/* Modern CSS Variables & Styling System */
:root {
    --bg-primary: #0b0f19;
    --bg-secondary: #121826;
    --bg-tertiary: #1f293d;
    
    --accent-primary: #8b5cf6; /* Violet */
    --accent-secondary: #3b82f6; /* Blue */
    --accent-cyan: #06b6d4; /* Cyan */
    
    --text-primary: #f3f4f6;
    --text-secondary: #9ca3af;
    --text-muted: #6b7280;
    
    --success: #10b981; /* Emerald */
    --danger: #ef4444; /* Red */
    --warning: #f59e0b; /* Amber */
    
    --border-color: rgba(255, 255, 255, 0.07);
    --border-hover: rgba(255, 255, 255, 0.15);
    
    --glass-bg: rgba(18, 24, 38, 0.75);
    --glass-blur: blur(16px);
    --shadow-premium: 0 20px 40px -15px rgba(0, 0, 0, 0.5);
    
    --font-ar: 'Tajawal', sans-serif;
    --font-en: 'Outfit', sans-serif;

    --row-hover-bg: rgba(255, 255, 255, 0.015);
    --row-hover-bg-strong: #171d2b;
    --overlay-bg: rgba(11, 15, 25, 0.6);
    --modal-overlay-bg: rgba(0, 0, 0, 0.6);
    --toast-footer-bg: rgba(0, 0, 0, 0.15);

    transition: background-color 0.25s ease, color 0.25s ease;
}

[data-theme="light"] {
    --bg-primary: #f4f5f7;
    --bg-secondary: #ffffff;
    --bg-tertiary: #eef0f4;

    --accent-primary: #7c3aed; /* Violet */
    --accent-secondary: #2563eb; /* Blue */
    --accent-cyan: #0891b2; /* Cyan */

    --text-primary: #1f2430;
    --text-secondary: #555f72;
    --text-muted: #8a93a6;

    --success: #059669;
    --danger: #dc2626;
    --warning: #d97706;

    --border-color: rgba(15, 23, 42, 0.08);
    --border-hover: rgba(15, 23, 42, 0.18);

    --glass-bg: rgba(255, 255, 255, 0.75);
    --glass-blur: blur(16px);
    --shadow-premium: 0 20px 40px -15px rgba(15, 23, 42, 0.15);

    --row-hover-bg: rgba(15, 23, 42, 0.02);
    --row-hover-bg-strong: #eef0f4;
    --overlay-bg: rgba(244, 245, 247, 0.6);
    --modal-overlay-bg: rgba(15, 23, 42, 0.35);
    --toast-footer-bg: rgba(15, 23, 42, 0.04);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    scrollbar-width: thin;
    scrollbar-color: var(--bg-tertiary) var(--bg-primary);
}

/* Scrollbar Customization */
::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}
::-webkit-scrollbar-track {
    background: var(--bg-primary);
}
::-webkit-scrollbar-thumb {
    background: var(--bg-tertiary);
    border-radius: 10px;
}
::-webkit-scrollbar-thumb:hover {
    background: var(--accent-primary);
}

body {
    background-color: var(--bg-primary);
    color: var(--text-primary);
    font-family: var(--font-ar);
    min-height: 100vh;
    overflow-x: hidden;
    line-height: 1.6;
}

.app-container {
    display: flex;
    flex-direction: column;
    height: 100vh;
}

/* Header Design */
.app-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 2rem;
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    border-bottom: 1px solid var(--border-color);
    z-index: 10;
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.2);
}

.header-logo {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.logo-icon {
    font-size: 2.2rem;
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary), var(--accent-cyan));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    filter: drop-shadow(0 2px 10px rgba(139, 92, 246, 0.4));
}

.logo-text h1 {
    font-size: 1.3rem;
    font-weight: 700;
    letter-spacing: -0.5px;
    color: var(--text-primary);
}

.logo-text .subtext {
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 0.8rem;
}

/* Workspace Layout */
.app-workspace {
    display: flex;
    flex: 1;
    overflow: hidden;
}

/* Sidebar Design */
.sidebar {
    width: 280px;
    background-color: var(--bg-secondary);
    border-left: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    overflow-y: auto;
    z-index: 5;
}

.sidebar-title {
    display: flex;
    align-items: center;
    gap: 0.8rem;
    padding: 1.5rem;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-primary);
}

.sidebar-title h2 {
    font-size: 1rem;
    font-weight: 700;
}

.sidebar-title i {
    color: var(--accent-primary);
}

.table-list {
    list-style: none;
    padding: 1rem 0.5rem;
    flex: 1;
}

.sidebar-loading {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.8rem;
    padding: 2rem;
    color: var(--text-muted);
}

.table-item {
    padding: 0.8rem 1rem;
    margin-bottom: 0.4rem;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: space-between;
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-weight: 500;
    border: 1px solid transparent;
}

.table-item:hover {
    background-color: rgba(255, 255, 255, 0.03);
    color: var(--text-primary);
    border-color: rgba(255, 255, 255, 0.05);
}

.table-item.active {
    background: linear-gradient(135deg, rgba(139, 92, 246, 0.1), rgba(59, 130, 246, 0.1));
    color: var(--text-primary);
    border-color: rgba(139, 92, 246, 0.3);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
}

.table-item-actions {
    opacity: 0;
    transition: opacity 0.2s ease;
}

.table-item:hover .table-item-actions {
    opacity: 1;
}

.delete-table-btn {
    background: none;
    border: none;
    color: var(--danger);
    cursor: pointer;
    font-size: 0.85rem;
    padding: 2px 5px;
    border-radius: 4px;
}

.delete-table-btn:hover {
    background-color: rgba(239, 68, 68, 0.1);
}

.sidebar-footer {
    padding: 1rem 1.5rem;
    border-top: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.status-indicator {
    width: 8px;
    height: 8px;
    border-radius: 50%;
}

.status-indicator.online {
    background-color: var(--success);
    box-shadow: 0 0 8px var(--success);
}

/* Main Content Panel */
.main-content {
    flex: 1;
    overflow-y: auto;
    padding: 2rem;
    display: flex;
    flex-direction: column;
}

/* Welcome Panel */
.welcome-panel {
    display: flex;
    justify-content: center;
    align-items: center;
    flex: 1;
}

.welcome-card {
    text-align: center;
    max-width: 500px;
    padding: 3rem;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    box-shadow: var(--shadow-premium);
}

.welcome-icon {
    font-size: 4rem;
    background: linear-gradient(135deg, var(--success), var(--accent-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 1.5rem;
}

.welcome-card h2 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.welcome-card p {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

/* Table View Panel */
.table-panel {
    display: flex;
    flex-direction: column;
    flex: 1;
    gap: 1.5rem;
}

.panel-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.table-meta {
    display: flex;
    align-items: center;
    gap: 0.8rem;
}

.table-meta h2 {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--text-primary);
}

.badge {
    background-color: var(--bg-tertiary);
    color: var(--text-secondary);
    padding: 0.25rem 0.6rem;
    border-radius: 20px;
    font-size: 0.8rem;
    border: 1px solid var(--border-color);
}

.panel-actions {
    display: flex;
    align-items: center;
    gap: 0.8rem;
    flex-wrap: wrap;
}

/* Search Box design */
.search-box {
    position: relative;
    width: 280px;
}

.search-box input {
    width: 100%;
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 0.6rem 2.5rem 0.6rem 1rem;
    color: var(--text-primary);
    font-family: var(--font-ar);
    font-size: 0.9rem;
    transition: all 0.2s ease;
}

.search-box input:focus {
    outline: none;
    border-color: var(--accent-primary);
    box-shadow: 0 0 10px rgba(139, 92, 246, 0.2);
}

.search-icon {
    position: absolute;
    top: 50%;
    right: 1rem;
    transform: translateY(-50%);
    color: var(--text-muted);
}

.clear-search-btn {
    position: absolute;
    top: 50%;
    left: 0.8rem;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    padding: 2px;
}

.clear-search-btn:hover {
    color: var(--text-primary);
}

/* Table Grid Component */
.table-container {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    overflow-x: auto;
    flex: 1;
    position: relative;
    box-shadow: var(--shadow-premium);
}

table {
    width: 100%;
    border-collapse: collapse;
    text-align: right;
    font-size: 0.85rem;
}

th {
    background-color: var(--bg-tertiary);
    color: var(--text-primary);
    font-weight: 700;
    padding: 1rem;
    position: sticky;
    top: 0;
    z-index: 1;
    border-bottom: 2px solid var(--border-color);
    white-space: nowrap;
}

td {
    padding: 1rem;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-secondary);
    max-width: 250px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    vertical-align: middle;
}

tr:hover td {
    background-color: rgba(255, 255, 255, 0.015);
    color: var(--text-primary);
}

/* Actions Column cell */
.row-actions-cell {
    display: flex;
    gap: 0.5rem;
    justify-content: center;
    position: sticky;
    left: 0;
    background-color: var(--bg-secondary);
    box-shadow: -5px 0 10px rgba(0, 0, 0, 0.15);
}

tr:hover .row-actions-cell {
    background-color: #171d2b;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.6rem 1.2rem;
    border-radius: 8px;
    font-family: var(--font-ar);
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    border: 1px solid transparent;
}

.btn-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    border-radius: 6px;
    cursor: pointer;
    background-color: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    transition: all 0.2s ease;
}

.btn-icon:hover {
    background-color: var(--accent-primary);
    color: var(--text-primary);
    border-color: var(--accent-primary);
}

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

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

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

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(139, 92, 246, 0.4);
}

.btn-gradient {
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    border: none;
}

.btn-secondary {
    background-color: var(--bg-tertiary);
    color: var(--text-primary);
    border-color: var(--border-color);
}

.btn-secondary:hover {
    background-color: rgba(255, 255, 255, 0.05);
    border-color: var(--border-hover);
}

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

.btn-success:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(16, 185, 129, 0.4);
}

/* Pagination Footer */
.pagination-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem;
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-top: none;
    border-radius: 0 0 12px 12px;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.pagination-controls {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.page-numbers {
    color: var(--text-primary);
}

/* Empty Grid State */
.empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 4rem 2rem;
    color: var(--text-muted);
    text-align: center;
}

.empty-state i {
    font-size: 3rem;
    margin-bottom: 1rem;
    color: var(--bg-tertiary);
}

.empty-state h3 {
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
}

/* Modals */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(8px);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 100;
    animation: fadeIn 0.25s ease-out;
}

.modal-card {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    width: 650px;
    max-width: 95%;
    max-height: 90vh;
    display: flex;
    flex-direction: column;
    box-shadow: var(--shadow-premium);
    animation: slideUp 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem;
    border-bottom: 1px solid var(--border-color);
}

.modal-header h2 {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--text-primary);
}

.btn-close {
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 1.8rem;
    cursor: pointer;
    line-height: 1;
}

.btn-close:hover {
    color: var(--text-primary);
}

.modal-body {
    padding: 1.5rem;
    overflow-y: auto;
}

.modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: 0.8rem;
    padding: 1.2rem 1.5rem;
    border-top: 1px solid var(--border-color);
    background-color: rgba(0, 0, 0, 0.15);
    border-radius: 0 0 16px 16px;
}

/* Form Styling */
.form-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.2rem;
}

@media (max-width: 600px) {
    .form-grid {
        grid-template-columns: 1fr;
    }
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
}

.form-group.full-width {
    grid-column: span 2;
}

@media (max-width: 600px) {
    .form-group.full-width {
        grid-column: span 1;
    }
}

.form-group label {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-secondary);
}

.form-group input, .form-group textarea, .form-group select {
    background-color: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 0.6rem 0.8rem;
    color: var(--text-primary);
    font-family: var(--font-ar);
    font-size: 0.9rem;
    transition: all 0.2s ease;
}

.form-group input:focus, .form-group textarea:focus, .form-group select:focus {
    outline: none;
    border-color: var(--accent-primary);
    box-shadow: 0 0 8px rgba(139, 92, 246, 0.15);
}

/* Floating Toasts */
.toast-container {
    position: fixed;
    bottom: 2rem;
    left: 2rem;
    display: flex;
    flex-direction: column;
    gap: 0.8rem;
    z-index: 1000;
}

.toast {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-right: 4px solid var(--accent-primary);
    padding: 1rem 1.5rem;
    border-radius: 8px;
    color: var(--text-primary);
    box-shadow: var(--shadow-premium);
    display: flex;
    align-items: center;
    gap: 0.8rem;
    font-size: 0.9rem;
    font-weight: 500;
    min-width: 280px;
    animation: slideInLeft 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.toast.success {
    border-right-color: var(--success);
}

.toast.danger {
    border-right-color: var(--danger);
}

.toast.success i {
    color: var(--success);
}

.toast.danger i {
    color: var(--danger);
}

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

@keyframes slideUp {
    from { transform: translateY(30px); opacity: 0; }
    to { transform: translateY(0); opacity: 1; }
}

@keyframes slideInLeft {
    from { transform: translateX(-100%); opacity: 0; }
    to { transform: translateX(0); opacity: 1; }
}

/* Table Loading overlay */
.table-loading-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(11, 15, 25, 0.6);
    backdrop-filter: blur(2px);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 10;
}

.spinner {
    font-size: 2.5rem;
    color: var(--accent-primary);
    animation: fa-spin 1s infinite linear;
}

/* ─── Sortable Column Headers ───────────────────────────── */
th.sortable-header {
    cursor: pointer;
    user-select: none;
    transition: background-color 0.2s ease, color 0.2s ease;
}

th.sortable-header:hover {
    background-color: rgba(139, 92, 246, 0.12);
    color: var(--text-primary);
}

th.sortable-header.sorted {
    background: linear-gradient(135deg, rgba(139, 92, 246, 0.18), rgba(59, 130, 246, 0.12));
    color: var(--accent-primary);
    border-bottom-color: var(--accent-primary);
}

th.sortable-header span {
    vertical-align: middle;
}

.sort-arrow {
    font-size: 0.75rem;
    margin-right: 0.35rem;
    opacity: 0.3;
    transition: opacity 0.2s ease, color 0.2s ease;
    vertical-align: middle;
}

.sort-arrow.active {
    opacity: 1;
    color: var(--accent-primary);
}

th.sortable-header:hover .sort-arrow {
    opacity: 0.7;
}

/* ─── Column Tags (New Table Modal) ─────────────────────── */
.col-tag-list {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-top: 0.5rem;
}

.col-tag {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    background-color: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 0.3rem 0.6rem;
    font-size: 0.85rem;
    color: var(--text-primary);
}

.col-tag button {
    background: none;
    border: none;
    color: var(--danger);
    cursor: pointer;
    font-size: 1rem;
    line-height: 1;
    padding: 0;
}

/* ─── Row Selection Checkbox Column ─────────────────────── */
.row-checkbox-cell {
    position: sticky;
    right: 0;
    background-color: var(--bg-secondary);
    text-align: center;
    box-shadow: 5px 0 10px rgba(0, 0, 0, 0.15);
}

tr:hover .row-checkbox-cell {
    background-color: #171d2b;
}

th.row-checkbox-header {
    position: sticky;
    right: 0;
    z-index: 2;
    background: var(--bg-tertiary);
    text-align: center;
}

.row-checkbox, .select-all-checkbox {
    width: 16px;
    height: 16px;
    cursor: pointer;
    accent-color: var(--accent-primary);
}
.per-page-control {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.per-page-select {
    background-color: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    color: var(--text-primary);
    padding: 0.3rem 0.5rem;
    font-family: var(--font-ar);
    font-size: 0.85rem;
    cursor: pointer;
    transition: border-color 0.2s ease;
}

.per-page-select:focus {
    outline: none;
    border-color: var(--accent-primary);
}

.per-page-select:hover {
    border-color: var(--border-hover);
}