/* ==========================================================================
   إعدادات عامة وتصميم متجاوب لجميع الشاشات (الهاتف، التبلت، الحواسيب)
   ========================================================================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Cairo', sans-serif;
}

:root {
    --primary-color: #2c3e50;
    --secondary-color: #34495e;
    --accent-color: #3498db;
    --accent-hover: #2980b9;
    --text-color: #ecf0f1;
    --bg-color: #f4f6f9;
    --sidebar-width: 280px;
    --card-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
    --transition-speed: 0.3s;
}

body {
    display: flex;
    min-height: 100vh;
    background-color: var(--bg-color);
    overflow-x: hidden;
    color: #2c3e50;
}

/* ==========================================================================
   القائمة الجانبية (Sidebar) وطبقة التظليل (Overlay)
   ========================================================================== */

/* طبقة التظليل السوداء خلف القائمة عند الفتح في الهواتف والتابلت */
.sidebar-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(2px);
    z-index: 999;
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-speed) ease, visibility var(--transition-speed) ease;
}

.sidebar-overlay.active {
    opacity: 1;
    visibility: visible;
}

/* القائمة الجانبية افتراضياً (للشاشات الكبيرة) */
.sidebar {
    width: var(--sidebar-width);
    background-color: var(--primary-color);
    color: var(--text-color);
    height: 100vh;
    position: fixed;
    right: 0;
    top: 0;
    transition: right var(--transition-speed) ease-in-out;
    z-index: 1000;
    box-shadow: -2px 0 10px rgba(0, 0, 0, 0.15);
    display: flex;
    flex-direction: column;
}

.sidebar-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px;
    background-color: var(--secondary-color);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    min-height: 70px;
}

.sidebar-header h2 {
    font-size: 1.25rem;
    font-weight: 700;
    white-space: nowrap;
}

.close-btn {
    background: rgba(255, 255, 255, 0.1);
    border: none;
    color: var(--text-color);
    font-size: 1.2rem;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    cursor: pointer;
    display: none; /* تظهر فقط في الهواتف والتابلت */
    align-items: center;
    justify-content: center;
    transition: background 0.2s ease;
}

.close-btn:hover {
    background: rgba(255, 255, 255, 0.2);
}

.nav-links {
    list-style: none;
    margin-top: 15px;
    overflow-y: auto;
    flex: 1;
}

.nav-links li {
    padding: 0;
}

.nav-links a {
    display: flex;
    align-items: center;
    padding: 14px 20px;
    color: var(--text-color);
    text-decoration: none;
    transition: background 0.2s, padding-right 0.2s;
    font-size: 0.95rem;
}

.nav-links a i {
    margin-left: 14px;
    font-size: 1.15rem;
    width: 24px;
    text-align: center;
}

.nav-links a:hover,
.nav-links a.active {
    background-color: var(--accent-color);
    padding-right: 25px;
}

/* ==========================================================================
   المحتوى الرئيسي (Main Content)
   ========================================================================== */
.main-content {
    flex: 1;
    margin-right: var(--sidebar-width);
    transition: margin-right var(--transition-speed) ease-in-out;
    display: flex;
    flex-direction: column;
    min-width: 0; /* منع الجداول والعناصر من كسر المرونة */
}

/* الهيدر العلوي */
.top-header {
    background-color: #ffffff;
    padding: 15px 25px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
    display: flex;
    align-items: center;
    min-height: 70px;
}

.toggle-btn {
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--primary-color);
    cursor: pointer;
    margin-left: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 8px;
    transition: background 0.2s ease;
}

.toggle-btn:hover {
    background-color: rgba(0, 0, 0, 0.05);
}

.top-header h1 {
    font-size: 1.4rem;
    color: var(--primary-color);
    font-weight: 700;
}

.content-area {
    padding: 25px;
    flex: 1;
}

/* حالة الطي في الشاشات الكبيرة (Desktop collapsed) */
@media (min-width: 1025px) {
    .sidebar.collapsed {
        right: calc(-1 * var(--sidebar-width));
    }
    .main-content.collapsed {
        margin-right: 0;
    }
}

/* ==========================================================================
   تنسيق الاستمارات (Forms) والأزرار (Buttons)
   ========================================================================== */
.form-container {
    background: #ffffff;
    border-radius: 12px;
    padding: 25px;
    box-shadow: var(--card-shadow);
    margin-bottom: 25px;
}

.form-header {
    margin-bottom: 25px;
    border-bottom: 2px solid var(--bg-color);
    padding-bottom: 15px;
    color: var(--primary-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 15px;
}

.form-header h2 {
    font-size: 1.3rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 10px;
}

.form-header p {
    font-size: 0.9rem;
    color: #7f8c8d;
    margin-top: 4px;
}

.form-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 20px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.form-group label {
    font-weight: 600;
    color: var(--secondary-color);
    font-size: 0.95rem;
}

.form-group input[type='text'],
.form-group input[type='number'],
.form-group input[type='date'],
.form-group select,
.form-group textarea {
    padding: 12px 15px;
    border: 1px solid #dcdfe6;
    border-radius: 8px;
    font-size: 0.95rem;
    transition: border-color 0.2s, box-shadow 0.2s;
    background-color: #fcfcfc;
    width: 100%;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    border-color: var(--accent-color);
    box-shadow: 0 0 0 3px rgba(52, 152, 219, 0.15);
    outline: none;
    background-color: #fff;
}

.form-group textarea {
    resize: vertical;
    min-height: 90px;
}

.checkbox-group {
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
    align-items: center;
}

.checkbox-item {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    font-size: 0.95rem;
    user-select: none;
}

.checkbox-item input[type='checkbox'],
.checkbox-item input[type='radio'] {
    width: 20px;
    height: 20px;
    cursor: pointer;
    accent-color: var(--accent-color);
}

.radio-group {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
}

/* الأزرار */
.btn {
    padding: 10px 22px;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 600;
    font-size: 0.95rem;
    transition: all 0.2s ease;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    justify-content: center;
    min-height: 42px;
    text-decoration: none;
}

.btn:active {
    transform: scale(0.98);
}

.btn-primary {
    background: linear-gradient(135deg, var(--accent-color), var(--accent-hover));
    color: #ffffff;
    box-shadow: 0 4px 10px rgba(52, 152, 219, 0.25);
}

.btn-primary:hover {
    background: linear-gradient(135deg, var(--accent-hover), #1f618d);
}

.btn-secondary {
    background: #e2e8f0;
    color: var(--primary-color);
}

.btn-secondary:hover {
    background: #cbd5e1;
}

.btn-danger {
    background: #e74c3c;
    color: #ffffff;
}

.btn-danger:hover {
    background: #c0392b;
}

.action-buttons {
    display: flex;
    gap: 12px;
    margin-top: 25px;
    justify-content: flex-end;
    flex-wrap: wrap;
}

.section-title {
    margin-top: 30px;
    margin-bottom: 15px;
    color: var(--primary-color);
    font-size: 1.2rem;
    border-bottom: 2px solid var(--accent-color);
    padding-bottom: 8px;
    display: inline-block;
}

/* ==========================================================================
   تصميم الجداول المتجاوبة (Responsive Data Tables)
   ========================================================================== */
.table-responsive {
    width: 100%;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    border: 1px solid #e2e8f0;
    border-radius: 8px;
    margin-top: 20px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.02);
}

/* شريط تمرير أنيق للجداول في الموبايل والتابلت */
.table-responsive::-webkit-scrollbar {
    height: 8px;
}
.table-responsive::-webkit-scrollbar-track {
    background: #f1f5f9;
}
.table-responsive::-webkit-scrollbar-thumb {
    background: #cbd5e1;
    border-radius: 4px;
}
.table-responsive::-webkit-scrollbar-thumb:hover {
    background: #94a3b8;
}

.data-table {
    width: 100%;
    min-width: 800px; /* يضمن عدم انكماش أعمدة الجدول في الموبايل والتابلت */
    border-collapse: collapse;
}

.data-table th,
.data-table td {
    padding: 12px 16px;
    text-align: right;
    border-bottom: 1px solid #e2e8f0;
    vertical-align: middle;
}

.data-table th {
    background-color: var(--primary-color);
    color: #ffffff;
    font-weight: 600;
    font-size: 0.95rem;
    white-space: nowrap;
}

.data-table tr:nth-child(even) {
    background-color: #f8fafc;
}

.data-table tr:hover {
    background-color: #f1f5f9;
}

.data-table input[type='text'],
.data-table input[type='number'] {
    width: 100%;
    padding: 8px 10px;
    border: 1px solid #dcdfe6;
    border-radius: 6px;
    font-size: 0.9rem;
}

/* ==========================================================================
   تصميم صفحة قيد التطوير
   ========================================================================== */
.under-dev-container {
    background-color: #ffffff;
    padding: 50px 20px;
    border-radius: 12px;
    box-shadow: var(--card-shadow);
    text-align: center;
    margin-top: 20px;
}

.under-dev-icon {
    font-size: 4rem;
    color: #e67e22;
    margin-bottom: 20px;
}

.under-dev-title {
    color: var(--primary-color);
    font-size: 1.8rem;
    margin-bottom: 10px;
}

.under-dev-desc {
    color: #7f8c8d;
    font-size: 1.05rem;
}

/* ==========================================================================
   تكييف التصميم للشاشات المتوسطة والصغيرة (التبلت الهواتف <= 1024px)
   ========================================================================== */
@media (max-width: 1024px) {
    /* تحويل القائمة الجانبية إلى Drawer يتم سحبه من اليمين بشكل مباشر بدون transform بعيد */
    .sidebar {
        width: 280px;
        max-width: 85vw;
        right: -300px; /* إخفاء خارج الشاشة يميناً بشكل مضمون 100% في RTL */
        top: 0;
        bottom: 0;
        height: 100vh;
        transform: none !important;
    }

    /* إظهار القائمة الجانبية عند التفعيل */
    .sidebar.active {
        right: 0 !important;
    }

    .close-btn {
        display: flex;
    }

    /* المحتوى الرئيسي يتوسع بالكامل في التبلت والموبايل */
    .main-content {
        margin-right: 0 !important;
        width: 100%;
    }

    .content-area {
        padding: 15px;
    }

    /* ضبط شبكة النماذج للتبلت */
    .form-grid {
        grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
        gap: 15px;
    }
}

/* ==========================================================================
   تكييف التصميم لشاشات الهواتف المحمولة (<= 576px)
   ========================================================================== */
@media (max-width: 576px) {
    .top-header {
        padding: 12px 15px;
    }

    .top-header h1 {
        font-size: 1.15rem;
    }

    .form-container {
        padding: 15px;
        border-radius: 10px;
    }

    .form-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 12px;
    }

    .form-header .btn {
        width: 100%;
    }

    .form-grid {
        grid-template-columns: 1fr;
        gap: 12px;
    }

    .form-group input,
    .form-group select,
    .form-group textarea {
        font-size: 16px; /* منع الزوم التلقائي في متصفحات الموبايل */
        padding: 10px 12px;
    }

    .action-buttons {
        flex-direction: column;
        width: 100%;
    }

    .action-buttons .btn {
        width: 100%;
    }

    .checkbox-group,
    .radio-group {
        gap: 12px;
    }

    .section-title {
        font-size: 1.1rem;
        margin-top: 20px;
    }
}