/* ============================================
   ULTRA MODERN DARK THEME - CYBERPUNK EDITION
   ============================================ */

@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@300;400;500;600;700&family=JetBrains+Mono:wght@400;600&display=swap');

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

:root {
    /* BLACK & YELLOW Theme - Primary Colors */
    --primary-yellow: #FFD700;
    --dark-yellow: #FFC700;
    --light-yellow: #FFE55C;
    --amber: #FFBF00;
    --gold: #D4AF37;
    
    /* Accent Colors */
    --orange: #FF8C00;
    --success: #00ff88;
    --warning: #FF8C00;
    --danger: #ff3355;
    --info: #FFD700;
    
    /* Black Backgrounds */
    --bg-void: #000000;
    --bg-space: #0a0a0a;
    --bg-dark: #111111;
    --bg-darker: #1a1a1a;
    --bg-card: #1f1f1f;
    --bg-elevated: #252525;
    --bg-glass: rgba(31, 31, 31, 0.7);
    
    /* Text - High Contrast */
    --text-glow: #ffffff;
    --text-primary: #f0f0f0;
    --text-secondary: #c0c0c0;
    --text-muted: #808080;
    --text-dim: #505050;
    
    /* Borders & Effects */
    --border-yellow: rgba(255, 215, 0, 0.4);
    --border-subtle: rgba(255, 215, 0, 0.15);
    --border-glow: rgba(255, 215, 0, 0.6);
    
    /* Shadows & Glows */
    --shadow-deep: 0 8px 32px rgba(0, 0, 0, 0.8);
    --shadow-elevated: 0 16px 48px rgba(0, 0, 0, 0.9);
    --glow-yellow: 0 0 20px rgba(255, 215, 0, 0.4);
    --glow-strong: 0 0 30px rgba(255, 215, 0, 0.6);
}

/* ============================================
   GLOBAL STYLES
   ============================================ */

body {
    font-family: 'Space Grotesk', -apple-system, sans-serif;
    background: var(--bg-void);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    position: relative;
}

/* Animated Background Grid - BLACK & YELLOW */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        linear-gradient(90deg, rgba(255, 215, 0, 0.05) 1px, transparent 1px),
        linear-gradient(rgba(255, 215, 0, 0.05) 1px, transparent 1px);
    background-size: 50px 50px;
    pointer-events: none;
    z-index: 0;
    animation: gridMove 20s linear infinite;
}

@keyframes gridMove {
    0% { transform: translate(0, 0); }
    100% { transform: translate(50px, 50px); }
}

/* Glowing Orbs Background - YELLOW */
body::after {
    content: '';
    position: fixed;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: 
        radial-gradient(circle at 20% 30%, rgba(255, 215, 0, 0.1) 0%, transparent 40%),
        radial-gradient(circle at 80% 70%, rgba(255, 191, 0, 0.08) 0%, transparent 40%),
        radial-gradient(circle at 50% 50%, rgba(255, 140, 0, 0.06) 0%, transparent 50%);
    pointer-events: none;
    z-index: 0;
    animation: orbFloat 30s ease-in-out infinite;
}

@keyframes orbFloat {
    0%, 100% { transform: translate(0, 0) rotate(0deg); }
    50% { transform: translate(5%, 5%) rotate(180deg); }
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 32px;
    position: relative;
    z-index: 1;
}

/* ============================================
   SCROLLBAR STYLING - BLACK & YELLOW
   ============================================ */

::-webkit-scrollbar {
    width: 12px;
}

::-webkit-scrollbar-track {
    background: var(--bg-space);
}

::-webkit-scrollbar-thumb {
    background: linear-gradient(180deg, var(--primary-yellow), var(--amber));
    border-radius: 6px;
    border: 2px solid var(--bg-space);
}

::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(180deg, var(--light-yellow), var(--primary-yellow));
    box-shadow: var(--glow-yellow);
}

/* ============================================
   NAVIGATION - BLACK & YELLOW THEME
   ============================================ */

.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: #000000;
    border-bottom: 2px solid #FFD700;
    box-shadow: 0 4px 20px rgba(255, 215, 0, 0.3);
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 18px 32px;
    max-width: 1400px;
    margin: 0 auto;
}

.nav-brand {
    display: flex;
    align-items: center;
}

.nav-brand a {
    color: #FFD700;
    text-decoration: none;
    font-size: 26px;
    font-weight: 800;
    letter-spacing: -0.5px;
    display: flex;
    align-items: center;
    gap: 12px;
    text-shadow: 0 0 20px rgba(255, 215, 0, 0.5);
    transition: all 0.3s ease;
    padding: 8px 12px;
}

.nav-brand a:hover {
    text-shadow: 0 0 30px rgba(255, 215, 0, 0.8);
    transform: scale(1.05);
}

.nav-brand i {
    font-size: 32px;
    color: #FFD700;
    filter: drop-shadow(0 0 10px rgba(255, 215, 0, 0.6));
}

/* Mobile Menu Toggle */
.nav-toggle {
    display: none;
    background: transparent;
    border: 2px solid #FFD700;
    color: #FFD700;
    font-size: 24px;
    padding: 8px 16px;
    cursor: pointer;
    border-radius: 8px;
    transition: all 0.3s ease;
}

.nav-toggle:hover {
    background: rgba(255, 215, 0, 0.1);
    box-shadow: 0 0 20px rgba(255, 215, 0, 0.4);
}

.nav-menu {
    display: flex;
    list-style: none;
    align-items: center;
    gap: 4px;
    margin: 0;
    padding: 0;
}

.nav-menu > li {
    position: relative;
}

.nav-menu a,
.nav-menu .dropbtn {
    color: #e8e8e8;
    text-decoration: none;
    padding: 14px 28px;
    border-radius: 10px;
    font-weight: 600;
    font-size: 16px;
    transition: all 0.3s ease;
    display: block;
    cursor: pointer;
    background: transparent;
    border: 2px solid transparent;
    white-space: nowrap;
}

.nav-menu a:hover,
.nav-menu .dropbtn:hover {
    color: #FFD700;
    background: rgba(255, 215, 0, 0.1);
    border-color: #FFD700;
    box-shadow: 0 0 20px rgba(255, 215, 0, 0.3);
    transform: translateY(-2px);
}

.nav-menu a.active {
    color: #000000;
    background: #FFD700;
    border-color: #FFD700;
    box-shadow: 0 0 25px rgba(255, 215, 0, 0.5);
    font-weight: 700;
}

/* Dropdown - NAGYOBB ÉRZÉKELÉSI TERÜLET */
.dropdown {
    position: relative;
}

.dropdown .dropbtn {
    display: flex;
    align-items: center;
    gap: 8px;
    min-width: 140px;
    justify-content: center;
}

.dropdown .dropbtn i {
    font-size: 12px;
    transition: transform 0.3s ease;
}

.dropdown:hover .dropbtn i {
    transform: rotate(180deg);
}

.dropdown-content {
    display: none;
    position: absolute;
    right: 0;
    top: 100%;
    background: #0a0a0a;
    min-width: 260px;
    border: 2px solid #FFD700;
    border-radius: 12px;
    box-shadow: 0 8px 32px rgba(255, 215, 0, 0.4);
    overflow: hidden;
    margin-top: 8px;
    animation: dropdownSlide 0.3s ease;
}

@keyframes dropdownSlide {
    from {
        opacity: 0;
        transform: translateY(-15px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* KRITIKUS: Nagyobb hover terület a dropdown megjelenítéséhez */
.dropdown::before {
    content: '';
    position: absolute;
    top: 0;
    left: -10px;
    right: -10px;
    bottom: -15px;
    z-index: -1;
}

.dropdown:hover .dropdown-content,
.dropdown-content:hover {
    display: block;
}

.dropdown-content a {
    color: #e8e8e8;
    padding: 16px 24px;
    display: flex;
    align-items: center;
    gap: 14px;
    font-size: 15px;
    border-radius: 0;
    border: none;
    border-bottom: 1px solid rgba(255, 215, 0, 0.15);
    transition: all 0.3s ease;
    min-height: 56px;
}

.dropdown-content a:last-child {
    border-bottom: none;
}

.dropdown-content a i {
    font-size: 18px;
    width: 24px;
    text-align: center;
    color: #FFD700;
}

.dropdown-content a:hover {
    background: rgba(255, 215, 0, 0.15);
    color: #FFD700;
    padding-left: 32px;
    box-shadow: inset 4px 0 0 #FFD700;
}

/* Mobile Menu */
@media (max-width: 968px) {
    .nav-toggle {
        display: block;
    }
    
    .nav-menu {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: #000000;
        border-top: 2px solid #FFD700;
        flex-direction: column;
        gap: 0;
        padding: 20px 0;
        box-shadow: 0 8px 32px rgba(255, 215, 0, 0.3);
    }
    
    .nav-menu.active {
        display: flex;
    }
    
    .nav-menu > li {
        width: 100%;
    }
    
    .nav-menu a,
    .nav-menu .dropbtn {
        width: 100%;
        text-align: left;
        padding: 16px 32px;
        border-radius: 0;
        border-left: 4px solid transparent;
    }
    
    .nav-menu a:hover,
    .nav-menu .dropbtn:hover {
        border-left-color: #FFD700;
        transform: translateX(8px);
    }
    
    .dropdown-content {
        position: static;
        border: none;
        border-left: 4px solid #FFD700;
        margin: 0;
        margin-left: 20px;
        box-shadow: none;
    }
    
    .dropdown-content a {
        padding-left: 48px;
    }
}

/* ============================================
   BUTTONS - BLACK & YELLOW
   ============================================ */

.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 14px 32px;
    border: none;
    border-radius: 12px;
    cursor: pointer;
    text-decoration: none;
    font-weight: 700;
    font-size: 15px;
    transition: all 0.3s ease;
    font-family: 'Space Grotesk', sans-serif;
    position: relative;
    overflow: hidden;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.btn:hover::before {
    width: 300px;
    height: 300px;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-yellow), var(--amber));
    color: #000000;
    box-shadow: var(--glow-yellow);
    border: 2px solid var(--primary-yellow);
    font-weight: 800;
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 0 40px rgba(255, 215, 0, 0.6);
    background: var(--primary-yellow);
}

.btn-success {
    background: linear-gradient(135deg, var(--success), #00cc66);
    color: #000000;
    box-shadow: 0 0 20px rgba(0, 255, 136, 0.4);
    border: 2px solid var(--success);
}

.btn-danger {
    background: linear-gradient(135deg, var(--danger), #cc0044);
    color: var(--text-glow);
    box-shadow: 0 0 20px rgba(255, 51, 85, 0.4);
    border: 2px solid var(--danger);
}

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

.btn-secondary:hover {
    border-color: var(--primary-yellow);
    background: rgba(255, 215, 0, 0.1);
    box-shadow: var(--glow-yellow);
    color: var(--primary-yellow);
}

.btn-ghost {
    background: transparent;
    color: var(--text-secondary);
    border: 2px solid var(--border-subtle);
}

.btn-ghost:hover {
    background: rgba(255, 215, 0, 0.1);
    border-color: var(--primary-yellow);
    color: var(--primary-yellow);
    box-shadow: var(--glow-yellow);
}

.btn-small {
    padding: 10px 20px;
    font-size: 14px;
}

/* ============================================
   FLASH MESSAGES - ANIMATED
   ============================================ */

.flash-message {
    padding: 18px 24px;
    margin-bottom: 24px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    gap: 14px;
    font-size: 14px;
    backdrop-filter: blur(10px);
    animation: flashSlide 0.5s ease;
    border-left: 4px solid;
}

@keyframes flashSlide {
    from {
        opacity: 0;
        transform: translateX(-20px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.flash-success {
    background: rgba(0, 255, 136, 0.1);
    color: var(--success);
    border-color: var(--success);
    box-shadow: 0 0 15px rgba(0, 255, 136, 0.2);
}

.flash-error {
    background: rgba(255, 51, 85, 0.1);
    color: var(--danger);
    border-color: var(--danger);
    box-shadow: 0 0 15px rgba(255, 51, 85, 0.2);
}

.flash-warning {
    background: rgba(255, 170, 0, 0.1);
    color: var(--warning);
    border-color: var(--warning);
    box-shadow: 0 0 15px rgba(255, 170, 0, 0.2);
}

/* ============================================
   MAIN CONTENT
   ============================================ */

.main-content {
    min-height: calc(100vh - 200px);
    padding: 40px 0;
    margin-top: 90px;
    position: relative;
    z-index: 1;
}

.page-title {
    font-size: 48px;
    font-weight: 700;
    margin-bottom: 40px;
    background: linear-gradient(135deg, var(--text-glow), var(--primary-yellow));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    letter-spacing: -1px;
    text-shadow: var(--glow-yellow);
}

/* ============================================
   HERO SECTION - BLACK & YELLOW
   ============================================ */

.hero {
    padding: 120px 0 100px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    left: 50%;
    transform: translateX(-50%);
    width: 800px;
    height: 800px;
    background: radial-gradient(circle, rgba(255, 215, 0, 0.15), transparent 70%);
    filter: blur(100px);
    pointer-events: none;
    animation: heroGlow 4s ease-in-out infinite;
}

@keyframes heroGlow {
    0%, 100% { opacity: 0.5; }
    50% { opacity: 1; }
}

.hero h1 {
    font-size: clamp(48px, 8vw, 84px);
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: 24px;
    letter-spacing: -2px;
    position: relative;
    z-index: 1;
}

.hero h1 .gradient-text {
    background: linear-gradient(135deg, var(--primary-yellow), var(--amber), var(--orange));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: gradientShift 6s ease infinite;
    background-size: 200% 200%;
}

@keyframes gradientShift {
    0%, 100% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
}

.hero p {
    font-size: 20px;
    color: var(--text-secondary);
    margin-bottom: 48px;
    line-height: 1.7;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

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

/* ============================================
   CATEGORY GRID - BLACK & YELLOW CARDS
   ============================================ */

.category-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 24px;
    margin: 48px 0;
}

.category-card {
    background: var(--bg-card);
    padding: 40px;
    border-radius: 20px;
    border: 2px solid var(--border-subtle);
    text-align: center;
    text-decoration: none;
    color: var(--text-primary);
    transition: all 0.4s ease;
    position: relative;
    overflow: hidden;
}

.category-card::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255, 215, 0, 0.1), transparent 70%);
    opacity: 0;
    transition: opacity 0.4s ease;
}

.category-card:hover::before {
    opacity: 1;
}

.category-card:hover {
    transform: translateY(-8px);
    border-color: var(--primary-yellow);
    box-shadow: var(--shadow-elevated), var(--glow-yellow);
}

.category-card .icon {
    font-size: 56px;
    margin-bottom: 20px;
    background: linear-gradient(135deg, var(--primary-yellow), var(--amber));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    filter: drop-shadow(var(--glow-yellow));
}

.category-card h3 {
    margin-bottom: 12px;
    font-size: 24px;
    font-weight: 700;
    color: var(--text-glow);
}

.category-card p {
    color: var(--text-secondary);
    font-size: 15px;
    line-height: 1.6;
}

/* ============================================
   COURSE GRID - BLACK & YELLOW
   ============================================ */

.course-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(360px, 1fr));
    gap: 28px;
    margin: 48px 0;
}

.course-card {
    background: var(--bg-card);
    border-radius: 20px;
    border: 2px solid var(--border-subtle);
    overflow: hidden;
    transition: all 0.4s ease;
    text-decoration: none;
    color: var(--text-primary);
    position: relative;
}

.course-card::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-yellow), var(--amber), var(--orange));
    transform: scaleX(0);
    transition: transform 0.4s ease;
}

.course-card:hover::after {
    transform: scaleX(1);
}

.course-card:hover {
    transform: translateY(-8px);
    border-color: var(--primary-yellow);
    box-shadow: var(--shadow-elevated), var(--glow-yellow);
}

.course-thumbnail {
    width: 100%;
    height: 240px;
    object-fit: cover;
    background: linear-gradient(135deg, var(--amber), var(--orange));
}

.course-content {
    padding: 28px;
}

.course-category {
    display: inline-flex;
    align-items: center;
    background: rgba(255, 215, 0, 0.2);
    color: var(--primary-yellow);
    padding: 6px 14px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 700;
    margin-bottom: 14px;
    border: 1px solid var(--border-yellow);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.course-title {
    font-size: 22px;
    font-weight: 700;
    margin-bottom: 10px;
    line-height: 1.3;
    color: var(--text-glow);
}

.course-instructor {
    color: var(--text-muted);
    font-size: 14px;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.course-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 20px;
    padding-top: 20px;
    border-top: 1px solid var(--border-subtle);
}

.difficulty {
    padding: 6px 14px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.3px;
}

.difficulty.kezdo {
    background: rgba(0, 255, 136, 0.15);
    color: var(--success);
    border: 1px solid rgba(0, 255, 136, 0.3);
}

.difficulty.halado {
    background: rgba(255, 215, 0, 0.2);
    color: var(--primary-yellow);
    border: 1px solid var(--border-yellow);
}

.difficulty.expert {
    background: rgba(255, 51, 85, 0.15);
    color: var(--danger);
    border: 1px solid rgba(255, 51, 85, 0.3);
}

/* ============================================
   FORMS - GLASSMORPHISM
   ============================================ */

.form-container {
    max-width: 540px;
    margin: 48px auto;
    background: var(--bg-glass);
    backdrop-filter: blur(20px);
    padding: 48px;
    border-radius: 24px;
    border: 1px solid var(--border-neon);
    box-shadow: var(--shadow-elevated), var(--glow-cyan);
}

.form-container h2 {
    font-size: 32px;
    font-weight: 700;
    margin-bottom: 32px;
    text-align: center;
    background: linear-gradient(135deg, var(--text-glow), var(--neon-cyan));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.form-group {
    margin-bottom: 28px;
}

.form-group label {
    display: block;
    margin-bottom: 10px;
    font-weight: 600;
    color: var(--text-primary);
    font-size: 14px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.form-control {
    width: 100%;
    padding: 14px 18px;
    background: var(--bg-elevated);
    border: 1px solid var(--border-subtle);
    border-radius: 12px;
    font-size: 15px;
    color: var(--text-primary);
    font-family: 'Space Grotesk', sans-serif;
    transition: all 0.3s ease;
}

.form-control:focus {
    outline: none;
    border-color: var(--neon-cyan);
    background: var(--bg-darker);
    box-shadow: var(--glow-cyan);
}

.form-control::placeholder {
    color: var(--text-muted);
}

textarea.form-control {
    min-height: 140px;
    resize: vertical;
}

select.form-control {
    cursor: pointer;
}

/* ============================================
   LESSON CONTAINER
   ============================================ */

.lesson-container {
    display: grid;
    grid-template-columns: 1fr 400px;
    gap: 32px;
    margin-top: 48px;
}

.lesson-main {
    background: var(--bg-card);
    border-radius: 24px;
    border: 1px solid var(--border-subtle);
    overflow: hidden;
    box-shadow: var(--shadow-deep);
}

.video-player {
    width: 100%;
    aspect-ratio: 16/9;
    background: var(--bg-void);
}

.lesson-content-area {
    padding: 40px;
}

.lesson-content-area h2 {
    font-size: 32px;
    font-weight: 700;
    margin-bottom: 20px;
    color: var(--text-glow);
}

.lesson-content-area p {
    color: var(--text-secondary);
    line-height: 1.8;
    font-size: 16px;
}

.lesson-sidebar {
    background: var(--bg-glass);
    backdrop-filter: blur(20px);
    border-radius: 24px;
    border: 1px solid var(--border-neon);
    padding: 28px;
    height: fit-content;
    position: sticky;
    top: 120px;
    box-shadow: var(--glow-cyan);
}

.lesson-sidebar h3 {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 24px;
    color: var(--text-glow);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.lesson-list {
    list-style: none;
}

.lesson-item {
    padding: 14px 16px;
    border-radius: 12px;
    cursor: pointer;
    margin-bottom: 6px;
    display: flex;
    align-items: center;
    gap: 12px;
    color: var(--text-secondary);
    font-size: 14px;
    transition: all 0.3s ease;
    border: 1px solid transparent;
}

.lesson-item:hover {
    background: var(--bg-elevated);
    color: var(--text-primary);
    border-color: var(--border-subtle);
}

.lesson-item.active {
    background: linear-gradient(135deg, var(--neon-cyan), var(--electric-blue));
    color: var(--bg-void);
    border-color: var(--neon-cyan);
    box-shadow: var(--glow-cyan);
    font-weight: 600;
}

.lesson-item.completed {
    color: var(--success);
}

.lesson-item i {
    font-size: 16px;
}

/* ============================================
   COMMENTS
   ============================================ */

.comments-section {
    margin-top: 56px;
    padding-top: 40px;
    border-top: 1px solid var(--border-subtle);
}

.comments-section h3 {
    font-size: 28px;
    font-weight: 700;
    margin-bottom: 32px;
    color: var(--text-glow);
}

.comment {
    background: var(--bg-elevated);
    padding: 24px;
    border-radius: 16px;
    margin-bottom: 20px;
    border: 1px solid var(--border-subtle);
    transition: all 0.3s ease;
}

.comment:hover {
    border-color: var(--border-neon);
    box-shadow: var(--glow-cyan);
}

.comment-header {
    display: flex;
    justify-content: space-between;
    margin-bottom: 14px;
    font-size: 13px;
}

.comment-author {
    font-weight: 600;
    color: var(--neon-cyan);
}

.comment-date {
    color: var(--text-muted);
}

.comment-body {
    color: var(--text-secondary);
    line-height: 1.7;
    font-size: 15px;
}

.comment-reply {
    margin-left: 48px;
    margin-top: 20px;
}

/* ============================================
   QUIZ - NEON STYLE
   ============================================ */

.quiz-container {
    background: var(--bg-glass);
    backdrop-filter: blur(20px);
    padding: 48px;
    border-radius: 24px;
    border: 1px solid var(--border-neon);
    max-width: 900px;
    margin: 48px auto;
    box-shadow: var(--shadow-elevated), var(--glow-cyan);
}

.quiz-question {
    margin-bottom: 48px;
}

.quiz-question h3 {
    margin-bottom: 24px;
    font-size: 24px;
    font-weight: 700;
    color: var(--text-glow);
}

.quiz-options {
    list-style: none;
}

.quiz-option {
    padding: 18px 24px;
    margin-bottom: 14px;
    background: var(--bg-elevated);
    border: 2px solid var(--border-subtle);
    border-radius: 14px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 14px;
    color: var(--text-primary);
    transition: all 0.3s ease;
}

.quiz-option:hover {
    border-color: var(--neon-cyan);
    background: rgba(0, 245, 255, 0.1);
    box-shadow: var(--glow-cyan);
}

.quiz-option input[type="radio"] {
    accent-color: var(--neon-cyan);
    width: 20px;
    height: 20px;
}

.quiz-option.selected {
    border-color: var(--neon-cyan);
    background: rgba(0, 245, 255, 0.15);
    box-shadow: var(--glow-cyan);
}

.quiz-result {
    text-align: center;
    padding: 64px 40px;
}

.quiz-result h2 {
    font-size: 36px;
    font-weight: 800;
    margin-bottom: 20px;
    color: var(--text-glow);
}

.quiz-score {
    font-size: 96px;
    font-weight: 900;
    margin: 32px 0;
    font-family: 'JetBrains Mono', monospace;
}

.quiz-score.passed {
    color: var(--success);
    text-shadow: 0 0 40px var(--success);
}

.quiz-score.failed {
    color: var(--danger);
    text-shadow: 0 0 40px var(--danger);
}

/* ============================================
   ADMIN PANEL
   ============================================ */

.admin-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 48px;
}

.admin-header h1 {
    font-size: 48px;
    font-weight: 800;
    background: linear-gradient(135deg, var(--text-glow), var(--neon-cyan));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.admin-tabs {
    display: flex;
    gap: 12px;
    margin-bottom: 40px;
    background: var(--bg-card);
    padding: 12px;
    border-radius: 20px;
    border: 1px solid var(--border-subtle);
}

.admin-tab {
    padding: 12px 32px;
    background: transparent;
    border: none;
    border-radius: 14px;
    cursor: pointer;
    font-size: 15px;
    font-weight: 600;
    color: var(--text-secondary);
    font-family: 'Space Grotesk', sans-serif;
    transition: all 0.3s ease;
}

.admin-tab:hover {
    color: var(--text-primary);
    background: var(--bg-elevated);
}

.admin-tab.active {
    background: linear-gradient(135deg, var(--neon-cyan), var(--electric-blue));
    color: var(--bg-void);
    box-shadow: var(--glow-cyan);
}

/* Stats Cards */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
    margin-bottom: 48px;
}

.stat-card {
    background: var(--bg-glass);
    backdrop-filter: blur(20px);
    padding: 36px;
    border-radius: 20px;
    border: 1px solid var(--border-neon);
    text-align: center;
    box-shadow: var(--glow-cyan);
}

.stat-card h2 {
    font-size: 56px;
    font-weight: 900;
    margin-bottom: 12px;
    background: linear-gradient(135deg, var(--neon-cyan), var(--neon-magenta));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    font-family: 'JetBrains Mono', monospace;
}

.stat-card p {
    color: var(--text-secondary);
    font-size: 14px;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* Data Table */
.data-table {
    width: 100%;
    background: var(--bg-card);
    border-radius: 24px;
    border: 1px solid var(--border-subtle);
    overflow: hidden;
    box-shadow: var(--shadow-deep);
}

.data-table table {
    width: 100%;
    border-collapse: collapse;
}

.data-table th {
    background: var(--bg-darker);
    color: var(--text-glow);
    padding: 18px 24px;
    text-align: left;
    font-weight: 700;
    font-size: 13px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    border-bottom: 2px solid var(--border-neon);
}

.data-table td {
    padding: 18px 24px;
    border-top: 1px solid var(--border-subtle);
    color: var(--text-secondary);
    font-size: 14px;
}

.data-table tr:hover {
    background: var(--bg-elevated);
}

.badge {
    display: inline-flex;
    align-items: center;
    padding: 5px 12px;
    border-radius: 20px;
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.3px;
}

.badge-admin {
    background: rgba(255, 51, 85, 0.2);
    color: var(--danger);
    border: 1px solid rgba(255, 51, 85, 0.4);
}

.badge-oktato {
    background: rgba(0, 221, 255, 0.2);
    color: var(--info);
    border: 1px solid rgba(0, 221, 255, 0.4);
}

.badge-diak {
    background: rgba(0, 245, 255, 0.2);
    color: var(--neon-cyan);
    border: 1px solid rgba(0, 245, 255, 0.4);
}

/* ============================================
   PROGRESS BAR - NEON
   ============================================ */

.progress-bar {
    width: 100%;
    height: 10px;
    background: var(--bg-elevated);
    border-radius: 10px;
    overflow: hidden;
    position: relative;
}

.progress-bar::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(90deg, transparent, rgba(0, 245, 255, 0.3), transparent);
    animation: progressShimmer 2s infinite;
}

@keyframes progressShimmer {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(100%); }
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--success), var(--neon-cyan));
    border-radius: 10px;
    transition: width 0.5s ease;
    box-shadow: 0 0 15px var(--success);
}

/* ============================================
   FOOTER
   ============================================ */

.footer {
    background: var(--bg-dark);
    border-top: 1px solid var(--border-neon);
    padding: 80px 0 40px;
    margin-top: 120px;
    box-shadow: 0 -4px 40px rgba(0, 245, 255, 0.1);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 60px;
    margin-bottom: 60px;
}

.footer-section h3,
.footer-section h4 {
    margin-bottom: 24px;
    font-weight: 700;
    font-size: 18px;
    color: var(--text-glow);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

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

.footer-section a {
    color: var(--text-secondary);
    text-decoration: none;
    line-height: 2.2;
    font-size: 14px;
    transition: all 0.3s ease;
    display: inline-block;
}

.footer-section a:hover {
    color: var(--neon-cyan);
    transform: translateX(4px);
    text-shadow: var(--glow-cyan);
}

.footer-bottom {
    text-align: center;
    padding-top: 40px;
    border-top: 1px solid var(--border-subtle);
    color: var(--text-muted);
    font-size: 13px;
}

/* ============================================
   SEARCH BAR - NEON
   ============================================ */

.search-container {
    background: var(--bg-glass);
    backdrop-filter: blur(20px);
    padding: 40px;
    border-radius: 24px;
    border: 1px solid var(--border-neon);
    margin: 40px 0;
    box-shadow: var(--glow-cyan);
}

.search-bar {
    display: flex;
    gap: 16px;
    align-items: center;
}

.search-input {
    flex: 1;
    padding: 16px 24px;
    background: var(--bg-elevated);
    border: 1px solid var(--border-subtle);
    border-radius: 14px;
    font-size: 16px;
    color: var(--text-primary);
    font-family: 'Space Grotesk', sans-serif;
    transition: all 0.3s ease;
}

.search-input:focus {
    outline: none;
    border-color: var(--neon-cyan);
    background: var(--bg-darker);
    box-shadow: var(--glow-cyan);
}

.search-input::placeholder {
    color: var(--text-muted);
}

/* ============================================
   EMPTY STATE
   ============================================ */

.empty-state {
    text-align: center;
    padding: 100px 24px;
}

.empty-state-icon {
    width: 120px;
    height: 120px;
    background: var(--bg-elevated);
    border: 2px solid var(--border-neon);
    border-radius: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 32px;
    font-size: 56px;
    color: var(--neon-cyan);
    box-shadow: var(--glow-cyan);
}

.empty-state h3 {
    font-size: 24px;
    font-weight: 600;
    margin-bottom: 16px;
    color: var(--text-glow);
}

.empty-state p {
    font-size: 16px;
    color: var(--text-secondary);
    margin-bottom: 32px;
}

/* ============================================
   BACK LINK
   ============================================ */

.back-link {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    color: var(--text-secondary);
    text-decoration: none;
    margin-bottom: 28px;
    padding: 10px 0;
    transition: all 0.3s ease;
    font-weight: 500;
}

.back-link:hover {
    color: var(--neon-cyan);
    text-shadow: var(--glow-cyan);
    transform: translateX(-4px);
}

/* ============================================
   LESSON/COURSE DETAIL CARD
   ============================================ */

.lesson-detail-card,
.course-detail-card {
    background: var(--bg-glass);
    backdrop-filter: blur(20px);
    padding: 48px;
    border-radius: 24px;
    border: 1px solid var(--border-neon);
    margin-bottom: 40px;
    box-shadow: var(--shadow-elevated), var(--glow-cyan);
}

.lesson-detail-card h2,
.course-detail-card h2 {
    font-size: 36px;
    font-weight: 700;
    margin-bottom: 20px;
    color: var(--text-glow);
}

.lesson-detail-card p,
.course-detail-card p {
    color: var(--text-secondary);
    line-height: 1.8;
    font-size: 16px;
}

/* ============================================
   PROGRESS INFO
   ============================================ */

.progress-info {
    display: flex;
    align-items: center;
    gap: 20px;
    margin-top: 20px;
    font-size: 14px;
    color: var(--text-secondary);
}

/* ============================================
   ACTION BUTTONS GROUP
   ============================================ */

.action-buttons {
    display: flex;
    gap: 10px;
}

/* ============================================
   RESPONSIVE - TELJES MOBILOPTIMALIZÁLÁS
   ============================================ */

/* Large Desktop (1400px+) */
@media (min-width: 1400px) {
    .container {
        max-width: 1600px;
    }
}

/* Desktop (1200px - 1399px) */
@media (max-width: 1399px) {
    .container {
        max-width: 1200px;
    }
    
    .hero h1 {
        font-size: 72px;
    }
}

/* Laptop (992px - 1199px) */
@media (max-width: 1199px) {
    .lesson-container {
        grid-template-columns: 1fr;
    }

    .lesson-sidebar {
        position: static;
        max-width: 100%;
    }
    
    .course-grid {
        grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    }
}

/* Tablet Landscape (968px - 991px) */
@media (max-width: 991px) {
    .navbar .container {
        padding: 16px 24px;
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .admin-header {
        flex-direction: column;
        gap: 20px;
        align-items: flex-start;
    }
    
    .admin-header h1 {
        font-size: 36px;
    }
}

/* Tablet Portrait & Mobile Landscape (768px - 967px) */
@media (max-width: 968px) {
    /* Navbar Mobile Menu */
    .nav-toggle {
        display: block;
    }
    
    .nav-menu {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: #000000;
        border-top: 2px solid #FFD700;
        flex-direction: column;
        gap: 0;
        padding: 20px 0;
        box-shadow: 0 8px 32px rgba(255, 215, 0, 0.3);
        z-index: 999;
    }
    
    .nav-menu.active {
        display: flex;
    }
    
    .nav-menu > li {
        width: 100%;
    }
    
    .nav-menu a,
    .nav-menu .dropbtn {
        width: 100%;
        text-align: left;
        padding: 16px 32px;
        border-radius: 0;
        border-left: 4px solid transparent;
    }
    
    .nav-menu a:hover,
    .nav-menu .dropbtn:hover {
        border-left-color: #FFD700;
        transform: translateX(8px);
        border-right: none;
        border-top: none;
        border-bottom: none;
    }
    
    .dropdown::before {
        display: none;
    }
    
    .dropdown-content {
        position: static;
        border: none;
        border-left: 4px solid #FFD700;
        margin: 0;
        margin-left: 20px;
        box-shadow: none;
        border-radius: 0;
    }
    
    .dropdown-content a {
        padding-left: 48px;
        min-height: auto;
    }
    
    /* Container */
    .container {
        padding: 0 20px;
    }
    
    /* Hero */
    .hero {
        padding: 100px 0 80px;
    }
    
    .hero h1 {
        font-size: 48px;
    }
    
    .hero p {
        font-size: 18px;
    }
    
    .hero-buttons {
        flex-direction: column;
        width: 100%;
        max-width: 400px;
        margin: 0 auto;
    }
    
    .hero-buttons .btn {
        width: 100%;
        justify-content: center;
    }
    
    /* Grids */
    .course-grid,
    .category-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    /* Forms */
    .form-container,
    .quiz-container {
        padding: 32px 24px;
        margin: 32px auto;
    }
    
    .form-container h2,
    .quiz-container h2 {
        font-size: 28px;
    }
    
    /* Search Bar */
    .search-bar {
        flex-direction: column;
    }
    
    .search-input,
    .search-bar .form-control,
    .search-bar .btn {
        width: 100%;
    }
    
    /* Stats Grid */
    .stats-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }
    
    /* Data Table - Horizontal Scroll */
    .data-table {
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }
    
    .data-table table {
        min-width: 800px;
    }
    
    .data-table th,
    .data-table td {
        padding: 12px 16px;
        font-size: 13px;
    }
    
    /* Admin Tabs */
    .admin-tabs {
        flex-wrap: wrap;
        justify-content: center;
    }
    
    .admin-tab {
        padding: 10px 20px;
        font-size: 13px;
    }
    
    /* Lesson Content */
    .lesson-content-area {
        padding: 24px;
    }
    
    .lesson-sidebar {
        padding: 20px;
    }
    
    /* Footer */
    .footer-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    /* Page Title */
    .page-title {
        font-size: 36px;
    }
}

/* Mobile (576px - 767px) */
@media (max-width: 767px) {
    /* Navbar Brand */
    .nav-brand a {
        font-size: 22px;
    }
    
    .nav-brand i {
        font-size: 28px;
    }
    
    /* Hero */
    .hero h1 {
        font-size: 40px;
        line-height: 1.2;
    }
    
    .hero p {
        font-size: 16px;
    }
    
    /* Cards */
    .category-card,
    .course-card .course-content,
    .lesson-detail-card,
    .course-detail-card {
        padding: 24px;
    }
    
    .category-card .icon {
        font-size: 48px;
    }
    
    .category-card h3,
    .course-title {
        font-size: 20px;
    }
    
    /* Buttons */
    .btn {
        padding: 12px 24px;
        font-size: 14px;
    }
    
    .btn-small {
        padding: 8px 16px;
        font-size: 13px;
    }
    
    /* Action Buttons Stack */
    .action-buttons {
        flex-wrap: wrap;
    }
    
    /* Stats Cards */
    .stat-card {
        padding: 24px;
    }
    
    .stat-card h2 {
        font-size: 48px;
    }
    
    /* Quiz */
    .quiz-score {
        font-size: 72px;
    }
    
    .quiz-question h3 {
        font-size: 20px;
    }
    
    /* Comments */
    .comment-reply {
        margin-left: 24px;
    }
    
    /* Empty State */
    .empty-state {
        padding: 60px 16px;
    }
    
    .empty-state-icon {
        width: 100px;
        height: 100px;
        font-size: 48px;
    }
    
    /* Page Title */
    .page-title {
        font-size: 32px;
        margin-bottom: 28px;
    }
}

/* Small Mobile (481px - 575px) */
@media (max-width: 575px) {
    /* Container */
    .container {
        padding: 0 16px;
    }
    
    /* Navbar */
    .navbar .container {
        padding: 14px 16px;
    }
    
    .nav-brand a {
        font-size: 20px;
    }
    
    /* Hero */
    .hero {
        padding: 80px 0 60px;
    }
    
    .hero h1 {
        font-size: 36px;
    }
    
    .hero p {
        font-size: 15px;
        margin-bottom: 32px;
    }
    
    /* Forms & Search */
    .form-container,
    .quiz-container,
    .search-container {
        padding: 24px 20px;
        border-radius: 16px;
    }
    
    .form-control,
    .search-input {
        padding: 12px 16px;
        font-size: 15px;
    }
    
    /* Course Meta - Stack */
    .course-meta {
        flex-direction: column;
        gap: 12px;
        align-items: flex-start;
    }
    
    /* Lesson Item */
    .lesson-item {
        padding: 12px;
        font-size: 14px;
    }
    
    /* Stats Grid - Full Width */
    .stat-card h2 {
        font-size: 40px;
    }
    
    .stat-card p {
        font-size: 13px;
    }
    
    /* Admin Header */
    .admin-header h1 {
        font-size: 28px;
    }
    
    /* Quiz Result */
    .quiz-result {
        padding: 40px 20px;
    }
    
    .quiz-score {
        font-size: 64px;
    }
    
    .quiz-result h2 {
        font-size: 28px;
    }
    
    /* Flash Messages */
    .flash-message {
        padding: 14px 18px;
        font-size: 13px;
    }
    
    /* Badges */
    .badge {
        padding: 4px 8px;
        font-size: 10px;
    }
    
    .difficulty {
        padding: 5px 10px;
        font-size: 11px;
    }
    
    /* Footer */
    .footer {
        padding: 60px 0 32px;
    }
    
    .footer-content {
        gap: 32px;
    }
    
    .footer-section h3,
    .footer-section h4 {
        font-size: 16px;
    }
    
    .footer-section a {
        font-size: 13px;
    }
}

/* Extra Small Mobile (320px - 480px) */
@media (max-width: 480px) {
    /* Typography Scale Down */
    .hero h1 {
        font-size: 32px;
    }
    
    .page-title {
        font-size: 28px;
    }
    
    .course-title {
        font-size: 18px;
    }
    
    .category-card h3 {
        font-size: 18px;
    }
    
    /* Compact Spacing */
    .category-card,
    .course-card .course-content {
        padding: 20px;
    }
    
    .lesson-content-area,
    .lesson-sidebar {
        padding: 20px;
    }
    
    /* Buttons - Full Width on Tiny Screens */
    .btn {
        width: 100%;
        justify-content: center;
    }
    
    .action-buttons .btn {
        width: auto;
        flex: 1;
    }
    
    /* Nav Brand Compact */
    .nav-brand a {
        font-size: 18px;
        gap: 8px;
    }
    
    .nav-brand i {
        font-size: 24px;
    }
    
    /* Quiz Score */
    .quiz-score {
        font-size: 56px;
    }
    
    /* Empty State */
    .empty-state-icon {
        width: 80px;
        height: 80px;
        font-size: 40px;
    }
    
    .empty-state h3 {
        font-size: 20px;
    }
    
    .empty-state p {
        font-size: 14px;
    }
    
    /* Data Table - More Compact */
    .data-table th,
    .data-table td {
        padding: 10px 12px;
        font-size: 12px;
    }
    
    /* Stat Cards */
    .stat-card {
        padding: 20px;
    }
    
    .stat-card h2 {
        font-size: 36px;
    }
    
    /* Comment Reply */
    .comment-reply {
        margin-left: 16px;
    }
    
    /* Search/Form */
    .search-container,
    .form-container {
        padding: 20px 16px;
    }
    
    /* Main Content */
    .main-content {
        padding: 32px 0;
        margin-top: 75px;
    }
}

/* Landscape Orientation Fixes */
@media (max-height: 600px) and (orientation: landscape) {
    .hero {
        padding: 60px 0 50px;
    }
    
    .hero h1 {
        font-size: 36px;
        margin-bottom: 16px;
    }
    
    .hero p {
        margin-bottom: 24px;
    }
    
    .navbar .container {
        padding: 12px 24px;
    }
}

/* Touch Device Optimizations */
@media (hover: none) and (pointer: coarse) {
    /* Larger tap targets */
    .btn,
    .nav-menu a,
    .nav-menu .dropbtn,
    .lesson-item,
    .quiz-option {
        min-height: 48px;
    }
    
    /* Remove hover effects that don't work on touch */
    .course-card:hover,
    .category-card:hover,
    .btn:hover {
        transform: none;
    }
    
    /* Active states for touch */
    .btn:active,
    .course-card:active,
    .category-card:active {
        transform: scale(0.98);
        opacity: 0.9;
    }
}

/* High DPI / Retina Displays */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
    body {
        -webkit-font-smoothing: antialiased;
        -moz-osx-font-smoothing: grayscale;
    }
}

/* Print Styles */
@media print {
    .navbar,
    .footer,
    .btn,
    .search-container,
    .admin-tabs,
    .action-buttons {
        display: none;
    }
    
    .main-content {
        margin-top: 0;
    }
    
    body {
        background: white;
        color: black;
    }
    
    .course-card,
    .category-card,
    .lesson-detail-card {
        border: 1px solid #000;
        page-break-inside: avoid;
    }
}

/* ============================================
   ANIMATIONS & MICRO-INTERACTIONS
   ============================================ */

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.category-card,
.course-card,
.stat-card {
    animation: fadeIn 0.6s ease backwards;
}

.category-card:nth-child(1) { animation-delay: 0.1s; }
.category-card:nth-child(2) { animation-delay: 0.2s; }
.category-card:nth-child(3) { animation-delay: 0.3s; }
.category-card:nth-child(4) { animation-delay: 0.4s; }

.course-card:nth-child(1) { animation-delay: 0.1s; }
.course-card:nth-child(2) { animation-delay: 0.15s; }
.course-card:nth-child(3) { animation-delay: 0.2s; }
.course-card:nth-child(4) { animation-delay: 0.25s; }
.course-card:nth-child(5) { animation-delay: 0.3s; }
.course-card:nth-child(6) { animation-delay: 0.35s; }