero);
    position: relative;
    overflow: hidden;
    min-height: 100vh;
    display: flex;
    align-items: center;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 20% 80%, rgba(255, 107, 107, 0.3) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(78, 205, 196, 0.3) 0%, transparent 50%),
        radial-gradient(circle at 40% 40%, rgba(69, 183, 209, 0.2) 0%, transparent 50%);
    animation: hero-bg-move 15s ease-in-out infinite;
}

.hero-section::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="dots" width="20" height="20" patternUnits="userSpaceOnUse"><circle cx="10" cy="10" r="1" fill="rgba(255,255,255,0.1)"/></pattern></defs><rect width="100" height="100" fill="url(%23dots)"/></svg>');
    opacity: 0.4;
    animation: dots-float 20s linear infinite;
}

@keyframes hero-bg-move {
    0%, 100% { 
        transform: translate(0, 0) rotate(0deg);
        opacity: 0.8;
    }
    33% { 
        transform: translate(-20px, -20px) rotate(1deg);
        opacity: 0.6;
    }
    66% { 
        transform: translate(20px, -10px) rotate(-1deg);
        opacity: 0.9;
    }
}

@keyframes dots-float {
    0% { transform: translate(0, 0); }
    100% { transform: translate(20px, 20px); }
}

/* Particle Animation */
.particles-container {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 1;
}

.particle {
    position: absolute;
    width: 4px;
    height: 4px;
    background: rgba(255, 255, 255, 0.6);
    border-radius: 50%;
    animation: particle-float 8s linear infinite;
}

.particle:nth-child(1) {
    left: 10%;
    animation-delay: 0s;
    animation-duration: 8s;
}

.particle:nth-child(2) {
    left: 20%;
    animation-delay: 1s;
    animation-duration: 10s;
}

.particle:nth-child(3) {
    left: 30%;
    animation-delay: 2s;
    animation-duration: 12s;
}

.particle:nth-child(4) {
    left: 40%;
    animation-delay: 3s;
    animation-duration: 9s;
}

.particle:nth-child(5) {
    left: 50%;
    animation-delay: 4s;
    animation-duration: 11s;
}

.particle:nth-child(6) {
    left: 60%;
    animation-delay: 5s;
    animation-duration: 13s;
}

.particle:nth-child(7) {
    left: 70%;
    animation-delay: 6s;
    animation-duration: 8.5s;
}

.particle:nth-child(8) {
    left: 80%;
    animation-delay: 7s;
    animation-duration: 10.5s;
}

.particle:nth-child(9) {
    left: 90%;
    animation-delay: 8s;
    animation-duration: 9.5s;
}

.particle:nth-child(10) {
    left: 15%;
    animation-delay: 1.5s;
    animation-duration: 11.5s;
}

@keyframes particle-float {
    0% {
        transform: translateY(100vh) rotate(0deg);
        opacity: 0;
    }
    10% {
        opacity: 1;
    }
    90% {
        opacity: 1;
    }
    100% {
        transform: translateY(-100px) rotate(360deg);
        opacity: 0;
    }
}

.hero-section h1 {
    font-weight: 900;
    background: var(--gradient-rainbow);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 1.5rem;
    font-size: 4rem;
    line-height: 1.1;
    text-shadow: 0 4px 8px rgba(0, 0, 0, 0.3);
    position: relative;
    z-index: 2;
    animation: text-glow 3s ease-in-out infinite alternate;
}

.hero-section h2 {
    font-weight: 500;
    font-size: 1.6rem;
    color: var(--text-primary);
    margin-bottom: 2rem;
    position: relative;
    z-index: 2;
    animation: slide-in-up 1s ease-out 0.5s both;
}

@keyframes text-glow {
    0% { 
        filter: brightness(1) drop-shadow(0 0 10px rgba(255, 107, 107, 0.3));
    }
    100% { 
        filter: brightness(1.2) drop-shadow(0 0 20px rgba(78, 205, 196, 0.5));
    }
}

@keyframes slide-in-up {
    0% {
        opacity: 0;
        transform: translateY(30px);
    }
    100% {
        opacity: 1;
        transform: translateY(0);
    }
}

.hero-image-container {
    position: relative;
    perspective: 1000px;
    z-index: 2;
}

.floating-image {
    max-width: 100%;
    border-radius: 25px;
    box-shadow: 
        0 25px 50px -12px rgba(0, 0, 0, 0.6),
        0 0 30px rgba(255, 107, 107, 0.3),
        0 0 60px rgba(78, 205, 196, 0.2);
    animation: float-advanced 8s ease-in-out infinite;
    transform-style: preserve-3d;
    border: 3px solid transparent;
    background: linear-gradient(45deg, #ff6b6b, #4ecdc4, #45b7d1, #96ceb4) border-box;
    position: relative;
    overflow: hidden;
}

.floating-image::before {
    content: '';
    position: absolute;
    top: -2px;
    left: -2px;
    right: -2px;
    bottom: -2px;
    background: var(--gradient-rainbow);
    border-radius: 25px;
    z-index: -1;
    animation: border-rotate 4s linear infinite;
}

@keyframes float-advanced {
    0%, 100% { 
        transform: translateY(0) rotate(0) scale(1); 
        filter: hue-rotate(0deg);
    }
    25% { 
        transform: translateY(-20px) rotate(2deg) scale(1.05); 
        filter: hue-rotate(90deg);
    }
    50% { 
        transform: translateY(-10px) rotate(-1deg) scale(0.95); 
        filter: hue-rotate(180deg);
    }
    75% { 
        transform: translateY(-15px) rotate(1deg) scale(1.02); 
        filter: hue-rotate(270deg);
    }
}

@keyframes border-rotate {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* AI Brain Animation */
.hero-image-placeholder {
    width: 100%;
    height: 400px;
    background: var(--gradient-rainbow);
    border-radius: 25px;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    box-shadow: 
        0 25px 50px -12px rgba(0, 0, 0, 0.6),
        0 0 30px rgba(255, 107, 107, 0.3),
        0 0 60px rgba(78, 205, 196, 0.2);
    animation: float-advanced 8s ease-in-out infinite;
}

.ai-brain-animation {
    position: absolute;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.brain-cell {
    position: absolute;
    width: 20px;
    height: 20px;
    background: rgba(255, 255, 255, 0.8);
    border-radius: 50%;
    box-shadow: 0 0 20px rgba(255, 255, 255, 0.6);
    animation: brain-pulse 2s ease-in-out infinite;
}

.brain-cell:nth-child(1) {
    top: 20%;
    left: 30%;
    animation-delay: 0s;
    animation-duration: 2s;
}

.brain-cell:nth-child(2) {
    top: 40%;
    left: 20%;
    animation-delay: 0.3s;
    animation-duration: 2.5s;
}

.brain-cell:nth-child(3) {
    top: 60%;
    left: 35%;
    animation-delay: 0.6s;
    animation-duration: 2.2s;
}

.brain-cell:nth-child(4) {
    top: 30%;
    right: 25%;
    animation-delay: 0.9s;
    animation-duration: 2.8s;
}

.brain-cell:nth-child(5) {
    top: 50%;
    right: 15%;
    animation-delay: 1.2s;
    animation-duration: 2.3s;
}

.brain-cell:nth-child(6) {
    top: 70%;
    right: 30%;
    animation-delay: 1.5s;
    animation-duration: 2.6s;
}

.ai-text-overlay {
    position: relative;
    z-index: 10;
    text-align: center;
    color: white;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.5);
}

.ai-text-overlay h3 {
    font-size: 2.5rem;
    font-weight: 900;
    margin-bottom: 0.5rem;
    animation: text-bounce 2s ease-in-out infinite;
}

.ai-text-overlay p {
    font-size: 1.2rem;
    font-weight: 500;
    opacity: 0.9;
    animation: text-fade 3s ease-in-out infinite;
}

@keyframes brain-pulse {
    0%, 100% {
        transform: scale(1);
        opacity: 0.8;
        box-shadow: 0 0 20px rgba(255, 255, 255, 0.6);
    }
    50% {
        transform: scale(1.5);
        opacity: 1;
        box-shadow: 0 0 40px rgba(255, 255, 255, 0.9);
    }
}

@keyframes text-bounce {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-10px);
    }
}

@keyframes text-fade {
    0%, 100% {
        opacity: 0.9;
    }
    50% {
        opacity: 0.6;
    }
}

/* CTA Buttons */
.cta-buttons .btn {
    padding: 1rem 2rem;
    font-weight: 600;
    border-radius: 50px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
    border: none;
}

.cta-buttons .btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s;
}

.cta-buttons .btn:hover::before {
    left: 100%;
}

.cta-buttons .btn-primary {
    background: var(--gradient-primary);
    color: white;
    box-shadow: var(--shadow-lg);
    animation: button-pulse 2s ease-in-out infinite;
}

.cta-buttons .btn-primary:hover {
    transform: translateY(-3px) scale(1.05);
    box-shadow: var(--shadow-xl), 0 0 30px rgba(255, 107, 107, 0.4);
    animation: none;
}

.cta-buttons .btn-outline-primary {
    background: transparent;
    color: #ff6b6b;
    border: 2px solid #ff6b6b;
    backdrop-filter: blur(10px);
    position: relative;
    overflow: hidden;
}

.cta-buttons .btn-outline-primary::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: var(--gradient-primary);
    transition: left 0.5s;
    z-index: -1;
}

.cta-buttons .btn-outline-primary:hover::before {
    left: 0;
}

.cta-buttons .btn-outline-primary:hover {
    color: white;
    border-color: transparent;
    transform: translateY(-3px) scale(1.05);
    box-shadow: var(--shadow-xl), 0 0 30px rgba(255, 107, 107, 0.4);
}

@keyframes button-pulse {
    0%, 100% { 
        box-shadow: var(--shadow-lg), 0 0 20px rgba(255, 107, 107, 0.3);
    }
    50% { 
        box-shadow: var(--shadow-lg), 0 0 30px rgba(78, 205, 196, 0.5);
    }
}

/* AI Proctor Features Section */
.ai-proctor-features {
    background: var(--bg-secondary);
    padding: 8rem 0;
    position: relative;
    overflow: hidden;
}

.ai-proctor-features::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 20% 80%, rgba(99, 102, 241, 0.1) 0%, transparent 50%),
                radial-gradient(circle at 80% 20%, rgba(139, 92, 246, 0.1) 0%, transparent 50%);
}

.ai-proctor-illustration {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 2;
}

.ai-head-graphic {
    position: relative;
    width: 400px;
    height: 400px;
    background: var(--gradient-rainbow);
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    box-shadow: 
        var(--shadow-xl), 
        0 0 40px rgba(255, 107, 107, 0.4),
        0 0 80px rgba(78, 205, 196, 0.3),
        0 0 120px rgba(69, 183, 209, 0.2);
    border: 4px solid transparent;
    background-clip: padding-box;
    animation: ai-pulse-advanced 6s ease-in-out infinite;
    position: relative;
    overflow: hidden;
}

.ai-head-graphic::before {
    content: '';
    position: absolute;
    top: -4px;
    left: -4px;
    right: -4px;
    bottom: -4px;
    background: var(--gradient-rainbow);
    border-radius: 50%;
    z-index: -1;
    animation: border-spin 8s linear infinite;
}

@keyframes ai-pulse-advanced {
    0%, 100% { 
        transform: scale(1);
        filter: hue-rotate(0deg);
        box-shadow: 
            var(--shadow-xl), 
            0 0 40px rgba(255, 107, 107, 0.4),
            0 0 80px rgba(78, 205, 196, 0.3),
            0 0 120px rgba(69, 183, 209, 0.2);
    }
    25% { 
        transform: scale(1.05);
        filter: hue-rotate(90deg);
        box-shadow: 
            var(--shadow-xl), 
            0 0 50px rgba(78, 205, 196, 0.5),
            0 0 100px rgba(69, 183, 209, 0.4),
            0 0 150px rgba(150, 206, 180, 0.3);
    }
    50% { 
        transform: scale(1.1);
        filter: hue-rotate(180deg);
        box-shadow: 
            var(--shadow-xl), 
            0 0 60px rgba(69, 183, 209, 0.6),
            0 0 120px rgba(150, 206, 180, 0.5),
            0 0 180px rgba(254, 202, 87, 0.4);
    }
    75% { 
        transform: scale(1.05);
        filter: hue-rotate(270deg);
        box-shadow: 
            var(--shadow-xl), 
            0 0 50px rgba(150, 206, 180, 0.5),
            0 0 100px rgba(254, 202, 87, 0.4),
            0 0 150px rgba(255, 159, 243, 0.3);
    }
}

@keyframes border-spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.ai-text {
    position: absolute;
    font-size: 4rem;
    font-weight: 900;
    color: rgba(255, 255, 255, 0.1);
    z-index: 1;
    text-shadow: 0 0 20px rgba(255, 255, 255, 0.2);
}

.circuit-lines {
    position: absolute;
    width: 100%;
    height: 100%;
    background-image: 
        radial-gradient(circle at 30% 30%, rgba(103, 232, 249, 0.2) 2px, transparent 2px),
        radial-gradient(circle at 70% 70%, rgba(139, 92, 246, 0.2) 2px, transparent 2px),
        linear-gradient(45deg, transparent 48%, rgba(103, 232, 249, 0.1) 49%, rgba(103, 232, 249, 0.1) 51%, transparent 52%);
    background-size: 60px 60px, 40px 40px, 20px 20px;
    opacity: 0.6;
    animation: circuit-pulse 6s infinite alternate;
}

@keyframes circuit-pulse {
    0% { 
        opacity: 0.4;
        transform: rotate(0deg);
    }
    100% { 
        opacity: 0.8;
        transform: rotate(360deg);
    }
}

.floating-dots {
    position: absolute;
    width: 100%;
    height: 100%;
}

.floating-dots::before,
.floating-dots::after {
    content: '';
    position: absolute;
    background: #ff6b6b;
    border-radius: 50%;
    box-shadow: 0 0 15px #ff6b6b;
    animation: dot-glow 2s ease-in-out infinite alternate;
}

.floating-dots::before {
    width: 15px;
    height: 15px;
    top: 20%;
    left: 10%;
    background: #4ecdc4;
    box-shadow: 0 0 20px #4ecdc4;
    animation: float-dot-advanced 4s infinite alternate;
}

.floating-dots::after {
    width: 20px;
    height: 20px;
    top: 70%;
    right: 10%;
    background: #45b7d1;
    box-shadow: 0 0 25px #45b7d1;
    animation: float-dot-advanced 3s infinite alternate;
}

@keyframes float-dot-advanced {
    0% { 
        transform: translateY(0) scale(1) rotate(0deg);
        opacity: 0.7;
        filter: hue-rotate(0deg);
    }
    100% { 
        transform: translateY(-40px) scale(1.3) rotate(180deg);
        opacity: 1;
        filter: hue-rotate(180deg);
    }
}

@keyframes dot-glow {
    0% { 
        box-shadow: 0 0 10px currentColor;
    }
    100% { 
        box-shadow: 0 0 30px currentColor, 0 0 50px currentColor;
    }
}

/* Neural Network Animation */
.neural-network {
    position: absolute;
    width: 100%;
    height: 100%;
    pointer-events: none;
}

.neuron {
    position: absolute;
    width: 8px;
    height: 8px;
    background: rgba(255, 255, 255, 0.8);
    border-radius: 50%;
    box-shadow: 0 0 10px rgba(255, 255, 255, 0.6);
    animation: neuron-pulse 3s ease-in-out infinite;
}

.neuron:nth-child(1) {
    top: 15%;
    left: 25%;
    animation-delay: 0s;
}

.neuron:nth-child(2) {
    top: 25%;
    left: 60%;
    animation-delay: 0.4s;
}

.neuron:nth-child(3) {
    top: 45%;
    left: 20%;
    animation-delay: 0.8s;
}

.neuron:nth-child(4) {
    top: 55%;
    left: 70%;
    animation-delay: 1.2s;
}

.neuron:nth-child(5) {
    top: 75%;
    left: 30%;
    animation-delay: 1.6s;
}

.neuron:nth-child(6) {
    top: 35%;
    left: 45%;
    animation-delay: 2s;
}

.neuron:nth-child(7) {
    top: 65%;
    left: 50%;
    animation-delay: 2.4s;
}

.neuron:nth-child(8) {
    top: 85%;
    left: 60%;
    animation-delay: 2.8s;
}

@keyframes neuron-pulse {
    0%, 100% {
        transform: scale(1);
        opacity: 0.6;
        box-shadow: 0 0 10px rgba(255, 255, 255, 0.6);
    }
    50% {
        transform: scale(1.8);
        opacity: 1;
        box-shadow: 0 0 20px rgba(255, 255, 255, 0.9);
    }
}

/* Section Titles */
.section-title {
    font-size: 3rem;
    margin-bottom: 1.5rem;
    font-weight: 800;
    color: var(--text-primary);
    text-align: center;
    position: relative;
    z-index: 2;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    width: 80px;
    height: 4px;
    background: var(--gradient-accent);
    border-radius: 2px;
    transform: translateX(-50%);
}

.section-subtitle {
    font-size: 1.3rem;
    margin-bottom: 3rem;
    font-weight: 400;
    color: var(--text-secondary);
    text-align: center;
    position: relative;
    z-index: 2;
}

/* Features List */
.features-list {
    list-style-type: none;
    padding: 0;
    color: var(--text-primary);
    position: relative;
    z-index: 2;
}

.features-list li {
    position: relative;
    padding: 1rem 0 1rem 3rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
    font-size: 1.1rem;
    line-height: 1.6;
    background: var(--bg-glass);
    border-radius: 15px;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(99, 102, 241, 0.2);
    transition: all 0.3s ease;
}

.features-list li:hover {
    transform: translateX(10px);
    border-color: var(--accent-color);
    box-shadow: var(--shadow-md);
}

.features-list li::before {
    content: '✓';
    position: absolute;
    left: 1rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--success-color);
    font-weight: 900;
    font-size: 1.2rem;
    background: var(--gradient-accent);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Advanced Features Section */
.advanced-features-section {
    background: var(--bg-primary);
    padding: 8rem 0;
    position: relative;
    overflow: hidden;
}

.advanced-features-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 10% 20%, rgba(99, 102, 241, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 90% 80%, rgba(139, 92, 246, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 50% 50%, rgba(6, 182, 212, 0.05) 0%, transparent 70%);
}

/* Feature Cards */
.feature-card {
    background: var(--bg-card);
    border-radius: 20px;
    padding: 2.5rem;
    text-align: center;
    box-shadow: var(--shadow-lg);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    border: 1px solid rgba(255, 107, 107, 0.2);
    position: relative;
    overflow: hidden;
    backdrop-filter: blur(10px);
    opacity: 0;
    transform: translateY(50px);
    animation: slide-up-fade 0.8s ease-out forwards;
}

.feature-card:nth-child(1) { animation-delay: 0.1s; }
.feature-card:nth-child(2) { animation-delay: 0.2s; }
.feature-card:nth-child(3) { animation-delay: 0.3s; }
.feature-card:nth-child(4) { animation-delay: 0.4s; }
.feature-card:nth-child(5) { animation-delay: 0.5s; }
.feature-card:nth-child(6) { animation-delay: 0.6s; }

@keyframes slide-up-fade {
    0% {
        opacity: 0;
        transform: translateY(50px);
    }
    100% {
        opacity: 1;
        transform: translateY(0);
    }
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(99, 102, 241, 0.1), transparent);
    transition: left 0.6s;
}

.feature-card:hover::before {
    left: 100%;
}

.feature-card:hover {
    transform: translateY(-15px) scale(1.02) rotateY(5deg);
    box-shadow: var(--shadow-xl), 0 0 30px rgba(255, 107, 107, 0.3);
    border-color: #ff6b6b;
    animation: card-glow 2s ease-in-out infinite;
}

.feature-icon {
    width: 120px;
    height: 120px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 2rem;
    box-shadow: var(--shadow-lg), var(--shadow-glow);
    border: 3px solid rgba(99, 102, 241, 0.3);
    transition: all 0.3s ease;
    position: relative;
    z-index: 2;
}

.feature-card:hover .feature-icon {
    transform: scale(1.1) rotate(5deg);
    box-shadow: var(--shadow-xl), 0 0 40px rgba(99, 102, 241, 0.4);
}

.feature-icon img {
    width: 70px;
    height: 70px;
    filter: brightness(1.2) contrast(1.1);
    transition: all 0.3s ease;
}

.feature-card:hover .feature-icon img {
    transform: scale(1.1) rotate(10deg);
    filter: brightness(1.3) contrast(1.2);
}

@keyframes card-glow {
    0%, 100% {
        box-shadow: var(--shadow-xl), 0 0 30px rgba(255, 107, 107, 0.3);
    }
    50% {
        box-shadow: var(--shadow-xl), 0 0 50px rgba(78, 205, 196, 0.5);
    }
}

.feature-card h3 {
    font-size: 1.4rem;
    color: var(--text-primary);
    margin-bottom: 1.5rem;
    font-weight: 700;
    position: relative;
    z-index: 2;
}

.feature-card p {
    color: var(--text-secondary);
    font-size: 1rem;
    line-height: 1.6;
    position: relative;
    z-index: 2;
}

/* Data Storage Note */
.data-storage-note {
    background: var(--bg-glass);
    padding: 2rem;
    border-radius: 15px;
    color: var(--text-primary);
    font-size: 1rem;
    border: 1px solid rgba(6, 182, 212, 0.3);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-md);
    position: relative;
    z-index: 2;
}

.data-storage-note strong {
    color: var(--accent-light);
    font-weight: 700;
}

/* Contact Section */
.contact-section {
    background: var(--bg-secondary);
    padding: 6rem 0;
    position: relative;
    overflow: hidden;
}

.contact-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 30% 70%, rgba(6, 182, 212, 0.1) 0%, transparent 50%);
}

.contact-form {
    background: var(--bg-glass);
    padding: 3rem;
    border-radius: 20px;
    backdrop-filter: blur(20px);
    border: 1px solid rgba(99, 102, 241, 0.2);
    box-shadow: var(--shadow-xl);
    position: relative;
    z-index: 2;
}

.contact-form .form-control {
    background: var(--bg-tertiary);
    border: 1px solid rgba(99, 102, 241, 0.3);
    border-radius: 10px;
    color: var(--text-primary);
    padding: 1rem;
    transition: all 0.3s ease;
}

.contact-form .form-control:focus {
    background: var(--bg-tertiary);
    border-color: var(--accent-color);
    color: var(--text-primary);
    box-shadow: 0 0 0 0.2rem rgba(6, 182, 212, 0.25);
}

.contact-form .form-control::placeholder {
    color: var(--text-muted);
}

/* Footer */
.footer {
    background: var(--bg-primary);
    padding: 3rem 0 2rem;
    border-top: 1px solid rgba(99, 102, 241, 0.2);
    position: relative;
}

.footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: var(--gradient-accent);
}

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

.footer-links {
    margin-bottom: 1.5rem;
}

.footer-links a {
    color: var(--text-muted);
    text-decoration: none;
    margin: 0 1rem;
    transition: color 0.3s ease;
}

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

.social-links a {
    display: inline-block;
    width: 40px;
    height: 40px;
    background: var(--bg-secondary);
    border-radius: 50%;
    text-align: center;
    line-height: 40px;
    color: var(--text-secondary);
    transition: all 0.3s ease;
    border: 1px solid rgba(99, 102, 241, 0.2);
}

.social-links a:hover {
    background: var(--gradient-accent);
    color: var(--bg-primary);
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
}

/* Responsive Design */
@media (max-width: 768px) {
    .hero-section h1 {
        font-size: 2.5rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .feature-card {
        margin-bottom: 2rem;
    }
    
    .ai-head-graphic {
        width: 300px;
        height: 300px;
    }
    
    .contact-form {
        padding: 2rem;
    }
}

@media (max-width: 576px) {
    .hero-section {
        padding: 4rem 0;
    }
    
    .hero-section h1 {
        font-size: 2rem;
    }
    
    .cta-buttons .btn {
        padding: 0.8rem 1.5rem;
        font-size: 0.9rem;
    }
}