/* Smart AI School Platform - Marvelous Educational UI */
@import url('https://unpkg.com/aos@2.3.1/dist/aos.css');

:root {
    --primary-color: #10b981;
    --primary-dark: #059669;
    --secondary-color: #3b82f6;
    --accent-color: #f59e0b;
    --dark-bg: #0f172a;
    --dark-surface: #1e293b;
    --dark-card: #334155;
    --text-primary: #ffffff;
    --text-secondary: #cbd5e1;
    --text-muted: #94a3b8;
    --border-color: #475569;
    --gradient-primary: linear-gradient(135deg, #10b981 0%, #3b82f6 100%);
    --gradient-secondary: linear-gradient(135deg, #f59e0b 0%, #ef4444 100%);
    --shadow-lg: 0 20px 40px rgba(16, 185, 129, 0.1);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

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

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(15, 23, 42, 0.95);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
    z-index: 1000;
    transition: var(--transition);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 16px 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 16px;
}

.logo-icon {
    position: relative;
    width: 40px;
    height: 40px;
}

.logo-book {
    width: 100%;
    height: 100%;
    position: relative;
    background: var(--gradient-primary);
    border-radius: 4px;
    transform: perspective(100px) rotateY(-15deg);
}

.book-pages {
    position: absolute;
    top: 2px;
    right: 2px;
    width: 4px;
    height: calc(100% - 4px);
    background: rgba(255, 255, 255, 0.3);
    border-radius: 0 2px 2px 0;
}

.book-spine {
    position: absolute;
    left: 0;
    top: 0;
    width: 4px;
    height: 100%;
    background: var(--primary-dark);
    border-radius: 2px 0 0 2px;
}

.logo-text .company-name {
    font-size: 18px;
    font-weight: 700;
    color: var(--text-primary);
    display: block;
}

.logo-text .product-name {
    font-size: 12px;
    color: var(--primary-color);
    font-weight: 500;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 32px;
}

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

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

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    transition: width 0.3s ease;
}

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

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    border-radius: 8px;
    font-weight: 600;
    text-decoration: none;
    transition: var(--transition);
    border: none;
    cursor: pointer;
    font-size: 14px;
    position: relative;
    overflow: hidden;
}

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

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 25px 50px rgba(16, 185, 129, 0.2);
}

.btn-outline {
    background: transparent;
    color: var(--primary-color);
    border: 1px solid var(--primary-color);
}

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

.btn-secondary {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-primary);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

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

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
}

.education-pattern {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at 30% 40%, rgba(16, 185, 129, 0.1) 0%, transparent 50%),
                radial-gradient(circle at 70% 60%, rgba(59, 130, 246, 0.1) 0%, transparent 50%);
}

.hero-content {
    flex: 1;
    max-width: 600px;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(16, 185, 129, 0.1);
    border: 1px solid rgba(16, 185, 129, 0.3);
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 14px;
    font-weight: 500;
    color: var(--primary-color);
    margin-bottom: 24px;
}

.hero-title {
    font-size: 64px;
    font-weight: 900;
    line-height: 1.1;
    margin-bottom: 24px;
}

.title-line {
    display: block;
}

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

.hero-subtitle {
    font-size: 20px;
    color: var(--text-secondary);
    margin-bottom: 40px;
    line-height: 1.6;
}

.hero-stats {
    display: flex;
    gap: 24px;
    margin-bottom: 40px;
}

.stat-card {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-color);
    padding: 20px;
    border-radius: 12px;
    text-align: center;
    backdrop-filter: blur(10px);
    flex: 1;
}

.stat-icon {
    color: var(--primary-color);
    font-size: 20px;
    margin-bottom: 8px;
}

.stat-value {
    font-size: 24px;
    font-weight: 800;
    color: var(--primary-color);
    display: block;
    margin-bottom: 4px;
}

.stat-label {
    font-size: 12px;
    color: var(--text-muted);
    font-weight: 500;
}

.hero-actions {
    display: flex;
    gap: 16px;
}

.hero-visual {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
}

.learning-visualization {
    position: relative;
    width: 400px;
    height: 400px;
}

.brain-center {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 100px;
    height: 100px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 40px;
    animation: pulse 3s infinite;
}

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

.learning-nodes {
    position: absolute;
    width: 100%;
    height: 100%;
}

.node {
    position: absolute;
    width: 60px;
    height: 60px;
    background: var(--dark-card);
    border: 2px solid var(--primary-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 10px;
    font-weight: 600;
    color: var(--primary-color);
    cursor: pointer;
    transition: var(--transition);
}

.node:hover {
    background: var(--primary-color);
    color: white;
    transform: scale(1.2);
}

.node-1 { top: 0; left: 50%; transform: translateX(-50%); }
.node-2 { top: 25%; right: 0; }
.node-3 { bottom: 25%; right: 0; }
.node-4 { bottom: 0; left: 50%; transform: translateX(-50%); }
.node-5 { bottom: 25%; left: 0; }
.node-6 { top: 25%; left: 0; }

/* Features Section */
.features {
    padding: 120px 0;
    background: var(--dark-surface);
}

.section-header {
    text-align: center;
    margin-bottom: 80px;
}

.section-badge {
    display: inline-block;
    background: rgba(59, 130, 246, 0.1);
    border: 1px solid rgba(59, 130, 246, 0.3);
    padding: 6px 16px;
    border-radius: 16px;
    font-size: 12px;
    font-weight: 600;
    color: var(--secondary-color);
    margin-bottom: 16px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.section-title {
    font-size: 48px;
    font-weight: 800;
    margin-bottom: 16px;
    color: var(--text-primary);
}

.section-subtitle {
    font-size: 18px;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 32px;
}

.feature-card {
    background: var(--dark-bg);
    border: 1px solid var(--border-color);
    padding: 32px;
    border-radius: 16px;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background: var(--gradient-primary);
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

.feature-card:hover::before {
    transform: scaleX(1);
}

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

.card-header {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 16px;
}

.card-icon {
    width: 48px;
    height: 48px;
    background: var(--gradient-primary);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 20px;
}

.card-header h3 {
    font-size: 20px;
    font-weight: 700;
    color: var(--text-primary);
}

.feature-card p {
    color: var(--text-secondary);
    margin-bottom: 24px;
    line-height: 1.6;
}

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

.feature-list li {
    color: var(--text-muted);
    margin-bottom: 8px;
    padding-left: 20px;
    position: relative;
}

.feature-list li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--primary-color);
    font-weight: bold;
}

.card-footer {
    margin-top: auto;
}

.progress-indicator {
    display: flex;
    align-items: center;
    gap: 12px;
}

.progress-bar {
    flex: 1;
    height: 6px;
    background: rgba(16, 185, 129, 0.2);
    border-radius: 3px;
    overflow: hidden;
    position: relative;
}

.progress-bar::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    height: 100%;
    background: var(--gradient-primary);
    border-radius: 3px;
    width: 0;
    transition: width 2s ease;
}

.availability-indicator {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--primary-color);
    font-size: 14px;
    font-weight: 600;
}

.status-dot {
    width: 8px;
    height: 8px;
    background: var(--primary-color);
    border-radius: 50%;
    animation: blink 2s infinite;
}

@keyframes blink {
    0%, 50% { opacity: 1; }
    51%, 100% { opacity: 0.3; }
}

.engagement-meter {
    display: flex;
    align-items: center;
    gap: 12px;
}

.meter-fill {
    flex: 1;
    height: 8px;
    background: rgba(245, 158, 11, 0.2);
    border-radius: 4px;
    position: relative;
    overflow: hidden;
}

.meter-fill::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    height: 100%;
    background: var(--gradient-secondary);
    border-radius: 4px;
    width: 0;
    transition: width 2s ease;
}

.insights-counter {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--accent-color);
    font-size: 14px;
    font-weight: 600;
}

/* Learning Journey Section */
.learning-journey {
    padding: 120px 0;
}

.journey-timeline {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
}

.journey-timeline::before {
    content: '';
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--gradient-primary);
    transform: translateX(-50%);
}

.timeline-item {
    display: flex;
    align-items: center;
    margin-bottom: 60px;
    position: relative;
}

.timeline-item:nth-child(even) {
    flex-direction: row-reverse;
}

.timeline-icon {
    width: 60px;
    height: 60px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 20px;
    position: relative;
    z-index: 2;
    margin: 0 40px;
}

.timeline-content {
    flex: 1;
    background: var(--dark-card);
    padding: 24px;
    border-radius: 12px;
    border: 1px solid var(--border-color);
}

.timeline-content h4 {
    font-size: 18px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.timeline-content p {
    color: var(--text-secondary);
    line-height: 1.6;
}

/* Solutions Section */
.solutions {
    padding: 120px 0;
    background: var(--dark-surface);
}

.solutions-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 32px;
}

.solution-card {
    background: var(--dark-bg);
    border: 1px solid var(--border-color);
    padding: 40px;
    border-radius: 16px;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

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

.solution-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 20px;
}

.solution-icon {
    width: 60px;
    height: 60px;
    background: var(--gradient-primary);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    color: white;
}

.solution-badge {
    background: var(--gradient-secondary);
    color: white;
    padding: 4px 12px;
    border-radius: 12px;
    font-size: 12px;
    font-weight: 600;
}

.solution-card h3 {
    font-size: 24px;
    font-weight: 700;
    color: var(--text-primary);
    margin: 16px 0;
}

.solution-card p {
    color: var(--text-secondary);
    margin-bottom: 24px;
    line-height: 1.6;
}

.solution-features {
    margin-bottom: 24px;
}

.feature-item {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 12px;
    color: var(--text-secondary);
}

.feature-item i {
    color: var(--primary-color);
    font-size: 14px;
}

.solution-stats {
    display: flex;
    gap: 24px;
}

.stat {
    text-align: center;
}

.stat-number {
    font-size: 20px;
    font-weight: 800;
    color: var(--primary-color);
    display: block;
}

.stat-text {
    font-size: 12px;
    color: var(--text-muted);
}

/* Contact Section */
.contact {
    padding: 120px 0;
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: start;
}

.contact-info h2 {
    font-size: 40px;
    font-weight: 800;
    margin-bottom: 16px;
    color: var(--text-primary);
}

.contact-info p {
    color: var(--text-secondary);
    margin-bottom: 40px;
    font-size: 18px;
    line-height: 1.6;
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

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

.contact-icon {
    width: 48px;
    height: 48px;
    background: var(--gradient-primary);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 18px;
}

.contact-text {
    display: flex;
    flex-direction: column;
}

.contact-label {
    font-size: 12px;
    color: var(--text-muted);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.contact-value {
    font-size: 16px;
    color: var(--text-primary);
    font-weight: 600;
}

.contact-form {
    background: var(--dark-card);
    border: 1px solid var(--border-color);
    padding: 40px;
    border-radius: 16px;
}

.form-header {
    margin-bottom: 32px;
}

.form-header h3 {
    font-size: 24px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.form-header p {
    color: var(--text-secondary);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    margin-bottom: 24px;
}

.form-group {
    margin-bottom: 24px;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 16px;
    background: var(--dark-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-primary);
    font-size: 16px;
    transition: var(--transition);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.1);
}

.btn-full {
    width: 100%;
    justify-content: center;
    padding: 16px 24px;
    font-size: 16px;
}

/* Footer */
.footer {
    background: var(--dark-surface);
    padding: 80px 0 40px;
    border-top: 1px solid var(--border-color);
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 80px;
    margin-bottom: 40px;
}

.footer-brand {
    max-width: 300px;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 16px;
}

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

.footer-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
}

.footer-column h4 {
    color: var(--text-primary);
    margin-bottom: 16px;
    font-weight: 600;
}

.footer-column ul {
    list-style: none;
}

.footer-column ul li {
    margin-bottom: 8px;
}

.footer-column ul li a {
    color: var(--text-muted);
    text-decoration: none;
    transition: var(--transition);
}

.footer-column ul li a:hover {
    color: var(--primary-color);
}

.footer-bottom {
    text-align: center;
    padding-top: 40px;
    border-top: 1px solid var(--border-color);
    color: var(--text-muted);
}

/* Mobile Responsive Design - MNC Grade */
@media (max-width: 768px) {
    .container {
        padding: 0 16px;
    }
    
    .hero {
        padding-top: 100px;
        flex-direction: column;
        text-align: center;
    }
    
    .hero-content {
        max-width: 100%;
        margin-bottom: 40px;
    }
    
    .hero-title {
        font-size: 36px;
        line-height: 1.2;
    }
    
    .hero-subtitle {
        font-size: 16px;
    }
    
    .hero-stats {
        flex-direction: column;
        gap: 12px;
    }
    
    .stat-card {
        padding: 16px;
    }
    
    .hero-actions {
        flex-direction: column;
        gap: 12px;
    }
    
    .btn {
        padding: 14px 20px;
        font-size: 16px;
        width: 100%;
        justify-content: center;
    }
    
    /* Learning Journey Mobile */
    .learning-showcase {
        padding: 20px 0;
        overflow: hidden;
    }
    
    .learning-visual {
        padding: 40px 20px;
        overflow: visible;
    }
    
    .learning-journey {
        width: 280px;
        height: 280px;
        margin: 0 auto;
    }
    
    .journey-center {
        width: 90px;
        height: 90px;
        font-size: 12px;
    }
    
    .journey-center i {
        font-size: 20px;
    }
    
    .subject-node {
        width: 55px;
        height: 55px;
        font-size: 16px;
    }
    
    .subject-node:nth-child(1) { top: -27px; left: 50%; transform: translateX(-50%); }
    .subject-node:nth-child(2) { top: 50%; right: -27px; transform: translateY(-50%); }
    .subject-node:nth-child(3) { bottom: -27px; left: 50%; transform: translateX(-50%); }
    .subject-node:nth-child(4) { top: 50%; left: -27px; transform: translateY(-50%); }
    .subject-node:nth-child(5) { top: 20%; right: -20px; }
    .subject-node:nth-child(6) { bottom: 20%; left: -20px; }
    
    /* Timeline Mobile */
    .journey-timeline::before {
        left: 30px;
    }
    
    .timeline-item {
        flex-direction: row !important;
        padding-left: 80px;
    }
    
    .timeline-icon {
        position: absolute;
        left: 0;
        margin: 0;
    }
    
    /* Features Grid Mobile */
    .features-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .feature-card {
        padding: 20px;
    }
    
    .feature-card h3 {
        font-size: 18px;
    }
    
    .feature-card p {
        font-size: 14px;
    }
    
    /* Contact Section Mobile */
    .contact-content {
        grid-template-columns: 1fr;
        gap: 32px;
    }
    
    .contact-info h2 {
        font-size: 28px;
    }
    
    .contact-form {
        padding: 20px;
    }
    
    .form-row {
        grid-template-columns: 1fr;
        gap: 16px;
    }
    
    /* Footer Mobile */
    .footer-content {
        grid-template-columns: 1fr;
        gap: 32px;
    }
    
    .footer-links {
        grid-template-columns: repeat(2, 1fr);
        gap: 24px;
    }
    
    /* Navigation Mobile */
    .nav-container {
        padding: 12px 16px;
    }
    
    .logo-text .company-name {
        font-size: 16px;
    }
    
    .logo-text .product-name {
        font-size: 11px;
    }
    
    .nav-menu {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background: var(--dark-bg);
        flex-direction: column;
        padding: 20px;
        border-top: 1px solid var(--border-color);
    }
    
    .nav-menu.active {
        display: flex;
    }
    
    .nav-menu li {
        margin-bottom: 16px;
    }
    
    .nav-actions {
        gap: 8px;
    }
    
    .nav-actions .btn {
        padding: 8px 16px;
        font-size: 14px;
        width: auto;
    }
    
    /* Section Headers Mobile */
    .section-title {
        font-size: 32px;
        text-align: center;
    }
    
    .section-subtitle {
        font-size: 16px;
        text-align: center;
    }
    
    .section-badge {
        font-size: 11px;
        padding: 4px 12px;
    }
}

/* Extra Small Mobile */
@media (max-width: 480px) {
    .hero-title {
        font-size: 32px;
    }
    
    .learning-visual {
        padding: 20px 10px;
    }
    
    .learning-journey {
        width: 240px;
        height: 240px;
    }
    
    .journey-center {
        width: 80px;
        height: 80px;
        font-size: 11px;
    }
    
    .journey-center i {
        font-size: 18px;
    }
    
    .subject-node {
        width: 50px;
        height: 50px;
        font-size: 14px;
    }
    
    .subject-node:nth-child(1) { top: -25px; left: 50%; transform: translateX(-50%); }
    .subject-node:nth-child(2) { top: 50%; right: -25px; transform: translateY(-50%); }
    .subject-node:nth-child(3) { bottom: -25px; left: 50%; transform: translateX(-50%); }
    .subject-node:nth-child(4) { top: 50%; left: -25px; transform: translateY(-50%); }
    .subject-node:nth-child(5) { top: 20%; right: -18px; }
    .subject-node:nth-child(6) { bottom: 20%; left: -18px; }
    
    .section-title {
        font-size: 28px;
    }
    
    .footer-links {
        grid-template-columns: 1fr;
    }
}

/* Hamburger Menu */
.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 4px;
}

.hamburger span {
    width: 25px;
    height: 3px;
    background: var(--text-primary);
    transition: var(--transition);
}

@media (max-width: 768px) {
    .nav-menu {
        display: none;
    }
    
    .hamburger {
        display: flex;
    }
}