:root {
    --bg-color: #0f172a;
    --card-bg: #1e293b;
    --card-bg-hover: #334155;
    --header-bg: rgba(30, 41, 59, 0.8);
    --text-primary: #f1f5f9;
    --text-secondary: #94a3b8;
    --accent: #3b82f6;
    --accent-gradient: linear-gradient(135deg, #3b82f6 0%, #2563eb 100%);
    --accent-hover: #1d4ed8;
    --border: #334155;
    --success: #10b981;
    --error: #ef4444;
    --danger: #ef4444;
    --font-family: 'Inter', system-ui, -apple-system, sans-serif;
    --font-mono: 'JetBrains Mono', monospace;
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
}

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

body {
    background-color: var(--bg-color);
    background-image: radial-gradient(circle at top right, rgba(59, 130, 246, 0.1), transparent 40%),
        radial-gradient(circle at bottom left, rgba(16, 185, 129, 0.05), transparent 40%);
    color: var(--text-primary);
    font-family: var(--font-family);
    height: 100vh;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    -webkit-font-smoothing: antialiased;
}

/* Header */
header {
    background-color: var(--header-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
    padding: 1rem 2rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    box-shadow: var(--shadow-sm);
    z-index: 20;
}

.logo {
    font-weight: 700;
    font-size: 1.25rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    color: var(--text-primary);
    letter-spacing: -0.025em;
}

.logo svg {
    color: var(--accent);
    filter: drop-shadow(0 0 8px rgba(59, 130, 246, 0.5));
    width: 28px;
    height: 28px;
}

.user-info {
    font-size: 0.875rem;
    color: var(--text-secondary);
    background: rgba(255, 255, 255, 0.05);
    padding: 0.5rem 1rem;
    border-radius: 9999px;
    border: 1px solid var(--border);
}

.user-info strong {
    color: var(--text-primary);
}

/* Main Layout */
.container {
    display: flex;
    flex: 1;
    overflow: hidden;
}

/* Sidebar (History) */
.sidebar {
    width: 280px;
    background-color: rgba(30, 41, 59, 0.5);
    border-right: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    transition: width 0.3s ease;
    backdrop-filter: blur(5px);
}

.sidebar-header {
    padding: 1.25rem 1rem;
    border-bottom: 1px solid var(--border);
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-weight: 600;
    color: var(--text-secondary);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.history-list {
    flex: 1;
    overflow-y: auto;
    padding: 0.75rem;
}

.history-item {
    padding: 0.875rem;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s ease;
    margin-bottom: 0.5rem;
    border: 1px solid transparent;
    background-color: transparent;
}

.history-item:hover {
    background-color: var(--card-bg-hover);
    border-color: var(--border);
    transform: translateX(4px);
    box-shadow: var(--shadow-sm);
}

.history-query {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    margin-bottom: 0.25rem;
}

/* Collapsible History */
.chevron-icon {
    transform: rotate(0deg);
}

.sidebar-header.collapsed .chevron-icon {
    transform: rotate(-90deg);
}

.history-list {
    transition: all 0.3s ease-in-out;
    max-height: 500px;
    /* Arbitrary large height */
    overflow-y: auto;
    opacity: 1;
}

.history-list.collapsed {
    max-height: 0;
    opacity: 0;
    padding: 0;
    margin: 0;
    overflow: hidden;
}

.history-meta {
    font-size: 0.7rem;
    color: var(--text-secondary);
    display: flex;
    justify-content: flex-end;
}

/* Quick Access Sidebar Styles */
.icon-btn {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 4px;
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s;
}

.icon-btn:hover {
    color: var(--text-primary);
    background-color: rgba(255, 255, 255, 0.1);
}

.quick-table-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.75rem;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s ease;
    margin-bottom: 0.25rem;
    color: var(--text-primary);
    font-size: 0.875rem;
}

.quick-table-item .actions {
    display: flex;
    gap: 0.25rem;
}

.quick-table-item:hover {
    background-color: var(--card-bg-hover);
}

.quick-table-item span {
    font-family: var(--font-mono);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.delete-btn {
    opacity: 0;
    transition: opacity 0.2s;
    padding: 2px;
}

.quick-table-item:hover .delete-btn {
    opacity: 1;
    /* Show delete button on hover */
}

.quick-table-item.dragging {
    opacity: 0.5;
    background-color: var(--card-bg-hover);
    border: 1px dashed var(--accent);
}

.quick-table-item.drag-over {
    border-top: 2px solid var(--accent);
}

/* History delete button follows similar pattern */
.history-item {
    position: relative;
}

.history-item .delete-btn {
    position: absolute;
    /* Position relative to history item */
    right: 0.5rem;
    top: 0.5rem;
    background-color: var(--card-bg);
    /* Add bg to stand out */
    box-shadow: -2px 0 4px rgba(0, 0, 0, 0.2);
}

.history-item:hover .delete-btn {
    opacity: 1;
}

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

/* Main Content */
main {
    flex: 1;
    display: flex;
    flex-direction: column;
    padding: 0;
    overflow: hidden;
    position: relative;
    background: radial-gradient(circle at 50% 100%, rgba(59, 130, 246, 0.03), transparent 50%);
}

.editor-section {
    padding: 1.5rem;
    background-color: transparent;
    border-bottom: 1px solid var(--border);
    flex-shrink: 0;
}

/* Database Selector */
.db-selector-bar {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 0.75rem;
    padding: 0.5rem 0.75rem;
    background-color: rgba(30, 41, 59, 0.6);
    border: 1px solid var(--border);
    border-radius: 10px;
    border-left: 3px solid var(--accent);
}

.db-selector-label {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.03em;
    white-space: nowrap;
}

.db-selector-label svg {
    color: var(--accent);
}

.db-selector-bar select {
    flex: 1;
    background-color: var(--bg-color);
    color: var(--text-primary);
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 0.4rem 0.75rem;
    font-family: var(--font-mono);
    font-size: 0.85rem;
    outline: none;
    cursor: pointer;
    transition: border-color 0.2s, box-shadow 0.2s;
    appearance: auto;
}

.db-selector-bar select:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15);
}

.db-selector-bar select:hover {
    border-color: var(--text-secondary);
}

.db-selector-bar .icon-btn {
    flex-shrink: 0;
}

.sql-editor-container {
    position: relative;
    border: 1px solid var(--border);
    border-radius: 12px;
    background-color: var(--card-bg);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
}

.sql-editor-container:focus-within {
    border-color: var(--accent);
    box-shadow: 0 0 0 4px rgba(59, 130, 246, 0.15);
    transform: translateY(-1px);
}

textarea#sqlInput {
    width: 100%;
    min-height: 140px;
    max-height: 350px;
    padding: 1.25rem;
    border: none;
    background: transparent;
    color: var(--text-primary);
    font-family: var(--font-mono);
    font-size: 0.95rem;
    line-height: 1.6;
    resize: vertical;
    outline: none;
}

textarea#sqlInput::placeholder {
    color: rgba(148, 163, 184, 0.5);
}

.editor-actions {
    display: flex;
    justify-content: flex-end;
    padding: 0.75rem 1rem;
    border-top: 1px solid var(--border);
    gap: 0.75rem;
    background-color: rgba(15, 23, 42, 0.3);
}

.btn {
    padding: 0.5rem 1.25rem;
    border-radius: 8px;
    font-weight: 500;
    font-size: 0.875rem;
    cursor: pointer;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    border: none;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    outline: none;
    position: relative;
    overflow: hidden;
}

.btn-primary {
    background: var(--accent-gradient);
    color: white;
    box-shadow: 0 2px 4px rgba(59, 130, 246, 0.3);
}

.btn-primary:not(:disabled):hover {
    box-shadow: 0 4px 12px rgba(59, 130, 246, 0.5);
    transform: translateY(-1px);
}

.btn-primary:active {
    transform: translateY(0);
}

.btn-secondary {
    background-color: transparent;
    color: var(--text-secondary);
    border: 1px solid var(--border);
}

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

.btn:disabled {
    opacity: 0.7;
    cursor: not-allowed;
    transform: none !important;
}

/* SQL View — must be a flex container to propagate height constraints */
#sqlView {
    display: flex;
    flex-direction: column;
    flex: 1;
    min-height: 0; /* allow shrinking below content size */
}

/* Results Section */
.results-section {
    flex: 1;
    min-height: 0; /* allow shrinking below content size for scrollable child */
    padding: 1.5rem;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.results-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}

.results-header h3 {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
}

.status-indicator {
    font-size: 0.8rem;
    padding: 0.25rem 0.75rem;
    border-radius: 9999px;
    background-color: rgba(255, 255, 255, 0.05);
    color: var(--text-secondary);
    border: 1px solid var(--border);
}

.table-container {
    flex: 1;
    overflow: auto;
    border: 1px solid var(--border);
    border-radius: 12px;
    background-color: var(--card-bg);
    box-shadow: var(--shadow-md);
}

table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
    font-size: 0.875rem;
    white-space: nowrap;
}

th,
td {
    padding: 1rem 1.25rem;
    text-align: left;
    border-bottom: 1px solid var(--border);
}

th {
    background-color: rgba(30, 41, 59, 0.95);
    color: var(--text-secondary);
    font-weight: 600;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    position: sticky;
    top: 0;
    backdrop-filter: blur(8px);
    z-index: 10;
}

td {
    color: var(--text-primary);
    font-variant-numeric: tabular-nums;
    /* Prevent layout explosion on large data */
    max-width: 300px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

td.editable-cell:focus {
    overflow: visible;
    white-space: pre-wrap;
    word-break: break-word;
    outline: 2px solid var(--accent);
    outline-offset: -1px;
    background-color: var(--bg-color);
    position: relative;
    z-index: 50;
}

tbody tr {
    transition: background-color 0.1s;
}

tbody tr:nth-child(even) {
    background-color: rgba(255, 255, 255, 0.01);
}

tbody tr:hover {
    background-color: rgba(59, 130, 246, 0.05) !important;
}

/* Empty State */
.empty-state {
    padding: 4rem 2rem;
    text-align: center;
    color: var(--text-secondary);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100%;
}

.empty-state svg {
    color: var(--accent);
    margin-bottom: 1.5rem;
    opacity: 0.5;
}

.empty-state p {
    font-size: 1rem;
    font-weight: 500;
}

/* Animations */
@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

.spinner {
    width: 18px;
    height: 18px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: white;
    animation: spin 0.8s cubic-bezier(0.5, 0.1, 0.4, 0.9) infinite;
}

/* Scrollbar */
::-webkit-scrollbar {
    width: 10px;
    height: 10px;
}

::-webkit-scrollbar-track {
    background: transparent;
}

::-webkit-scrollbar-thumb {
    background: #475569;
    border-radius: 5px;
    border: 2px solid var(--bg-color);
}

::-webkit-scrollbar-thumb:hover {
    background: #64748b;
}

/* Error Toast */
.error-toast {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    background: linear-gradient(135deg, #ef4444 0%, #dc2626 100%);
    color: white;
    padding: 1rem 1.5rem;
    border-radius: 12px;
    box-shadow: 0 10px 25px -5px rgba(239, 68, 68, 0.4);
    transform: translateY(150%) scale(0.95);
    opacity: 0;
    transition: all 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
    z-index: 100;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    max-width: 400px;
}

.error-toast::before {
    content: '!';
    display: flex;
    align-items: center;
    justify-content: center;
    width: 24px;
    height: 24px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    font-weight: bold;
    font-size: 14px;
}

.error-toast.visible {
    transform: translateY(0) scale(1);
    opacity: 1;
}

/* Sticky First Column */
th:first-child,
td:first-child {
    position: sticky;
    left: 0;
    z-index: 10;
    /* Lower than normal header (20) */
    background-color: var(--card-bg);
    border-right: 1px solid var(--border);
    box-shadow: 2px 0 5px rgba(0, 0, 0, 0.1);
}

/* Ensure data rows in sticky column are on top of other data but below header */
td:first-child {
    z-index: 10;
}

/* Top-Left Corner Header (Sticky Top + Sticky Left) */
thead th:first-child {
    z-index: 30;
    /* Highest priority */
}

tr:hover td {
    background-color: var(--bg-primary);
    cursor: pointer;
}

/* --- Modals --- */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    /* Center Vertically? Maybe not if we want max height */
    justify-content: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.2s;
    z-index: 1000;
    padding: 2rem;
}

.modal-overlay.visible {
    opacity: 1;
    pointer-events: auto;
}

.modal {
    background: var(--card-bg);
    border-radius: 8px;
    width: 600px;
    max-width: 90vw;
    display: flex;
    flex-direction: column;
    max-height: 85vh;
    /* Limit total height */
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.2);
    border: 1px solid var(--border);
}

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

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

.modal-footer {
    padding: 1.5rem;
    border-top: 1px solid var(--border);
    display: flex;
    justify-content: flex-end;
    gap: 1rem;
}

/* Form Grid for Add Row */
.form-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1rem;
}

@media (min-width: 768px) {
    .modal {
        width: 800px;
        /* Wider modal for grid */
    }

    .form-grid {
        grid-template-columns: 1fr 1fr;
        /* 2 Columns */
    }
}

/* Row Detail View styles */
.detail-view-list {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.detail-item {
    display: flex;
    flex-direction: column;
    border-bottom: 1px solid var(--border);
    padding-bottom: 0.5rem;
}

.detail-key {
    font-weight: 600;
    color: var(--accent);
    font-size: 0.85rem;
    margin-bottom: 0.25rem;
}

.detail-value {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.9rem;
    white-space: pre-wrap;
    /* Allow wrapping */
    word-break: break-word;
}

/* Responsive */
@media (max-width: 768px) {
    .container {
        flex-direction: column;
    }

    .sidebar {
        width: 100%;
        height: 200px;
        border-right: none;
        border-bottom: 1px solid var(--border);
    }
}

/* Modal Styles */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    backdrop-filter: blur(4px);
}

.modal-overlay.visible {
    opacity: 1;
    visibility: visible;
}

.modal {
    background-color: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 12px;
    width: 90%;
    max-width: 500px;
    box-shadow: var(--shadow-lg);
    transform: translateY(20px);
    transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.modal-overlay.visible .modal {
    transform: translateY(0);
}

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

.modal-header h3 {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
}

.modal-body {
    padding: 1.5rem;
}

.form-group {
    margin-bottom: 1.25rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--text-secondary);
    font-size: 0.875rem;
    font-weight: 500;
}

.form-group input,
.form-group textarea {
    width: 100%;
    background-color: var(--bg-color);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 0.75rem;
    color: var(--text-primary);
    font-family: inherit;
    font-size: 0.95rem;
    outline: none;
    transition: border-color 0.2s;
}

.form-group textarea {
    min-height: 100px;
    font-family: var(--font-mono);
    resize: vertical;
}

.form-group input:focus,
.form-group textarea:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 2px rgba(59, 130, 246, 0.2);
}

.modal-footer {
    padding: 1rem 1.5rem;
    border-top: 1px solid var(--border);
    display: flex;
    justify-content: flex-end;
    gap: 0.75rem;
    background-color: rgba(0, 0, 0, 0.1);
    border-bottom-left-radius: 12px;
    border-bottom-right-radius: 12px;
}

/* Fullscreen Mode */
.results-section.fullscreen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: 999;
    background-color: var(--bg-color);
    padding: 2rem;
}

/* ===== Editable Grid Styles ===== */
.editable-toolbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.75rem 1rem;
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.1), rgba(16, 185, 129, 0.05));
    border: 1px solid var(--accent);
    border-radius: 8px;
    margin-bottom: 1rem;
}

.edit-mode-badge {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--accent);
}

.btn-sm {
    padding: 0.4rem 0.75rem;
    font-size: 0.8rem;
}

.editable-table td.editable-cell {
    cursor: text;
    transition: background-color 0.2s, box-shadow 0.2s;
}

.editable-table td.editable-cell:hover {
    background-color: rgba(59, 130, 246, 0.1);
}

.editable-table td.editable-cell:focus {
    outline: none;
    background-color: rgba(59, 130, 246, 0.15);
    box-shadow: inset 0 0 0 2px var(--accent);
}

.editable-table td.saving {
    opacity: 0.5;
}

.editable-table td.saved {
    animation: saveFlash 0.5s ease;
}

@keyframes saveFlash {
    0% {
        background-color: rgba(16, 185, 129, 0.3);
    }

    100% {
        background-color: transparent;
    }
}

.btn-icon {
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.4rem;
    border-radius: 6px;
    color: var(--text-secondary);
    transition: color 0.2s, background-color 0.2s;
}

.btn-icon:hover {
    color: var(--text-primary);
    background-color: rgba(255, 255, 255, 0.1);
}

.btn-delete {
    color: var(--error);
}

.btn-delete:hover {
    background-color: rgba(239, 68, 68, 0.15);
}

/* --- Admin Panel Responsive Grid --- */
.admin-view-container {
    flex: 1;
    overflow-y: auto;
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
}

.admin-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(450px, 1fr));
    gap: 1.5rem;
}

.admin-card {
    background-color: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 1.5rem;
    box-shadow: var(--shadow-sm);
    display: flex;
    flex-direction: column;
    gap: 1rem;
    transition: transform 0.2s, box-shadow 0.2s;
}

.admin-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}