@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;600;700;800&display=swap');

/* --- 1. RENK DEĞİŞKENLERİ (DARK MODE ALTYAPISI) --- */
:root {
    /* Varsayılan (Aydınlık) Tema */
    --bg-body: #f8fafc;
    --bg-card: #ffffff;
    --text-main: #1e293b;
    --text-sub: #64748b;
    --border-color: #e2e8f0;
    
    --primary-color: #2563eb;
    --primary-hover: #1d4ed8;
    
    --success-bg: #dcfce7;
    --success-text: #166534;
    --success-border: #22c55e;
    
    --error-bg: #fee2e2;
    --error-text: #991b1b;
    --error-border: #ef4444;

    --input-bg: #ffffff;
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    
    --header-bg: #0f172a; /* Admin Header */
}

body.dark-mode {
    /* Karanlık Tema */
    --bg-body: #0f172a;      /* Çok koyu lacivert/gri */
    --bg-card: #1e293b;      /* Koyu gri kartlar */
    --text-main: #f1f5f9;    /* Beyazımsı metin */
    --text-sub: #94a3b8;     /* Açık gri alt metin */
    --border-color: #334155; /* Koyu gri kenarlık */
    
    --primary-color: #3b82f6; 
    --primary-hover: #2563eb;

    --success-bg: #064e3b;
    --success-text: #ecfccb;
    --success-border: #059669;

    --error-bg: #7f1d1d;
    --error-text: #fca5a5;
    --error-border: #dc2626;

    --input-bg: #1e293b;
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.5);
    
    --header-bg: #020617;
}

/* --- 2. GENEL SIFIRLAMA & BODY --- */
* { box-sizing: border-box; }

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-body);
    color: var(--text-main);
    margin: 0;
    padding: 0;
    /* transition satırını sildik */
}

/* --- 3. CONTAINER VE LAYOUT --- */
.container {
    width: 100%;
    max-width: 600px;
    background: var(--bg-card);
    min-height: 100vh;
    box-shadow: 0 0 20px rgba(0,0,0,0.05);
    display: flex;
    flex-direction: column;
    margin: 0 auto;
    position: relative;
}

/* --- 4. HEADER (Frontend) --- */
.header, .quiz-header {
    padding: 1.5rem;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: var(--bg-card);
    transition: background 0.3s;
}

.logo {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--primary-color);
    letter-spacing: -1px;
}

/* --- 5. KARTLAR VE LİSTELER --- */
.card, .list-item, .panel-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 1.5rem;
    margin-bottom: 1rem;
    transition: transform 0.2s, background 0.3s, border-color 0.3s;
}
.list-item { 
    display: flex; 
    justify-content: space-between; 
    align-items: center; 
    margin: 0; 
    border-radius: 0; 
    border-width: 0 0 1px 0; 
    padding: 1.5rem;
    cursor: pointer;
}
.list-item:hover { background-color: rgba(0,0,0,0.02); }
.list-item h3 { margin: 0; font-size: 1.1rem; color: var(--text-main); }
.list-item p { margin: 0.5rem 0 0 0; color: var(--text-sub); font-size: 0.9rem; }
.arrow { color: var(--text-sub); }

/* --- 6. FORM ELEMANLARI --- */
input[type="text"], input[type="password"], textarea, select {
    background-color: var(--input-bg);
    color: var(--text-main);
    border: 2px solid var(--border-color);
    padding: 1rem;
    border-radius: 12px;
    width: 100%;
    outline: none;
    font-family: inherit;
    transition: border-color 0.3s;
}
input:focus, textarea:focus, select:focus { border-color: var(--primary-color); }

/* Butonlar */
.btn {
    background-color: var(--primary-color);
    color: white;
    border: none;
    padding: 1rem 2rem;
    border-radius: 12px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    width: 100%;
    transition: background 0.2s;
    text-align: center;
    text-decoration: none;
    display: inline-block;
}
.btn:hover { background-color: var(--primary-hover); }
.btn:disabled { background-color: var(--text-sub); opacity: 0.5; cursor: not-allowed; }

.btn-outline {
    background: transparent;
    border: 2px solid var(--border-color);
    color: var(--text-sub);
    padding: 0.8rem;
    border-radius: 12px;
    cursor: pointer;
    font-weight: 600;
}
.btn-outline:hover { border-color: var(--primary-color); color: var(--primary-color); }

/* Karanlık Mod Toggle Butonu (Metin Şeklinde) */
.theme-text-btn {
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-main);
    padding: 8px 15px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    font-family: 'Inter', sans-serif;
    white-space: nowrap;
}
.theme-text-btn:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
}

/* --- 7. QUIZ EKRANI ÖZEL --- */
.question-area { 
    padding: 1.5rem; 
    flex-grow: 1; 
    position: relative; 
    padding-top: 3.5rem; /* Sağ üst buton için boşluk */
}
.q-text { 
    font-size: 1.15rem; 
    font-weight: 600; 
    line-height: 1.6; 
    margin-bottom: 1.5rem; 
    color: var(--text-main); 
}

/* Şık Butonları */
.option-btn {
    width: 100%;
    background: var(--bg-card);
    border: 2px solid var(--border-color);
    padding: 1rem;
    border-radius: 12px;
    text-align: left;
    font-size: 1rem;
    cursor: pointer;
    color: var(--text-main);
    margin-bottom: 10px;
    transition: all 0.2s;
}
.option-btn:hover:not(:disabled) { border-color: var(--primary-color); background: rgba(37,99,235,0.05); }

/* Doğru / Yanlış Renkleri */
.option-btn.correct { background-color: var(--success-bg) !important; border-color: var(--success-border) !important; color: var(--success-text) !important; }
.option-btn.wrong { background-color: var(--error-bg) !important; border-color: var(--error-border) !important; color: var(--error-text) !important; }

/* Köşedeki İtiraz Butonu */
.report-corner-btn {
    position: absolute;
    top: 15px;
    right: 15px;
    background-color: var(--bg-card);
    color: var(--error-border);
    border: 1px solid var(--error-border);
    padding: 6px 12px;
    border-radius: 8px;
    font-size: 0.75rem;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 5px;
    z-index: 5;
    transition: all 0.2s;
}
.report-corner-btn:hover {
    background-color: var(--error-border);
    color: white;
}

.footer-nav { padding: 1rem; border-top: 1px solid var(--border-color); background: var(--bg-card); display: flex; gap: 1rem; }

/* --- 8. MODAL (POP-UP) --- */
.modal { display: none; position: fixed; z-index: 1000; left: 0; top: 0; width: 100%; height: 100%; background-color: rgba(0,0,0,0.5); backdrop-filter: blur(2px); }
.modal-content { 
    background-color: var(--bg-card); 
    margin: 15% auto; 
    padding: 2rem; 
    border: 1px solid var(--border-color); 
    width: 90%; 
    max-width: 450px; 
    border-radius: 16px; 
    box-shadow: 0 10px 25px rgba(0,0,0,0.2); 
    position: relative; 
    color: var(--text-main);
}
.close { position: absolute; top: 15px; right: 20px; color: var(--text-sub); font-size: 24px; font-weight: bold; cursor: pointer; }
.close:hover { color: var(--text-main); }


/* --- 9. ADMIN PANELI STILLERI --- */
/* (PHP içinde style taginde durabilir ama buraya almak en temizidir) */

/* Admin Üst Bar (Fixed) */
.top-bar { 
    position: fixed; 
    top: 0; left: 0; width: 100%; height: 70px;
    background: var(--header-bg); 
    color: white; 
    z-index: 999; 
    box-shadow: var(--shadow);
    display: flex;
    align-items: center;
    justify-content: center;
}
.app-title { 
    position: absolute; 
    left: 50%; transform: translateX(-50%);
    font-size: 1.5rem; font-weight: 800; letter-spacing: -1px; margin: 0;
    color: white;
}
.back-btn { 
    position: absolute; right: 25px;
    color: white; text-decoration: none; 
    border: 1px solid rgba(255,255,255,0.3); padding: 8px 20px; border-radius: 20px; 
    font-size: 0.9rem; background: rgba(255,255,255,0.05);
}
.back-btn:hover { background: rgba(255,255,255,0.2); }

/* Admin Izgara Düzeni */
.admin-layout { 
    display: grid; 
    grid-template-columns: 2fr 1fr; 
    gap: 25px; 
    padding: 2rem; 
    max-width: 1400px; 
    margin: 0 auto; 
}

/* Admin Panel Kartları */
.panel-header {
    background: var(--bg-card);
    border-bottom: 1px solid var(--border-color);
}
.panel-header h3 { color: var(--text-main); }

/* Admin Tablolar */
.report-table th { background: var(--bg-body); color: var(--text-sub); border-bottom: 2px solid var(--border-color); }
.report-table td { border-bottom: 1px solid var(--border-color); color: var(--text-main); }

/* Admin Klasör Sistemi */
.folder-header { 
    background: var(--bg-body); 
    color: var(--text-sub); 
    border-bottom: 1px solid var(--border-color); 
}
.folder-header:hover { background: var(--border-color); color: var(--text-main); }
.folder-content { background: var(--bg-card); }
.test-row { border-bottom: 1px solid var(--border-color); }
.test-row:hover { background: var(--bg-body); }

/* Rozetler */
.badge { display: inline-block; padding: 4px 8px; border-radius: 4px; font-size: 0.75rem; font-weight: 600; }
.badge-sci { background: #e0e7ff; color: #3730a3; }
.badge-des { background: #ffedd5; color: #9a3412; }

/* Admin Action Butonları */
.action-btn { text-decoration: none; padding: 5px 10px; border-radius: 6px; font-size: 0.8rem; font-weight: 600; display: inline-block; margin-right: 5px; }
.btn-edit { background: #dbeafe; color: #1e40af; }
.btn-del { background: #fee2e2; color: #991b1b; }
.btn-ok { background: #dcfce7; color: #166534; }

/* Mobil Uyumluluk */
@media (max-width: 900px) {
    .admin-layout { grid-template-columns: 1fr; }
    .header { flex-direction: column; gap: 15px; }
}

/* --- LOGIN (GİRİŞ) SAYFASI ÖZEL --- */
body.login-page {
    padding-top: 0 !important; /* Admin header boşluğunu iptal et */
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    background-color: var(--bg-body);
}

.login-card {
    width: 100%;
    max-width: 400px;
    background: var(--bg-card);
    padding: 2.5rem;
    border-radius: 24px; /* Daha yuvarlak köşeler */
    box-shadow: 0 10px 30px -10px rgba(0,0,0,0.1);
    border: 1px solid var(--border-color);
    text-align: center;
}

.login-title {
    font-size: 2rem;
    font-weight: 800;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
    letter-spacing: -1px;
}

.login-subtitle {
    color: var(--text-sub);
    margin-bottom: 2rem;
    font-size: 0.95rem;
}

/* --- ESTETİK TEMA BUTONU (style.css EN ALTINA EKLE) --- */

.aesthetic-theme-btn {
    display: flex;
    align-items: center;
    gap: 8px; /* İkon ile yazı arası boşluk */
    background-color: var(--bg-body);
    border: 1px solid var(--border-color);
    color: var(--text-main);
    padding: 8px 16px;
    border-radius: 30px; /* Tam yuvarlak kenarlar (Hap şekli) */
    font-size: 0.85rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1); /* Yumuşak geçiş */
    font-family: 'Inter', sans-serif;
    box-shadow: 0 2px 5px rgba(0,0,0,0.05); /* Hafif gölge */
}

.aesthetic-theme-btn:hover {
    background-color: var(--bg-card);
    border-color: var(--primary-color);
    color: var(--primary-color);
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.15); /* Hoverda gölge artar */
    transform: translateY(-1px); /* Hafif yukarı kalkar */
}

/* Mobilde sadece ikon görünsün (Yer kaplamaması için) */
@media (max-width: 480px) {
    .aesthetic-theme-btn span { display: none; } /* Yazıyı gizle */
    .aesthetic-theme-btn { padding: 8px; border-radius: 50%; } /* Yuvarlak yap */
}