/*
 * Homepage Courses - Visual Identity
 * Adheres to the standards defined in GEMINI.md
 */

/* --- Root Variables & Global Styles --- */
:root {
    --primary-color: #667eea;
    --secondary-color: #764ba2;
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --error-color: #ef4444;
    --info-color: #3b82f6;
    --dark-color: #1f2937;
    --light-color: #f8fafc;
    --border-color: #e5e7eb;
    --shadow-sm: 0 1px 3px 0 rgb(0 0 0 / 0.1), 0 1px 2px -1px rgb(0 0 0 / 0.1);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
    --border-radius: 12px;
    --animation-duration: 0.3s;
}

* {
    box-sizing: border-box;
}

body {
    font-family: 'Inter', 'Tajawal', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background-color: #f8fafc; /* Light background for the main page */
    direction: rtl;
    text-align: right;
}

.courses-homepage-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 2rem 1rem;
    position: relative;
}

/* --- Animated Background --- */
.animated-background {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    overflow: hidden;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
}

.floating-shapes .shape {
    position: absolute;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    animation: float 12s ease-in-out infinite;
}

/* Shape definitions are the same as page-my-courses.php */

/* --- Hero Section --- */
.hero-section {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 6rem 2rem;
    border-radius: 24px;
    margin-bottom: 3rem;
    position: relative;
    overflow: hidden;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    box-shadow: var(--shadow-xl);
    min-height: 600px;
    gap: 4rem;
}

.hero-pattern {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(45deg, 
        rgba(102, 126, 234, 0.1) 25%, 
        transparent 25%, 
        transparent 50%, 
        rgba(102, 126, 234, 0.1) 50%, 
        rgba(102, 126, 234, 0.1) 75%, 
        transparent 75%);
    background-size: 60px 60px;
    animation: patternMove 20s linear infinite;
    z-index: 0;
}

@keyframes patternMove {
    0% { transform: translateX(0) translateY(0); }
    100% { transform: translateX(60px) translateY(60px); }
}

.hero-content {
    flex: 1;
    text-align: right;
    z-index: 1;
    position: relative;
}

.hero-image {
    flex: 1;
    text-align: center;
    z-index: 1;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1rem;
    min-height: 350px;
}

.hero-illustration {
    max-width: 100%;
    height: auto;
    max-height: 400px;
    filter: drop-shadow(0 20px 40px rgba(102, 126, 234, 0.3));
    animation: float 6s ease-in-out infinite;
    display: block;
    object-fit: contain;
    background-color: transparent;
    margin: 0 auto;
}

@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-20px); }
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: linear-gradient(135deg, var(--success-color), #059669);
    color: white;
    padding: 0.75rem 1.5rem;
    border-radius: 50px;
    font-size: 0.9rem;
    font-weight: 600;
    margin-top: 2rem;
    box-shadow: var(--shadow-md);
    animation: pulse 2s infinite;
}

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

.hero-title {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 800;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 1rem;
}

.hero-description {
    font-size: 1.25rem;
    color: #6b7280;
    margin-bottom: 2rem;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.hero-buttons .btn {
    margin: 0 0.5rem;
}

/* --- General Section Styling --- */
.section-header {
    text-align: center;
    margin-bottom: 3rem;
}

.section-subtitle {
    display: inline-block;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    font-size: 1rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-bottom: 1rem;
    position: relative;
}

.section-subtitle::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 50%;
    transform: translateX(-50%);
    width: 50px;
    height: 3px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 2px;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--dark-color);
    margin-bottom: 1rem;
}

.section-description {
    font-size: 1.1rem;
    color: #6b7280;
    max-width: 800px;
    margin: 0 auto;
}

/* --- Features Section --- */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.feature-card {
    background: white;
    padding: 2.5rem 2rem;
    border-radius: var(--border-radius);
    text-align: right;
    box-shadow: var(--shadow-md);
    transition: all var(--animation-duration) ease;
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.4), transparent);
    transition: left 0.5s ease;
}

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

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

.feature-icon {
    font-size: 3rem;
    color: var(--primary-color);
    margin-bottom: 1.5rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.1), rgba(118, 75, 162, 0.1));
    border-radius: 50%;
    transition: all var(--animation-duration) ease;
}

.feature-card:hover .feature-icon {
    transform: scale(1.1) rotate(5deg);
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.2), rgba(118, 75, 162, 0.2));
}

.feature-link {
    margin-top: 1.5rem;
}

.feature-link a {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
    font-size: 0.9rem;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    transition: all var(--animation-duration) ease;
}

.feature-link a:hover {
    color: var(--secondary-color);
    transform: translateX(5px);
}

.feature-card h3 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--dark-color);
    margin-bottom: 0.5rem;
}

.feature-card p {
    color: #6b7280;
    line-height: 1.6;
}

/* --- Stats Section --- */
.stats-section {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    padding: 4rem 2rem;
    border-radius: 20px;
    margin: 4rem 0;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    text-align: center;
}

.stat-item {
    position: relative;
    padding: 1rem 0;
}

.stat-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    opacity: 0.9;
    display: block;
}

.stat-progress {
    width: 100%;
    height: 4px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 2px;
    margin-top: 1rem;
    overflow: hidden;
}

.stat-progress-bar {
    height: 100%;
    background: rgba(255, 255, 255, 0.8);
    border-radius: 2px;
    transition: width 2s ease;
    animation: progressFill 2s ease forwards;
}

@keyframes progressFill {
    0% { width: 0%; }
}

.stat-item .stat-number {
    font-size: 3rem;
    font-weight: 800;
    line-height: 1;
}

.stat-item .stat-title {
    font-size: 1rem;
    font-weight: 500;
    opacity: 0.9;
    text-transform: uppercase;
}

/* --- Courses Section --- */
.filter-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 3rem;
    gap: 2rem;
    flex-wrap: wrap;
}

.filter-wrapper {
    flex: 1;
}

.filter-tabs {
    display: flex;
    justify-content: center;
    gap: 1rem;
    flex-wrap: wrap;
}

.courses-search {
    display: flex;
    background: white;
    border-radius: 50px;
    box-shadow: var(--shadow-md);
    overflow: hidden;
    min-width: 300px;
}

.courses-search input {
    flex: 1;
    padding: 0.75rem 1.5rem;
    border: none;
    background: transparent;
    font-size: 1rem;
    outline: none;
    color: var(--dark-color);
    text-align: right;
}

.courses-search input::placeholder {
    color: #9ca3af;
}

.courses-search button {
    padding: 0.75rem 1.5rem;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    border: none;
    cursor: pointer;
    transition: all var(--animation-duration) ease;
}

.courses-search button:hover {
    background: linear-gradient(135deg, var(--secondary-color), var(--primary-color));
}

.filter-tab {
    background: white;
    color: var(--dark-color);
    border: 1px solid var(--border-color);
    padding: 0.75rem 1.5rem;
    border-radius: 50px;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--animation-duration) ease;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.9rem;
}

.filter-tab:hover {
    background: var(--light-color);
    border-color: #d1d5db;
}

.filter-tab.active {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
    box-shadow: var(--shadow-md);
}

.courses-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
}

.course-card {
    background: white;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    transition: all var(--animation-duration) ease;
    display: flex;
    flex-direction: column;
    position: relative;
    border: 1px solid transparent;
}

.course-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-xl);
    border-color: rgba(102, 126, 234, 0.2);
}

.course-card-badge {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background: var(--error-color);
    color: white;
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
    z-index: 2;
    text-transform: uppercase;
}

.course-card-badge.intermediate {
    background: var(--warning-color);
}

.course-card-badge.beginner {
    background: var(--success-color);
}

.course-card-thumbnail {
    position: relative;
    overflow: hidden;
}

.course-card-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.7);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: all var(--animation-duration) ease;
}

.course-card-thumbnail:hover .course-card-overlay {
    opacity: 1;
}

.course-card-preview {
    background: white;
    color: var(--dark-color);
    padding: 0.75rem 1.5rem;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    transform: translateY(20px);
    transition: all var(--animation-duration) ease;
}

.course-card-thumbnail:hover .course-card-preview {
    transform: translateY(0);
}

.course-card-thumbnail img {
    width: 100%;
    height: 160px;
    object-fit: cover;
}

.course-card-content {
    padding: 1rem;
    display: flex;
    flex-direction: column;
    flex-grow: 1;
}

.course-card-header h3 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--dark-color);
    margin-bottom: 0.5rem;
    text-align: right;
}

.course-card-header h3 a {
    color: inherit;
    text-decoration: none;
}

.course-card-header h3 a:hover {
    color: var(--primary-color);
}

.course-card-description {
    color: #6b7280;
    font-size: 0.9rem;
    line-height: 1.5;
    margin-bottom: 1rem;
    flex-grow: 1;
    text-align: right;
}

.course-card-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.875rem;
    color: #6b7280;
    font-weight: 500;
    margin-bottom: 1rem;
}

.course-card-meta span {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
}

.course-rating {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    font-size: 0.875rem;
    color: #fbbf24;
}

.course-rating span {
    color: #6b7280;
    font-weight: 600;
    margin-left: 0.5rem;
}

.course-card-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 1rem;
    margin-top: auto;
    border-top: 1px solid var(--border-color);
}

.course-card-footer .btn {
    padding: 0.5rem 1.25rem;
    font-size: 0.875rem;
}

/* --- Buttons --- */
.btn {
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 50px;
    font-size: 0.875rem;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    transition: all var(--animation-duration) ease;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

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

.btn-primary { background: linear-gradient(135deg, var(--primary-color), var(--secondary-color)); color: white; }
.btn-primary:hover { color: white; text-decoration: none; }

.btn-secondary { background: white; color: var(--dark-color); border: 1px solid var(--border-color); }
.btn-secondary:hover { background: var(--light-color); color: var(--dark-color); text-decoration: none; }

/* --- Responsive --- */
@media (max-width: 768px) {
    .courses-grid {
        grid-template-columns: 1fr;
    }
    .hero-title {
        font-size: 2.5rem;
    }
    .section-title {
        font-size: 2rem;
    }
}