/* Modern Dark/Light Theme CSS Design System for ApexDB Studio */
:root, [data-theme="dark"] {
    --bg-main: #0b0f19;
    --bg-card: #151c2c;
    --bg-header: #111827;
    --bg-hover: #1e293b;
    --bg-active: #283549;
    
    --border-color: rgba(255, 255, 255, 0.08);
    --border-bright: rgba(255, 255, 255, 0.16);
    
    --text-primary: #f1f5f9;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    
    --accent-cyan: #38bdf8;
    --accent-blue: #3b82f6;
    --accent-purple: #a855f7;
    --accent-emerald: #10b981;
    --accent-amber: #f59e0b;
    --accent-rose: #f43f5e;
    
    --font-main: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    --font-heading: 'Outfit', sans-serif;
    --font-mono: 'JetBrains Mono', monospace;
    
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 14px;
    --shadow-md: 0 10px 25px -5px rgba(0, 0, 0, 0.5), 0 8px 10px -6px rgba(0, 0, 0, 0.5);
}

[data-theme="light"] {
    --bg-main: #f8fafc;
    --bg-card: #ffffff;
    --bg-header: #ffffff;
    --bg-hover: #f1f5f9;
    --bg-active: #e2e8f0;
    
    --border-color: #e2e8f0;
    --border-bright: #cbd5e1;
    
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --text-muted: #64748b;
    
    --shadow-md: 0 10px 25px -5px rgba(0, 0, 0, 0.08), 0 8px 10px -6px rgba(0, 0, 0, 0.04);
}

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

body {
    font-family: var(--font-main);
    background-color: var(--bg-main);
    color: var(--text-primary);
    line-height: 1.5;
    overflow: hidden;
    height: 100vh;
    transition: background-color 0.25s ease, color 0.25s ease;
}

/* Light Mode Overrides for Inputs & Code */
[data-theme="light"] .brand-title {
    background: linear-gradient(to right, #0f172a, #334155);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

[data-theme="light"] .code-block,
[data-theme="light"] .sql-textarea {
    background-color: #f1f5f9;
    color: #0f172a;
    border: 1px solid #cbd5e1;
}

[data-theme="light"] .search-box input {
    background-color: #f1f5f9;
    color: #0f172a;
    border-color: #cbd5e1;
}

[data-theme="light"] .server-badge {
    background-color: #f1f5f9;
}

[data-theme="light"] .modal-card {
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
}

/* Lucide Icon Default Styling */
.lucide, [data-lucide] {
    width: 18px;
    height: 18px;
    stroke-width: 2px;
    vertical-align: middle;
    display: inline-block;
}

/* Scrollbar */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}
::-webkit-scrollbar-track {
    background: var(--bg-main);
}
::-webkit-scrollbar-thumb {
    background: #334155;
    border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
    background: #475569;
}

/* App Container */
.app-container {
    display: flex;
    flex-direction: column;
    height: 100vh;
    overflow: hidden;
}

/* Navbar */
.navbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 1.25rem;
    height: 60px;
    background-color: var(--bg-header);
    border-bottom: 1px solid var(--border-color);
    z-index: 100;
}

.brand {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.logo-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 38px;
    height: 38px;
    background: linear-gradient(135deg, var(--accent-cyan), var(--accent-purple));
    color: #fff;
    border-radius: var(--radius-md);
    box-shadow: 0 4px 12px rgba(56, 189, 248, 0.3);
}
.logo-icon .lucide {
    width: 22px;
    height: 22px;
}

.brand-text {
    display: flex;
    align-items: baseline;
    gap: 0.5rem;
}

.brand-title {
    font-family: var(--font-heading);
    font-size: 1.25rem;
    font-weight: 700;
    letter-spacing: -0.5px;
    background: linear-gradient(to right, #ffffff, #cbd5e1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.brand-badge {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--accent-cyan);
    background: rgba(56, 189, 248, 0.1);
    padding: 2px 8px;
    border-radius: var(--radius-sm);
    border: 1px solid rgba(56, 189, 248, 0.2);
}

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

.db-selector-wrapper {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.server-badge {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--text-secondary);
    background-color: rgba(255, 255, 255, 0.04);
    padding: 6px 12px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-color);
}

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
}
.status-dot.online {
    background-color: var(--accent-emerald);
    box-shadow: 0 0 8px var(--accent-emerald);
}

/* Inputs & Buttons */
.select-input, .form-input {
    background-color: var(--bg-card);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    padding: 0.45rem 0.75rem;
    font-size: 0.875rem;
    font-family: inherit;
    outline: none;
    transition: all 0.2s ease;
}

.select-input:focus, .form-input:focus {
    border-color: var(--accent-cyan);
    box-shadow: 0 0 0 2px rgba(56, 189, 248, 0.2);
}

.select-input.sm {
    padding: 0.25rem 0.5rem;
    font-size: 0.8rem;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.4rem;
    padding: 0.45rem 0.9rem;
    font-size: 0.85rem;
    font-weight: 500;
    border-radius: var(--radius-sm);
    border: none;
    cursor: pointer;
    transition: all 0.2s ease;
    text-decoration: none;
}

.btn .lucide {
    width: 16px;
    height: 16px;
}

.btn-primary {
    background: linear-gradient(135deg, var(--accent-blue), #2563eb);
    color: #fff;
}
.btn-primary:hover {
    background: linear-gradient(135deg, #2563eb, #1d4ed8);
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.4);
}

.btn-secondary {
    background-color: rgba(255, 255, 255, 0.07);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}
[data-theme="light"] .btn-secondary {
    background-color: #f1f5f9;
}
.btn-secondary:hover {
    background-color: rgba(255, 255, 255, 0.12);
    border-color: var(--border-bright);
}

.btn-outline {
    background-color: transparent;
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
}
.btn-outline:hover {
    color: var(--text-primary);
    border-color: var(--border-bright);
    background-color: rgba(255, 255, 255, 0.05);
}

.btn-icon {
    padding: 0.45rem;
    background-color: transparent;
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
}
.btn-icon:hover {
    color: var(--text-primary);
    background-color: rgba(255, 255, 255, 0.08);
}
.btn-icon.sm {
    padding: 0.25rem 0.4rem;
    font-size: 0.8rem;
}
.btn-icon.sm .lucide {
    width: 14px;
    height: 14px;
}

.btn-xs {
    padding: 0.2rem 0.5rem;
    font-size: 0.75rem;
}
.btn-xs .lucide {
    width: 13px;
    height: 13px;
}

/* Main Body Layout */
.main-body {
    display: flex;
    flex: 1;
    overflow: hidden;
}

/* Sidebar */
.sidebar {
    width: 260px;
    background-color: var(--bg-header);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    flex-shrink: 0;
}

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

.sidebar-title {
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.badge {
    display: inline-block;
    padding: 2px 7px;
    font-size: 0.75rem;
    font-weight: 600;
    border-radius: 10px;
    background-color: rgba(255, 255, 255, 0.08);
    color: var(--accent-cyan);
}

.search-box {
    position: relative;
    padding: 0.75rem 1rem;
    display: flex;
    align-items: center;
}
.search-box .search-icon {
    position: absolute;
    left: 1.5rem;
    color: var(--text-muted);
    width: 14px;
    height: 14px;
}
.search-box input {
    width: 100%;
    padding: 0.4rem 0.5rem 0.4rem 2.2rem;
    background-color: var(--bg-main);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 0.85rem;
    outline: none;
}
.search-box input:focus {
    border-color: var(--accent-cyan);
}

.db-list {
    flex: 1;
    overflow-y: auto;
    padding: 0.5rem;
}

.db-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.6rem 0.8rem;
    margin-bottom: 2px;
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    cursor: pointer;
    font-size: 0.875rem;
    transition: all 0.15s ease;
}
.db-item:hover {
    background-color: var(--bg-hover);
    color: var(--text-primary);
}
.db-item.active {
    background-color: rgba(56, 189, 248, 0.12);
    color: var(--accent-cyan);
    font-weight: 600;
    border-left: 3px solid var(--accent-cyan);
}
.db-item-icon {
    width: 15px;
    height: 15px;
    color: var(--text-muted);
}
.db-item.active .db-item-icon {
    color: var(--accent-cyan);
}
.db-item-info {
    font-size: 0.75rem;
    color: var(--text-muted);
}

/* Content Area */
.content-area {
    flex: 1;
    display: flex;
    flex-direction: column;
    background-color: var(--bg-main);
    overflow: hidden;
}

/* Tabs Navigation */
.tabs-header {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    background-color: var(--bg-header);
    border-bottom: 1px solid var(--border-color);
    padding: 0 1rem;
    height: 48px;
    overflow-x: auto;
}

.tab-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.65rem 1rem;
    background: transparent;
    border: none;
    border-bottom: 2px solid transparent;
    color: var(--text-secondary);
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    white-space: nowrap;
    transition: all 0.2s ease;
}
.tab-btn .lucide {
    width: 16px;
    height: 16px;
}
.tab-btn:hover {
    color: var(--text-primary);
}
.tab-btn.active {
    color: var(--accent-cyan);
    border-bottom-color: var(--accent-cyan);
    background-color: rgba(56, 189, 248, 0.05);
}

/* Tab Body */
.tab-body {
    flex: 1;
    overflow-y: auto;
    padding: 1.25rem;
}

.tab-content {
    display: none;
    height: 100%;
}
.tab-content.active {
    display: block;
}

/* Metrics Grid */
.metrics-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 1.25rem;
    margin-bottom: 1.5rem;
}

.metric-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 1.25rem;
    display: flex;
    align-items: center;
    gap: 1rem;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.2);
}

.metric-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}
.metric-icon .lucide {
    width: 24px;
    height: 24px;
}
.metric-icon.purple { background: rgba(168, 85, 247, 0.15); color: var(--accent-purple); }
.metric-icon.cyan { background: rgba(56, 189, 248, 0.15); color: var(--accent-cyan); }
.metric-icon.emerald { background: rgba(16, 185, 129, 0.15); color: var(--accent-emerald); }
.metric-icon.amber { background: rgba(245, 158, 11, 0.15); color: var(--accent-amber); }

.metric-info {
    display: flex;
    flex-direction: column;
}

.metric-label {
    font-size: 0.75rem;
    color: var(--text-muted);
    font-weight: 500;
    text-transform: uppercase;
}

.metric-value {
    font-family: var(--font-heading);
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-top: 2px;
}

/* Section Card */
.section-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 1.25rem;
    margin-bottom: 1.25rem;
}
.section-card h3, .section-card h4 {
    margin-bottom: 0.75rem;
    font-weight: 600;
    color: var(--text-primary);
}

.db-summary-box {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

/* Data Table Component */
.table-container {
    width: 100%;
    overflow-x: auto;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    background-color: var(--bg-card);
}

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

.data-table th {
    background-color: var(--bg-header);
    color: var(--text-secondary);
    font-weight: 600;
    padding: 0.75rem 1rem;
    border-bottom: 1px solid var(--border-color);
    white-space: nowrap;
    position: sticky;
    top: 0;
}

.data-table td {
    padding: 0.65rem 1rem;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-primary);
    max-width: 300px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.data-table tbody tr:hover {
    background-color: var(--bg-hover);
}

.table-sort-header {
    cursor: pointer;
    user-select: none;
}
.table-sort-header:hover {
    color: var(--accent-cyan);
}

/* Data Table Badges & Tags */
.tag {
    display: inline-flex;
    align-items: center;
    gap: 0.2rem;
    padding: 2px 6px;
    font-size: 0.7rem;
    font-weight: 600;
    border-radius: 4px;
    font-family: var(--font-mono);
}
.tag-pk { background: rgba(245, 158, 11, 0.2); color: var(--accent-amber); border: 1px solid rgba(245, 158, 11, 0.4); }
.tag-mul { background: rgba(168, 85, 247, 0.2); color: var(--accent-purple); border: 1px solid rgba(168, 85, 247, 0.4); }
.tag-uni { background: rgba(56, 189, 248, 0.2); color: var(--accent-cyan); border: 1px solid rgba(56, 189, 248, 0.4); }
.tag-null { background: rgba(244, 63, 94, 0.15); color: var(--accent-rose); font-style: italic; }
.tag-type { color: var(--accent-cyan); font-family: var(--font-mono); }

/* Toolbar */
.toolbar {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 1rem;
}
.toolbar-spacer {
    flex: 1;
}
.flex-wrap {
    flex-wrap: wrap;
}
.selector-inline {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

/* Pagination Bar */
.pagination-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.75rem 0;
    font-size: 0.85rem;
    color: var(--text-secondary);
}
.pagination-controls {
    display: flex;
    align-items: center;
    gap: 0.4rem;
}
.page-num {
    padding: 2px 10px;
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--accent-cyan);
    font-weight: 600;
}

/* Code Block */
.code-block {
    font-family: var(--font-mono);
    font-size: 0.85rem;
    background-color: #090d16;
    color: #e2e8f0;
    padding: 1rem;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
    overflow-x: auto;
    white-space: pre-wrap;
    word-break: break-all;
}

/* SQL Console Layout */
.sql-console-container {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
    height: 100%;
}

.sql-editor-wrapper {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.sql-toolbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.6rem 1rem;
    background-color: var(--bg-header);
    border-bottom: 1px solid var(--border-color);
}
.sql-title {
    font-weight: 600;
    font-size: 0.85rem;
    color: var(--text-secondary);
}
.preset-btns {
    display: flex;
    gap: 0.4rem;
}

.sql-textarea {
    width: 100%;
    height: 140px;
    background-color: #090d16;
    color: #f8fafc;
    font-family: var(--font-mono);
    font-size: 0.9rem;
    padding: 1rem;
    border: none;
    outline: none;
    resize: vertical;
}

.sql-editor-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.6rem 1rem;
    background-color: var(--bg-header);
    border-top: 1px solid var(--border-color);
}

.sql-result-wrapper {
    flex: 1;
    display: flex;
    flex-direction: column;
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    overflow: hidden;
}

.sql-result-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.6rem 1rem;
    background-color: var(--bg-header);
    border-bottom: 1px solid var(--border-color);
    font-weight: 600;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.sql-result-grid {
    flex: 1;
    overflow: auto;
}

/* Modal Window */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background-color: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.25s ease;
}
.modal-overlay.active {
    opacity: 1;
    pointer-events: auto;
}

.modal-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-bright);
    border-radius: var(--radius-lg);
    width: 100%;
    max-width: 440px;
    box-shadow: var(--shadow-md);
    overflow: hidden;
    transform: translateY(-20px);
    transition: transform 0.25s ease;
}
.modal-overlay.active .modal-card {
    transform: translateY(0);
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 1.25rem;
    background-color: var(--bg-header);
    border-bottom: 1px solid var(--border-color);
}
.modal-close {
    background: none;
    border: none;
    color: var(--text-muted);
    font-size: 1.5rem;
    cursor: pointer;
}
.modal-close:hover { color: var(--text-primary); }

.modal-body {
    padding: 1.25rem;
}

.form-group {
    margin-bottom: 1rem;
}
.form-group label {
    display: block;
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-bottom: 0.4rem;
}
.form-group input {
    width: 100%;
}

.modal-footer {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 0.5rem;
    padding: 1rem 1.25rem;
    background-color: var(--bg-header);
    border-top: 1px solid var(--border-color);
}

/* Toast Notifications */
.toast-container {
    position: fixed;
    bottom: 20px;
    right: 20px;
    display: flex;
    flex-direction: column;
    gap: 10px;
    z-index: 2000;
}

.toast {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    padding: 0.75rem 1.2rem;
    background-color: var(--bg-card);
    border-left: 4px solid var(--accent-cyan);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 0.875rem;
    box-shadow: var(--shadow-md);
    animation: slideIn 0.3s ease forwards;
}
.toast.success { border-left-color: var(--accent-emerald); }
.toast.error { border-left-color: var(--accent-rose); }
.toast .toast-icon {
    width: 18px;
    height: 18px;
}

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

/* Helper Utilities */
.text-center { text-align: center; }
.text-muted { color: var(--text-muted); }
.text-xs { font-size: 0.75rem; }
.padding-md { padding: 1.5rem; }