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

:root {
    /* Light Mode Colors (Beige & Orange) */
    --bg-primary: linear-gradient(135deg, #FFF5E6 0%, #FFE4CC 50%, #FFF8DC 100%);
    --bg-secondary: #FFFFFF;
    --text-primary: #2D1810;
    --text-secondary: #5C4033;
    --accent-primary: #FF8C42;
    --accent-secondary: #FFB366;
    --accent-gradient: linear-gradient(135deg, #FF8C42 0%, #FFB366 100%);
    --border-color: #FFD4A3;
    --card-bg: rgba(255, 255, 255, 0.7);
    --nav-bg: rgba(255, 255, 255, 0.9);
    --shadow: rgba(255, 140, 66, 0.1);
    
    /* Transition */
    --transition: all 0.3s ease;
}

body.dark-mode {
    /* Dark Mode Colors */
    --bg-primary: linear-gradient(135deg, #0F1419 0%, #1A1F2E 50%, #0F1419 100%);
    --bg-secondary: #1A1F2E;
    --text-primary: #FFFFFF;
    --text-secondary: #B4B4B4;
    --accent-primary: #A78BFA;
    --accent-secondary: #C4B5FD;
    --accent-gradient: linear-gradient(135deg, #A78BFA 0%, #EC4899 100%);
    --border-color: #2D3748;
    --card-bg: rgba(26, 31, 46, 0.7);
    --nav-bg: rgba(26, 31, 46, 0.95);
    --shadow: rgba(167, 139, 250, 0.1);
}

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

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Navigation */
.navbar {
    position: sticky;
    top: 0;
    background: var(--nav-bg);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    z-index: 1000;
    transition: var(--transition);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
}

.logo-icon {
    width: 32px;
    height: 32px;
    color: var(--accent-primary);
}

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 4px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.mobile-menu-btn span {
    width: 25px;
    height: 3px;
    background: var(--text-primary);
    border-radius: 3px;
    transition: var(--transition);
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 32px;
}

.nav-profile {
    display: flex;
    align-items: center;
    margin-left: 15px;
}

.nav-profile-picture {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    object-fit: cover;
    border: 2px solid var(--accent-primary);
    cursor: pointer;
    transition: var(--transition);
}

.nav-profile-picture:hover {
    transform: scale(1.1);
    box-shadow: 0 0 10px rgba(99, 102, 241, 0.5);
}

.nav-profile-placeholder {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--accent-gradient);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 600;
    font-size: 0.9rem;
    border: 2px solid var(--accent-primary);
    cursor: pointer;
    transition: var(--transition);
}

.nav-profile-placeholder:hover {
    transform: scale(1.1);
    box-shadow: 0 0 10px rgba(99, 102, 241, 0.5);
}

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

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

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

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

.theme-toggle {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 50%;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition);
}

.theme-toggle:hover {
    transform: rotate(180deg);
    box-shadow: 0 4px 12px var(--shadow);
}

.sun-icon,
.moon-icon {
    width: 20px;
    height: 20px;
    color: var(--accent-primary);
}

body.dark-mode .sun-icon {
    display: none;
}

body:not(.dark-mode) .moon-icon {
    display: none;
}

/* Hero Section */
.hero {
    padding: 100px 0;
    text-align: center;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 20px;
    background: rgba(167, 139, 250, 0.1);
    border: 1px solid rgba(167, 139, 250, 0.3);
    border-radius: 50px;
    margin-bottom: 30px;
    font-size: 0.9rem;
    font-weight: 500;
}

.sparkle-icon {
    width: 16px;
    height: 16px;
    color: var(--accent-primary);
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 24px;
}

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

.hero-description {
    font-size: 1.25rem;
    color: var(--text-secondary);
    max-width: 700px;
    margin: 0 auto 40px;
    line-height: 1.8;
}

.hero-buttons {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 50px;
}

.btn {
    padding: 14px 32px;
    border-radius: 12px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    border: none;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.btn-primary {
    background: var(--accent-gradient);
    color: white;
    box-shadow: 0 4px 15px var(--shadow);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px var(--shadow);
}

.btn-secondary {
    background: var(--card-bg);
    color: var(--text-primary);
    border: 2px solid var(--border-color);
}

.btn-secondary:hover {
    border-color: var(--accent-primary);
    color: var(--accent-primary);
}

.btn-large {
    padding: 18px 40px;
    font-size: 1.1rem;
}

.btn-icon {
    width: 20px;
    height: 20px;
}

.year-groups {
    display: flex;
    gap: 12px;
    justify-content: center;
    flex-wrap: wrap;
}

.year-badge {
    padding: 8px 20px;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 25px;
    font-size: 0.9rem;
    font-weight: 500;
}

/* Sections */
.features,
.subjects,
.stats,
.cta {
    padding: 80px 0;
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 16px;
}

.section-description {
    font-size: 1.1rem;
    color: var(--text-secondary);
}

/* Features Grid */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
}

.feature-card {
    background: var(--card-bg);
    backdrop-filter: blur(10px);
    padding: 40px 30px;
    border-radius: 20px;
    border: 1px solid var(--border-color);
    transition: var(--transition);
    text-align: center;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px var(--shadow);
    border-color: var(--accent-primary);
}

.feature-icon {
    width: 60px;
    height: 60px;
    margin: 0 auto 20px;
    padding: 15px;
    background: var(--accent-gradient);
    border-radius: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.feature-icon svg {
    width: 100%;
    height: 100%;
    color: white;
}

.feature-title {
    font-size: 1.4rem;
    font-weight: 600;
    margin-bottom: 12px;
}

.feature-description {
    color: var(--text-secondary);
    line-height: 1.7;
}

/* Subjects Grid */
.subjects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
}

.subject-card {
    background: var(--card-bg);
    backdrop-filter: blur(10px);
    padding: 30px;
    border-radius: 15px;
    border: 1px solid var(--border-color);
    text-align: center;
    font-size: 1.2rem;
    font-weight: 600;
    transition: var(--transition);
    cursor: pointer;
}

.subject-card:hover {
    transform: scale(1.05);
    box-shadow: 0 8px 25px var(--shadow);
    border-color: var(--accent-primary);
}

/* Stats Section */
.stats {
    background: var(--card-bg);
    backdrop-filter: blur(10px);
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 40px;
    text-align: center;
}

.stat-number {
    font-size: 3rem;
    font-weight: 800;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 8px;
}

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

/* CTA Section */
.cta {
    text-align: center;
}

.cta-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 16px;
}

.cta-description {
    font-size: 1.2rem;
    color: var(--text-secondary);
    margin-bottom: 40px;
}

.cta-buttons {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}

/* Footer */
.footer {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    padding: 60px 0 30px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--accent-primary);
}

.footer-text {
    color: var(--text-secondary);
    line-height: 1.7;
}

.footer-heading {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 16px;
}

.footer-section {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.footer-link {
    color: var(--text-secondary);
    text-decoration: none;
    transition: var(--transition);
}

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

.footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid var(--border-color);
    color: var(--text-secondary);
}

/* Responsive Design */
@media (max-width: 768px) {
    .mobile-menu-btn {
        display: flex;
    }

    .nav-menu {
        position: absolute;
        top: 70px;
        left: 0;
        right: 0;
        background: var(--nav-bg);
        flex-direction: column;
        padding: 20px;
        border-bottom: 1px solid var(--border-color);
        display: none;
    }

    .nav-menu.active {
        display: flex;
    }

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

    .hero-description {
        font-size: 1.1rem;
    }

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

    .features-grid,
    .subjects-grid {
        grid-template-columns: 1fr;
    }

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

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

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

@media (max-width: 480px) {
    .hero {
        padding: 60px 0;
    }

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

    .stat-number {
        font-size: 2.5rem;
    }

    .stats-grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }
}

a{
    text-decoration: none;
    color: inherit;
}