/* ===== CSS Variables ===== */
:root {
    /* Colors - Light Mode */
    --primary-color: #6366f1;
    --primary-dark: #4f46e5;
    --primary-light: #818cf8;
    --secondary-color: #ec4899;
    --accent-color: #f59e0b;

    --bg-primary: #ffffff;
    --bg-secondary: #f8fafc;
    --bg-tertiary: #f1f5f9;
    --bg-card: #ffffff;

    --text-primary: #0f172a;
    --text-secondary: #475569;
    --text-tertiary: #94a3b8;

    --border-color: #e2e8f0;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);

    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-secondary: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --gradient-accent: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    --gradient-warm: linear-gradient(135deg, #fa709a 0%, #fee140 100%);

    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;

    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-display: 'Outfit', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

    /* Transitions */
    --transition-fast: 150ms ease-in-out;
    --transition-base: 250ms ease-in-out;
    --transition-slow: 350ms ease-in-out;

    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;
    --radius-full: 9999px;
}

/* Dark Mode Variables */
[data-theme="dark"] {
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --bg-tertiary: #334155;
    --bg-card: #1e293b;

    --text-primary: #f1f5f9;
    --text-secondary: #cbd5e1;
    --text-tertiary: #64748b;

    --border-color: #334155;
    --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);
}

/* ===== Reset & Base Styles ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-primary);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    transition: background-color var(--transition-base), color var(--transition-base);
}

.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

/* ===== Navigation ===== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
    transition: all var(--transition-base);
}

[data-theme="dark"] .navbar {
    background: rgba(15, 23, 42, 0.8);
}

.navbar.scrolled {
    box-shadow: var(--shadow-md);
}

.nav-container {
    max-width: 1280px;
    margin: 0 auto;
    padding: var(--spacing-md) var(--spacing-lg);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    cursor: pointer;
}

.logo-icon {
    font-size: 1.75rem;
}

.brand-logo {
    width: 40px;
    height: 40px;
    object-fit: contain;
    border-radius: 10px;
    flex-shrink: 0;
}



.nav-menu {
    display: flex;
    list-style: none;
    gap: var(--spacing-xl);
}

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

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

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

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

.nav-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

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

.hamburger span {
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    transition: all var(--transition-base);
}

/* ===== Buttons ===== */
.btn-primary,
.btn-secondary,
.btn-outline,
.btn-large,
.btn-text {
    font-family: var(--font-primary);
    font-weight: 600;
    border: none;
    cursor: pointer;
    transition: all var(--transition-base);
    border-radius: var(--radius-lg);
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

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

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

.btn-secondary {
    background: var(--bg-tertiary);
    color: var(--text-primary);
    padding: var(--spacing-sm) var(--spacing-md);
}

.btn-secondary:hover {
    background: var(--bg-secondary);
}

.btn-outline {
    background: transparent;
    color: var(--text-primary);
    border: 2px solid var(--border-color);
    padding: var(--spacing-sm) var(--spacing-lg);
}

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

.btn-large {
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: 1.125rem;
}

.btn-text {
    background: transparent;
    color: var(--primary-color);
    padding: var(--spacing-sm);
    font-weight: 600;
}

.btn-text:hover {
    color: var(--primary-dark);
}

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

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: -1;
}

.gradient-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.3;
    animation: float 20s infinite ease-in-out;
}

.orb-1 {
    width: 500px;
    height: 500px;
    background: var(--gradient-primary);
    top: -200px;
    right: -100px;
}

.orb-2 {
    width: 400px;
    height: 400px;
    background: var(--gradient-secondary);
    bottom: -150px;
    left: -100px;
    animation-delay: -5s;
}

.orb-3 {
    width: 350px;
    height: 350px;
    background: var(--gradient-accent);
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    animation-delay: -10s;
}

@keyframes float {

    0%,
    100% {
        transform: translate(0, 0) scale(1);
    }

    33% {
        transform: translate(30px, -30px) scale(1.1);
    }

    66% {
        transform: translate(-20px, 20px) scale(0.9);
    }
}

.hero-content {
    max-width: 900px;
    margin: 0 auto;
    text-align: center;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--radius-full);
    margin-bottom: var(--spacing-xl);
    box-shadow: var(--shadow-sm);
    animation: slideDown 0.6s ease-out;
}

.badge-icon {
    font-size: 1.25rem;
}

.hero-title {
    font-family: var(--font-display);
    font-size: clamp(2.5rem, 6vw, 4.5rem);
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: var(--spacing-lg);
    animation: slideUp 0.8s ease-out;
}

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

.hero-description {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-2xl);
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
    animation: slideUp 1s ease-out;
}

.hero-actions {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: var(--spacing-3xl);
    animation: slideUp 1.2s ease-out;
}

.hero-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: var(--spacing-xl);
    max-width: 600px;
    margin: 0 auto;
    animation: fadeIn 1.4s ease-out;
}

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

.stat-number {
    font-family: var(--font-display);
    font-size: 2.5rem;
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    color: var(--text-secondary);
    font-size: 0.875rem;
    margin-top: var(--spacing-xs);
}

/* ===== Latest Premium Courses Section ===== */
.latest-courses {
    padding: var(--spacing-3xl) 0;
    background: var(--bg-secondary);
    position: relative;
    overflow: hidden;
}

.latest-courses::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: radial-gradient(var(--border-color) 1px, transparent 1px);
    background-size: 30px 30px;
    opacity: 0.3;
    pointer-events: none;
}

.latest-courses::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 200px;
    background: linear-gradient(180deg, var(--bg-primary) 0%, transparent 100%);
    pointer-events: none;
}

.latest-courses .section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto var(--spacing-3xl);
    position: relative;
    z-index: 1;
}

.latest-courses .section-title {
    font-family: var(--font-display);
    font-size: clamp(2.5rem, 5vw, 3.5rem);
    font-weight: 800;
    margin-bottom: var(--spacing-md);
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.latest-courses .section-description {
    font-size: 1.25rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.course-showcase {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-xl);
    margin-top: var(--spacing-2xl);
    position: relative;
    z-index: 1;
}

.advanced-course-card {
    position: relative;
    background: var(--bg-card);
    border-radius: var(--radius-2xl);
    overflow: hidden;
    box-shadow: var(--shadow-xl);
    border: 1px solid var(--border-color);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    cursor: pointer;
}

.advanced-course-card::after {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: inherit;
    padding: 2px;
    background: var(--gradient-primary);
    -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor;
    mask-composite: exclude;
    mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    mask-composite: exclude;
    opacity: 0;
    transition: opacity var(--transition-base);
    pointer-events: none;
}

.advanced-course-card:hover {
    transform: translateY(-12px) scale(1.02);
    box-shadow: 0 30px 60px -12px rgba(0, 0, 0, 0.25);
    border-color: transparent;
}

.advanced-course-card:hover::after {
    opacity: 1;
}

.advanced-course-card:nth-child(3n+1) {
    --card-gradient: var(--gradient-primary);
}

.advanced-course-card:nth-child(3n+2) {
    --card-gradient: var(--gradient-secondary);
}

.advanced-course-card:nth-child(3n+3) {
    --card-gradient: var(--gradient-accent);
}

.course-thumbnail {
    position: relative;
    height: 240px;
    overflow: hidden;
    background: var(--card-gradient, var(--gradient-primary));
}

.course-thumbnail img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0.8;
    transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.advanced-course-card:hover .course-thumbnail img {
    transform: scale(1.1);
}

.course-thumbnail .course-badge {
    position: absolute;
    top: var(--spacing-lg);
    right: var(--spacing-lg);
    padding: var(--spacing-xs) var(--spacing-lg);
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 1px;
    z-index: 2;
    box-shadow: var(--shadow-lg);
}

.course-thumbnail .course-badge.new {
    background: rgba(16, 185, 129, 0.9);
    backdrop-filter: blur(8px);
    color: white;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.course-thumbnail .course-badge.trending {
    background: rgba(245, 158, 11, 0.9);
    backdrop-filter: blur(8px);
    color: white;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.course-thumbnail .play-button {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) scale(0.8);
    width: 70px;
    height: 70px;
    background: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(12px);
    border: 1px solid rgba(255, 255, 255, 0.4);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    color: white;
    z-index: 2;
    cursor: pointer;
    opacity: 0;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.course-thumbnail .play-button::before {
    content: '▶';
    margin-left: 4px;
}

.advanced-course-card:hover .play-button {
    opacity: 1;
    transform: translate(-50%, -50%) scale(1);
}

.course-thumbnail .play-button:hover {
    background: white;
    color: var(--primary-color);
    transform: translate(-50%, -50%) scale(1.1);
}

.course-details {
    padding: var(--spacing-xl);
}

.course-details .course-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
}

.course-details .course-icon {
    font-size: 1.5rem;
}

.course-details .course-level {
    font-size: 0.75rem;
    color: var(--text-tertiary);
    text-transform: uppercase;
    letter-spacing: 1px;
    font-weight: 600;
}

.course-details .course-title {
    font-family: var(--font-display);
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    line-height: 1.3;
    color: var(--text-primary);
}

.course-details .course-instructor {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
}

.course-details .instructor-avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: var(--gradient-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 600;
    font-size: 0.875rem;
}

.course-details .instructor-name {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.course-details .course-description {
    font-size: 0.875rem;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: var(--spacing-lg);
}

.course-details .course-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-md);
    padding: var(--spacing-md) 0;
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
    margin-bottom: var(--spacing-lg);
}

.course-details .stat {
    text-align: center;
}

.course-details .stat-value {
    display: block;
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: var(--spacing-xs);
}

.course-details .stat-label {
    font-size: 0.75rem;
    color: var(--text-tertiary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.course-details .course-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
}

.course-details .tag {
    padding: var(--spacing-xs) var(--spacing-md);
    background: var(--bg-tertiary);
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    color: var(--text-secondary);
    font-weight: 500;
    transition: all var(--transition-fast);
}

.course-details .tag:hover {
    background: var(--primary-color);
    color: white;
    transform: translateY(-2px);
}

.course-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.course-footer .course-price .price-label {
    font-size: 0.75rem;
    color: var(--text-tertiary);
    display: block;
}

.course-footer .course-price .price-value {
    font-size: 1.5rem;
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.course-footer .enroll-btn {
    padding: var(--spacing-sm) var(--spacing-lg);
    background: var(--gradient-primary);
    color: white;
    border: none;
    border-radius: var(--radius-lg);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-base);
    box-shadow: var(--shadow-md);
    text-decoration: none;
}

.course-footer .enroll-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

/* ===== Courses Section ===== */
.course-filters {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: var(--spacing-2xl);
}

.filter-btn {
    background: var(--bg-card);
    border: 2px solid var(--border-color);
    color: var(--text-secondary);
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--radius-full);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-base);
}

.filter-btn:hover,
.filter-btn.active {
    background: var(--gradient-primary);
    border-color: transparent;
    color: white;
    transform: translateY(-2px);
}

.courses-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: var(--spacing-xl);
}

.course-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    overflow: hidden;
    transition: all var(--transition-base);
    cursor: pointer;
}

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

.course-image {
    width: 100%;
    height: 200px;
    object-fit: cover;
    background: var(--gradient-primary);
}

.course-content {
    padding: var(--spacing-lg);
}

.course-category {
    display: inline-block;
    background: var(--bg-tertiary);
    color: var(--primary-color);
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

.course-title {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
}

.course-description {
    color: var(--text-secondary);
    font-size: 0.875rem;
    margin-bottom: var(--spacing-md);
}

.course-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--border-color);
}

.course-students,
.course-duration {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: 0.875rem;
    color: var(--text-tertiary);
}

/* ===== Features Section ===== */
.features {
    background: var(--bg-secondary);
}

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

.feature-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: var(--spacing-2xl);
    text-align: center;
    transition: all var(--transition-base);
}

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

.feature-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-lg);
    display: inline-block;
    animation: bounce 2s infinite;
}

.feature-card:hover .feature-icon {
    animation: none;
    transform: scale(1.1);
}

.feature-title {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
}

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

/* ===== Progress Dashboard ===== */
.dashboard-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-xl);
}

.dashboard-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-md);
}

.card-title {
    font-size: 1.125rem;
    font-weight: 700;
    margin-bottom: var(--spacing-lg);
}

.activity-chart {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: var(--spacing-sm);
    height: 200px;
    padding: var(--spacing-md) 0;
}

.chart-bar {
    flex: 1;
    background: var(--gradient-primary);
    border-radius: var(--radius-sm);
    position: relative;
    cursor: pointer;
    transition: all var(--transition-base);
    min-height: 20px;
}

.chart-bar:hover {
    opacity: 0.8;
    transform: scaleY(1.05);
}

.chart-bar::before {
    content: attr(data-day);
    position: absolute;
    bottom: -24px;
    left: 50%;
    transform: translateX(-50%);
    font-size: 0.75rem;
    color: var(--text-tertiary);
}

.streak-display {
    text-align: center;
    padding: var(--spacing-2xl) 0;
}

.streak-number {
    font-size: 4rem;
    font-weight: 800;
    background: var(--gradient-warm);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.streak-label {
    font-size: 1.125rem;
    color: var(--text-secondary);
    margin-top: var(--spacing-md);
}

.skills-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.skill-item {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.skill-info {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.skill-name {
    font-weight: 600;
}

.skill-percentage {
    color: var(--primary-color);
    font-weight: 700;
}

.skill-bar {
    height: 8px;
    background: var(--bg-tertiary);
    border-radius: var(--radius-full);
    overflow: hidden;
}

.skill-progress {
    height: 100%;
    background: var(--gradient-primary);
    border-radius: var(--radius-full);
    transition: width 1s ease-out;
}

/* ===== Resources Section ===== */
.resources {
    background: var(--bg-secondary);
}

.learning-paths,
.student-faq {
    padding: var(--spacing-3xl) 0;
}

.learning-paths {
    background: var(--bg-primary);
}

.student-faq {
    background: var(--bg-secondary);
}

.resources-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-xl);
}

.resource-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: var(--spacing-2xl);
    text-align: center;
    transition: all var(--transition-base);
}

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

.resource-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-lg);
}

.resource-title {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
}

.resource-description {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
}

/* ===== Footer ===== */
.footer {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    padding: var(--spacing-3xl) 0 var(--spacing-xl);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-2xl);
    margin-bottom: var(--spacing-2xl);
}

.footer-title {
    font-weight: 700;
    margin-bottom: var(--spacing-md);
}

.footer-description {
    color: var(--text-secondary);
    margin-top: var(--spacing-sm);
}

.footer-links {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

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

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

.newsletter-form {
    display: flex;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-md);
}

.newsletter-input {
    flex: 1;
    padding: var(--spacing-sm) var(--spacing-md);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    background: var(--bg-card);
    color: var(--text-primary);
    font-family: var(--font-primary);
}

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

/* ===== Animations ===== */
@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }

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

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

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

@keyframes fadeIn {
    from {
        opacity: 0;
    }

    to {
        opacity: 1;
    }
}

@keyframes bounce {

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

    50% {
        transform: translateY(-10px);
    }
}

/* ===== Responsive Design ===== */
@media (max-width: 1024px) {
    .nav-container {
        padding: 0.8rem 1rem;
        gap: 0.6rem;
    }

    .logo {
        font-size: 1.2rem;
    }

    .nav-menu {
        gap: 0.75rem;
    }

    .nav-link {
        font-size: 0.93rem;
    }

    .nav-actions {
        gap: 0.45rem;
    }

    .nav-actions .btn-primary,
    .nav-actions .btn-secondary {
        padding: 0.45rem 0.7rem;
        font-size: 0.85rem;
    }

    .hero {
        min-height: auto;
        padding-top: 110px;
        padding-bottom: 60px;
    }

    .hero-content {
        max-width: 760px;
    }

    .hero-description {
        font-size: 1.1rem;
        max-width: 640px;
    }

    .hero-stats {
        max-width: 680px;
        grid-template-columns: repeat(3, minmax(120px, 1fr));
        gap: 1rem;
    }

    .orb-1 {
        width: 360px;
        height: 360px;
        top: -140px;
        right: -80px;
    }

    .orb-2 {
        width: 320px;
        height: 320px;
        bottom: -120px;
        left: -80px;
    }

    .orb-3 {
        width: 260px;
        height: 260px;
    }
}

@media (max-width: 768px) {
    .nav-container {
        min-height: 68px;
    }

    .nav-menu {
        position: fixed;
        top: 68px;
        left: -100%;
        flex-direction: column;
        background: var(--bg-card);
        width: 100%;
        max-height: calc(100vh - 68px);
        overflow-y: auto;
        padding: var(--spacing-xl);
        box-shadow: var(--shadow-lg);
        transition: left var(--transition-base);
        border-top: 1px solid var(--border-color);
        z-index: 1001;
    }

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

    .nav-link {
        display: block;
        width: 100%;
        padding: 0.2rem 0;
        font-size: 1rem;
    }

    .nav-actions {
        margin-left: auto;
    }

    .nav-actions .btn-primary {
        display: none;
    }

    .nav-actions .btn-secondary {
        min-width: 42px;
        min-height: 38px;
        padding: 0.35rem 0.55rem;
    }

    .hamburger {
        display: flex;
        padding: 0.3rem;
    }

    .hero-actions {
        flex-direction: column;
        margin-bottom: 2rem;
    }

    .btn-large {
        width: 100%;
    }

    .hero {
        min-height: auto;
        padding-top: 96px;
        padding-bottom: 44px;
    }

    .hero-content {
        max-width: 100%;
    }

    .hero-badge {
        width: 100%;
        justify-content: center;
        padding: 0.55rem 0.8rem;
        font-size: 0.88rem;
        border-radius: 0.8rem;
    }

    .hero-title {
        font-size: clamp(1.9rem, 8vw, 2.7rem);
        line-height: 1.2;
        margin-bottom: 0.85rem;
    }

    .hero-description {
        font-size: 0.98rem;
        margin-bottom: 1.4rem;
    }

    .hero-stats {
        grid-template-columns: 1fr;
        gap: 0.9rem;
        max-width: 300px;
    }

    .stat-item {
        background: var(--bg-card);
        border: 1px solid var(--border-color);
        border-radius: 0.75rem;
        padding: 0.7rem 0.65rem;
    }

    .stat-number {
        font-size: 1.9rem;
    }

    .gradient-orb {
        filter: blur(56px);
        opacity: 0.22;
    }

    .orb-1 {
        width: 240px;
        height: 240px;
        top: -95px;
        right: -80px;
    }

    .orb-2 {
        width: 210px;
        height: 210px;
        bottom: -80px;
        left: -70px;
    }

    .orb-3 {
        display: none;
    }

    .courses-grid,
    .features-grid,
    .dashboard-grid,
    .resources-grid {
        grid-template-columns: 1fr;
    }

    .footer {
        padding-top: 2.25rem;
    }

    .footer-content {
        grid-template-columns: 1fr;
        gap: 1.15rem;
        margin-bottom: 1.4rem;
    }

    .footer-section {
        text-align: left;
    }

    .footer-section .btn-primary {
        width: 100%;
    }

    .newsletter-form {
        flex-direction: column;
    }

    .newsletter-form .btn-primary {
        width: 100%;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 0.9rem;
    }

    .nav-container {
        padding: 0.7rem 0.9rem;
    }

    .logo {
        font-size: 1rem;
    }

    .logo-text {
    display: inline-block;
    max-width: 220px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}


    .hero-title {
        font-size: 1.72rem;
        line-height: 1.22;
    }

    .hero-description {
        font-size: 0.92rem;
    }

    .hero-badge {
        font-size: 0.8rem;
        padding: 0.45rem 0.65rem;
    }

    .stat-number {
        font-size: 1.7rem;
    }

    .hero {
        padding-top: 90px;
        padding-bottom: 34px;
    }
}