/* --- RENK PALETİ (Aydınlatık Mod - Varsayılan) --- */
        :root {
            --primary-color: #B76E79;
            --secondary-color: #FDF5E6;
            --button-bg: #D4A5A5;
            --button-hover: #C58F8F;
            --accent-color: #9E7F7F;
            --bg-color: #FFF9F9;
            --card-bg: #FFFFFF;
            --text-color: #4E342E;
            --text-light: #8D6E63;
            --border-color: #F0E6E6;
            --note-bg: #FFF0F5;
            --soft-shadow: 0 4px 15px rgba(183, 110, 121, 0.15);
            --nav-bg: rgba(255, 249, 249, 0.95);
            
            /* Oyun Özel Renkler */
            --success-bg: #E8F5E9;
            --success-text: #2E7D32;
            --error-bg: #FFEBEE;
            --error-text: #C62828;
        }

        /* --- KOYU MOD DEĞİŞKENLERİ --- */
        [data-theme="dark"] {
            --primary-color: #E08E98;
            --secondary-color: #2D2D2D;
            --button-bg: #A07070;
            --button-hover: #805050;
            --accent-color: #C0A0A0;
            --bg-color: #1A1A1A;
            --card-bg: #252525;
            --text-color: #EAEAEA;
            --text-light: #B0B0B0;
            --border-color: #444444;
            --note-bg: #333333;
            --nav-bg: rgba(26, 26, 26, 0.95);
            --soft-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
            
            /* Oyun Özel Renkler - Koyu Uyumlu */
            --success-bg: #1B3320;
            --success-text: #4CAF50;
            --error-bg: #3E1B1B;
            --error-text: #FF6B6B;
        }

        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
            transition: background-color 0.3s ease, color 0.3s ease, border-color 0.3s ease;
        }

        body {
            font-family: 'Lato', sans-serif;
            background-color: var(--bg-color);
            color: var(--text-color);
            line-height: 1.7;
            overflow-x: hidden;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }

        a {
            text-decoration: none;
            color: inherit;
            transition: all 0.3s ease;
        }

        /* --- HEADER & NAV (YENİ) --- */
        header {
            background: var(--nav-bg);
            backdrop-filter: blur(10px);
            position: sticky;
            top: 0;
            z-index: 1000;
            border-bottom: 1px solid var(--border-color);
            padding: 15px 0;
        }

        .container {
            max-width: 1100px;
            margin: 0 auto;
            padding: 0 20px;
        }

        nav {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .logo {
            font-family: 'Playfair Display', serif;
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--primary-color);
            display: flex;
            align-items: center;
            gap: 10px;
            z-index: 1002;
        }

        .logo span {
            font-family: 'Scheherazade New', serif;
            font-size: 1.2rem;
            color: var(--accent-color);
        }

        .nav-links {
            display: flex;
            gap: 30px;
        }

        .nav-links a {
            font-weight: 400;
            color: var(--text-color);
            font-size: 0.95rem;
            position: relative;
        }

        .nav-links a::after {
            content: '';
            position: absolute;
            width: 0;
            height: 2px;
            bottom: -5px;
            left: 0;
            background-color: var(--primary-color);
            transition: width 0.3s;
        }

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

        /* Tema Toggle Butonu */
        .theme-toggle {
            background: transparent;
            border: 2px solid var(--border-color);
            color: var(--text-color);
            width: 40px;
            height: 40px;
            border-radius: 50%;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            margin-right: 15px;
        }

        .theme-toggle:hover {
            background: var(--note-bg);
            border-color: var(--primary-color);
        }

        /* Burger Menü Butonu */
        .burger-btn {
            display: none; /* Masaüstünde gizli */
            flex-direction: column;
            gap: 5px;
            background: transparent;
            border: none;
            cursor: pointer;
            padding: 10px;
            z-index: 1001;
        }

        .burger-btn span {
            display: block;
            width: 25px;
            height: 3px;
            background-color: var(--primary-color);
            border-radius: 2px;
            transition: all 0.3s ease;
        }

        .burger-btn.active span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 6px);
        }
        .burger-btn.active span:nth-child(2) {
            opacity: 0;
        }
        .burger-btn.active span:nth-child(3) {
            transform: rotate(-45deg) translate(5px, -6px);
        }

        /* OYUN ALANI STİLLERİ */
        .game-wrapper {
            flex: 1;
            display: flex;
            justify-content: center;
            align-items: center;
            padding: 40px 20px;
            background: linear-gradient(135deg, var(--bg-color) 0%, var(--note-bg) 100%);
        }

        .game-container {
            width: 100%;
            max-width: 650px;
            background: var(--card-bg);
            border-radius: 25px;
            box-shadow: var(--soft-shadow);
            overflow: hidden;
            padding: 30px;
            border: 1px solid var(--border-color);
            position: relative;
        }

        .game-tabs {
            display: flex;
            justify-content: center;
            gap: 10px;
            margin-bottom: 30px;
            flex-wrap: wrap;
        }

        .tab-btn {
            background: transparent;
            border: 2px solid transparent;
            font-family: 'Playfair Display', serif;
            font-size: 1rem;
            color: var(--text-light);
            cursor: pointer;
            padding: 10px 20px;
            border-radius: 20px;
            transition: all 0.3s;
            font-weight: 600;
        }

        .tab-btn:hover {
            background: var(--note-bg);
            color: var(--primary-color);
        }

        .tab-btn.active {
            background: var(--primary-color);
            color: white;
            box-shadow: 0 4px 10px rgba(183, 110, 121, 0.3);
        }

        .game-section {
            display: none;
            animation: fadeIn 0.5s ease;
        }

        .game-section.active {
            display: block;
        }

        @keyframes fadeIn {
            from { opacity: 0; transform: translateY(10px); }
            to { opacity: 1; transform: translateY(0); }
        }

        .score-board {
            background: var(--note-bg);
            color: var(--accent-color);
            padding: 12px;
            border-radius: 15px;
            text-align: center;
            margin-bottom: 25px;
            font-weight: 600;
            font-family: 'Playfair Display', serif;
            border: 1px solid var(--border-color);
            display: flex;
            justify-content: space-around;
            flex-wrap: wrap;
            gap: 10px;
        }

        .score-item span {
            color: var(--primary-color);
            font-weight: 700;
            font-size: 1.2rem;
        }

        .card-content {
            text-align: center;
            padding: 20px 0;
        }

        .question-text {
            font-size: 1rem;
            color: var(--text-light);
            margin-bottom: 15px;
            font-style: italic;
        }

        .term-highlight {
            font-family: 'Playfair Display', serif;
            font-size: 3rem;
            color: var(--primary-color);
            margin: 10px 0 25px;
            font-weight: 700;
            min-height: 4rem;
            text-shadow: 1px 1px 2px rgba(0,0,0,0.05);
        }

        /* ŞIKLAR IZGARASI (GRID) */
        .options-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 15px;
            margin-top: 20px;
            width: 100%;
        }

        /* ŞIK BUTONU STİLİ */
        .option-btn {
            background: var(--card-bg);
            border: 2px solid var(--border-color);
            padding: 18px 15px;
            border-radius: 15px;
            cursor: pointer;
            font-family: 'Lato', sans-serif;
            font-size: 0.95rem;
            color: var(--text-color);
            transition: all 0.3s;
            min-height: auto;
            display: flex;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            text-align: center;
            font-weight: 400;
            white-space: normal;
            line-height: 1.5;
            word-wrap: break-word;
            overflow: visible;
        }

        .option-btn:hover:not(:disabled) {
            border-color: var(--primary-color);
            background: var(--note-bg);
            transform: translateY(-2px);
        }

        .option-btn:disabled {
            cursor: default;
            opacity: 0.7;
        }

        .option-btn.correct {
            background: var(--success-bg);
            border-color: var(--success-text);
            color: var(--success-text);
            font-weight: 700;
            box-shadow: 0 4px 10px rgba(46, 125, 50, 0.2);
        }

        .option-btn.wrong {
            background: var(--error-bg);
            border-color: var(--error-text);
            color: var(--error-text);
            opacity: 0.8;
        }

        .feedback-msg {
            margin-top: 20px;
            font-weight: 700;
            min-height: 1.8em;
            font-size: 1.1rem;
            font-family: 'Playfair Display', serif;
        }

        .correct-text { color: var(--success-text); }
        .wrong-text { color: var(--error-text); }

        .definition-box {
            background: var(--note-bg);
            padding: 20px;
            border-radius: 15px;
            margin-top: 20px;
            border-left: 4px solid var(--primary-color);
            display: none;
            text-align: left;
        }

        .definition-box strong {
            color: var(--primary-color);
            font-family: 'Playfair Display', serif;
            font-size: 1.1rem;
        }

        .definition-text {
            color: var(--text-color);
            margin-top: 8px;
            font-size: 1rem;
        }

        .origin-tag {
            display: inline-block;
            margin-top: 10px;
            font-size: 0.85rem;
            color: var(--accent-color);
            font-style: italic;
        }

        .next-btn {
            background: var(--primary-color);
            color: white;
            border: none;
            padding: 12px 40px;
            border-radius: 30px;
            font-family: 'Lato', sans-serif;
            font-weight: 600;
            font-size: 1rem;
            margin-top: 25px;
            cursor: pointer;
            transition: all 0.3s;
            box-shadow: 0 4px 15px rgba(183, 110, 121, 0.3);
            display: none;
        }

        .next-btn:hover {
            background: var(--button-hover);
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(183, 110, 121, 0.4);
        }

        .progress-info {
            font-size: 0.85rem;
            color: var(--text-light);
            margin-top: 5px;
            font-weight: 400;
        }

        /* FOOTER */
        footer {
            background: var(--card-bg);
            border-top: 1px solid var(--border-color);
            padding: 30px 0;
            text-align: center;
            margin-top: auto;
        }

        .copyright {
            font-size: 0.85rem;
            color: var(--text-light);
        }

        .back-link {
            display: inline-block;
            margin-bottom: 30px;
            color: var(--primary-color);
            font-weight: 600;
            font-family: 'Playfair Display', serif;
        }

        .back-link:hover {
            text-decoration: underline;
        }

                /* --- MOBİL UYUMLULUK (768px ve altı) --- */
        @media (max-width: 768px) {
            /* Burger butonunu göster */
            .burger-btn {
                display: flex;
                margin-left: 15px;
            }

            /* Menü linklerini gizle */
            .nav-links {
                display: none;
                position: absolute;
                top: 60px; /* Header yüksekliğine göre ayarlanabilir */
                left: 0;
                width: 100%;
                background: var(--card-bg);
                flex-direction: column;
                padding: 20px 0;
                box-shadow: 0 4px 10px rgba(0,0,0,0.1);
                border-bottom: 2px solid var(--border-color);
                z-index: 1000;
                animation: slideDown 0.3s ease;
            }

            /* Menü aktifken görünür yap */
            .nav-links.active {
                display: flex;
            }

            /* Menü linkleri stili */
            .nav-links a {
                display: block;
                text-align: center;
                padding: 12px 0;
                font-size: 1rem;
                color: var(--text-color);
                border-bottom: 1px solid var(--border-color);
            }

            .nav-links a:last-child {
                border-bottom: none;
            }

            /* Alt çizgi animasyonunu kaldır */
            .nav-links a::after {
                display: none;
            }

            /* Animasyon */
            @keyframes slideDown {
                from { opacity: 0; transform: translateY(-10px); }
                to { opacity: 1; transform: translateY(0); }
            }

            /* Oyun konteyneri */
            .game-container { padding: 15px; }
            
            /* Başlık boyutu */
            .term-highlight { font-size: 2rem; min-height: 3rem; }
            
            /* Şıklar tek sütun olsun */
            .options-grid {
                grid-template-columns: 1fr !important;
                gap: 12px;
            }
            
            .option-btn {
                width: 100% !important;
                padding: 15px 12px !important;
                font-size: 0.9rem !important;
            }
        }

        /* Masaüstü için düzeltme (burger gizle, menü göster) */
        @media (min-width: 769px) {
            .burger-btn { display: none; }
            .nav-links {
                display: flex !important;
                position: static;
                background: transparent;
                box-shadow: none;
                padding: 0;
                width: auto;
                flex-direction: row;
            }
            .nav-links a { border: none; }
        }

        .trademark-notice {
    font-size: 0.9rem;
    color: var(--text-light, #666);
    margin: 8px 0;
}

.dark-mode .trademark-notice {
    color: var(--text-light-dark, #aaa);
}

.brand-badge {
    display: inline-block;
/* background: rgba(109, 74, 175, 0.1); */    
    padding: 4px 10px;
    border-radius: 4px;
    font-size: 0.85rem;
    color: var(--primary-color, #6d4aff);
}

.separator {
    margin: 0 8px;
    color: var(--text-muted, #ccc);
}

.legal-note {
    font-size: 0.75rem;
    color: var(--text-muted, #999);
    margin: 8px 0 0;
}

.dark-mode .legal-note {
    color: var(--text-muted-dark, #777);
}