/*
 * Premium Dark Mode System Architecture for Database Console
 * Built with CSS Custom Properties, Glassmorphism, & Modern Micro-Interactions.
 * Fully Responsive for Desktop, Tablet, and Mobile devices.
 */

:root {
    --bg: #090d16;
    --bg-mesh: radial-gradient(at 0% 0%, rgba(99, 102, 241, 0.12) 0px, transparent 50%),
               radial-gradient(at 100% 100%, rgba(16, 185, 129, 0.08) 0px, transparent 50%),
               radial-gradient(at 50% 50%, rgba(15, 23, 42, 0.5) 0px, transparent 100%);
    
    --surface: rgba(17, 23, 38, 0.75);
    --surface-solid: #111726;
    --surface-2: rgba(24, 32, 50, 0.85);
    --surface-2-solid: #182032;
    --surface-3: #212b42;
    
    --border: rgba(255, 255, 255, 0.09);
    --border-hover: rgba(255, 255, 255, 0.18);
    --border-active: rgba(99, 102, 241, 0.5);
    
    --text: #f3f4f6;
    --muted: #9ca3af;
    --subtle: #6b7280;
    
    --primary: #6366f1;
    --primary-hover: #4f46e5;
    --primary-dim: rgba(99, 102, 241, 0.15);
    --primary-glow: 0 0 20px rgba(99, 102, 241, 0.35);
    
    --ok: #10b981;
    --ok-dim: rgba(16, 185, 129, 0.15);
    --ok-text: #34d399;
    
    --warn: #f59e0b;
    --warn-dim: rgba(245, 158, 11, 0.15);
    --warn-text: #fbbf24;
    
    --danger: #ef4444;
    --danger-dim: rgba(239, 68, 68, 0.18);
    --danger-text: #f87171;
    
    --info: #38bdf8;
    --info-dim: rgba(56, 189, 248, 0.15);
    --info-text: #7dd3fc;
    
    --radius-sm: 6px;
    --radius: 12px;
    --radius-lg: 18px;
    
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.2);
    --shadow: 0 8px 30px rgba(0, 0, 0, 0.35);
    --shadow-lg: 0 16px 40px rgba(0, 0, 0, 0.5);
    
    --font-sans: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    --mono: "JetBrains Mono", "Fira Code", "SF Mono", Menlo, Consolas, Monaco, monospace;
    
    --glass-backdrop: blur(16px) saturate(180%);
}

* {
    box-sizing: border-box;
}

html {
    color-scheme: dark;
}

body {
    margin: 0;
    font-family: var(--font-sans);
    font-size: 14px;
    line-height: 1.6;
    background-color: var(--bg);
    background-image: var(--bg-mesh);
    background-attachment: fixed;
    color: var(--text);
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

a {
    color: var(--primary);
    text-decoration: none;
    transition: color 0.15s ease, opacity 0.15s ease;
}
a:hover {
    color: #818cf8;
    text-decoration: none;
}

code, pre, textarea.sql, .mono {
    font-family: var(--mono);
    font-size: 13px;
}

/* ---------- Topbar Layout ---------- */

.topbar {
    display: flex;
    align-items: center;
    gap: 20px;
    padding: 0 28px;
    height: 64px;
    background: rgba(11, 15, 23, 0.85);
    backdrop-filter: var(--glass-backdrop);
    -webkit-backdrop-filter: var(--glass-backdrop);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 100;
}

.topbar .brand {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 700;
    font-size: 16px;
    letter-spacing: -0.02em;
    color: #ffffff;
}

.topbar .brand-icon {
    width: 28px;
    height: 28px;
    background: linear-gradient(135deg, var(--primary), #a855f7);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--primary-glow);
    color: #fff;
}

.nav-toggle-btn {
    display: none;
    background: transparent;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text);
    padding: 6px 10px;
    cursor: pointer;
}
.nav-toggle-btn:hover {
    background: rgba(255, 255, 255, 0.05);
}

.nav-menu-wrapper {
    display: flex;
    align-items: center;
    gap: 16px;
    flex: 1;
    justify-content: space-between;
}

.topbar nav {
    display: flex;
    align-items: center;
    gap: 6px;
    margin-left: 12px;
}

.topbar nav a {
    color: var(--muted);
    padding: 8px 14px;
    border-radius: var(--radius-sm);
    font-weight: 500;
    font-size: 13.5px;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    transition: all 0.2s ease;
}
.topbar nav a:hover {
    color: var(--text);
    background: rgba(255, 255, 255, 0.05);
}
.topbar nav a.active {
    color: #ffffff;
    background: var(--primary-dim);
    border: 1px solid rgba(99, 102, 241, 0.3);
}

.user-pill {
    display: flex;
    align-items: center;
    gap: 12px;
    background: var(--surface-2-solid);
    border: 1px solid var(--border);
    padding: 5px 12px;
    border-radius: 20px;
    font-size: 12.5px;
}
.user-pill .who {
    color: var(--muted);
}
.user-pill .role-tag {
    background: var(--primary-dim);
    color: #a5b4fc;
    font-size: 11px;
    font-weight: 600;
    padding: 2px 8px;
    border-radius: 10px;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

/* ---------- Page Wrapper & Headers ---------- */

.wrap {
    max-width: 1240px;
    margin: 0 auto;
    padding: 32px 24px 80px;
}
.wrap.narrow {
    max-width: 440px;
    padding-top: 80px;
}

h1 {
    font-size: 24px;
    font-weight: 700;
    letter-spacing: -0.03em;
    margin: 0 0 6px;
    color: #ffffff;
}
h2 {
    font-size: 17px;
    font-weight: 600;
    letter-spacing: -0.01em;
    margin: 28px 0 14px;
    color: var(--text);
}
h3 {
    font-size: 12px;
    font-weight: 600;
    margin: 20px 0 8px;
    color: var(--muted);
    text-transform: uppercase;
    letter-spacing: 0.08em;
}
.lede {
    color: var(--muted);
    font-size: 14.5px;
    margin: 0 0 24px;
}

/* ---------- Cards & Containers ---------- */

.card {
    background: var(--surface);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 24px;
    margin-bottom: 24px;
    box-shadow: var(--shadow);
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}
.card:hover {
    border-color: rgba(255, 255, 255, 0.14);
}
.card.tight {
    padding: 16px;
}

/* ---------- Stat Grid & Cards ---------- */

.stat-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 16px;
    margin-bottom: 24px;
}
.stat {
    background: var(--surface);
    backdrop-filter: blur(12px);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 20px;
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: transform 0.2s ease, border-color 0.2s ease;
}
.stat:hover {
    transform: translateY(-2px);
    border-color: var(--border-active);
}
.stat::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: var(--primary);
    border-radius: 4px 0 0 4px;
}
.stat .n {
    font-size: 32px;
    font-weight: 800;
    letter-spacing: -0.03em;
    color: #ffffff;
    line-height: 1.2;
}
.stat .l {
    color: var(--muted);
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    margin-top: 4px;
}

/* ---------- Tables ---------- */

table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
}
th {
    color: var(--muted);
    font-weight: 600;
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.07em;
    padding: 12px 14px;
    border-bottom: 1px solid var(--border);
    background: rgba(0, 0, 0, 0.15);
}
th:first-child { border-top-left-radius: var(--radius-sm); }
th:last-child { border-top-right-radius: var(--radius-sm); }

td {
    padding: 12px 14px;
    border-bottom: 1px solid var(--border);
    vertical-align: middle;
    color: var(--text);
    font-size: 13.5px;
}
tbody tr {
    transition: background 0.15s ease;
}
tbody tr:hover {
    background: rgba(255, 255, 255, 0.025);
}
tbody tr:last-child td {
    border-bottom: none;
}
td.num {
    text-align: right;
    font-variant-numeric: tabular-nums;
    font-family: var(--mono);
}

.scroll-x {
    overflow-x: auto;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border);
    -webkit-overflow-scrolling: touch;
}
.result-grid th {
    position: sticky;
    top: 0;
    z-index: 2;
}
.result-grid td {
    white-space: pre-wrap;
    word-break: break-word;
    max-width: 440px;
    font-family: var(--mono);
    font-size: 12.5px;
}
.result-grid td.null {
    color: var(--subtle);
    font-style: italic;
    font-weight: 500;
}

/* ---------- Forms & Inputs ---------- */

label {
    display: block;
    margin-bottom: 6px;
    color: var(--muted);
    font-size: 13px;
    font-weight: 500;
}
.field {
    margin-bottom: 18px;
}
.field-row {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}
.field-row > .field {
    flex: 1;
    min-width: 200px;
}

input[type=text], input[type=email], input[type=password], input[type=number],
input[type=datetime-local], select, textarea {
    width: 100%;
    padding: 10px 14px;
    background: rgba(9, 13, 22, 0.7);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text);
    font-family: inherit;
    font-size: 14px;
    transition: all 0.2s ease;
}

textarea.sql {
    background: #070a11;
    border: 1px solid rgba(255, 255, 255, 0.12);
    min-height: 190px;
    resize: vertical;
    line-height: 1.6;
    color: #e2e8f0;
    border-radius: var(--radius-sm);
    padding: 14px;
    tab-size: 4;
}

input:focus, select:focus, textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.25);
    background: rgba(9, 13, 22, 0.95);
}

.check {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    margin-bottom: 12px;
    cursor: pointer;
}
.check input[type=checkbox] {
    appearance: none;
    -webkit-appearance: none;
    width: 18px;
    height: 18px;
    background: rgba(9, 13, 22, 0.8);
    border: 1px solid var(--border);
    border-radius: 4px;
    margin-top: 2px;
    cursor: pointer;
    position: relative;
    transition: all 0.15s ease;
}
.check input[type=checkbox]:checked {
    background: var(--primary);
    border-color: var(--primary);
}
.check input[type=checkbox]:checked::after {
    content: "";
    position: absolute;
    left: 5px;
    top: 2px;
    width: 4px;
    height: 8px;
    border: solid white;
    border-width: 0 2px 2px 0;
    transform: rotate(45deg);
}
.check label {
    margin: 0;
    color: var(--text);
    font-size: 13.5px;
    cursor: pointer;
}
.check .hint {
    display: block;
    color: var(--muted);
    font-size: 12px;
    margin-top: 2px;
}

/* ---------- Buttons ---------- */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 9px 16px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border);
    background: var(--surface-2-solid);
    color: var(--text);
    font-size: 13.5px;
    font-weight: 500;
    font-family: inherit;
    cursor: pointer;
    transition: all 0.2s ease;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
    min-height: 38px;
}
.btn:hover {
    background: #232c42;
    border-color: rgba(255, 255, 255, 0.2);
    color: #ffffff;
    text-decoration: none;
}
.btn.primary {
    background: linear-gradient(135deg, var(--primary), var(--primary-hover));
    border-color: rgba(99, 102, 241, 0.6);
    color: #ffffff;
    box-shadow: 0 4px 14px rgba(99, 102, 241, 0.35);
}
.btn.primary:hover {
    background: linear-gradient(135deg, #4f46e5, #4338ca);
    box-shadow: 0 6px 18px rgba(99, 102, 241, 0.45);
}
.btn.danger {
    background: linear-gradient(135deg, #dc2626, #b91c1c);
    border-color: rgba(239, 68, 68, 0.6);
    color: #ffffff;
}
.btn.danger:hover {
    background: #b91c1c;
}
.btn.small {
    padding: 5px 11px;
    font-size: 12.5px;
    border-radius: 6px;
    min-height: 30px;
}
.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    box-shadow: none;
}

.actions {
    display: flex;
    gap: 12px;
    align-items: center;
    flex-wrap: wrap;
    margin-top: 18px;
}
.inline-form {
    display: inline;
}

/* ---------- Flash Notices & Alerts ---------- */

.notice {
    padding: 14px 18px;
    border-radius: var(--radius-sm);
    margin-bottom: 20px;
    border: 1px solid;
    font-size: 14px;
    line-height: 1.5;
    box-shadow: var(--shadow-sm);
}
.notice.ok {
    background: var(--ok-dim);
    border-color: rgba(16, 185, 129, 0.4);
    color: var(--ok-text);
}
.notice.warn {
    background: var(--warn-dim);
    border-color: rgba(245, 158, 11, 0.4);
    color: var(--warn-text);
}
.notice.error {
    background: var(--danger-dim);
    border-color: rgba(239, 68, 68, 0.4);
    color: var(--danger-text);
}
.notice ul {
    margin: 8px 0 0;
    padding-left: 20px;
}
.notice code {
    background: rgba(0, 0, 0, 0.4);
    padding: 2px 6px;
    border-radius: 4px;
    font-family: var(--mono);
}

.field-error {
    color: var(--danger-text);
    font-size: 12px;
    margin-top: 5px;
    font-weight: 500;
}

/* ---------- Badges ---------- */

.badge {
    display: inline-flex;
    align-items: center;
    padding: 2px 9px;
    border-radius: 20px;
    font-size: 11.5px;
    font-weight: 600;
    border: 1px solid var(--border);
    color: var(--muted);
    white-space: nowrap;
    letter-spacing: 0.02em;
}
.badge.read {
    background: var(--info-dim);
    border-color: rgba(56, 189, 248, 0.3);
    color: var(--info-text);
}
.badge.write {
    background: var(--warn-dim);
    border-color: rgba(245, 158, 11, 0.3);
    color: var(--warn-text);
}
.badge.ddl, .badge.high {
    background: var(--danger-dim);
    border-color: rgba(239, 68, 68, 0.4);
    color: var(--danger-text);
}
.badge.production {
    background: rgba(239, 68, 68, 0.15);
    border-color: rgba(239, 68, 68, 0.5);
    color: #fca5a5;
}
.badge.staging {
    background: rgba(245, 158, 11, 0.15);
    border-color: rgba(245, 158, 11, 0.5);
    color: #fde047;
}
.badge.development, .badge.local {
    background: rgba(16, 185, 129, 0.15);
    border-color: rgba(16, 185, 129, 0.5);
    color: #6ee7b7;
}
.badge.ok {
    background: var(--ok-dim);
    border-color: rgba(16, 185, 129, 0.4);
    color: var(--ok-text);
}
.badge.critical {
    background: var(--danger-dim);
    border-color: var(--danger);
    color: #fca5a5;
}

.muted { color: var(--muted); }
.right { text-align: right; }
.spread {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
    flex-wrap: wrap;
}

/* --- Layout & Spacing Utilities for Easy Maintenance --- */
.d-flex { display: flex !important; }
.flex-col { flex-direction: column !important; }
.align-center { align-items: center !important; }
.justify-between { justify-content: space-between !important; }
.gap-1 { gap: 4px !important; }
.gap-2 { gap: 8px !important; }
.gap-3 { gap: 12px !important; }
.gap-4 { gap: 16px !important; }

.mt-0 { margin-top: 0 !important; }
.mt-1 { margin-top: 4px !important; }
.mt-2 { margin-top: 8px !important; }
.mt-3 { margin-top: 12px !important; }
.mb-1 { margin-bottom: 4px !important; }
.mb-2 { margin-bottom: 8px !important; }
.mb-3 { margin-bottom: 12px !important; }
.mb-4 { margin-bottom: 16px !important; }
.mb-6 { margin-bottom: 24px !important; }

.w-140 { width: 140px !important; }
.w-full { width: 100% !important; }

.font-xs { font-size: 11px !important; }
.font-sm { font-size: 12px !important; }
.font-md { font-size: 14px !important; }
.font-lg { font-size: 16px !important; }
.font-mono { font-family: var(--mono) !important; }

pre.sql-block {
    background: #070a11;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 14px;
    overflow-x: auto;
    margin: 0 0 16px;
    white-space: pre-wrap;
    word-break: break-word;
    color: #e2e8f0;
}

.qr {
    background: #ffffff;
    padding: 14px;
    border-radius: var(--radius);
    display: inline-block;
    box-shadow: var(--shadow);
}
.qr svg {
    display: block;
    width: 200px;
    height: 200px;
}

.codes {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
    gap: 10px;
}
.codes span {
    font-family: var(--mono);
    background: rgba(9, 13, 22, 0.8);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 8px 10px;
    text-align: center;
    font-weight: 600;
    color: var(--primary);
}

.query-meta-stats {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 6px 12px;
    font-size: 13px;
    color: var(--muted);
}
.query-meta-stats .separator {
    color: var(--subtle);
}

.empty {
    color: var(--muted);
    padding: 32px;
    text-align: center;
    font-size: 14px;
}

/* ---------- Responsive Mobile & Tablet Rules ---------- */

@media (max-width: 960px) {
    .topbar {
        padding: 0 16px;
        justify-content: space-between;
    }

    .nav-toggle-btn {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        background: transparent;
        border: 1px solid var(--border);
        border-radius: var(--radius-sm);
        color: var(--text);
        padding: 8px;
        cursor: pointer;
        outline: none;
        transition: background 0.15s ease;
    }
    .nav-toggle-btn:hover {
        background: rgba(255, 255, 255, 0.05);
    }

    .nav-menu-wrapper {
        display: flex;
        position: fixed;
        top: 64px;
        right: 0;
        width: 320px;
        max-width: 85vw;
        bottom: 0;
        overflow-y: auto;
        background: rgba(17, 23, 38, 0.96);
        backdrop-filter: var(--glass-backdrop);
        -webkit-backdrop-filter: var(--glass-backdrop);
        border-left: 1px solid var(--border);
        flex-direction: column;
        align-items: stretch;
        padding: 24px;
        gap: 20px;
        z-index: 1000;
        transform: translateX(100%);
        transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
        box-shadow: -10px 0 30px rgba(0, 0, 0, 0.35);
    }

    .nav-menu-wrapper.open {
        transform: translateX(0);
    }

    /* Backdrop blur overlay for navigation */
    body.nav-open::after {
        content: "";
        position: fixed;
        top: 64px;
        left: 0;
        right: 0;
        bottom: 0;
        background: rgba(0, 0, 0, 0.4);
        backdrop-filter: blur(4px);
        -webkit-backdrop-filter: blur(4px);
        z-index: 999;
        animation: fadeInOverlay 0.25s ease-out forwards;
    }

    /* Stops the page behind the panel from scrolling with it */
    body.nav-open {
        overflow: hidden;
    }

    .topbar nav {
        flex-direction: column;
        align-items: stretch;
        margin-left: 0;
    }

    .topbar nav a {
        padding: 12px 16px;
        font-size: 14px;
        border-radius: var(--radius-sm);
    }

    .user-pill {
        flex-direction: column;
        align-items: stretch;
        gap: 8px;
        padding: 12px;
        border-radius: var(--radius-sm);
        text-align: left;
    }
    
    .user-pill .who {
        overflow: hidden;
        text-overflow: ellipsis;
        white-space: nowrap;
    }
    
    .user-pill .role-tag {
        align-self: flex-start;
    }

    .inline-form button.btn {
        width: 100%;
        padding: 12px;
    }
}

@keyframes fadeInOverlay {
    from { opacity: 0; }
    to { opacity: 1; }
}

@media (max-width: 640px) {
    .wrap {
        padding: 20px 14px 48px;
    }

    .wrap.narrow {
        padding-top: 40px;
    }

    h1 {
        font-size: 20px;
    }

    .card {
        padding: 16px;
        margin-bottom: 16px;
    }

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

    .stat {
        padding: 16px;
    }

    .stat .n {
        font-size: 26px;
    }

    .actions {
        flex-direction: column;
        align-items: stretch;
    }

    .actions .btn {
        width: 100%;
    }

    .field-row {
        flex-direction: column;
        gap: 12px;
    }

    .field-row > .field {
        min-width: 100%;
    }

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

    .scroll-x {
        -webkit-overflow-scrolling: touch;
        border-radius: var(--radius-sm);
    }

    .scroll-x table {
        width: max-content;
        min-width: 100%;
    }

    td, th {
        padding: 10px 12px;
        font-size: 12.5px;
        white-space: nowrap;
    }
    
    /* Result grid cell text wrapping is okay, but keep regular metadata tables clean */
    .result-grid td {
        white-space: pre-wrap;
    }

    .subnav {
        flex-wrap: nowrap !important;
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
        padding-bottom: 6px;
        margin-bottom: 12px;
        scrollbar-width: none;
    }
    .subnav::-webkit-scrollbar {
        display: none;
    }
    .subnav-title, .subnav a {
        white-space: nowrap;
        flex-shrink: 0;
    }
    
    .query-meta-stats {
        width: 100%;
        margin-top: 8px;
    }
    
    .query-meta-stats .separator {
        display: none;
    }
}

/* ==================================================================
 * Connection workspace: sub-navigation, object tree, data grid, SQL editor
 * ================================================================== */
.subnav {
    display: flex;
    align-items: center;
    gap: 14px;
    flex-wrap: wrap;
    padding: 8px 0 10px;
    margin-bottom: 16px;
    border-bottom: 1px solid var(--border);
}
.subnav-title { font-weight: 600; margin-right: 6px; }
.subnav a { color: var(--muted); padding: 2px 0; border-bottom: 2px solid transparent; }
.subnav a:hover { color: var(--text); text-decoration: none; }
.subnav a.active { color: var(--text); border-bottom-color: var(--primary); }

/* ---- Object tree ---- */

.workspace { display: flex; gap: 20px; align-items: flex-start; }
.workspace > .main { flex: 1; min-width: 0; }

.tree {
    width: 240px;
    flex: 0 0 240px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 10px 12px;
    max-height: 78vh;
    overflow-y: auto;
    position: sticky;
    top: 68px;
}
.tree h3 { margin: 0 0 6px; font-size: 11px; }
.tree details { margin-bottom: 4px; }
.tree summary {
    cursor: pointer;
    padding: 3px 0;
    color: var(--muted);
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: .05em;
    list-style: none;
}
.tree summary::-webkit-details-marker { display: none; }
.tree summary::before { content: "▸ "; }
.tree details[open] > summary::before { content: "▾ "; }
.tree summary:hover { color: var(--text); }
.tree ul { list-style: none; margin: 2px 0 6px; padding: 0 0 0 12px; }
.tree li { padding: 1px 0; }
.tree li a { color: var(--text); font-size: 13px; display: block; padding: 1px 4px; border-radius: 3px; }
.tree li a:hover { background: var(--surface-2); text-decoration: none; }
.tree li a.active { background: var(--primary-dim); }
.tree .leaf { color: var(--muted); font-size: 12px; padding: 1px 4px; }
.tree .count { color: var(--muted); font-size: 11px; }

@media (max-width: 900px) {
    .workspace { display: block; }
    .tree { width: auto; flex: none; position: static; max-height: none; margin-bottom: 16px; }
}

/* ---- Editable data grid ---- */

.data-grid th.is-key { color: var(--primary); }
.data-grid td { cursor: cell; }
.data-grid td.locked { cursor: not-allowed; background: rgba(255, 255, 255, .02); color: var(--muted); }
.data-grid td.selected { outline: 2px solid var(--primary); outline-offset: -2px; }
.data-grid td.dirty { background: rgba(217, 164, 65, .14); }
.data-grid tr.row-deleted td { text-decoration: line-through; opacity: .55; background: rgba(224, 92, 92, .1); }
.data-grid tr.row-new td { background: rgba(63, 178, 127, .09); }
.data-grid td.row-state, .data-grid th.row-state { width: 24px; text-align: center; color: var(--warn); cursor: default; }
.cell-input {
    width: 100%;
    padding: 2px 4px;
    font-family: var(--mono);
    font-size: 13px;
    background: var(--bg);
    border: 1px solid var(--primary);
    border-radius: 3px;
    color: var(--text);
}

/* ---- SQL editor ---- */

.editor-shell { position: relative; }

.editor-tabs { display: flex; gap: 4px; flex-wrap: wrap; margin-bottom: 6px; }
.editor-tabs .tab {
    background: var(--surface-2);
    border: 1px solid var(--border);
    border-bottom: none;
    border-radius: var(--radius) var(--radius) 0 0;
    color: var(--muted);
    padding: 4px 10px;
    font-size: 12px;
    font-family: inherit;
    cursor: pointer;
}
.editor-tabs .tab.active { background: var(--bg); color: var(--text); border-color: var(--primary); }
.editor-tabs .tab-add { font-weight: 600; }
.editor-tabs .tab-close { margin-left: 8px; opacity: .6; }
.editor-tabs .tab-close:hover { opacity: 1; color: var(--danger); }

.editor-box { position: relative; border: 1px solid var(--border); border-radius: var(--radius); background: var(--bg); }
.editor-box:focus-within { border-color: var(--primary); box-shadow: 0 0 0 2px rgba(99, 102, 241, .28); }

.editor-highlight,
.editor-box textarea.sql {
    margin: 0;
    padding: 10px 12px;
    font-family: var(--mono);
    font-size: 13px;
    line-height: 20px;
    white-space: pre-wrap;
    word-break: break-word;
    border: none;
    box-sizing: border-box;
}

.editor-highlight {
    position: absolute;
    inset: 0;
    overflow: auto;
    pointer-events: none;
    color: var(--text);
}

.editor-box textarea.sql {
    position: relative;
    display: block;
    width: 100%;
    min-height: 190px;
    background: transparent;
    color: transparent;
    caret-color: var(--text);
    resize: vertical;
}
.editor-box textarea.sql:focus { outline: none; box-shadow: none; }

.t-kw { color: #7aa2f7; font-weight: 600; }
.t-ty { color: #7dcfff; }
.t-st { color: #9ece6a; }
.t-nu { color: #ff9e64; }
.t-cm { color: #5f6a86; font-style: italic; }
.t-id { color: #e0af68; }
.t-op { color: #bb9af7; }

.editor-metrics {
    position: absolute;
    visibility: hidden;
    font-family: var(--mono);
    font-size: 13px;
}

.completions {
    position: absolute;
    z-index: 20;
    margin: 0;
    padding: 4px;
    list-style: none;
    min-width: 200px;
    max-height: 220px;
    overflow-y: auto;
    background: var(--surface-2);
    border: 1px solid var(--primary);
    border-radius: var(--radius);
    box-shadow: 0 8px 24px rgba(0, 0, 0, .45);
}
.completions li {
    display: flex;
    justify-content: space-between;
    gap: 12px;
    padding: 3px 8px;
    border-radius: 3px;
    font-family: var(--mono);
    font-size: 12px;
    cursor: pointer;
}
.completions li.active { background: var(--primary-dim); }
.completions .kind { color: var(--muted); font-family: system-ui; font-size: 11px; }

/* ---- Designer & transfer ---- */

.designer-row td { padding: 4px 6px; }
.designer-row input[type=text], .designer-row select { padding: 5px 7px; font-size: 13px; }
.designer-row .narrow { max-width: 90px; }