/* ==========================================
   Global Styles & Variables
   ========================================== */
@import url('https://fonts.googleapis.com/css2?family=Cairo:wght@300;400;600;700;900&display=swap');

:root {
    --primary-color: #66FCF1;
    --secondary-color: #45A29E;
    --accent-color: #66FCF1;
    --dark-bg: #0B0C10;
    --medium-bg: #1F2833;
    --light-bg: #C5C6C7;
    --text-dark: #0B0C10;
    --text-light: #C5C6C7;
    --white: #ffffff;
    --border-radius: 16px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.4);
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: var(--text-dark);
    background: var(--light-bg);
    overflow-x: hidden;
}

body.rtl {
    font-family: 'Cairo', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

body.rtl {
    direction: rtl;
    text-align: right;
}

body.ltr {
    direction: ltr;
    text-align: left;
}

/* ==========================================
   Navigation & Language Switcher
   ========================================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: var(--dark-bg);
    backdrop-filter: blur(10px);
    padding: 1rem 2rem;
    box-shadow: var(--shadow-sm);
    z-index: 1000;
    transition: var(--transition);
}

.navbar-container {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--primary-color);
    text-decoration: none;
}

.logo img {
    width: 40px;
    height: 40px;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
    align-items: center;
}

.nav-menu a {
    text-decoration: none;
    color: var(--light-bg);
    font-weight: 500;
    transition: var(--transition);
    position: relative;
}

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

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-color);
    transition: var(--transition);
}

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

.lang-switcher {
    display: flex;
    gap: 0.5rem;
    align-items: center;
}

.lang-btn {
    padding: 0.5rem 1rem;
    border: 2px solid var(--primary-color);
    background: transparent;
    color: var(--primary-color);
    border-radius: 8px;
    cursor: pointer;
    font-weight: 600;
    transition: var(--transition);
}

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

/* Hamburger Menu for Mobile */
.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    padding: 0.5rem;
    z-index: 1001;
}

.hamburger span {
    width: 28px;
    height: 3px;
    background: var(--primary-color);
    border-radius: 3px;
    transition: var(--transition);
}

.hamburger.active span:nth-child(1) {
    transform: rotate(45deg) translate(8px, 8px);
}

.hamburger.active span:nth-child(2) {
    opacity: 0;
}

.hamburger.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -7px);
}

/* ==========================================
   Hero Section
   ========================================== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #1F2833 0%, #0B0C10 100%);
    position: relative;
    overflow: hidden;
    padding: 6rem 2rem 2rem;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1440 320"><path fill="%23ffffff" fill-opacity="0.1" d="M0,96L48,112C96,128,192,160,288,160C384,160,480,128,576,112C672,96,768,96,864,112C960,128,1056,160,1152,160C1248,160,1344,128,1392,112L1440,96L1440,320L1392,320C1344,320,1248,320,1152,320C1056,320,960,320,864,320C768,320,672,320,576,320C480,320,384,320,288,320C192,320,96,320,48,320L0,320Z"></path></svg>') no-repeat bottom;
    background-size: cover;
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    color: var(--white);
    max-width: 1200px;
}

.hero h1 {
    font-size: clamp(2rem, 5vw, 3.5rem);
    margin-bottom: 1.5rem;
    animation: fadeInUp 0.8s ease-out;
}

.hero p {
    font-size: clamp(1rem, 2vw, 1.25rem);
    margin-bottom: 2rem;
    opacity: 0.9;
    animation: fadeInUp 0.8s ease-out 0.2s backwards;
}

.cta-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
    animation: fadeInUp 0.8s ease-out 0.4s backwards;
}

.btn {
    padding: 1rem 2rem;
    border: none;
    border-radius: var(--border-radius);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
    display: inline-block;
}

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

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

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

.btn-outline:hover {
    background: var(--white);
    color: var(--primary-color);
    transform: translateY(-3px);
}

/* ==========================================
   Mind Map Section
   ========================================== */
.mindmap-section {
    padding: 4rem 2rem;
    background: var(--medium-bg);
}

.section-title {
    text-align: center;
    font-size: clamp(2rem, 4vw, 2.5rem);
    margin-bottom: 3rem;
    color: var(--primary-color);
}

.mindmap-section p {
    color: var(--light-bg);
}

.mindmap-container {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
}

.mindmap {
    position: relative;
    width: 100%;
    max-width: 1200px;
    padding: 3rem;
}

/* Center Node */
.center-node {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: var(--white);
    padding: 2rem 3rem;
    border-radius: 50%;
    width: 200px;
    height: 200px;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    font-size: 1.2rem;
    font-weight: bold;
    box-shadow: var(--shadow-lg);
    cursor: pointer;
    transition: var(--transition);
    z-index: 10;
}

.center-node:hover {
    transform: translate(-50%, -50%) scale(1.05);
    box-shadow: 0 12px 48px rgba(99, 102, 241, 0.4);
}

/* Branch Nodes */
.branch-node {
    position: absolute;
    background: var(--white);
    padding: 1.5rem 2rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-md);
    cursor: pointer;
    transition: var(--transition);
    max-width: 250px;
    border: 3px solid transparent;
}

.branch-node:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-color);
}

.branch-node.collapsed {
    background: var(--primary-color);
    color: var(--white);
    padding: 1rem 1.5rem;
}

.branch-node.collapsed .node-content {
    display: none;
}

.branch-node.collapsed .node-title::after {
    content: ' +';
    font-size: 1.5rem;
    margin-left: 0.5rem;
}

.branch-node.expanded .node-title::after {
    content: ' −';
    font-size: 1.5rem;
    margin-left: 0.5rem;
}

.node-title {
    font-size: 1.1rem;
    font-weight: bold;
    color: var(--primary-color);
    margin-bottom: 0.75rem;
}

.branch-node.collapsed .node-title {
    color: var(--white);
    margin-bottom: 0;
}

.node-content {
    font-size: 0.95rem;
    color: var(--text-light);
    line-height: 1.6;
}

/* Positioning for 8 nodes around center */
.node-1 { top: 10%; left: 50%; transform: translateX(-50%); }
.node-2 { top: 25%; right: 10%; }
.node-3 { top: 50%; right: 5%; transform: translateY(-50%); }
.node-4 { bottom: 25%; right: 10%; }
.node-5 { bottom: 10%; left: 50%; transform: translateX(-50%); }
.node-6 { bottom: 25%; left: 10%; }
.node-7 { top: 50%; left: 5%; transform: translateY(-50%); }
.node-8 { top: 25%; left: 10%; }

/* Connecting Lines */
.mindmap-line {
    position: absolute;
    background: linear-gradient(90deg, var(--primary-color), transparent);
    height: 2px;
    transform-origin: left center;
    pointer-events: none;
    z-index: 1;
    opacity: 0.3;
}

/* ==========================================
   Content Pages Section
   ========================================== */
.content-section {
    padding: 4rem 2rem;
    background: var(--dark-bg);
}

.content-grid {
    max-width: 1400px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.content-card {
    background: var(--medium-bg);
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
    text-decoration: none;
    color: var(--light-bg);
    border: 2px solid transparent;
}

.content-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-color);
}

.content-card-image {
    width: 100%;
    height: 250px;
    object-fit: cover;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--dark-bg);
    font-size: 4rem;
}

.content-card-body {
    padding: 2rem;
}

.content-card-title {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--primary-color);
}

.content-card-description {
    color: var(--light-bg);
    line-height: 1.6;
}

/* ==========================================
   Media Player Pages
   ========================================== */
.media-section {
    min-height: 100vh;
    padding: 8rem 2rem 4rem;
    background: var(--medium-bg);
}

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

.media-player {
    background: var(--dark-bg);
    border-radius: var(--border-radius);
    padding: 3rem;
    box-shadow: var(--shadow-lg);
    border: 2px solid var(--primary-color);
}

.audio-player-wrapper,
.video-player-wrapper {
    margin: 2rem 0;
}

.audio-player-custom {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    padding: 2rem;
    border-radius: var(--border-radius);
    color: var(--dark-bg);
}

.audio-controls {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-top: 1rem;
}

.play-btn {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: var(--dark-bg);
    color: var(--primary-color);
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
}

.play-btn:hover {
    transform: scale(1.1);
    box-shadow: 0 0 20px var(--primary-color);
}

.progress-bar {
    flex: 1;
    height: 8px;
    background: rgba(11, 12, 16, 0.3);
    border-radius: 4px;
    overflow: hidden;
    cursor: pointer;
}

.progress-fill {
    height: 100%;
    background: var(--dark-bg);
    width: 0%;
    transition: width 0.1s linear;
}

video {
    width: 100%;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-md);
}

/* ==========================================
   Content Detail Page
   ========================================== */
.detail-page {
    min-height: 100vh;
    padding: 8rem 2rem 4rem;
    background: var(--medium-bg);
}

.detail-container {
    max-width: 1000px;
    margin: 0 auto;
    background: var(--dark-bg);
    border-radius: var(--border-radius);
    padding: 3rem;
    box-shadow: var(--shadow-lg);
    border: 2px solid var(--primary-color);
}

.detail-header {
    margin-bottom: 2rem;
}

.detail-title {
    font-size: clamp(2rem, 4vw, 3rem);
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.detail-content {
    line-height: 1.8;
    font-size: 1.1rem;
    color: var(--light-bg);
}

.detail-content h2 {
    color: var(--primary-color);
    margin: 2rem 0 1rem;
    font-size: 1.8rem;
}

.detail-content h3 {
    color: var(--secondary-color);
    margin: 1.5rem 0 0.75rem;
    font-size: 1.4rem;
}

.detail-content p {
    margin-bottom: 1rem;
}

.detail-content ul,
.detail-content ol {
    margin: 1rem 0 1rem 2rem;
}

.detail-content li {
    margin-bottom: 0.5rem;
}

.back-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 2rem;
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
}

.back-btn:hover {
    gap: 1rem;
}

/* ==========================================
   Footer
   ========================================== */
.footer {
    background: var(--dark-bg);
    color: var(--white);
    padding: 3rem 2rem 1rem;
    text-align: center;
}

.footer-content {
    max-width: 1400px;
    margin: 0 auto;
}

.footer p {
    opacity: 0.8;
}

/* ==========================================
   Animations
   ========================================== */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

.animate-pulse {
    animation: pulse 2s infinite;
}

/* ==========================================
   Responsive Design
   ========================================== */
@media (max-width: 768px) {
    .hamburger {
        display: flex;
    }
    
    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background: var(--dark-bg);
        width: 100%;
        text-align: center;
        transition: var(--transition);
        box-shadow: var(--shadow-lg);
        padding: 2rem 0;
    }
    
    .nav-menu a {
        color: var(--light-bg);
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .lang-switcher {
        margin-top: 1rem;
    }
    
    .mindmap {
        padding: 1rem;
        height: 800px;
    }
    
    .center-node {
        width: 150px;
        height: 150px;
        font-size: 1rem;
        padding: 1.5rem;
    }
    
    .branch-node {
        max-width: 180px;
        padding: 1rem 1.25rem;
        font-size: 0.85rem;
    }
    
    /* تعديل شبكة البطاقات للموبايل */
    .content-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    /* تقليل حجم صورة البطاقة في الموبايل */
    .content-card-image {
        height: 120px;
        font-size: 2.5rem;
    }
    
    /* إخفاء الوصف في الموبايل */
    .content-card-description {
        display: none;
    }
    
    .content-card-body {
        padding: 1.25rem;
    }
    
    .content-card-title {
        font-size: 1.2rem;
        margin-bottom: 0;
    }
    
    /* أول 3 بطاقات في صف واحد */
    .content-grid .content-card:nth-child(1),
    .content-grid .content-card:nth-child(2),
    .content-grid .content-card:nth-child(3) {
        grid-column: span 1;
    }
    
    /* تخطيط خاص للشاشات الصغيرة جداً */
    @media (min-width: 480px) {
        .content-grid {
            grid-template-columns: repeat(3, 1fr);
            gap: 1rem;
        }
        
        .content-grid .content-card:nth-child(1),
        .content-grid .content-card:nth-child(2),
        .content-grid .content-card:nth-child(3) {
            grid-column: span 1;
        }
        
        .content-grid .content-card:nth-child(4),
        .content-grid .content-card:nth-child(5) {
            grid-column: span 1;
        }
        
        /* وسط البطاقتين الأخيرتين */
        .content-grid .content-card:nth-child(4) {
            grid-column: 1 / 2;
            margin-left: auto;
            margin-right: 0.5rem;
        }
        
        .content-grid .content-card:nth-child(5) {
            grid-column: 2 / 3;
            margin-right: auto;
            margin-left: 0.5rem;
        }
    }
    
    .cta-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .btn {
        width: 100%;
        max-width: 300px;
    }
}

@media (max-width: 480px) {
    .navbar {
        padding: 1rem;
    }
    
    .hero {
        padding: 5rem 1rem 2rem;
    }
    
    .detail-container {
        padding: 2rem 1.5rem;
    }
    
    .media-player {
        padding: 2rem 1.5rem;
    }
}

/* RTL Support */
.rtl .nav-menu a::after {
    right: 0;
    left: auto;
}

.rtl .back-btn:hover {
    gap: 1rem;
    transform: translateX(5px);
}

.rtl .detail-content ul,
.rtl .detail-content ol {
    margin: 1rem 2rem 1rem 0;
}

/* Loading Animation */
.loader {
    border: 4px solid rgba(99, 102, 241, 0.1);
    border-top: 4px solid var(--primary-color);
    border-radius: 50%;
    width: 50px;
    height: 50px;
    animation: spin 1s linear infinite;
    margin: 2rem auto;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}