/* ======================================
   سيستم التسعير - CSS
   Mobile-First Design
   ====================================== */

:root {
    --primary: #165c80;
    --primary-light: #e8f4f8;
    --primary-dark: #0e3d56;
    --success: #28a745;
    --success-light: #e8f5e9;
    --warning: #f59e0b;
    --warning-light: #fff8e1;
    --danger: #dc3545;
    --danger-light: #fce4e4;
    --info: #17a2b8;
    --gray-50: #f9fafb;
    --gray-100: #f3f4f6;
    --gray-200: #e5e7eb;
    --gray-300: #d1d5db;
    --gray-400: #9ca3af;
    --gray-500: #6b7280;
    --gray-700: #374151;
    --gray-900: #111827;
    --sidebar-width: 260px;
    --topbar-height: 56px;
    --radius: 10px;
    --shadow: 0 1px 3px rgba(0,0,0,0.08);
    --shadow-lg: 0 4px 12px rgba(0,0,0,0.12);
}

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

body {
    font-family: 'Segoe UI', Tahoma, Arial, sans-serif;
    background: var(--gray-100);
    color: var(--gray-900);
    font-size: 14px;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

/* ======================================
   الشريط العلوي
   ====================================== */
.topbar {
    position: fixed;
    top: 0;
    right: 0;
    left: 0;
    height: var(--topbar-height);
    background: var(--primary);
    color: #fff;
    display: flex;
    align-items: center;
    padding: 0 16px;
    z-index: 100;
    gap: 12px;
}

.menu-toggle {
    background: none;
    border: none;
    color: #fff;
    font-size: 22px;
    cursor: pointer;
    padding: 4px 8px;
    border-radius: 6px;
    transition: background 0.2s;
}
.menu-toggle:hover { background: rgba(255,255,255,0.15); }

.topbar-title {
    font-size: 16px;
    font-weight: 600;
    flex: 1;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.topbar-user .user-name {
    font-size: 13px;
    opacity: 0.9;
}

/* ======================================
   القائمة الجانبية
   ====================================== */
.sidebar-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.4);
    z-index: 200;
}
.sidebar-overlay.show { display: block; }

.sidebar {
    position: fixed;
    top: 0;
    right: -280px;
    width: var(--sidebar-width);
    height: 100vh;
    background: #fff;
    z-index: 300;
    transition: right 0.3s ease;
    overflow-y: auto;
    box-shadow: var(--shadow-lg);
}
.sidebar.open { right: 0; }

.sidebar-header {
    padding: 20px;
    background: var(--primary);
    color: #fff;
}
.sidebar-header h2 {
    font-size: 18px;
    font-weight: 600;
}

.sidebar-menu {
    list-style: none;
    padding: 8px 0;
}
.sidebar-menu li a {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 20px;
    color: var(--gray-700);
    text-decoration: none;
    font-size: 14px;
    transition: all 0.2s;
}
.sidebar-menu li a:hover { background: var(--gray-100); }
.sidebar-menu li.active a {
    background: var(--primary-light);
    color: var(--primary);
    font-weight: 600;
    border-right: 3px solid var(--primary);
}
.sidebar-menu .menu-icon { font-size: 18px; }
.sidebar-menu .menu-divider {
    height: 1px;
    background: var(--gray-200);
    margin: 8px 16px;
}

.badge {
    background: var(--danger);
    color: #fff;
    font-size: 11px;
    font-weight: 700;
    padding: 2px 8px;
    border-radius: 12px;
    margin-right: auto;
}
.badge-green { background: var(--success); }

/* ======================================
   المحتوى الرئيسي
   ====================================== */
.content {
    margin-top: var(--topbar-height);
    padding: 16px;
    min-height: calc(100vh - var(--topbar-height));
}

/* ======================================
   البطاقات
   ====================================== */
.card {
    background: #fff;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    margin-bottom: 16px;
}
.card-header {
    padding: 14px 16px;
    border-bottom: 1px solid var(--gray-200);
    font-weight: 600;
    font-size: 15px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
    border-radius: var(--radius) var(--radius) 0 0;
}
.card-body { padding: 16px; }

/* ======================================
   النماذج
   ====================================== */
.form-group {
    margin-bottom: 14px;
}
.form-group label {
    display: block;
    margin-bottom: 4px;
    font-weight: 600;
    font-size: 13px;
    color: var(--gray-700);
}
.form-control {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--gray-300);
    border-radius: 8px;
    font-size: 14px;
    font-family: inherit;
    background: #fff;
    transition: border-color 0.2s;
    -webkit-appearance: none;
}
.form-control:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(22,92,128,0.1);
}
.form-control[readonly] {
    background: var(--gray-100);
    color: var(--gray-500);
}

select.form-control {
    padding-left: 32px;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%236b7280' d='M2 4l4 4 4-4'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: 12px center;
}

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

/* ======================================
   الأزرار
   ====================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 10px 18px;
    border: none;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 600;
    font-family: inherit;
    cursor: pointer;
    transition: all 0.2s;
    white-space: nowrap;
    text-decoration: none;
    -webkit-tap-highlight-color: transparent;
}
.btn:active { transform: scale(0.97); }

.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-dark); }

.btn-success { background: var(--success); color: #fff; }
.btn-success:hover { background: #219a38; }

.btn-warning { background: var(--warning); color: #fff; }
.btn-danger { background: var(--danger); color: #fff; }

.btn-outline {
    background: transparent;
    border: 1px solid var(--gray-300);
    color: var(--gray-700);
}
.btn-outline:hover { background: var(--gray-100); }

.btn-sm { padding: 6px 12px; font-size: 13px; }
.btn-block { width: 100%; }
.btn-group { display: flex; gap: 8px; flex-wrap: wrap; }

/* أزرار التسعير (4 أزرار في صف واحد على الموبايل) */
.pricing-buttons {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px;
    margin: 12px 0;
}
.pricing-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 10px 8px;
    border: 2px solid var(--gray-200);
    border-radius: var(--radius);
    background: #fff;
    cursor: pointer;
    transition: all 0.2s;
    font-family: inherit;
}
.pricing-btn:hover { border-color: var(--primary); background: var(--primary-light); }
.pricing-btn.selected {
    border-color: var(--primary);
    background: var(--primary-light);
    box-shadow: 0 0 0 2px rgba(22,92,128,0.2);
}
.pricing-btn .pricing-label {
    font-size: 12px;
    color: var(--gray-500);
    margin-bottom: 2px;
}
.pricing-btn .pricing-value {
    font-size: 16px;
    font-weight: 700;
    color: var(--primary);
}

/* ======================================
   الجداول (responsive)
   ====================================== */
.table-responsive {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}
table {
    width: 100%;
    border-collapse: collapse;
}
table th, table td {
    padding: 10px 12px;
    text-align: right;
    border-bottom: 1px solid var(--gray-200);
    font-size: 13px;
    white-space: nowrap;
}
table th {
    background: var(--gray-50);
    font-weight: 600;
    color: var(--gray-700);
    position: sticky;
    top: 0;
}
table tr:hover { background: var(--gray-50); }

/* ======================================
   بطاقة الصنف (mobile-friendly)
   ====================================== */
.product-card {
    background: #fff;
    border: 1px solid var(--gray-200);
    border-radius: var(--radius);
    padding: 14px;
    margin-bottom: 12px;
    transition: box-shadow 0.2s;
}
.product-card:hover { box-shadow: var(--shadow-lg); }

.product-card .pc-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 8px;
}
.product-card .pc-name {
    font-weight: 600;
    font-size: 14px;
    color: var(--gray-900);
}
.product-card .pc-code {
    font-size: 12px;
    color: var(--gray-400);
    background: var(--gray-100);
    padding: 2px 8px;
    border-radius: 4px;
}
.product-card .pc-manufacturer {
    font-size: 12px;
    color: var(--primary);
    margin-bottom: 8px;
}
.product-card .pc-cost-row {
    display: flex;
    gap: 16px;
    margin-bottom: 8px;
    flex-wrap: wrap;
}
.product-card .pc-cost-item {
    font-size: 13px;
}
.product-card .pc-cost-item .label {
    color: var(--gray-500);
    font-size: 11px;
}
.product-card .pc-cost-item .value {
    font-weight: 700;
    color: var(--gray-900);
}

/* أسعار الشرائح في بطاقة الصنف */
.tier-prices {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
    gap: 6px;
    margin-top: 10px;
    padding-top: 10px;
    border-top: 1px solid var(--gray-200);
}
.tier-price-item {
    text-align: center;
    padding: 6px 4px;
    background: var(--gray-50);
    border-radius: 6px;
}
.tier-price-item .tier-name {
    font-size: 10px;
    color: var(--gray-500);
    margin-bottom: 2px;
}
.tier-price-item .tier-value {
    font-size: 14px;
    font-weight: 700;
    color: var(--primary);
}

/* ======================================
   حالات الطلب
   ====================================== */
.status-badge {
    display: inline-block;
    padding: 3px 10px;
    border-radius: 12px;
    font-size: 12px;
    font-weight: 600;
}
.status-pending { background: var(--warning-light); color: #92400e; }
.status-approved { background: var(--success-light); color: #166534; }
.status-entered { background: var(--gray-200); color: var(--gray-700); }

/* ======================================
   البحث
   ====================================== */
.search-box {
    position: relative;
    margin-bottom: 16px;
}
.search-box input {
    width: 100%;
    padding: 10px 12px 10px 40px;
    border: 1px solid var(--gray-300);
    border-radius: 8px;
    font-size: 14px;
    font-family: inherit;
}
.search-box input:focus {
    outline: none;
    border-color: var(--primary);
}
.search-box::before {
    content: '🔍';
    position: absolute;
    left: 12px;
    top: 50%;
    transform: translateY(-50%);
    font-size: 16px;
}
.search-results {
    position: absolute;
    top: 100%;
    right: 0;
    left: 0;
    background: #fff;
    border: 1px solid var(--gray-300);
    border-radius: 8px;
    box-shadow: var(--shadow-lg);
    max-height: 300px;
    overflow-y: auto;
    z-index: 50;
    display: none;
}
.search-results.show { display: block; }
.search-results .search-item {
    padding: 10px 14px;
    cursor: pointer;
    border-bottom: 1px solid var(--gray-100);
    display: flex;
    justify-content: space-between;
}
.search-results .search-item:hover { background: var(--primary-light); }
.search-results .search-item .si-name { font-weight: 600; font-size: 13px; }
.search-results .search-item .si-code { font-size: 12px; color: var(--gray-400); }

/* ======================================
   Alerts
   ====================================== */
.alert {
    padding: 12px 16px;
    border-radius: 8px;
    margin-bottom: 16px;
    font-size: 14px;
    display: flex;
    align-items: center;
    gap: 8px;
}
.alert-success { background: var(--success-light); color: #166534; border: 1px solid #a3d9a5; }
.alert-danger { background: var(--danger-light); color: #991b1b; border: 1px solid #f5a5a5; }
.alert-warning { background: var(--warning-light); color: #92400e; border: 1px solid #f5d78e; }
.alert-info { background: var(--primary-light); color: var(--primary-dark); border: 1px solid #b5d4e8; }

/* ======================================
   صفحة تسجيل الدخول
   ====================================== */
.login-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    padding: 16px;
}
.login-card {
    background: #fff;
    border-radius: 16px;
    padding: 32px 24px;
    width: 100%;
    max-width: 380px;
    box-shadow: var(--shadow-lg);
}
.login-card h1 {
    text-align: center;
    color: var(--primary);
    font-size: 22px;
    margin-bottom: 8px;
}
.login-card .subtitle {
    text-align: center;
    color: var(--gray-500);
    font-size: 14px;
    margin-bottom: 24px;
}

/* ======================================
   بطاقات إحصائية
   ====================================== */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
    gap: 12px;
    margin-bottom: 16px;
}
.stat-card {
    background: #fff;
    border-radius: var(--radius);
    padding: 14px;
    box-shadow: var(--shadow);
    text-align: center;
}
.stat-card .stat-value {
    font-size: 24px;
    font-weight: 700;
    color: var(--primary);
}
.stat-card .stat-label {
    font-size: 12px;
    color: var(--gray-500);
    margin-top: 2px;
}

/* ======================================
   Custom input for cost entry
   ====================================== */
.cost-input-group {
    display: flex;
    align-items: center;
    border: 1px solid var(--gray-300);
    border-radius: 8px;
    overflow: hidden;
}
.cost-input-group input {
    flex: 1;
    border: none;
    padding: 10px 12px;
    font-size: 16px;
    font-weight: 600;
    font-family: inherit;
    outline: none;
    min-width: 0;
}
.cost-input-group .currency {
    padding: 10px 12px;
    background: var(--gray-100);
    color: var(--gray-500);
    font-size: 13px;
    font-weight: 600;
    white-space: nowrap;
}

/* ======================================
   Editable tier price inputs
   ====================================== */
.tier-edit-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 8px;
}
.tier-edit-row {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 10px;
    background: var(--gray-50);
    border-radius: 8px;
}
.tier-edit-row .tier-label {
    font-size: 13px;
    font-weight: 600;
    min-width: 70px;
    color: var(--gray-700);
}
.tier-edit-row .tier-rate {
    font-size: 12px;
    color: var(--gray-400);
    min-width: 40px;
}
.tier-edit-row input {
    flex: 1;
    border: 1px solid var(--gray-300);
    border-radius: 6px;
    padding: 6px 8px;
    font-size: 14px;
    font-weight: 600;
    text-align: center;
    font-family: inherit;
    min-width: 0;
}
.tier-edit-row input:focus {
    outline: none;
    border-color: var(--primary);
}

/* ======================================
   Empty state
   ====================================== */
.empty-state {
    text-align: center;
    padding: 40px 20px;
    color: var(--gray-400);
}
.empty-state .empty-icon { font-size: 40px; margin-bottom: 8px; }
.empty-state .empty-text { font-size: 15px; }

/* ======================================
   Loading
   ====================================== */
.loading {
    text-align: center;
    padding: 20px;
    color: var(--gray-400);
}
.spinner {
    display: inline-block;
    width: 24px;
    height: 24px;
    border: 3px solid var(--gray-200);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 0.7s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ======================================
   Modal
   ====================================== */
.modal-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.5);
    z-index: 500;
    align-items: flex-end;
    justify-content: center;
}
.modal-overlay.show { display: flex; }

.modal {
    background: #fff;
    width: 100%;
    max-width: 500px;
    max-height: 90vh;
    border-radius: 16px 16px 0 0;
    overflow-y: auto;
    animation: slideUp 0.3s ease;
}
@keyframes slideUp {
    from { transform: translateY(100%); }
    to { transform: translateY(0); }
}
.modal-header {
    padding: 16px;
    border-bottom: 1px solid var(--gray-200);
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: sticky;
    top: 0;
    background: #fff;
    z-index: 1;
}
.modal-header h3 { font-size: 16px; }
.modal-close {
    background: none;
    border: none;
    font-size: 20px;
    cursor: pointer;
    color: var(--gray-500);
    padding: 4px;
}
.modal-body { padding: 16px; }
.modal-footer {
    padding: 12px 16px;
    border-top: 1px solid var(--gray-200);
    display: flex;
    gap: 8px;
    position: sticky;
    bottom: 0;
    background: #fff;
}

/* ======================================
   Pagination
   ====================================== */
.pagination {
    display: flex;
    justify-content: center;
    gap: 4px;
    margin-top: 16px;
}
.pagination a, .pagination span {
    padding: 6px 12px;
    border: 1px solid var(--gray-300);
    border-radius: 6px;
    font-size: 13px;
    text-decoration: none;
    color: var(--gray-700);
}
.pagination .active {
    background: var(--primary);
    color: #fff;
    border-color: var(--primary);
}

/* ======================================
   Tabs
   ====================================== */
.tabs {
    display: flex;
    gap: 0;
    border-bottom: 2px solid var(--gray-200);
    margin-bottom: 16px;
    overflow-x: auto;
}
.tab {
    padding: 10px 16px;
    font-size: 14px;
    font-weight: 600;
    color: var(--gray-500);
    text-decoration: none;
    border-bottom: 2px solid transparent;
    margin-bottom: -2px;
    white-space: nowrap;
    transition: all 0.2s;
}
.tab:hover { color: var(--primary); }
.tab.active {
    color: var(--primary);
    border-bottom-color: var(--primary);
}

/* ======================================
   Permissions checkboxes
   ====================================== */
.perm-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 6px;
}
.perm-item {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 10px;
    background: var(--gray-50);
    border-radius: 6px;
}
.perm-item input[type="checkbox"] {
    width: 18px;
    height: 18px;
    accent-color: var(--primary);
}
.perm-item label {
    font-size: 13px;
    cursor: pointer;
}

/* ======================================
   Desktop (768px+)
   ====================================== */
@media (min-width: 768px) {
    .sidebar {
        right: 0;
        top: var(--topbar-height);
        height: calc(100vh - var(--topbar-height));
        box-shadow: none;
        border-left: 1px solid var(--gray-200);
    }
    .sidebar-header { display: none; }
    .sidebar-overlay { display: none !important; }
    .menu-toggle { display: none; }

    .content {
        margin-right: var(--sidebar-width);
        padding: 24px;
    }

    .modal-overlay { align-items: center; }
    .modal {
        border-radius: 16px;
        max-height: 85vh;
    }

    .pricing-buttons {
        grid-template-columns: repeat(4, 1fr);
    }

    .form-row {
        grid-template-columns: 1fr 1fr 1fr;
    }

    .tier-edit-grid {
        grid-template-columns: 1fr 1fr;
    }

    .perm-grid {
        grid-template-columns: 1fr 1fr;
    }
}