/* ملف style.css - أنماط موقع Arabic Nest المحدثة */

/* ====== CSS Variables ====== */
:root {
    /* الألوان الرئيسية */
    --primary-color: #1a5e63;
    --primary-light: #2a7f84;
    --primary-dark: #14565a;
    --secondary-color: #f8c15a;
    --secondary-light: #ffd180;
    --secondary-dark: #e6ac3a;
    --accent-color: #e56b6f;
    --accent-light: #ff8a65;
    
    /* الألوان الحيادية */
    --light-color: #f8f9fa;
    --white: #ffffff;
    --dark-color: #2c3e50;
    --text-color: #444;
    --text-light: #6c757d;
    --text-muted: #999;
    --border-color: #e9ecef;
    
    /* تدرجات لونية */
    --gradient-primary: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-light) 100%);
    --gradient-secondary: linear-gradient(135deg, var(--secondary-color) 0%, var(--secondary-light) 100%);
    --gradient-accent: linear-gradient(135deg, var(--accent-color) 0%, var(--accent-light) 100%);
    
    /* الظلال والتأثيرات */
    --border-radius-sm: 6px;
    --border-radius: 10px;
    --border-radius-lg: 20px;
    --border-radius-xl: 30px;
    --box-shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.08);
    --box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    --box-shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.15);
    --transition: all 0.3s ease;
    --transition-fast: all 0.2s ease;
    
    /* المسافات */
    --space-xs: 0.5rem;
    --space-sm: 1rem;
    --space-md: 1.5rem;
    --space-lg: 2rem;
    --space-xl: 3rem;
    --space-xxl: 4rem;
    
    /* الخطوط */
    --font-primary: 'Cairo', 'Segoe UI', Tahoma, sans-serif;
    --font-secondary: 'Amiri', Georgia, serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 2rem;
    --font-size-4xl: 2.5rem;
    --line-height-tight: 1.25;
    --line-height-base: 1.6;
    --line-height-relaxed: 1.75;
}

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

*::before,
*::after {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
    line-height: 1.15;
    -webkit-text-size-adjust: 100%;
    -ms-text-size-adjust: 100%;
}

body {
    font-family: var(--font-primary);
    font-size: var(--font-size-base);
    line-height: var(--line-height-base);
    color: var(--text-color);
    background-color: var(--white);
    direction: rtl;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ====== Utility Classes ====== */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-md);
}

.section-padding {
    padding: var(--space-xxl) 0;
}

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

.text-white {
    color: var(--white);
}

.bg-light {
    background-color: var(--light-color);
}

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

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

/* ====== Loading Screen ====== */
.loading-screen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--gradient-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10000;
    transition: opacity 0.5s ease;
}

.loading-content {
    text-align: center;
    color: var(--white);
}

.logo-animation h1 {
    font-size: var(--font-size-4xl);
    font-weight: 800;
    margin-bottom: var(--space-md);
    animation: logoScale 2s ease-in-out infinite alternate;
}

.logo-animation span {
    color: var(--secondary-color);
}

.loading-dots {
    display: flex;
    gap: var(--space-xs);
    justify-content: center;
}

.loading-dots span {
    width: 12px;
    height: 12px;
    background: var(--secondary-color);
    border-radius: 50%;
    animation: loadingDots 1.4s infinite;
}

.loading-dots span:nth-child(2) {
    animation-delay: 0.2s;
}

.loading-dots span:nth-child(3) {
    animation-delay: 0.4s;
}

@keyframes logoScale {
    0% { transform: scale(1); }
    100% { transform: scale(1.05); }
}

@keyframes loadingDots {
    0%, 80%, 100% {
        transform: scale(0.8);
        opacity: 0.5;
    }
    40% {
        transform: scale(1);
        opacity: 1;
    }
}

/* ====== Header & Navigation ====== */
.main-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: var(--box-shadow-sm);
    transition: var(--transition);
}

.main-header.scrolled {
    background: rgba(255, 255, 255, 0.98);
    box-shadow: var(--box-shadow);
}

.navbar {
    padding: var(--space-sm) 0;
}

.nav-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-lg);
}

.logo h1 {
    font-size: var(--font-size-2xl);
    font-weight: 800;
    color: var(--primary-color);
    margin: 0;
}

.logo span {
    color: var(--secondary-color);
}

.tagline {
    font-size: var(--font-size-xs);
    color: var(--text-light);
    margin: 0;
    font-weight: 400;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: var(--space-lg);
    margin: 0;
}

.nav-link {
    text-decoration: none;
    color: var(--text-color);
    font-weight: 600;
    padding: var(--space-xs) var(--space-sm);
    border-radius: var(--border-radius-sm);
    transition: var(--transition);
    position: relative;
}

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

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

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

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

.lang-btn {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    background: none;
    border: 1px solid var(--border-color);
    padding: var(--space-xs) var(--space-sm);
    border-radius: var(--border-radius-sm);
    cursor: pointer;
    transition: var(--transition);
    color: var(--text-color);
    font-size: var(--font-size-sm);
}

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

.auth-buttons {
    display: flex;
    gap: var(--space-sm);
}

.mobile-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    cursor: pointer;
    padding: var(--space-xs);
}

.mobile-toggle span {
    width: 25px;
    height: 3px;
    background: var(--primary-color);
    border-radius: 2px;
    transition: var(--transition);
}

/* ====== Buttons ====== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    padding: var(--space-sm) var(--space-lg);
    border: none;
    border-radius: var(--border-radius);
    font-family: inherit;
    font-size: var(--font-size-base);
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    transition: var(--transition);
    text-align: center;
    white-space: nowrap;
}

.btn-sm {
    padding: var(--space-xs) var(--space-md);
    font-size: var(--font-size-sm);
}

.btn-lg {
    padding: var(--space-md) var(--space-xl);
    font-size: var(--font-size-lg);
    border-radius: var(--border-radius-lg);
}

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

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

.btn-outline {
    background: transparent;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
}

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

.btn-outline-white {
    background: transparent;
    color: var(--white);
    border: 2px solid var(--white);
}

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

/* ====== Hero Section ====== */
.hero {
    position: relative;
    padding: 120px 0 var(--space-xxl);
    background: var(--gradient-primary);
    color: var(--white);
    overflow: hidden;
    min-height: 100vh;
    display: flex;
    align-items: center;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    overflow: hidden;
}

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

.float-element {
    position: absolute;
    font-size: 4rem;
    font-weight: 800;
    color: rgba(255, 255, 255, 0.1);
    animation: float 6s ease-in-out infinite;
    font-family: var(--font-secondary);
}

.float-element:nth-child(1) {
    top: 20%;
    left: 10%;
    animation-delay: 0s;
}

.float-element:nth-child(2) {
    top: 60%;
    left: 20%;
    animation-delay: 1s;
}

.float-element:nth-child(3) {
    top: 30%;
    right: 15%;
    animation-delay: 2s;
}

.float-element:nth-child(4) {
    bottom: 30%;
    right: 20%;
    animation-delay: 3s;
}

.float-element:nth-child(5) {
    bottom: 20%;
    left: 15%;
    animation-delay: 4s;
}

@keyframes float {
    0%, 100% {
        transform: translateY(0px) rotate(0deg);
        opacity: 0.1;
    }
    50% {
        transform: translateY(-20px) rotate(5deg);
        opacity: 0.2;
    }
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-xxl);
    align-items: center;
    position: relative;
    z-index: 2;
}

.hero-title {
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: 800;
    line-height: var(--line-height-tight);
    margin-bottom: var(--space-lg);
}

.hero-description {
    font-size: var(--font-size-lg);
    line-height: var(--line-height-relaxed);
    margin-bottom: var(--space-xl);
    opacity: 0.9;
}

.hero-stats {
    display: flex;
    gap: var(--space-xl);
    margin-bottom: var(--space-xl);
}

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

.stat-number {
    display: block;
    font-size: var(--font-size-3xl);
    font-weight: 800;
    color: var(--secondary-color);
    line-height: 1;
}

.stat-label {
    font-size: var(--font-size-sm);
    opacity: 0.8;
    margin-top: var(--space-xs);
}

.hero-buttons {
    display: flex;
    gap: var(--space-md);
    flex-wrap: wrap;
}

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

.book-stack {
    position: relative;
    transform: perspective(1000px) rotateY(-15deg);
}

.book {
    width: 200px;
    height: 280px;
    border-radius: var(--border-radius);
    position: relative;
    margin-bottom: -40px;
    box-shadow: var(--box-shadow-lg);
    transition: var(--transition);
}

.book-1 {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    z-index: 3;
}

.book-2 {
    background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    transform: translateX(-30px) translateY(20px);
    z-index: 2;
}

.book-3 {
    background: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    transform: translateX(-60px) translateY(40px);
    z-index: 1;
}

.book:hover {
    transform: translateY(-10px);
}

.scroll-indicator {
    position: absolute;
    bottom: var(--space-lg);
    left: 50%;
    transform: translateX(50%);
    animation: bounce 2s infinite;
}

.scroll-arrow {
    width: 40px;
    height: 40px;
    border: 2px solid rgba(255, 255, 255, 0.5);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: rgba(255, 255, 255, 0.7);
    cursor: pointer;
    transition: var(--transition);
}

.scroll-arrow:hover {
    border-color: var(--white);
    color: var(--white);
    background: rgba(255, 255, 255, 0.1);
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateY(0) translateX(50%);
    }
    40% {
        transform: translateY(-10px) translateX(50%);
    }
    60% {
        transform: translateY(-5px) translateX(50%);
    }
}

/* ====== Section Headers ====== */
.section-header {
    text-align: center;
    margin-bottom: var(--space-xxl);
}

.section-title {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: var(--space-md);
    position: relative;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(50%);
    width: 60px;
    height: 4px;
    background: var(--gradient-secondary);
    border-radius: 2px;
}

.text-white .section-title {
    color: var(--white);
}

.text-white .section-title::after {
    background: var(--secondary-color);
}

.section-subtitle {
    font-size: var(--font-size-lg);
    color: var(--text-light);
    max-width: 600px;
    margin: 0 auto;
    line-height: var(--line-height-relaxed);
}

.text-white .section-subtitle {
    color: rgba(255, 255, 255, 0.8);
}

/* ====== Features Section ====== */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--space-xl);
}

.feature-card {
    background: var(--white);
    padding: var(--space-xl);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--box-shadow);
    text-align: center;
    transition: var(--transition);
    border-top: 4px solid transparent;
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient-primary);
    transform: scaleX(0);
    transition: var(--transition);
}

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

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--box-shadow-lg);
}

.feature-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--space-lg);
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: var(--font-size-2xl);
}

.feature-card h3 {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: var(--space-md);
}

.feature-card p {
    color: var(--text-light);
    line-height: var(--line-height-relaxed);
    margin-bottom: var(--space-lg);
}

.feature-link a {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    transition: var(--transition);
}

.feature-link a:hover {
    color: var(--primary-dark);
    gap: var(--space-sm);
}

/* ====== Courses Section ====== */
.courses-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(380px, 1fr));
    gap: var(--space-xl);
}

.course-card {
    background: var(--white);
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    box-shadow: var(--box-shadow);
    transition: var(--transition);
    position: relative;
}

.course-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--box-shadow-lg);
}

.course-card.featured {
    border: 3px solid var(--secondary-color);
}

.featured-badge {
    position: absolute;
    top: 15px;
    right: 15px;
    background: var(--gradient-accent);
    color: var(--white);
    padding: var(--space-xs) var(--space-sm);
    border-radius: var(--border-radius);
    font-size: var(--font-size-xs);
    font-weight: 700;
    z-index: 2;
}

.course-image {
    height: 200px;
    background: var(--gradient-primary);
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
}

.course-level {
    position: absolute;
    top: 15px;
    left: 15px;
    background: rgba(255, 255, 255, 0.9);
    color: var(--primary-color);
    padding: var(--space-xs) var(--space-sm);
    border-radius: var(--border-radius);
    font-size: var(--font-size-xs);
    font-weight: 700;
}

.course-rating {
    position: absolute;
    bottom: 15px;
    right: 15px;
    background: rgba(0, 0, 0, 0.8);
    color: var(--secondary-color);
    padding: var(--space-xs) var(--space-sm);
    border-radius: var(--border-radius);
    font-size: var(--font-size-sm);
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: var(--space-xs);
}

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

.course-content h3 {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: var(--space-sm);
    line-height: var(--line-height-tight);
}

.course-content p {
    color: var(--text-light);
    margin-bottom: var(--space-lg);
    line-height: var(--line-height-relaxed);
}

.course-meta {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-md);
    margin-bottom: var(--space-lg);
    padding: var(--space-md) 0;
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
}

.meta-item {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    font-size: var(--font-size-sm);
    color: var(--text-light);
}

.meta-item i {
    color: var(--primary-color);
}

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

.course-price {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.current-price {
    font-size: var(--font-size-xl);
    font-weight: 800;
    color: var(--primary-color);
}

.old-price {
    font-size: var(--font-size-base);
    color: var(--text-muted);
    text-decoration: line-through;
}

.section-footer {
    text-align: center;
    margin-top: var(--space-xxl);
}

/* ====== Books Section ====== */
.books-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--space-xl);
}

.book-card {
    background: var(--white);
    border-radius: var(--border-radius-lg);
    padding: var(--space-lg);
    box-shadow: var(--box-shadow);
    transition: var(--transition);
    text-align: center;
}

.book-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--box-shadow-lg);
}

.book-cover {
    position: relative;
    width: 160px;
    height: 220px;
    margin: 0 auto var(--space-lg);
    transform-style: preserve-3d;
    transition: var(--transition);
}

.book-cover:hover {
    transform: rotateY(-15deg);
}

.book-spine {
    position: absolute;
    left: -8px;
    top: 0;
    width: 8px;
    height: 100%;
    background: var(--primary-dark);
    border-radius: 2px 0 0 2px;
}

.book-front {
    width: 100%;
    height: 100%;
    background: var(--gradient-primary);
    border-radius: var(--border-radius);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: var(--white);
    padding: var(--space-md);
    box-shadow: var(--box-shadow);
}

.book-front i {
    font-size: var(--font-size-3xl);
    margin-bottom: var(--space-md);
    opacity: 0.9;
}

.book-front h4 {
    font-size: var(--font-size-base);
    font-weight: 700;
    text-align: center;
    line-height: var(--line-height-tight);
}

.book-info h3 {
    font-size: var(--font-size-lg);
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: var(--space-xs);
}

.book-info p {
    color: var(--text-light);
    margin-bottom: var(--space-md);
    font-size: var(--font-size-sm);
}

.book-meta {
    display: flex;
    justify-content: center;
    gap: var(--space-md);
    margin-bottom: var(--space-md);
    font-size: var(--font-size-xs);
    color: var(--text-muted);
}

.book-meta span {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
}

.book-price {
    font-size: var(--font-size-lg);
    font-weight: 800;
    color: var(--accent-color);
}

/* ====== Testimonials Section ====== */
.testimonials {
    position: relative;
    overflow: hidden;
}

.testimonials-slider {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
}

.testimonial-card {
    display: none;
    opacity: 0;
    transform: translateX(30px);
    transition: all 0.5s ease;
}

.testimonial-card.active {
    display: block;
    opacity: 1;
    transform: translateX(0);
}

.testimonial-content {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--border-radius-lg);
    padding: var(--space-xxl);
    text-align: center;
    position: relative;
}

.quote-icon {
    position: absolute;
    top: -20px;
    left: 50%;
    transform: translateX(-50%);
    width: 40px;
    height: 40px;
    background: var(--secondary-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary-color);
    font-size: var(--font-size-lg);
}

.testimonial-content p {
    font-size: var(--font-size-lg);
    line-height: var(--line-height-relaxed);
    margin-bottom: var(--space-xl);
    color: var(--white);
    font-style: italic;
}

.testimonial-author {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-md);
}

.author-avatar {
    width: 60px;
    height: 60px;
    background: var(--secondary-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary-color);
    font-size: var(--font-size-lg);
}

.author-info h4 {
    color: var(--white);
    font-size: var(--font-size-lg);
    font-weight: 700;
    margin-bottom: var(--space-xs);
}

.author-info span {
    color: rgba(255, 255, 255, 0.8);
    font-size: var(--font-size-sm);
}

.testimonials-navigation {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-lg);
    margin-top: var(--space-xl);
}

.testimonials-navigation .nav-btn {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.3);
    color: var(--white);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition);
}

.testimonials-navigation .nav-btn:hover {
    background: var(--secondary-color);
    color: var(--primary-color);
}

.dots-container {
    display: flex;
    gap: var(--space-sm);
}

.dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    cursor: pointer;
    transition: var(--transition);
}

.dot.active {
    background: var(--secondary-color);
}

/* ====== CTA Section ====== */
.cta {
    background: var(--gradient-primary);
    color: var(--white);
    text-align: center;
}

.cta-content h2 {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    font-weight: 800;
    margin-bottom: var(--space-md);
}

.cta-content p {
    font-size: var(--font-size-lg);
    margin-bottom: var(--space-xl);
    opacity: 0.9;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.cta-buttons {
    display: flex;
    gap: var(--space-md);
    justify-content: center;
    flex-wrap: wrap;
}

/* ====== Footer ====== */
.main-footer {
    background: var(--dark-color);
    color: var(--white);
}

.footer-top {
    padding: var(--space-xxl) 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--space-xl);
}

.footer-column h3,
.footer-column h4 {
    color: var(--secondary-color);
    margin-bottom: var(--space-md);
    font-weight: 700;
}

.footer-logo h3 {
    font-size: var(--font-size-2xl);
    margin-bottom: var(--space-xs);
}

.footer-logo p {
    font-size: var(--font-size-sm);
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: var(--space-md);
}

.footer-column p {
    line-height: var(--line-height-relaxed);
    margin-bottom: var(--space-lg);
    color: rgba(255, 255, 255, 0.8);
}

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

.footer-column ul li {
    margin-bottom: var(--space-sm);
}

.footer-column ul li a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    transition: var(--transition);
}

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

.social-links {
    display: flex;
    gap: var(--space-md);
    margin-top: var(--space-lg);
}

.social-link {
    width: 45px;
    height: 45px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    text-decoration: none;
    transition: var(--transition);
}

.social-link:hover {
    background: var(--secondary-color);
    color: var(--primary-color);
    transform: translateY(-3px);
}

.newsletter-form {
    margin-top: var(--space-md);
}

.input-group {
    display: flex;
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--box-shadow-sm);
}

.input-group input {
    flex: 1;
    padding: var(--space-md);
    border: none;
    font-family: inherit;
    font-size: var(--font-size-base);
}

.input-group input:focus {
    outline: none;
}

.input-group .btn {
    border-radius: 0;
    padding: var(--space-md);
}

.download-apps {
    margin-top: var(--space-lg);
}

.download-apps h5 {
    color: var(--secondary-color);
    margin-bottom: var(--space-md);
    font-size: var(--font-size-base);
}

.app-buttons {
    display: flex;
    gap: var(--space-sm);
    flex-direction: column;
}

.app-btn {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    background: rgba(255, 255, 255, 0.1);
    color: var(--white);
    padding: var(--space-sm);
    border-radius: var(--border-radius);
    text-decoration: none;
    transition: var(--transition);
    font-size: var(--font-size-sm);
}

.app-btn:hover {
    background: rgba(255, 255, 255, 0.2);
}

.footer-bottom {
    padding: var(--space-lg) 0;
}

.footer-bottom-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--space-md);
}

.payment-methods {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    font-size: var(--font-size-sm);
    color: rgba(255, 255, 255, 0.7);
}

.payment-icons {
    display: flex;
    gap: var(--space-sm);
}

.payment-icons i {
    font-size: var(--font-size-lg);
    color: var(--secondary-color);
}

/* ====== Scroll to Top Button ====== */
.scroll-to-top {
    position: fixed;
    bottom: 30px;
    left: 30px;
    width: 50px;
    height: 50px;
    background: var(--gradient-primary);
    color: var(--white);
    border: none;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--box-shadow);
    transition: var(--transition);
    opacity: 0;
    transform: translateY(100px);
    z-index: 999;
}

.scroll-to-top.show {
    opacity: 1;
    transform: translateY(0);
}

.scroll-to-top:hover {
    transform: translateY(-5px);
    box-shadow: var(--box-shadow-lg);
}

/* ====== Notifications ====== */
.notification {
    position: fixed;
    top: 100px;
    right: 20px;
    background: var(--gradient-primary);
    color: var(--white);
    padding: var(--space-md) var(--space-lg);
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow-lg);
    transform: translateX(400px);
    transition: var(--transition);
    z-index: 1001;
    max-width: 350px;
}

.notification.show {
    transform: translateX(0);
}

/* ====== Responsive Design ====== */
@media (max-width: 1024px) {
    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .hero-stats {
        justify-content: center;
    }
    
    .features-grid {
        grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    }
    
    .courses-grid {
        grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    }
}

@media (max-width: 768px) {
    :root {
        --space-xs: 0.25rem;
        --space-sm: 0.75rem;
        --space-md: 1rem;
        --space-lg: 1.5rem;
        --space-xl: 2rem;
        --space-xxl: 2.5rem;
    }
    
    .container {
        padding: 0 var(--space-sm);
    }
    
    .nav-menu {
        position: fixed;
        top: 100%;
        left: 0;
        width: 100%;
        background: var(--white);
        flex-direction: column;
        padding: var(--space-lg);
        box-shadow: var(--box-shadow-lg);
        transform: translateY(-100%);
        transition: var(--transition);
        opacity: 0;
        visibility: hidden;
    }
    
    .nav-menu.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }
    
    .mobile-toggle {
        display: flex;
    }
    
    .mobile-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }
    
    .mobile-toggle.active span:nth-child(2) {
        opacity: 0;
    }
    
    .mobile-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -6px);
    }
    
    .auth-buttons {
        flex-direction: column;
        width: 100%;
        margin-top: var(--space-lg);
    }
    
    .hero {
        padding: 100px 0 var(--space-xl);
        min-height: auto;
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .hero-stats {
        flex-direction: column;
        gap: var(--space-lg);
    }
    
    .hero-visual {
        order: -1;
        margin-bottom: var(--space-xl);
    }
    
    .book-stack {
        transform: perspective(1000px) rotateY(0deg) scale(0.8);
    }
    
    .features-grid {
        grid-template-columns: 1fr;
        gap: var(--space-lg);
    }
    
    .courses-grid,
    .books-grid {
        grid-template-columns: 1fr;
    }
    
    .course-footer {
        flex-direction: column;
        gap: var(--space-md);
    }
    
    .testimonial-content {
        padding: var(--space-lg);
    }
    
    .testimonials-navigation {
        flex-direction: column;
        gap: var(--space-md);
    }
    
    .cta-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .footer-bottom-content {
        flex-direction: column;
        text-align: center;
    }
    
    .scroll-to-top {
        bottom: 20px;
        left: 20px;
        width: 45px;
        height: 45px;
    }
    
    .notification {
        right: var(--space-sm);
        left: var(--space-sm);
        max-width: none;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 1.75rem;
    }
    
    .section-title {
        font-size: 1.5rem;
    }
    
    .btn-lg {
        padding: var(--space-sm) var(--space-lg);
        font-size: var(--font-size-base);
    }
    
    .book-stack {
        transform: perspective(1000px) rotateY(0deg) scale(0.6);
    }
    
    .book {
        width: 150px;
        height: 210px;
    }
    
    .testimonial-content p {
        font-size: var(--font-size-base);
    }
}

/* ====== Animation Classes ====== */
.visible {
    opacity: 1 !important;
    transform: translateY(0) !important;
}

.feature-card,
.course-card,
.book-card {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease;
}

/* ====== Print Styles ====== */
@media print {
    .main-header,
    .scroll-to-top,
    .notification,
    .loading-screen {
        display: none !important;
    }
    
    .hero {
        padding: var(--space-lg) 0;
        background: none !important;
        color: var(--dark-color) !important;
    }
    
    .btn {
        border: 1px solid var(--dark-color) !important;
        background: none !important;
        color: var(--dark-color) !important;
    }
}

/* ====== High Contrast Mode ====== */
@media (prefers-contrast: high) {
    :root {
        --primary-color: #000;
        --text-color: #000;
        --border-color: #000;
    }
}

/* ====== Reduced Motion ====== */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    
    .scroll-to-top,
    .hero-visual,
    .floating-elements {
        animation: none !important;
    }
}

.welcome-msg {
    color: var(--primary-color);
    font-weight: 600;
    margin-left: 15px;
}

/* =========================================
   تنسيقات صفحة الدورات (Classroom Styles)
   ========================================= */
.courses-wrapper {
    max-width: 1200px;
    margin: 50px auto;
    padding: 20px;
}
.courses-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 30px;
}
.my-course-card {
    background: #fff;
    border: 1px solid #ddd;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 4px 10px rgba(0,0,0,0.1);
    transition: transform 0.2s;
    display: flex;
    flex-direction: column;
}
.my-course-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 20px rgba(0,0,0,0.15);
}
.card-image {
    height: 180px;
    background-color: #3498db;
    background-size: cover;
    background-position: center;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
}
.play-overlay {
    color: rgba(255,255,255,0.8);
    font-size: 50px;
    opacity: 0.8;
}
.card-body {
    padding: 20px;
    flex-grow: 1;
    text-align: right;
}
.card-title {
    font-size: 20px;
    font-weight: bold;
    color: #2c3e50;
    margin-bottom: 10px;
}
.card-text {
    color: #666;
    font-size: 14px;
    margin-bottom: 20px;
    line-height: 1.5;
}
.card-footer {
    padding: 15px 20px;
    background: #f8f9fa;
    border-top: 1px solid #eee;
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.price-badge {
    background: #e1f5fe;
    color: #0288d1;
    padding: 5px 10px;
    border-radius: 20px;
    font-weight: bold;
    font-size: 14px;
}
.btn-start {
    background: #27ae60;
    color: white;
    text-decoration: none;
    padding: 8px 20px;
    border-radius: 5px;
    font-weight: bold;
    transition: 0.3s;
}
.btn-start:hover { background: #219150; }

/* ====== Dark Mode Variables (إضافة في نهاية الملف) ====== */
[data-theme="dark"] {
    --white: #1a1a1a;        /* الخلفية الرئيسية */
    --light-color: #2c3e50;  /* خلفية الكروت */
    --text-color: #ecf0f1;   /* لون النصوص */
    --text-light: #bdc3c7;   /* نصوص فرعية */
    --dark-color: #ffffff;   /* عكسنا الألوان (الأسود بقى أبيض للعناوين) */
    --border-color: #444;    /* لون الحدود */
    
    /* تعديل التدرجات لتكون مناسبة للوضع الليلي */
    --gradient-primary: linear-gradient(135deg, #2c3e50 0%, #000000 100%);
}

/* كلاس مساعد عشان نجبر الخلفية تتغير */
body {
    background-color: var(--white);
    color: var(--text-color);
    transition: background-color 0.3s ease, color 0.3s ease;
}