/* CSS Variables for Advanced Theming */
        :root {
            --primary-color: #667eea;
            --secondary-color: #764ba2;
            --accent-color: #f093fb;
            --bg-primary: #ffffff;
            --bg-secondary: #f8fafc;
            --bg-tertiary: #f1f5f9;
            --text-primary: #1e293b;
            --text-secondary: #64748b;
            --text-muted: #94a3b8;
            --border-color: #e2e8f0;
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.05);
            --shadow-md: 0 4px 20px rgba(0,0,0,0.08);
            --shadow-lg: 0 10px 40px rgba(0,0,0,0.12);
            --shadow-xl: 0 20px 60px rgba(0,0,0,0.15);
            --gradient-primary: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
            --gradient-hero: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 50%, var(--accent-color) 100%);
            --hero-text-color: #ffffff;
        }
        
        [data-theme="emerald"] {
            --primary-color: #10b981;
            --secondary-color: #059669;
            --accent-color: #34d399;
        }
        
        [data-theme="ocean"] {
            --primary-color: #0ea5e9;
            --secondary-color: #0284c7;
            --accent-color: #38bdf8;
        }
        
        [data-theme="sunset"] {
            --primary-color: #f59e0b;
            --secondary-color: #d97706;
            --accent-color: #fbbf24;
        }
        
        [data-theme="rose"] {
            --primary-color: #f43f5e;
            --secondary-color: #e11d48;
            --accent-color: #fb7185;
        }
        
        [data-theme="violet"] {
            --primary-color: #8b5cf6;
            --secondary-color: #7c3aed;
            --accent-color: #a78bfa;
        }
        
        [data-theme="indigo"] {
            --primary-color: #6366f1;
            --secondary-color: #4f46e5;
            --accent-color: #818cf8;
        }
        
        [data-theme="teal"] {
            --primary-color: #14b8a6;
            --secondary-color: #0d9488;
            --accent-color: #2dd4bf;
        }
        
        [data-theme="pink"] {
            --primary-color: #ec4899;
            --secondary-color: #db2777;
            --accent-color: #f472b6;
        }
        
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        
        body {
            font-family: 'Poppins', sans-serif;
            background: var(--bg-secondary);
            color: var(--text-primary);
            line-height: 1.6;
            overflow-x: hidden;
            transition: background 0.3s ease;
        }
        
        /* Advanced Theme Selector */
        .theme-selector {
            position: fixed;
            top: 20px;
            right: 20px;
            z-index: 9999;
            background: var(--bg-primary);
            border-radius: 25px;
            padding: 25px;
            box-shadow: var(--shadow-xl);
            transition: all 0.3s;
            border: 2px solid var(--border-color);
            min-width: 320px;
        }
        
        .theme-selector-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 20px;
            padding-bottom: 15px;
            border-bottom: 2px solid var(--bg-secondary);
        }
        
        .theme-selector-title {
            font-weight: 700;
            font-size: 1.1rem;
            color: var(--text-primary);
            display: flex;
            align-items: center;
            gap: 10px;
        }
        
        .theme-selector-title i {
            color: var(--primary-color);
            font-size: 1.3rem;
        }
        
        .theme-close-btn {
            background: none;
            border: none;
            font-size: 1.5rem;
            color: var(--text-muted);
            cursor: pointer;
            transition: all 0.3s;
            width: 30px;
            height: 30px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 8px;
        }
        
        .theme-close-btn:hover {
            background: var(--bg-secondary);
            color: var(--text-primary);
        }
        
        .theme-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 15px;
            margin-bottom: 20px;
        }
        
        .theme-option {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 8px;
            cursor: pointer;
            transition: all 0.3s;
            padding: 10px;
            border-radius: 15px;
        }
        
        .theme-option:hover {
            background: var(--bg-secondary);
        }
        
        .theme-btn {
            width: 60px;
            height: 60px;
            border-radius: 15px;
            border: 3px solid transparent;
            cursor: pointer;
            transition: all 0.3s;
            position: relative;
            overflow: hidden;
            box-shadow: var(--shadow-md);
        }
        
        .theme-btn:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-lg);
        }
        
        .theme-btn.active {
            border-color: var(--text-primary);
            box-shadow: 0 0 0 3px var(--bg-tertiary);
            transform: scale(1.05);
        }
        
        .theme-btn::before {
            content: '✓';
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            color: white;
            font-size: 1.8rem;
            font-weight: bold;
            opacity: 0;
            transition: opacity 0.3s;
            text-shadow: 0 2px 4px rgba(0,0,0,0.3);
        }
        
        .theme-btn.active::before {
            opacity: 1;
        }
        
        .theme-label {
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--text-secondary);
            text-align: center;
        }
        
        .theme-purple { background: linear-gradient(135deg, #667eea, #764ba2); }
        .theme-emerald { background: linear-gradient(135deg, #10b981, #059669); }
        .theme-ocean { background: linear-gradient(135deg, #0ea5e9, #0284c7); }
        .theme-sunset { background: linear-gradient(135deg, #f59e0b, #d97706); }
        .theme-rose { background: linear-gradient(135deg, #f43f5e, #e11d48); }
        .theme-violet { background: linear-gradient(135deg, #8b5cf6, #7c3aed); }
        .theme-indigo { background: linear-gradient(135deg, #6366f1, #4f46e5); }
        .theme-teal { background: linear-gradient(135deg, #14b8a6, #0d9488); }
        .theme-pink { background: linear-gradient(135deg, #ec4899, #db2777); }
        
        .theme-preview {
            padding: 15px;
            background: var(--bg-secondary);
            border-radius: 15px;
        }
        
        .theme-preview-label {
            font-size: 0.8rem;
            color: var(--text-muted);
            margin-bottom: 10px;
        }
        
        .theme-preview-box {
            height: 60px;
            border-radius: 12px;
            background: var(--gradient-primary);
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            font-weight: 600;
            transition: all 0.5s ease;
        }
        
        /* Animated Background */
        .animated-bg {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            z-index: 0;
            overflow: hidden;
            pointer-events: none;
        }
        
        .bg-shape {
            position: absolute;
            border-radius: 50%;
            background: var(--gradient-primary);
            opacity: 0.03;
            animation: float 20s infinite;
            transition: background 0.5s ease;
        }
        
        .bg-shape:nth-child(1) {
            width: 500px;
            height: 500px;
            top: -200px;
            left: -100px;
        }
        
        .bg-shape:nth-child(2) {
            width: 400px;
            height: 400px;
            bottom: -150px;
            right: -150px;
        }
        
        .bg-shape:nth-child(3) {
            width: 300px;
            height: 300px;
            top: 50%;
            right: 10%;
        }
        
        @keyframes float {
            0%, 100% { transform: translateY(0) rotate(0deg); }
            25% { transform: translateY(-20px) rotate(5deg); }
            50% { transform: translateY(-40px) rotate(-5deg); }
            75% { transform: translateY(-20px) rotate(5deg); }
        }
        
        /* Main Container */
        .main-container {
            position: relative;
            z-index: 1;
            max-width: 1400px;
            margin: 0 auto;
            padding: 30px 20px;
        }
        
        /* Hero Section - YENI YAPILANMA */
        .hero-section {
            background: var(--gradient-hero);
            border-radius: 30px;
            padding: 50px;
            position: relative;
            overflow: hidden;
            margin-bottom: 30px;
            box-shadow: var(--shadow-xl);
            transition: background 0.5s ease;
        }
        
        .hero-pattern {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            opacity: 0.1;
            background-image: 
                repeating-linear-gradient(45deg, transparent, transparent 35px, rgba(255,255,255,.05) 35px, rgba(255,255,255,.05) 70px);
        }
        
        .hero-main {
            position: relative;
            z-index: 2;
            display: grid;
            grid-template-columns: 220px 1fr auto;
            gap: 40px;
            align-items: start;
            color: var(--hero-text-color);
            margin-bottom: 30px;
            transition: color 0.3s ease;
        }
        
        .hero-avatar-wrapper {
            position: relative;
        }
        
        .avatar-main {
            width: 220px;
            height: 220px;
            border-radius: 30px;
            overflow: hidden;
            border: 6px solid rgba(255,255,255,0.3);
            box-shadow: 0 20px 60px rgba(0,0,0,0.3);
            transition: transform 0.5s;
        }
        
        .avatar-main:hover {
            /*transform: scale(1.05) rotate(0.4deg);*/
        }
        
        .avatar-main img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        
        .avatar-badge {
            position: absolute;
            top: -10px;
            right: -10px;
            width: 60px;
            height: 60px;
            background: white;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 5px 20px rgba(0,0,0,0.2);
            animation: pulse 2s infinite;
        }
        
        .avatar-badge-dr {
            position: absolute;
            top: -10px;
            right: -10px;
            width: 60px;
            height: 60px;
            background: white;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 5px 20px rgba(0,0,0,0.2);
            animation: pulse 2s infinite;
        }
        
        .avatar-badge i {
            font-size: 1.8rem;
            background: #565656;
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            transition: background 0.5s ease;
        }
        .avatar-badge-dr i {
            font-size: 1.8rem;
            background: green;
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            transition: background 0.5s ease;
        }
        
        @keyframes pulse {
            0%, 100% { transform: scale(1); }
            50% { transform: scale(1.1); }
        }
        
        .hero-info h1 {
            font-family: 'Playfair Display', serif;
            font-size: 3rem;
            font-weight: 900;
            margin-bottom: 12px;
            text-shadow: 0 2px 10px rgba(0,0,0,0.2);
        }
        
        .hero-subtitle {
            font-size: 1.3rem;
            font-weight: 300;
            margin-bottom: 20px;
            opacity: 0.95;
        }
        
        .hero-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-bottom: 20px;
        }
        
        .hero-tag {
            padding: 8px 18px;
            background: rgba(255,255,255,0.2);
            backdrop-filter: blur(10px);
            border-radius: 20px;
            font-size: 0.85rem;
            font-weight: 500;
            border: 1px solid rgba(255,255,255,0.3);
            transition: all 0.3s;
        }
        
        .hero-tag:hover {
            background: rgba(255,255,255,0.3);
            transform: translateY(-2px);
        }
        
        .hero-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 25px;
            font-size: 0.9rem;
            opacity: 0.9;
        }
        
        .hero-meta-item {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        
        /* Butonlar - ÜST SAĞ DIKEY */
        .hero-actions {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        
        .action-btn {
            padding: 14px 30px;
            border-radius: 15px;
            font-weight: 600;
            font-size: 0.95rem;
            border: none;
            cursor: pointer;
            transition: all 0.3s;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 10px;
            text-decoration: none;
            white-space: nowrap;
            min-width: 200px;
        }
        
        .btn-primary-action {
            background: white;
            color: var(--primary-color);
            box-shadow: 0 5px 20px rgba(0,0,0,0.2);
        }
        
        .btn-secondary-action {
            background: rgba(255,255,255,0.2);
            color: white;
            border: 2px solid rgba(255,255,255,0.3);
        }
        
        .action-btn:hover {
            transform: translateY(-3px);
            box-shadow: 0 8px 30px rgba(0,0,0,0.3);
        }
        
        /* İstatistikler - HERO ALTINDA YAN YANA */
        .hero-stats {
            position: relative;
            z-index: 2;
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        
        .hero-stat {
            background: rgba(255,255,255,0.15);
            backdrop-filter: blur(10px);
            border-radius: 20px;
            padding: 25px;
            text-align: center;
            border: 1px solid rgba(255,255,255,0.2);
            transition: all 0.3s;
        }
        
        .hero-stat:hover {
            background: rgba(255,255,255,0.25);
            transform: translateY(-5px);
        }
        
        .hero-stat-value {
            font-size: 2.2rem;
            font-weight: 800;
            display: block;
            margin-bottom: 8px;
        }
        
        .hero-stat-label {
            font-size: 0.9rem;
            opacity: 0.9;
            font-weight: 500;
        }
        
        /* Content Grid */
        .content-grid {
            display: grid;
            grid-template-columns: 350px 1fr;
            gap: 30px;
            margin-bottom: 30px;
        }
        
        /* Sidebar */
        .sidebar {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }
        
        .sidebar-card {
            background: var(--bg-primary);
            border-radius: 25px;
            padding: 30px;
            box-shadow: var(--shadow-md);
            transition: all 0.3s;
        }
        
        .sidebar-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-5px);
        }
        
        .card-title {
            font-size: 1.3rem;
            font-weight: 700;
            margin-bottom: 20px;
            display: flex;
            align-items: center;
            gap: 12px;
            color: var(--text-primary);
        }
        
        .card-title i {
            color: var(--primary-color);
            font-size: 1.5rem;
            transition: color 0.5s ease;
        }
        
        /* About */
        .about-text {
            color: var(--text-secondary);
            line-height: 1.8;
            margin-bottom: 20px;
        }
        
        .about-highlights {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        
        .highlight-item {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 12px;
            background: var(--bg-secondary);
            border-radius: 12px;
            transition: all 0.3s;
        }
        
        .highlight-item:hover {
            background: var(--bg-tertiary);
            transform: translateX(5px);
        }
        
        .highlight-icon {
            width: 40px;
            height: 40px;
            background: var(--gradient-primary);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            flex-shrink: 0;
            transition: background 0.5s ease;
        }
        
        .highlight-text {
            font-size: 0.95rem;
            color: var(--text-secondary);
            font-weight: 500;
        }
        
        /* Diller & Kitaplar - YENİ */
        .language-list, .book-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        
        .language-item, .book-item {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 12px 15px;
            background: var(--bg-secondary);
            border-radius: 12px;
            transition: all 0.3s;
        }
        
        .language-item:hover, .book-item:hover {
            background: var(--bg-tertiary);
            transform: translateX(5px);
        }
        
        .language-name, .book-name {
            font-weight: 600;
            color: var(--text-primary);
            font-size: 0.95rem;
        }
        
        .language-level {
            padding: 4px 12px;
            background: var(--gradient-primary);
            color: white;
            border-radius: 15px;
            font-size: 0.75rem;
            font-weight: 600;
            transition: background 0.5s ease;
        }
        
        .book-year {
            color: var(--text-muted);
            font-size: 0.85rem;
            font-weight: 500;
        }
        
        /* Contact */
        .contact-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        
        .contact-item {
            display: flex;
            align-items: center;
            gap: 15px;
            padding: 15px;
            background: var(--bg-secondary);
            border-radius: 15px;
            transition: all 0.3s;
            cursor: pointer;
        }
        
        .contact-item:hover {
            background: var(--gradient-primary);
            color: white;
            /*transform: translateX(5px);*/
        }
        
        .contact-icon {
            width: 50px;
            height: 50px;
            background: var(--gradient-primary);
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            font-size: 1.3rem;
            flex-shrink: 0;
            transition: all 0.5s;
        }
        
        .contact-item:hover .contact-icon {
            background: white;
            color: var(--primary-color);
        }
        
        .contact-info {
            flex: 1;
        }
        
        .contact-label {
            font-size: 0.8rem;
            opacity: 0.7;
            margin-bottom: 3px;
        }
        
        .contact-value {
            font-weight: 600;
            font-size: 0.85rem;
        }
        
        /* Social Links */
        .social-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 10px;
        }
        
        .social-btn {
            padding: 12px;
            border-radius: 12px;
            text-align: center;
            text-decoration: none;
            font-weight: 600;
            font-size: 0.9rem;
            transition: all 0.3s;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
        }
        
        .social-btn:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-md);
        }
        
        .social-linkedin { background: #0077b5; color: white; }
        .social-twitter { background: #1da1f2; color: white; }
        .social-instagram { background: linear-gradient(135deg, #f09433 0%,#e6683c 25%,#dc2743 50%,#cc2366 75%,#bc1888 100%); color: white; }
        .social-facebook { background: #1877f2; color: white; }
        
        /* PDF Listesi - YENİ */
        .pdf-list {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        
        .pdf-item {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 12px;
            background: var(--bg-secondary);
            border-radius: 12px;
            transition: all 0.3s;
            cursor: pointer;
            border: 2px solid transparent;
        }
        
        .pdf-item:hover {
            background: var(--bg-tertiary);
            border-color: var(--primary-color);
            transform: translateX(5px);
        }
        
        .pdf-icon {
            width: 40px;
            height: 40px;
            background: #dc2626;
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            font-size: 1.2rem;
            flex-shrink: 0;
        }
        
        .pdf-info {
            flex: 1;
        }
        
        .pdf-title {
            font-weight: 600;
            color: var(--text-primary);
            font-size: 0.9rem;
            margin-bottom: 3px;
        }
        
        .pdf-meta {
            font-size: 0.75rem;
            color: var(--text-muted);
        }
        
        /* Main Content */
        .main-content {
            display: flex;
            flex-direction: column;
            gap: 25px;
        }
        
        .content-card {
            background: var(--bg-primary);
            border-radius: 25px;
            padding: 40px;
            box-shadow: var(--shadow-md);
            transition: all 0.3s;
        }
        
        .content-card:hover {
            box-shadow: var(--shadow-lg);
        }
        
        .section-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 30px;
            padding-bottom: 20px;
            border-bottom: 3px solid var(--bg-secondary);
        }
        
        .section-title {
            font-size: 2rem;
            font-weight: 800;
            display: flex;
            align-items: center;
            gap: 15px;
            color: var(--text-primary);
        }
        
        .section-title i {
            color: var(--primary-color);
            font-size: 2rem;
            transition: color 0.5s ease;
        }
        
        .section-action {
            color: var(--primary-color);
            text-decoration: none;
            font-weight: 600;
            display: flex;
            align-items: center;
            gap: 8px;
            transition: all 0.3s;
        }
        
        .section-action:hover {
            gap: 12px;
        }
        
        /* Eğitimler */
        .courses-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
            gap: 20px;
        }
        
        .course-card {
            background: var(--bg-secondary);
            border-radius: 20px;
            overflow: hidden;
            transition: all 0.3s;
            border: 2px solid transparent;
            cursor: pointer;
        }
        
        .course-card:hover {
            border-color: var(--primary-color);
            transform: translateY(-5px);
            box-shadow: var(--shadow-lg);
        }
        
        .course-header {
            background: var(--gradient-primary);
            color: var(--hero-text-color);
            padding: 25px;
            position: relative;
            transition: background 0.5s ease, color 0.3s ease;
        }
        
        .course-badge {
            position: absolute;
            top: 15px;
            right: 15px;
            padding: 6px 15px;
            background: rgba(255,255,255,0.3);
            backdrop-filter: blur(10px);
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 600;
            border: 1px solid rgba(255,255,255,0.3);
        }
        
        .course-icon {
            width: 60px;
            height: 60px;
            background: rgba(255,255,255,0.2);
            border-radius: 15px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 2rem;
            margin-bottom: 15px;
        }
        
        .course-title {
            font-size: 1.3rem;
            font-weight: 700;
            margin-bottom: 8px;
        }
        
        .course-subtitle {
            font-size: 0.9rem;
            opacity: 0.9;
        }
        
        .course-body {
            padding: 25px;
        }
        
        .course-details {
            display: flex;
            flex-direction: column;
            gap: 12px;
            margin-bottom: 20px;
        }
        
        .course-detail-item {
            display: flex;
            align-items: center;
            gap: 10px;
            color: var(--text-secondary);
            font-size: 0.95rem;
        }
        
        .course-detail-item i {
            color: var(--primary-color);
            width: 20px;
        }
        
        .course-footer {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding-top: 20px;
            border-top: 2px solid var(--bg-tertiary);
        }
        
        .course-price {
            font-size: 2rem;
            font-weight: 800;
            color: var(--primary-color);
        }
        
        .course-price-label {
            font-size: 0.85rem;
            color: var(--text-muted);
            font-weight: 500;
        }
        
        .course-btn {
            padding: 12px 25px;
            background: var(--gradient-primary);
            color: white;
            border-radius: 12px;
            border: none;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s;
        }
        
        .course-btn:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
        }
        
        /* Galeri - YENİ */
        .gallery-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            gap: 20px;
        }
        
        .gallery-item {
            position: relative;
            border-radius: 20px;
            overflow: hidden;
            aspect-ratio: 1;
            cursor: pointer;
            transition: all 0.3s;
        }
        
        .gallery-item:hover {
            transform: scale(1.05);
            box-shadow: var(--shadow-lg);
        }
        
        .gallery-item img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.3s;
        }
        
        .gallery-item:hover img {
            transform: scale(1.1);
        }
        
        .gallery-overlay {
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            padding: 20px;
            background: linear-gradient(to top, rgba(0,0,0,0.8), transparent);
            color: white;
            transform: translateY(100%);
            transition: transform 0.3s;
        }
        
        .gallery-item:hover .gallery-overlay {
            transform: translateY(0);
        }
        
        .gallery-title {
            font-weight: 600;
            font-size: 1.1rem;
            margin-bottom: 5px;
        }
        
        .gallery-description {
            font-size: 0.85rem;
            opacity: 0.9;
        }
        
        /* Certificates */
        .certificates-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
            gap: 25px;
        }
        
        .certificate-card {
            background: var(--bg-secondary);
            border-radius: 25px;
            padding: 30px;
            transition: all 0.4s;
            border: 3px solid transparent;
            cursor: pointer;
            position: relative;
            overflow: hidden;
        }
        
        .certificate-card::before {
            content: '';
            position: absolute;
            top: -50%;
            left: -50%;
            width: 200%;
            height: 200%;
            background: conic-gradient(
                from 0deg at 50% 50%,
                var(--primary-color),
                var(--secondary-color),
                var(--accent-color),
                var(--primary-color)
            );
            opacity: 0;
            transition: opacity 0.5s;
            animation: rotate 4s linear infinite;
        }
        
        @keyframes rotate {
            100% { transform: rotate(360deg); }
        }
        
        .certificate-card:hover::before {
            opacity: 0.1;
        }
        
        .certificate-card:hover {
            border-color: var(--primary-color);
            transform: translateY(-8px) scale(1.02);
            box-shadow: var(--shadow-xl);
        }
        
        .certificate-content {
            position: relative;
            z-index: 1;
        }
        
        .certificate-icon {
            width: 80px;
            height: 80px;
            background: var(--gradient-primary);
            border-radius: 20px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            font-size: 2.5rem;
            margin-bottom: 20px;
            transition: all 0.4s;
        }
        
        .certificate-card:hover .certificate-icon {
            transform: rotateY(180deg) scale(1.1);
        }
        
        .certificate-name {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 10px;
            line-height: 1.4;
        }
        
        .certificate-org {
            color: var(--text-secondary);
            font-size: 0.95rem;
            margin-bottom: 10px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        
        .certificate-org i {
            color: var(--primary-color);
        }
        
        .certificate-date {
            display: inline-block;
            padding: 6px 15px;
            background: var(--gradient-primary);
            color: white;
            border-radius: 20px;
            font-weight: 600;
            font-size: 0.85rem;
        }
        
        .certificate-badge {
            position: absolute;
            top: 20px;
            right: 20px;
            width: 50px;
            height: 50px;
            background: var(--gradient-primary);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            font-size: 1.2rem;
            box-shadow: var(--shadow-md);
            z-index: 2;
        }
        
        /* Reviews */
        .reviews-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
            gap: 20px;
        }
        
        .review-card {
            background: var(--bg-secondary);
            border-radius: 20px;
            padding: 30px;
            transition: all 0.3s;
            position: relative;
            overflow: hidden;
        }
        
        .review-card::before {
            content: '"';
            position: absolute;
            top: 10px;
            left: 20px;
            font-size: 8rem;
            font-family: 'Playfair Display', serif;
            color: var(--primary-color);
            opacity: 0.05;
            line-height: 1;
        }
        
        .review-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-5px);
        }
        
        .review-header {
            display: flex;
            justify-content: space-between;
            align-items: start;
            margin-bottom: 20px;
            position: relative;
            z-index: 1;
        }
        
        .reviewer-info {
            display: flex;
            gap: 15px;
            align-items: center;
        }
        
        .reviewer-avatar {
            width: 55px;
            height: 55px;
            border-radius: 50%;
            background: var(--gradient-primary);
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            font-weight: 700;
            font-size: 1.3rem;
            transition: background 0.5s ease;
        }
        
        .reviewer-name {
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 3px;
        }
        
        .reviewer-date {
            font-size: 0.85rem;
            color: var(--text-muted);
        }
        
        .review-stars {
            display: flex;
            gap: 3px;
        }
        
        .star {
            color: #fbbf24;
            font-size: 1.2rem;
        }
        
        .review-text {
            color: var(--text-secondary);
            line-height: 1.8;
            position: relative;
            z-index: 1;
        }
        
        /* Review Button */
        .review-action-btn {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 15px 30px;
            background: var(--gradient-primary);
            color: white;
            border-radius: 15px;
            border: none;
            font-weight: 600;
            font-size: 1rem;
            cursor: pointer;
            transition: all 0.3s;
            margin-top: 20px;
        }
        
        .review-action-btn:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-lg);
        }
        
        /* Modal - DEĞERLENDİRME FORMU */
        .modal {
            display: none;
            position: fixed;
            z-index: 10000;
            left: 0;
            top: 0;
            width: 100%;
            height: 100%;
            background-color: rgba(0,0,0,0.7);
            animation: fadeIn 0.3s;
        }
        
        @keyframes fadeIn {
            from { opacity: 0; }
            to { opacity: 1; }
        }
        
        .modal.show {
            display: flex;
            align-items: center;
            justify-content: center;
        }
        
        .modal-content {
            background: var(--bg-primary);
            border-radius: 25px;
            padding: 40px;
            max-width: 600px;
            width: 90%;
            max-height: 90vh;
            overflow-y: auto;
            position: relative;
            animation: slideUp 0.4s;
        }
        
        @keyframes slideUp {
            from { transform: translateY(50px); opacity: 0; }
            to { transform: translateY(0); opacity: 1; }
        }
        
        .modal-close {
            position: absolute;
            top: 20px;
            right: 20px;
            font-size: 2rem;
            background: none;
            border: none;
            color: var(--text-muted);
            cursor: pointer;
            transition: all 0.3s;
            width: 40px;
            height: 40px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 10px;
        }
        
        .modal-close:hover {
            background: var(--bg-secondary);
            color: var(--text-primary);
        }
        
        .modal-header {
            margin-bottom: 30px;
        }
        
        .modal-title {
            font-size: 2rem;
            font-weight: 800;
            color: var(--text-primary);
            margin-bottom: 10px;
        }
        
        .modal-subtitle {
            color: var(--text-secondary);
            font-size: 1rem;
        }
        
        .form-group {
            margin-bottom: 25px;
        }
        
        .form-label {
            display: block;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 10px;
            font-size: 0.95rem;
        }
        
        .form-control {
            width: 100%;
            padding: 15px;
            border: 2px solid var(--border-color);
            border-radius: 12px;
            font-size: 1rem;
            transition: all 0.3s;
            font-family: 'Poppins', sans-serif;
        }
        
        .form-control:focus {
            outline: none;
            border-color: var(--primary-color);
            box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
        }
        
        textarea.form-control {
            resize: vertical;
            min-height: 120px;
        }
        
        .star-rating {
            display: flex;
            gap: 10px;
            font-size: 2rem;
        }
        
        .star-rating i {
            color: #e2e8f0;
            cursor: pointer;
            transition: all 0.3s;
        }
        
        .star-rating i:hover,
        .star-rating i.active {
            color: #fbbf24;
            transform: scale(1.2);
        }
        
        .form-submit {
            width: 100%;
            padding: 15px;
            background: var(--gradient-primary);
            color: white;
            border: none;
            border-radius: 12px;
            font-weight: 600;
            font-size: 1.1rem;
            cursor: pointer;
            transition: all 0.3s;
        }
        
        .form-submit:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-lg);
        }
        
        /* Responsive */
        @media (max-width: 1200px) {
            .content-grid {
                grid-template-columns: 1fr;
            }
            
            .sidebar {
                grid-template-columns: repeat(2, 1fr);
                display: grid;
            }
        }
        
        @media (max-width: 768px) {
            .hero-main {
                grid-template-columns: 1fr;
                text-align: center;
                gap: 25px;
            }
            
            .hero-avatar-wrapper {
                margin: 0 auto;
            }
            
            .hero-actions {
                flex-direction: row;
                justify-content: center;
                flex-wrap: wrap;
            }
            
            .action-btn {
                min-width: 150px;
            }
            
            .hero-stats {
                grid-template-columns: repeat(2, 1fr);
            }
            
            .sidebar {
                grid-template-columns: 1fr;
            }
            
            .theme-selector {
                top: 10px;
                right: 10px;
                padding: 20px;
                min-width: 280px;
            }
            
            .theme-grid {
                grid-template-columns: repeat(3, 1fr);
            }
            
            .content-card {
                padding: 25px;
            }
            
            .section-title {
                font-size: 1.5rem;
            }
            
            .reviews-grid,
            .certificates-grid,
            .courses-grid,
            .gallery-grid {
                grid-template-columns: 1fr;
            }
        }
        
        /* Loading */
        .loading-overlay {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: var(--bg-primary);
            display: flex;
            align-items: center;
            justify-content: center;
            z-index: 99999;
            transition: opacity 0.5s;
        }
        
        .loading-overlay.hidden {
            opacity: 0;
            pointer-events: none;
        }
        
        .spinner {
            width: 60px;
            height: 60px;
            border: 4px solid var(--border-color);
            border-top-color: var(--primary-color);
            border-radius: 50%;
            animation: spin 1s linear infinite;
        }
        
        @keyframes spin {
            to { transform: rotate(360deg); }
        }
		

/* Lightbox Styles */
/* Arka plan */
#lightbox {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.85);
    display: none;
    justify-content: center;
    align-items: center;
    z-index: 9999;
}

/* Göster */
#lightbox.show {
    display: flex;
}

/* İçerik alanı */
.lightbox-content {
    position: relative;
    max-width: 90%;
    max-height: 90%;
    width: 900px;
    background: #111;
    border-radius: 12px;
    padding: 20px 0 50px;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    align-items: center;
}

/* Medya Alanı */
.lightbox-media-wrapper {
    width: 100%;
    height: 70vh;
    display: flex;
    justify-content: center;
    align-items: center;
}

.lightbox-media-wrapper img,
.lightbox-media-wrapper iframe {
    max-width: 100%;
    max-height: 100%;
    border-radius: 10px;
    display: block;
}

/* Close Button */
.lightbox-close {
    position: absolute;
    top: 12px;
    right: 16px;
    font-size: 32px;
    background: transparent;
    color: #fff;
    border: none;
    cursor: pointer;
    z-index: 2;
}

/* Next / Prev */
.lightbox-nav {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(0,0,0,0.4);
    border: none;
    color: #fff;
    font-size: 28px;
    padding: 14px 18px;
    border-radius: 50%;
    cursor: pointer;
    transition: 0.2s;
    z-index: 2;
}

.lightbox-nav:hover {
    background: rgba(0,0,0,0.7);
}

.lightbox-prev {
    left: 20px;
}

.lightbox-next {
    right: 20px;
}

/* Caption */
.lightbox-caption {
    margin-top: 12px;
    color: #ddd;
    font-size: 16px;
    padding: 8px 20px;
    text-align: center;
    width: 100%;
}


/* Mobile Responsive */
@media (max-width: 768px) {
    .lightbox-nav {
        width: 40px;
        height: 40px;
        font-size: 2rem;
    }
    
    .lightbox-prev { left: 10px; }
    .lightbox-next { right: 10px; }
}		

.pdf-modal {
  display: none;
  position: fixed;
  z-index: 99999;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  background: rgba(0,0,0,0.85);
}

.pdf-modal-content {
  position: relative;
  width: 90%;
  max-width: 1100px;
  height: 90%;
  margin: 3% auto;
  background: #000;
  border-radius: 12px;
  overflow: hidden;
}

.pdf-modal iframe {
  width: 100%;
  height: 100%;
  background: #000;
}

.pdf-close {
  position: absolute;
  right: 3px;
  top: -1px;
  font-size: 32px;
  font-weight:bold;
  color: red;
  cursor: pointer;
  z-index: 2;
}
.pasif {background: #bbb !important;}


/* Yeşil Onay Tiki */
.verified-badge.green {
    background: #10b981;
    box-shadow: 0 2px 8px rgba(16, 185, 129, 0.4);
}

.verified-badge.green:hover {
    box-shadow: 0 4px 16px rgba(16, 185, 129, 0.6);
}

/* Altın Onay Tiki */
.verified-badge.gold {
    background: linear-gradient(135deg, #fbbf24 0%, #f59e0b 100%);
    box-shadow: 0 2px 8px rgba(251, 191, 36, 0.4);
}

.verified-badge.gold:hover {
    box-shadow: 0 4px 16px rgba(251, 191, 36, 0.6);
}

/* Mor Onay Tiki */
.verified-badge.purple {
    background: linear-gradient(135deg, #8b5cf6 0%, #7c3aed 100%);
    box-shadow: 0 2px 8px rgba(139, 92, 246, 0.4);
}

.verified-badge.purple:hover {
    box-shadow: 0 4px 16px rgba(139, 92, 246, 0.6);
} 
  
/* ==========================================
   TWITTER VERIFIED BADGE
   ========================================== */

.verified-badge {
    position: absolute;
    bottom: 3%;
    right: 3%;
    width: 32px;
    height: 32px;
    background: #1d9bf0;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 3px solid #ffffff;
    box-shadow: 0 2px 8px rgba(29, 155, 240, 0.4);
    z-index: 10;
    animation: verifiedPop 0.6s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

@keyframes verifiedPop {
    0% {
        transform: scale(0);
        opacity: 0;
    }
    50% {
        transform: scale(1.2);
    }
    100% {
        transform: scale(1);
        opacity: 1;
    }
}

.verified-badge svg {
    width: 18px;
    height: 18px;
    fill: #ffffff;
}

/* Hover Effect */
.verified-badge:hover {
    transform: scale(1.15);
    box-shadow: 0 4px 16px rgba(29, 155, 240, 0.6);
    transition: all 0.3s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

/* ==========================================
   AVATAR BADGE (Meslek İkonu)
   ========================================== */

.avatar-badge {
    position: absolute;
    bottom: -3px;
    left: 50%;
    transform: translateX(-50%);
    width: 52px;
    height: 52px;
    background: linear-gradient(135deg, #10b981 0%, #059669 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 4px solid #ffffff;
    box-shadow: 0 4px 12px rgba(16, 185, 129, 0.4);
    z-index: 5;
}

.avatar-badge i {
    font-size: 1.25rem;
    color: #ffffff;
}

/* ==========================================
   RESPONSIVE
   ========================================== */

@media (max-width: 768px) { 
    .hero-info { margin-top:25px;}
	
    .verified-badge {
        width: 28px;
        height: 28px;
        border-width: 2.5px;
    }
    
    .verified-badge svg {
        width: 16px;
        height: 16px;
    }
    
    .avatar-badge {
        width: 44px;
        height: 44px;
        border-width: 3px;
    }
    
    .avatar-badge i {
        font-size: 1.125rem;
    }
}

@media (max-width: 480px) { 
    .verified-badge {
        width: 24px;
        height: 24px;
        border-width: 2px;
        bottom: 10%;
        right: 10%;
    }
    
    .verified-badge svg {
        width: 14px;
        height: 14px;
    }
    
    .avatar-badge {
        width: 40px;
        height: 40px;
    }
    
    .avatar-badge i {
        font-size: 1rem;
    }
}
 /* Giriş gerektiren pasif butonlar */
.action-btn.btn-disabled {
    cursor: pointer;
    position: relative;
}

.action-btn.btn-disabled:hover {
    opacity: 0.8;
    transform: translateY(-2px);
}

.action-btn.btn-disabled .btn-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1px;
}

.action-btn.btn-disabled .login-hint {
    font-size: 0.65rem;
    opacity: 0.8;
    font-weight: 400;
    display: block;
    margin-top: 2px;
}