/* ============================================
   بنك الأسئلة - الأنماط
   ============================================ */

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

:root {
    --primary-color: #6366f1;
    --secondary-color: #3b82f6;
    --success-color: #10b981;
    --danger-color: #ef4444;
    --warning-color: #f59e0b;
    --dark-bg: #0f172a;
    --light-bg: #f8fafc;
    --card-bg: #ffffff;
    --text-dark: #1e293b;
    --text-light: #64748b;
    --border-color: #e2e8f0;
    --shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.15);
}

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

/* ============================================
   المخطط العام
   ============================================ */
.container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

/* ============================================
   الرأس والتنقل
   ============================================ */
.header {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    padding: 1.5rem;
    box-shadow: var(--shadow-lg);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo h1 {
    font-size: 1.8rem;
    font-weight: 700;
}

.navbar ul {
    list-style: none;
    display: flex;
    gap: 2rem;
    flex-wrap: wrap;
}

.navbar a {
    color: white;
    text-decoration: none;
    font-weight: 500;
    padding: 0.5rem 1rem;
    border-radius: 0.5rem;
    transition: all 0.3s ease;
}

.navbar a:hover,
.navbar a.active {
    background-color: rgba(255, 255, 255, 0.2);
}

/* ============================================
   المحتوى الرئيسي
   ============================================ */
.main-content {
    flex: 1;
    padding: 2rem;
}

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

.section.active {
    display: block;
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

/* ============================================
   الصفحة الرئيسية
   ============================================ */
.welcome-card {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    padding: 3rem;
    border-radius: 1rem;
    margin-bottom: 2rem;
    text-align: center;
    box-shadow: var(--shadow-lg);
}

.welcome-card h2 {
    font-size: 2rem;
    margin-bottom: 0.5rem;
}

.stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.stat-card {
    background: var(--card-bg);
    padding: 1.5rem;
    border-radius: 1rem;
    text-align: center;
    box-shadow: var(--shadow);
    border-top: 4px solid var(--primary-color);
}

.stat-card h3 {
    font-size: 2rem;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.stat-card p {
    color: var(--text-light);
}

/* ============================================
   الأزرار
   ============================================ */
.quick-actions {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

.btn {
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 0.5rem;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    display: inline-block;
}

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

.btn-primary:hover {
    background-color: #4f46e5;
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

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

.btn-secondary:hover {
    background-color: #2563eb;
    transform: translateY(-2px);
}

/* ============================================
   صفحة الأسئلة
   ============================================ */
.questions-header {
    margin-bottom: 2rem;
}

.questions-header h2 {
    margin-bottom: 1rem;
    font-size: 1.8rem;
}

.filter-bar {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.search-box,
.filter-select {
    padding: 0.75rem 1rem;
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
    font-size: 1rem;
    flex: 1;
    min-width: 200px;
    direction: rtl;
}

.search-box:focus,
.filter-select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.questions-container {
    display: grid;
    gap: 1.5rem;
}

.question-card {
    background: var(--card-bg);
    padding: 1.5rem;
    border-radius: 1rem;
    box-shadow: var(--shadow);
    border-right: 4px solid var(--primary-color);
}

.question-number {
    display: inline-block;
    background: var(--primary-color);
    color: white;
    padding: 0.25rem 0.75rem;
    border-radius: 0.5rem;
    font-size: 0.85rem;
    margin-bottom: 0.5rem;
}

.question-category {
    display: inline-block;
    background: var(--light-bg);
    color: var(--primary-color);
    padding: 0.25rem 0.75rem;
    border-radius: 0.5rem;
    font-size: 0.85rem;
    margin-right: 0.5rem;
    margin-bottom: 0.5rem;
}

.question-text {
    font-size: 1.2rem;
    margin: 1rem 0;
    color: var(--text-dark);
}

.answer-options {
    display: grid;
    gap: 0.75rem;
    margin: 1.5rem 0;
}

.option-btn {
    padding: 0.75rem 1rem;
    border: 2px solid var(--border-color);
    background-color: white;
    border-radius: 0.5rem;
    cursor: pointer;
    text-align: right;
    transition: all 0.3s ease;
    font-size: 1rem;
}

.option-btn:hover {
    border-color: var(--primary-color);
    background-color: rgba(99, 102, 241, 0.05);
}

.option-btn.selected {
    border-color: var(--primary-color);
    background-color: rgba(99, 102, 241, 0.1);
}

.option-btn.correct {
    border-color: var(--success-color);
    background-color: rgba(16, 185, 129, 0.1);
    color: var(--success-color);
}

.option-btn.incorrect {
    border-color: var(--danger-color);
    background-color: rgba(239, 68, 68, 0.1);
    color: var(--danger-color);
}

.answer-status {
    padding: 1rem;
    border-radius: 0.5rem;
    font-size: 0.9rem;
    margin-top: 1rem;
}

.answer-status.correct {
    background-color: rgba(16, 185, 129, 0.1);
    color: var(--success-color);
    border: 1px solid var(--success-color);
}

.answer-status.incorrect {
    background-color: rgba(239, 68, 68, 0.1);
    color: var(--danger-color);
    border: 1px solid var(--danger-color);
}

.answer-status.unanswered {
    background-color: rgba(100, 116, 139, 0.1);
    color: var(--text-light);
    border: 1px solid var(--border-color);
}

/* ============================================
   صفحة الامتحان
   ============================================ */
.quiz-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    padding-bottom: 1rem;
    border-bottom: 2px solid var(--border-color);
}

.quiz-timer {
    background: var(--danger-color);
    color: white;
    padding: 0.75rem 1.5rem;
    border-radius: 0.5rem;
    font-weight: 600;
    font-size: 1.1rem;
}

.quiz-container {
    display: grid;
    gap: 2rem;
    margin-bottom: 2rem;
}

.quiz-question {
    background: var(--card-bg);
    padding: 2rem;
    border-radius: 1rem;
    box-shadow: var(--shadow);
    border-right: 4px solid var(--primary-color);
}

.quiz-q-number {
    color: var(--text-light);
    font-size: 0.9rem;
    margin-bottom: 0.5rem;
}

.quiz-question-text {
    font-size: 1.3rem;
    margin-bottom: 1.5rem;
}

.quiz-options {
    display: grid;
    gap: 1rem;
}

.quiz-option {
    display: flex;
    align-items: center;
    padding: 1rem;
    border: 2px solid var(--border-color);
    border-radius: 0.5rem;
    cursor: pointer;
    transition: all 0.3s ease;
}

.quiz-option input[type="radio"] {
    margin-left: 1rem;
    width: 20px;
    height: 20px;
    cursor: pointer;
}

.quiz-option:hover {
    border-color: var(--primary-color);
    background-color: rgba(99, 102, 241, 0.05);
}

.quiz-controls {
    display: flex;
    gap: 1rem;
    justify-content: center;
}

/* ============================================
   صفحة الإحصائيات
   ============================================ */
.stats-header {
    margin-bottom: 2rem;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
}

.stats-card {
    background: var(--card-bg);
    padding: 2rem;
    border-radius: 1rem;
    box-shadow: var(--shadow);
}

.stats-card h3 {
    margin-bottom: 1.5rem;
    color: var(--primary-color);
}

.progress-bar {
    width: 100%;
    height: 30px;
    background-color: var(--light-bg);
    border-radius: 0.5rem;
    overflow: hidden;
    margin-bottom: 1rem;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    width: 0%;
    transition: width 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 600;
}

#category-stats {
    display: grid;
    gap: 0.5rem;
}

#difficult-questions {
    display: grid;
    gap: 0.75rem;
}

#difficult-questions p {
    padding: 0.75rem;
    background-color: rgba(239, 68, 68, 0.1);
    border-right: 3px solid var(--danger-color);
    border-radius: 0.25rem;
}

/* ============================================
   التذييل
   ============================================ */
.footer {
    background-color: var(--dark-bg);
    color: white;
    text-align: center;
    padding: 2rem;
    margin-top: auto;
}

/* ============================================
   الرسائل
   ============================================ */
.no-results {
    text-align: center;
    color: var(--text-light);
    padding: 2rem;
    font-size: 1.1rem;
}

/* ============================================
   Responsive Design
   ============================================ */
@media (max-width: 768px) {
    .header {
        flex-direction: column;
        gap: 1rem;
    }
    
    .navbar ul {
        flex-direction: column;
        gap: 0.5rem;
    }
    
    .main-content {
        padding: 1rem;
    }
    
    .welcome-card {
        padding: 1.5rem;
    }
    
    .welcome-card h2 {
        font-size: 1.5rem;
    }
    
    .stats {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .filter-bar {
        flex-direction: column;
    }
    
    .quiz-header {
        flex-direction: column;
        gap: 1rem;
        align-items: flex-start;
    }
    
    .quiz-controls {
        flex-direction: column;
    }
}