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

:root {
    --primary-color: #2c3e50;
    --secondary-color: #3498db;
    --accent-color: #e74c3c;
    --success-color: #27ae60;
    --warning-color: #f39c12;
    --light-bg: #f8f9fa;
    --dark-text: #2c3e50;
    --light-text: #7f8c8d;
    --border-color: #ddd;
    --shadow: 0 2px 10px rgba(0,0,0,0.1);
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: var(--dark-text);
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    direction: rtl;
}

/* تنسيق الرأس */
header {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 2rem;
}

.logo h2 {
    color: var(--primary-color);
    font-size: 1.5rem;
}

nav ul {
    list-style: none;
    display: flex;
    gap: 2rem;
}

nav ul li a {
    color: var(--dark-text);
    text-decoration: none;
    font-weight: 600;
    padding: 0.5rem 1rem;
    border-radius: 25px;
    transition: all 0.3s ease;
    position: relative;
}

nav ul li a:hover {
    background: var(--secondary-color);
    color: white;
    transform: translateY(-2px);
}

nav ul li a.active {
    background: var(--secondary-color);
    color: white;
}

/* تنسيق المحتوى الرئيسي */
main {
    max-width: 1200px;
    margin: 2rem auto;
    padding: 0 2rem;
}

/* قسم البطل */
.hero {
    background: linear-gradient(135deg, rgba(255,255,255,0.9) 0%, rgba(255,255,255,0.7) 100%);
    backdrop-filter: blur(10px);
    border-radius: 20px;
    padding: 4rem 2rem;
    text-align: center;
    margin-bottom: 3rem;
    box-shadow: var(--shadow);
}

.hero-content h1 {
    font-size: 3rem;
    margin-bottom: 1rem;
    background: linear-gradient(135deg, var(--secondary-color), var(--primary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-content p {
    font-size: 1.2rem;
    color: var(--light-text);
    margin-bottom: 2rem;
}

.cta-button {
    display: inline-block;
    background: var(--secondary-color);
    color: white;
    padding: 1rem 2rem;
    border-radius: 50px;
    text-decoration: none;
    font-weight: bold;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(52, 152, 219, 0.3);
}

.cta-button:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(52, 152, 219, 0.4);
    background: var(--primary-color);
}

/* تنسيق بطاقات الطلاب */
.students-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin-top: 2rem;
}

.student-card {
    background: white;
    padding: 2rem;
    border-radius: 15px;
    text-align: center;
    box-shadow: var(--shadow);
    transition: transform 0.3s ease;
    border: 1px solid var(--border-color);
}

.student-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0,0,0,0.15);
}

.student-card h3 {
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.student-card p {
    color: var(--light-text);
    margin-bottom: 1rem;
}

.student-id {
    background: var(--secondary-color);
    color: white;
    padding: 0.3rem 1rem;
    border-radius: 20px;
    font-size: 0.9rem;
}

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

.stat-card {
    background: white;
    padding: 2rem;
    border-radius: 15px;
    text-align: center;
    box-shadow: var(--shadow);
}

.stat-card h3 {
    font-size: 3rem;
    color: var(--secondary-color);
    margin-bottom: 0.5rem;
}

/* تنسيق التطبيقات */
.page-header {
    text-align: center;
    margin-bottom: 3rem;
}

.page-header h1 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    color: white;
}

.page-header p {
    font-size: 1.2rem;
    color: rgba(255,255,255,0.8);
}

.filters {
    background: white;
    padding: 1.5rem;
    border-radius: 15px;
    margin-bottom: 2rem;
    display: flex;
    gap: 1rem;
    align-items: center;
    flex-wrap: wrap;
    box-shadow: var(--shadow);
}

.filters select, .filters button {
    padding: 0.7rem 1rem;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    background: white;
    font-size: 1rem;
}

.filters button {
    background: var(--secondary-color);
    color: white;
    border: none;
    cursor: pointer;
    transition: background 0.3s ease;
}

.filters button:hover {
    background: var(--primary-color);
}

.apps-container {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 2rem;
}

.app-card {
    background: white;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: transform 0.3s ease;
    border: 1px solid var(--border-color);
}

.app-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 35px rgba(0,0,0,0.1);
}

.app-header {
    padding: 1.5rem;
    display: flex;
    align-items: center;
    gap: 1rem;
    border-bottom: 1px solid var(--border-color);
}

.app-logo {
    width: 60px;
    height: 60px;
    object-fit: cover;
    border-radius: 12px;
}

.app-info h3 {
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.company {
    color: var(--light-text);
    margin-bottom: 0.5rem;
}

.field-badge, .price-badge {
    display: inline-block;
    padding: 0.3rem 0.8rem;
    border-radius: 20px;
    font-size: 0.8rem;
    margin-right: 0.5rem;
}

.field-badge {
    background: var(--light-bg);
    color: var(--dark-text);
}

.price-badge.free {
    background: var(--success-color);
    color: white;
}

.price-badge.paid {
    background: var(--warning-color);
    color: white;
}

.app-details {
    padding: 1.5rem;
}

.app-details p {
    margin-bottom: 1rem;
}

.description {
    color: var(--light-text);
    line-height: 1.6;
}

.app-actions {
    display: flex;
    gap: 1rem;
    margin-top: 1rem;
}

.visit-btn, .share-btn {
    padding: 0.7rem 1.5rem;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-weight: bold;
    transition: all 0.3s ease;
    flex: 1;
}

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

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

.share-btn {
    background: var(--light-bg);
    color: var(--dark-text);
}

.share-btn:hover {
    background: var(--border-color);
}

/* تنسيق النماذج */
.app-form {
    background: white;
    padding: 2rem;
    border-radius: 20px;
    box-shadow: var(--shadow);
}

.form-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group.full-width {
    grid-column: 1 / -1;
}

label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: var(--dark-text);
    font-size: 1rem;
}

input[type="text"],
input[type="url"],
textarea,
select {
    width: 100%;
    padding: 1rem;
    border: 2px solid var(--border-color);
    border-radius: 10px;
    font-size: 1rem;
    transition: border-color 0.3s ease;
    background: white;
}

input[type="text"]:focus,
input[type="url"]:focus,
textarea:focus,
select:focus {
    outline: none;
    border-color: var(--secondary-color);
    box-shadow: 0 0 0 3px rgba(52, 152, 219, 0.1);
}

textarea {
    resize: vertical;
    min-height: 120px;
}

/* تنسيق أزرار الراديو */
.radio-group {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.radio-label {
    display: flex;
    align-items: center;
    cursor: pointer;
    padding: 0.5rem 1rem;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    transition: all 0.3s ease;
}

.radio-label:hover {
    border-color: var(--secondary-color);
}

.radio-label input {
    display: none;
}

.radio-custom {
    width: 18px;
    height: 18px;
    border: 2px solid var(--border-color);
    border-radius: 50%;
    margin-left: 0.5rem;
    position: relative;
    transition: all 0.3s ease;
}

.radio-label input:checked + .radio-custom {
    border-color: var(--secondary-color);
    background: var(--secondary-color);
}

.radio-label input:checked + .radio-custom::after {
    content: '';
    width: 8px;
    height: 8px;
    background: white;
    border-radius: 50%;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

.radio-label input:checked ~ span:last-child {
    color: var(--secondary-color);
    font-weight: bold;
}

/* تنسيق الأزرار */
.form-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

.btn-primary, .btn-secondary, .btn-tertiary {
    padding: 1rem 2rem;
    border: none;
    border-radius: 10px;
    font-size: 1rem;
    font-weight: bold;
    cursor: pointer;
    transition: all 0.3s ease;
    min-width: 150px;
}

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

.btn-primary:hover {
    background: #219653;
    transform: translateY(-2px);
}

.btn-secondary {
    background: var(--light-bg);
    color: var(--dark-text);
    border: 2px solid var(--border-color);
}

.btn-secondary:hover {
    background: var(--border-color);
    transform: translateY(-2px);
}

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

.btn-tertiary:hover {
    background: #e67e22;
    transform: translateY(-2px);
}

/* تنسيق رسائل الخطأ */
.error-message {
    color: var(--accent-color);
    font-size: 0.9rem;
    margin-top: 0.5rem;
    display: block;
}

small {
    color: var(--light-text);
    font-size: 0.8rem;
    margin-top: 0.5rem;
    display: block;
}

/* معاينة التطبيق */
.app-preview {
    background: white;
    padding: 2rem;
    border-radius: 15px;
    margin-top: 2rem;
    box-shadow: var(--shadow);
}

.app-preview.hidden {
    display: none;
}

.preview-card {
    border: 2px dashed var(--border-color);
    border-radius: 10px;
    padding: 1.5rem;
    margin: 1rem 0;
}

/* تنسيق التذييل */
footer {
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
    margin-top: 4rem;
    padding: 2rem 0;
    text-align: center;
}

.footer-content p {
    margin-bottom: 0.5rem;
    color: var(--light-text);
}

/* تنسيق الاستجابة للشاشات المختلفة */
@media (max-width: 768px) {
    .nav-container {
        flex-direction: column;
        gap: 1rem;
    }
    
    nav ul {
        gap: 1rem;
    }
    
    .hero-content h1 {
        font-size: 2rem;
    }
    
    .apps-container {
        grid-template-columns: 1fr;
    }
    
    .form-grid {
        grid-template-columns: 1fr;
    }
    
    .filters {
        flex-direction: column;
        align-items: stretch;
    }
    
    .form-buttons {
        flex-direction: column;
    }
    
    .btn-primary, .btn-secondary, .btn-tertiary {
        min-width: auto;
    }
}

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

.app-card, .student-card, .stat-card {
    animation: fadeIn 0.6s ease;
}

.no-results, .error {
    text-align: center;
    padding: 3rem;
    background: white;
    border-radius: 15px;
    color: var(--light-text);
    font-size: 1.1rem;
}


/* تنسيق التحميل */
.loading {
    text-align: center;
    padding: 3rem;
    font-size: 1.2rem;
    color: var(--light-text);
    grid-column: 1 / -1;
}

/* تحسين عرض التطبيقات */
.apps-container {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 2rem;
    min-height: 200px;
}

.no-results {
    text-align: center;
    padding: 3rem;
    background: white;
    border-radius: 15px;
    color: var(--light-text);
    font-size: 1.1rem;
    grid-column: 1 / -1;
}

.no-results h3 {
    margin-bottom: 1rem;
    color: var(--accent-color);
}

.app-meta {
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid var(--border-color);
    color: var(--light-text);
    font-size: 0.9rem;
}

/* تنسيق أزرار الإدارة */
#data-management-buttons {
    margin: 20px 0;
}

#data-management-buttons button,
#data-management-buttons label {
    margin: 5px;
    padding: 12px 20px;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-size: 14px;
    font-weight: bold;
    transition: all 0.3s ease;
}

#data-management-buttons button:hover,
#data-management-buttons label:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0,0,0,0.2);
}

/* زر الحذف في بطاقات التطبيقات */
.delete-btn {
    background: #e74c3c !important;
    color: white;
    border: none;
    padding: 8px 15px;
    border-radius: 5px;
    cursor: pointer;
    font-size: 12px;
    margin-left: 5px;
}

.delete-btn:hover {
    background: #c0392b !important;
}

.app-actions {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.app-actions button {
    flex: 1;
    min-width: 80px;
}

/* تنسيق أزرار إدارة CSV */
#csv-management-buttons {
    margin: 20px 0;
}

#csv-management-buttons button,
#csv-management-buttons label {
    margin: 5px;
    padding: 12px 20px;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-size: 14px;
    font-weight: bold;
    transition: all 0.3s ease;
}

#csv-management-buttons button:hover,
#csv-management-buttons label:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0,0,0,0.2);
}

/* زر الحذف في بطاقات التطبيقات */
.delete-btn {
    background: #e74c3c !important;
    color: white;
    border: none;
    padding: 8px 15px;
    border-radius: 5px;
    cursor: pointer;
    font-size: 12px;
    margin-left: 5px;
}

.delete-btn:hover {
    background: #c0392b !important;
}

.app-actions {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.app-actions button {
    flex: 1;
    min-width: 80px;
}


/* زر إعادة التعيين */
#reset-db-btn {
    position: fixed !important;
    top: 10px !important;
    left: 10px !important;
    z-index: 10000 !important;
    padding: 10px 15px !important;
    background: #e74c3c !important;
    color: white !important;
    border: none !important;
    border-radius: 5px !important;
    cursor: pointer !important;
    font-size: 12px !important;
    box-shadow: 0 2px 10px rgba(0,0,0,0.3) !important;
}

#reset-db-btn:hover {
    background: #c0392b !important;
    transform: translateY(-2px) !important;
}

/* زر الحذف في بطاقات التطبيقات */
.delete-btn {
    background: #e74c3c !important;
    color: white !important;
    border: none !important;
    padding: 8px 15px !important;
    border-radius: 5px !important;
    cursor: pointer !important;
    font-size: 12px !important;
    margin-left: 5px !important;
}

.delete-btn:hover {
    background: #c0392b !important;
}

.app-actions {
    display: flex !important;
    gap: 8px !important;
    flex-wrap: wrap !important;
}

.app-actions button {
    flex: 1 !important;
    min-width: 80px !important;
}