/* ═══════════════════════════════════════════════════
   CSS Custom Properties — Dark theme (default)
   ═══════════════════════════════════════════════════ */
:root {
    /* Surfaces */
    --bg-base: #0c0c0e;
    --bg-panel: #161618;
    --bg-input: #09090b;
    --bg-hover: rgba(255,255,255,.04);
    --bg-hover-subtle: rgba(255,255,255,.03);

    /* Borders */
    --border: #2a2a2e;
    --border-subtle: #1e1e22;
    --border-focus: #3f3f46;

    /* Text */
    --text-primary: #f4f4f5;
    --text-body: #d4d4d8;
    --text-muted: #a1a1aa;
    --text-dim: #71717a;
    --text-ghost: #52525b;
    --text-placeholder: #3f3f46;

    /* Accent (amber) */
    --accent: #f59e0b;
    --accent-hover: #d97706;
    --accent-text: #0c0c0e;
    --accent-glow: rgba(245,158,11,.3);
    --accent-tint: rgba(245,158,11,.08);
    --accent-tint-strong: rgba(245,158,11,.15);

    /* Secondary (sky blue) */
    --info: #38bdf8;
    --info-tint: rgba(56,189,248,.08);
    --info-tint-strong: rgba(56,189,248,.18);
    --info-badge-bg: rgba(56,189,248,.1);

    /* Semantic */
    --success: #16a34a;
    --success-hover: #15803d;
    --success-glow: rgba(22,163,74,.3);
    --error: #dc2626;
    --error-hover: #b91c1c;
    --error-tint: rgba(220,38,38,.08);
    --error-tint-hover: rgba(220,38,38,.14);
    --warning: #fbbf24;
    --warning-tint: rgba(251,191,36,.08);
    --warning-tint-hover: rgba(251,191,36,.14);
    --status-ok: #4ade80;

    /* Sort highlight */
    --sort-row: rgba(245,158,11,.18);
    --sort-row-hover: rgba(245,158,11,.26);
    --sort-header: #3d3018;

    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0,0,0,.25);
    --shadow-md: 0 4px 16px rgba(0,0,0,.5);
    --shadow-lg: 0 16px 48px rgba(0,0,0,.6);
    --shadow-sticky: 2px 0 4px rgba(0,0,0,.4);

    /* Overlay */
    --overlay-bg: rgba(80,80,100,.82);

    /* Skeleton */
    --skeleton-from: #18181b;
    --skeleton-mid: #222226;

    /* Title gradient */
    --title-grad-start: #161618;
    --title-grad-end: #1a1a1e;

    /* Error badge zero */
    --badge-zero-bg: #1e1e22;
    --badge-zero-text: #52525b;

    /* Tier header */
    --tier-header-bg: #1a1a1e;

    /* Filter row bg */
    --filter-row-bg: #0c0c0e;

    /* Theme toggle */
    --toggle-bg: #2a2a2e;
    --toggle-hover: #3f3f46;
}

/* ═══════════════════════════════════════════════════
   Light theme
   ═══════════════════════════════════════════════════ */
[data-theme="light"] {
    /* Surfaces */
    --bg-base: #f8f9fa;
    --bg-panel: #ffffff;
    --bg-input: #f1f3f5;
    --bg-hover: rgba(0,0,0,.04);
    --bg-hover-subtle: rgba(0,0,0,.02);

    /* Borders */
    --border: #dee2e6;
    --border-subtle: #e9ecef;
    --border-focus: #adb5bd;

    /* Text */
    --text-primary: #212529;
    --text-body: #343a40;
    --text-muted: #495057;
    --text-dim: #6c757d;
    --text-ghost: #adb5bd;
    --text-placeholder: #ced4da;

    /* Accent (amber — slightly darker for contrast on white) */
    --accent: #d97706;
    --accent-hover: #b45309;
    --accent-text: #ffffff;
    --accent-glow: rgba(217,119,6,.2);
    --accent-tint: rgba(217,119,6,.06);
    --accent-tint-strong: rgba(217,119,6,.12);

    /* Secondary */
    --info: #0284c7;
    --info-tint: rgba(2,132,199,.06);
    --info-tint-strong: rgba(2,132,199,.14);
    --info-badge-bg: rgba(2,132,199,.1);

    /* Semantic */
    --success: #16a34a;
    --success-hover: #15803d;
    --success-glow: rgba(22,163,74,.2);
    --error: #dc2626;
    --error-hover: #b91c1c;
    --error-tint: rgba(220,38,38,.06);
    --error-tint-hover: rgba(220,38,38,.10);
    --warning: #ca8a04;
    --warning-tint: rgba(202,138,4,.06);
    --warning-tint-hover: rgba(202,138,4,.10);
    --status-ok: #16a34a;

    /* Sort highlight */
    --sort-row: rgba(217,119,6,.14);
    --sort-row-hover: rgba(217,119,6,.22);
    --sort-header: #f5d9aa;

    /* Shadows (lighter) */
    --shadow-sm: 0 1px 3px rgba(0,0,0,.08);
    --shadow-md: 0 4px 12px rgba(0,0,0,.10);
    --shadow-lg: 0 12px 36px rgba(0,0,0,.12);
    --shadow-sticky: 2px 0 4px rgba(0,0,0,.08);

    /* Overlay */
    --overlay-bg: rgba(0,0,0,.4);

    /* Skeleton */
    --skeleton-from: #e9ecef;
    --skeleton-mid: #dee2e6;

    /* Title gradient */
    --title-grad-start: #ffffff;
    --title-grad-end: #f8f9fa;

    /* Error badge zero */
    --badge-zero-bg: #e9ecef;
    --badge-zero-text: #adb5bd;

    /* Tier header */
    --tier-header-bg: #f1f3f5;

    /* Filter row bg */
    --filter-row-bg: #f8f9fa;

    /* Theme toggle */
    --toggle-bg: #dee2e6;
    --toggle-hover: #ced4da;
}

/* ═══════════════════════════════════════════════════
   Base styles
   ═══════════════════════════════════════════════════ */
* { margin: 0; padding: 0; box-sizing: border-box; }
html { font-size: 14px; -webkit-text-size-adjust: 100%; overflow-x: hidden;
       height: 100%; height: 100dvh; }
body { font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
       background: var(--bg-base); color: var(--text-body);
       height: 100%; display: flex; flex-direction: column;
       touch-action: manipulation; -webkit-font-smoothing: antialiased;
       transition: background .3s ease, color .3s ease;
       overflow: hidden; max-width: 100vw; width: 100%; }
button { cursor: pointer; font-family: inherit; }

/* ── Theme toggle button ───────────────────────── */
.theme-toggle { width: 36px; height: 36px; border: none; border-radius: 8px;
    background: var(--toggle-bg); color: var(--text-muted); font-size: 1.1rem;
    display: flex; align-items: center; justify-content: center;
    transition: all .2s; cursor: pointer; flex-shrink: 0;
    position: fixed; top: 12px; right: 16px; z-index: 55; }
.theme-toggle:hover { background: var(--toggle-hover); color: var(--text-primary); }

/* ── Sticky header wrapper ────────────────── */
.sticky-header { flex-shrink: 0; }

/* ── Page title ─────────────────────────────────── */
.page-title { padding: 16px 24px; font-size: 1.35rem; font-weight: 700; color: var(--text-primary);
              background: linear-gradient(135deg, var(--title-grad-start) 0%, var(--title-grad-end) 100%);
              border-bottom: 1px solid var(--border); flex-shrink: 0;
              letter-spacing: 0.3px; display: flex; align-items: center; gap: 10px; }
.page-title::before { content: ''; display: inline-block; width: 4px; height: 20px;
                      background: var(--accent); border-radius: 2px; }

/* ── Tab bar ───────────────────────────────── */
.tab-bar { display: flex; background: var(--bg-panel); border-bottom: 1px solid var(--border);
           flex-shrink: 0; overflow-x: auto; -webkit-overflow-scrolling: touch; }
.tab-bar::-webkit-scrollbar { display: none; }
.tab-btn { padding: 12px 28px; border: none; background: transparent; color: var(--text-ghost);
           font-size: 0.85rem; font-weight: 500; transition: all .25s ease;
           white-space: nowrap; min-height: 44px; position: relative; }
.tab-btn:hover { color: var(--text-muted); background: var(--bg-hover-subtle); }
.tab-btn.active { color: var(--text-primary); background: var(--bg-hover); }
.tab-btn.active::after { content: ''; position: absolute; bottom: 0; left: 12px; right: 12px;
                         height: 2px; background: var(--accent); border-radius: 1px; }

/* ── Tab content ───────────────────────────────── */
.tab-content { flex: 1; overflow: hidden; padding: 24px 24px 0 24px;
               display: flex; flex-direction: column;
               -webkit-overflow-scrolling: touch; }
.tab-pane { display: none; animation: fadeIn .25s ease; }
.tab-pane.active { display: flex; flex-direction: column; flex: 1; min-height: 0; }

/* Config tab scrollable body */
.config-body { flex: 1; overflow-y: auto; min-height: 0; -webkit-overflow-scrolling: touch; }
.empty-tab { color: var(--text-ghost); font-style: italic; margin-top: 48px; text-align: center; font-size: 0.9rem; }
@keyframes fadeIn { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: translateY(0); } }

/* ── Loading skeleton ──────────────────────────── */
.skeleton { background: linear-gradient(90deg, var(--skeleton-from) 25%, var(--skeleton-mid) 50%, var(--skeleton-from) 75%);
            background-size: 200% 100%; animation: shimmer 1.5s infinite; border-radius: 4px; }
.skeleton-line { height: 14px; margin-bottom: 10px; width: 100%; }
.skeleton-line:nth-child(2) { width: 80%; }
.skeleton-line:nth-child(3) { width: 60%; }
@keyframes shimmer { 0% { background-position: 200% 0; } 100% { background-position: -200% 0; } }

/* ── Config tab sections ───────────────────────── */
.config-section { margin-bottom: 24px; }
.section-header { display: flex; align-items: center; gap: 12px; padding: 12px 16px;
                  background: var(--bg-panel); border-radius: 8px; margin-bottom: 4px;
                  box-shadow: var(--shadow-sm); }
.section-title { font-size: 0.95rem; font-weight: 600; color: var(--text-primary); flex: 1; letter-spacing: 0.3px; }
.section-title-link { color: var(--accent); text-decoration: underline; cursor: pointer; }
.section-title-link:hover { color: var(--accent-hover); }
.btn-add { padding: 6px 16px; border: 1px solid var(--border); border-radius: 6px;
           background: var(--info-tint); color: var(--info); font-size: 0.75rem;
           font-weight: 500; transition: all .2s; min-height: 32px; }
.btn-add:hover { background: var(--info-tint-strong); border-color: var(--info); }

/* ── Tree items ────────────────────────────────── */
.tree { margin-left: 8px; border-left: 1px solid var(--border-subtle); padding-left: 8px; }
.tree-item { padding: 10px 14px; border-radius: 6px; cursor: pointer; display: flex;
             align-items: center; gap: 10px; font-size: 0.85rem; color: var(--text-muted);
             transition: all .15s ease; min-height: 44px; }
.tree-item:hover { background: var(--bg-hover); color: var(--text-primary); }
.tree-item .arrow { font-size: 10px; color: var(--text-ghost); transition: transform .25s ease;
                    width: 14px; text-align: center; }
.tree-item .arrow.open { transform: rotate(90deg); color: var(--info); }
.tree-item .label { flex: 1; }
.tree-item .tag { font-size: 0.65rem; color: var(--text-ghost); background: var(--bg-hover);
                  padding: 2px 8px; border-radius: 10px; text-transform: uppercase;
                  letter-spacing: 0.5px; font-weight: 500; }
.tree-children { margin-left: 16px; display: none; overflow: hidden; }
.tree-children.open { display: block; animation: slideDown .2s ease; }
@keyframes slideDown { from { opacity: 0; transform: translateY(-4px); } to { opacity: 1; transform: translateY(0); } }

/* ── Delete icon on tree items ─────────────────── */
.tree-delete { font-size: 0.8rem; color: var(--text-muted); transition: color .15s, background .15s; cursor: pointer;
    padding: 4px 8px; border-radius: 4px; flex-shrink: 0; line-height: 1; }
.tree-delete:hover { color: var(--error); background: var(--error-tint); }

/* ── Clickable leaf items styled as links ──────── */
.tree-link .label { color: var(--accent); cursor: pointer; }
.tree-link:hover .label { text-decoration: underline; }
.loc-name-link { color: var(--accent); text-decoration: underline; cursor: pointer; flex: 0 0 auto !important; }
.loc-name-link:hover { color: var(--accent-hover); }
.tree-item.tree-failed .label,
.tree-item .label.tree-failed-link,
.loc-name-link.tree-failed-link { color: var(--error) !important; font-weight: 600; }
.tree-pending { display: none; }
.tree-pending .label { color: var(--text-ghost); text-decoration: none !important; cursor: default; }
.tree-pending .arrow { color: var(--text-ghost) !important; }

/* ── Modal overlay ─────────────────────────────── */
.modal-overlay { display: none; position: fixed; inset: 0; background: var(--overlay-bg);
                 backdrop-filter: blur(4px); -webkit-backdrop-filter: blur(4px);
                 z-index: 100; justify-content: center; align-items: center;
                 animation: fadeIn .2s ease; }
.modal-overlay.open { display: flex; }
.modal { background: var(--bg-panel); border: 2px solid var(--border-focus); border-radius: 12px;
         width: 90vw; height: 90vh; display: flex; flex-direction: column;
         box-shadow: var(--shadow-lg); animation: modalIn .25s ease; }
@keyframes modalIn { from { opacity: 0; transform: scale(.97) translateY(8px); }
                     to { opacity: 1; transform: scale(1) translateY(0); } }
.modal-title { padding: 16px 20px; font-size: 0.9rem; font-weight: 600;
               border-bottom: 1px solid var(--border); color: var(--text-primary); flex-shrink: 0;
               display: flex; align-items: center; gap: 8px; }
.modal-close-x { margin-left: auto; width: 30px; height: 30px; border-radius: 6px; border: 1px solid var(--border-focus);
    background: var(--border-focus); color: var(--text-primary); cursor: pointer; font-size: 1rem; font-weight: 700; }
.modal-close-x:hover { background: var(--error); color: #fff; border-color: var(--error); }
.modal-title .breadcrumb-sep { color: var(--text-ghost); font-weight: 400; }
.modal-title .breadcrumb-accent { color: var(--accent); }
.modal-title .breadcrumb-hint { color: var(--text-muted); font-weight: 400; font-size: 0.75rem; font-style: italic; }
.btn-copy { background: transparent; border: 1px solid var(--border); cursor: pointer; font-size: 0.85rem;
            padding: 6px 10px; border-radius: 6px; transition: background .15s, opacity .15s;
            opacity: 0.8; margin-right: auto; flex-shrink: 0; }
.btn-copy:hover { background: var(--bg-hover); opacity: 1; }
.modal-body { flex: 1; overflow-y: auto; padding: 16px 20px; display: flex; flex-direction: column; }
.modal-body textarea { width: 100%; height: 100%; flex: 1;
                       font-family: 'Fira Code', 'Cascadia Code', 'JetBrains Mono', monospace;
                       font-size: 0.8rem; line-height: 1.6; padding: 16px; border-radius: 8px;
                       border: 1px solid var(--border); background: var(--bg-input);
                       color: var(--text-body); resize: none; transition: border-color .2s; }
.modal-body textarea:focus { outline: none; border-color: var(--border-focus); }
.modal-key-row { display: flex; align-items: center; gap: 10px; padding: 0 0 10px;
    border-bottom: 1px solid var(--border); margin-bottom: 10px; flex-shrink: 0; }
.modal-key-label { min-width: 160px; font-size: 0.78rem; font-weight: 600; color: var(--text-muted); }
.modal-key-input { flex: 1; max-width: 340px; padding: 6px 9px; border-radius: 6px;
    border: 1px solid var(--border); background: var(--bg-input);
    color: var(--text-body); font-size: 0.82rem; font-family: monospace; }
.modal-key-input:focus { outline: none; border-color: var(--border-focus); }
.modal-key-input.modal-key-changed { border-color: var(--warning); box-shadow: inset 0 0 0 1px var(--warning); }
.modal-form-view { width: 100%; height: 100%; overflow: auto; border: 1px solid var(--border);
    border-radius: 8px; background: var(--bg-input); padding: 12px; }
.modal-code-view { display: none; }
.modal-body.mode-code .modal-form-view { display: none; }
.modal-body.mode-code .modal-code-view { display: block; }
.modal-mode-controls { display: flex; gap: 8px; margin-right: auto; }
.btn-mode.active { background: var(--bg-hover); color: var(--text-body); border-color: var(--border-focus); }

/* ── Form view: rows & keys ─────────────────────────── */
.fv-row { display: flex; align-items: center; flex-wrap: wrap; gap: 10px; margin: 6px 0; }
.fv-key { font-size: 0.78rem; word-break: break-word; }
/* Section header keys (collapsible/static blocks) — bold and prominent */
.fv-head .fv-key { color: var(--text-body); font-weight: 600; }
/* Leaf field labels — fixed width so hints always have room */
.fv-row > .fv-key { flex: 0 0 180px; color: var(--text-muted); font-weight: 400; }
.fv-input { flex: 1 1 0; min-width: 80px; max-width: 250px; padding: 7px 9px; border-radius: 6px;
    border: 1px solid var(--border); background: var(--bg-card); color: var(--text-body); font-size: 0.78rem; }
/* Hide number spinner arrows */
input[type="number"].fv-input { -moz-appearance: textfield; }
input[type="number"].fv-input::-webkit-inner-spin-button,
input[type="number"].fv-input::-webkit-outer-spin-button { -webkit-appearance: none; margin: 0; }
.fv-input:focus { outline: none; border-color: var(--border-focus); }
.fv-input.fv-input-error { border-color: var(--error); box-shadow: inset 0 0 0 1px var(--error); }
.fv-input.fv-readonly { background: var(--bg-body); color: var(--text-muted); cursor: default; border-color: transparent; }
.fv-hint { color: var(--text-muted); font-size: 0.75rem; white-space: nowrap; flex-shrink: 0; }
/* Dropdown selects (e.g. UI locations) */
select.fv-select { cursor: pointer; }
select.fv-select.fv-input-error { border-color: var(--error); background: var(--error-tint);
    color: var(--error); outline: 2px solid var(--error); outline-offset: -2px; }
.fv-root-comment { color: var(--text-muted); font-size: 0.75rem; margin-bottom: 8px; font-style: italic; }
.fv-inline { margin-left: 8px; }
/* ── Form view: blocks & indentation ────────────────── */
.fv-block { border: 1px solid var(--border-subtle); border-radius: 6px; padding: 8px; margin: 8px 0; }
.fv-head { display: flex; align-items: center; gap: 6px; cursor: pointer; margin-bottom: 6px; }
.fv-head-static { cursor: default; }
.fv-arrow { width: 14px; color: var(--text-muted); text-align: center; }
/* Child content indented under parent key (not root level) */
.fv-block > .fv-obj { padding-left: 16px; }
.fv-list-items { padding-left: 16px; }
.fv-list-row { display: flex; align-items: center; flex-wrap: wrap; gap: 8px; margin: 6px 0; }
.fv-del, .fv-add { border: 1px solid var(--border); border-radius: 5px; background: transparent;
    color: var(--text-muted); padding: 5px 9px; font-size: 0.72rem; }
.fv-del:hover { color: var(--error); background: var(--error-tint); }
.fv-add:hover { background: var(--bg-hover); color: var(--text-body); }
.fv-focus-error { display: none; color: var(--error); background: var(--error-tint); border: 1px solid var(--error);
    border-radius: 6px; padding: 6px 8px; font-size: 0.72rem; flex: 0 0 100%; width: 100%; }
.fv-focus-error.show { display: block; }
.fv-template-content { margin: 4px 0 0 16px; }
.fv-template-pre { background: var(--bg-card); border: 1px solid var(--border-subtle);
    border-radius: 6px; padding: 8px 10px; font-size: 0.75rem; line-height: 1.4;
    overflow: auto; max-height: 300px; white-space: pre-wrap; word-break: break-all;
    color: var(--text-body); margin: 0; }
.modal-body .error-msg { color: var(--accent); font-size: 0.75rem; margin-top: 8px; min-height: 20px; }
.modal-body .cm-editor { flex: 1; border-radius: 8px; overflow: hidden;
                         border: 1px solid var(--border); font-size: 0.8rem; }
.modal-body .cm-editor.cm-focused { border-color: var(--border-focus); outline: none; }
.modal-footer { display: flex; flex-direction: column; gap: 8px; padding: 14px 20px;
                border-top: 1px solid var(--border); flex-shrink: 0; }
.modal-footer-controls { display: flex; gap: 10px; align-items: center; }
.modal-update-note { border: 1px solid var(--warning); background: var(--warning-tint);
    color: var(--text-body); border-radius: 6px; padding: 6px 10px; font-size: 0.74rem;
    display: flex; flex-direction: column; gap: 4px; width: 100%; box-sizing: border-box; }
.modal-update-note.success { border-color: var(--success); background: var(--success-tint); }
.modal-update-note.error { border-color: var(--error); background: var(--error-tint); }
.modal-update-note-header { display: flex; align-items: center; gap: 8px; }
.modal-update-note-header span { flex: 1; font-weight: 600; }
.modal-update-note-list { margin: 0; padding: 0; list-style: none; display: flex; flex-direction: column; gap: 2px;
    max-height: 120px; overflow-y: auto; }
.modal-update-note-list li button { background: none; border: none; cursor: pointer; color: var(--error);
    text-decoration: underline; font-size: 0.74rem; padding: 1px 0; text-align: left; }
.modal-update-note-list li button:hover { color: var(--error-hover); }
.modal-update-note-close { border: 1px solid var(--border); background: transparent; color: var(--text-muted);
    width: 20px; height: 20px; line-height: 1; border-radius: 4px; cursor: pointer; flex-shrink: 0; }
.modal-update-note-close:hover { color: var(--text-body); background: var(--bg-hover); }
.btn-save { padding: 8px 24px; border: none; border-radius: 6px; background: var(--accent);
            color: var(--accent-text); font-size: 0.8rem; font-weight: 600; transition: all .2s;
            min-height: 36px; }
.btn-save:hover { background: var(--accent-hover); box-shadow: 0 2px 8px var(--accent-glow); }
.btn-save:disabled { opacity: .4; cursor: not-allowed; box-shadow: none; }
.btn-cancel { padding: 8px 24px; border: 1px solid var(--border); border-radius: 6px;
              background: transparent; color: var(--text-muted); font-size: 0.8rem; transition: all .2s;
              min-height: 36px; }
.btn-cancel:hover { background: var(--bg-hover); color: var(--text-body); border-color: var(--border-focus); }

/* ── Add-location modal extras ─────────────────── */
.modal-body .field-group { margin-bottom: 16px; }
.modal-body .field-group label { display: block; font-size: 0.75rem; color: var(--text-dim);
                                 margin-bottom: 6px; text-transform: uppercase;
                                 letter-spacing: 0.5px; font-weight: 500; }
.modal-body .field-group input { width: 100%; padding: 10px 12px; border-radius: 6px;
                                  border: 1px solid var(--border); background: var(--bg-input);
                                  color: var(--text-body); font-size: 0.85rem; transition: border-color .2s; }
.modal-body .field-group input:focus { outline: none; border-color: var(--border-focus); }

/* ── Status bar ────────────────────────────────── */
.status-bar { padding: 8px 16px; font-size: 0.7rem; color: var(--text-ghost); background: var(--bg-input);
              border-top: 1px solid var(--border-subtle); flex-shrink: 0; display: flex; gap: 20px;
              letter-spacing: 0.3px; text-transform: uppercase; }
.status-bar .ok { color: var(--status-ok); }
.status-bar .err { color: var(--accent); }

/* ── Toast notifications ───────────────────────── */
.toast { position: fixed; top: 20px; right: 20px; padding: 12px 20px; border-radius: 8px;
         font-size: 0.8rem; font-weight: 500; z-index: 400; box-shadow: var(--shadow-md);
         transform: translateY(-20px); opacity: 0; transition: all .3s ease; color: #fff; }
.toast.show { opacity: 1; transform: translateY(0); }
.toast.success { background: var(--success); }
.toast.error { background: var(--error); }

/* ═══════════════════════════════════════════════════
   Data Table Styles
   ═══════════════════════════════════════════════════ */

/* ── Sync bar ──────────────────────────────────── */
.sync-bar { display: flex; align-items: center; gap: 12px; padding: 10px 16px; flex-shrink: 0;
            margin-bottom: 16px; background: var(--bg-panel); border-radius: 8px;
            border: 1px solid var(--border); box-shadow: var(--shadow-sm); }
.sync-bar.hidden { display: none; }
.sync-banner { display: none; margin: 0 16px 10px 16px; padding: 8px 10px; border-radius: 8px;
    border: 1px solid var(--error); background: var(--error-tint); font-size: 0.74rem; color: var(--text-body); }
.sync-banner.open { display: block; }
.sync-banner a { color: var(--error); font-weight: 600; text-decoration: underline; cursor: pointer; margin-right: 8px; }
.sync-bar .btn-sync-save { padding: 6px 20px; border: none; border-radius: 6px;
                           background: var(--success); color: #fff; font-size: 0.75rem;
                           font-weight: 600; transition: all .2s; min-height: 32px; }
.sync-bar .btn-sync-save:hover { background: var(--success-hover); box-shadow: 0 2px 8px var(--success-glow); }
.sync-bar .btn-sync-save:disabled { opacity: .4; cursor: not-allowed; }
.sync-bar .btn-sync-cancel { padding: 6px 20px; border: 1px solid var(--border); border-radius: 6px;
                             background: transparent; color: var(--text-muted); font-size: 0.75rem;
                             transition: all .2s; min-height: 32px; }
.sync-bar .btn-sync-cancel:hover { background: var(--bg-hover); color: var(--text-body); }
.sync-bar .btn-sync-cancel:disabled { opacity: .4; cursor: not-allowed; }
.sync-bar .sync-label { font-size: 0.75rem; color: var(--accent); flex: 1; font-weight: 500; }
.sync-bar .btn-sync-deploy { padding: 6px 20px; border: none; border-radius: 6px;
                           background: var(--success); color: #fff; font-size: 0.75rem;
                           font-weight: 600; transition: all .2s; min-height: 32px; }
.sync-bar .btn-sync-deploy:hover { background: var(--success-hover); box-shadow: 0 2px 8px var(--success-glow); }
.sync-bar .btn-sync-deploy:disabled { opacity: .4; cursor: not-allowed; }
.sync-bar .btn-sync-undo { padding: 6px 20px; border: 1px solid var(--border); border-radius: 6px;
                             background: transparent; color: var(--text-muted); font-size: 0.75rem;
                             transition: all .2s; min-height: 32px; }
.sync-bar .btn-sync-undo:hover { background: var(--bg-hover); color: var(--text-body); }
.sync-bar .btn-sync-undo:disabled { opacity: .4; cursor: not-allowed; }
.sync-bar .btn-save { padding: 6px 20px; border: none; border-radius: 6px;
                      background: var(--accent); color: var(--accent-text); font-size: 0.75rem;
                      font-weight: 600; transition: all .2s; min-height: 32px; }
.sync-bar .btn-save:hover { background: var(--accent-hover); box-shadow: 0 2px 8px var(--accent-glow); }

/* ── Table settings ────────────────────────────── */
.table-settings { display: flex; align-items: center; gap: 10px; margin-bottom: 12px; flex-shrink: 0; }
.table-settings label { font-size: 0.75rem; color: var(--text-dim); }
.table-settings input[type="number"] { width: 60px; padding: 6px 8px; border-radius: 6px;
    border: 1px solid var(--border); background: var(--bg-input); color: var(--text-body);
    font-size: 0.75rem; text-align: center; }

/* ── DataTable container (flex child of tab-pane) */
.dt-container { display: flex; flex-direction: column; flex: 1; min-height: 0; }

/* ── Data table ────────────────────────────────── */
.data-table-wrap { flex: 1; min-height: 0; overflow: auto; border-radius: 8px 8px 0 0;
                   border: 1px solid var(--border); border-bottom: none; box-shadow: var(--shadow-sm); }
.data-table { width: 100%; border-collapse: separate; border-spacing: 0; font-size: 0.75rem; table-layout: auto; }
.data-table th, .data-table td { padding: 8px 12px; border: 1px solid var(--border-subtle);
    text-align: left; white-space: nowrap; }
.data-table thead th { background: var(--bg-panel); color: var(--text-muted); font-weight: 600;
    position: sticky; top: 0; z-index: 2; cursor: pointer; user-select: none;
    text-transform: uppercase; letter-spacing: 0.3px; font-size: 0.65rem; }
.data-table.has-tiers thead th { top: 28px; }
.data-table thead th:hover { background: var(--bg-hover); color: var(--text-primary); }
.data-table thead th.sort-active-col { background: var(--sort-header) !important; color: var(--accent); }
.data-table thead th .sort-arrow { font-size: 10px; margin-left: 4px; color: var(--text-placeholder); }
.data-table thead th .sort-arrow.active { color: var(--accent); }

/* ── Tier over-header ──────────────────────────── */
.data-table thead .tier-header th { background: var(--tier-header-bg); color: var(--info); font-weight: 700;
    text-align: center; font-size: 0.65rem; text-transform: uppercase; letter-spacing: 1px;
    position: sticky; top: 0; z-index: 3; }

/* ── Filter row ────────────────────────────────── */
.data-table thead .filter-row th { background: var(--filter-row-bg); padding: 4px 6px;
    position: sticky; top: 28px; z-index: 2; }
.data-table.has-tiers thead .filter-row th { top: 56px; }
.data-table thead .filter-row input { width: 100%; padding: 5px 8px; border-radius: 4px;
    border: 1px solid var(--border); background: var(--bg-input); color: var(--text-body);
    font-size: 0.72rem; transition: border-color .2s, box-shadow .2s; }
.data-table thead .filter-row input::placeholder { color: var(--text-muted); font-style: italic; }
.data-table thead .filter-row input:focus { outline: none; border-color: var(--accent); }
.data-table thead .filter-row input.filter-active { border-color: var(--accent);
    background: var(--sort-row); }

/* Clear-all filters button */
.filter-clear-all { display: inline-flex; align-items: center; justify-content: center;
    width: 20px; height: 20px; border-radius: 50%; background: var(--error); color: #fff;
    font-size: 0.6rem; font-weight: 700; cursor: pointer; transition: background .2s;
    line-height: 1; }
.filter-clear-all:hover { background: var(--error-hover); }

/* Filter label */
.filter-label { font-size: 0.72rem; color: var(--text-muted); font-style: italic;
    text-transform: lowercase; white-space: nowrap; }

/* ── Table body rows ───────────────────────────── */
.data-table tbody tr { transition: background .15s; }
.data-table tbody tr:hover { background: var(--bg-hover-subtle); }
.data-table tbody tr.group-first td:first-child { border-top: 2px solid var(--border); }
.data-table tbody tr.group-latest { background: var(--sort-row); }
.data-table tbody tr.group-latest:hover { background: var(--sort-row-hover); }

/* ── Group count badge ─────────────────────────── */
.group-count { display: inline-block; min-width: 20px; padding: 2px 8px; border-radius: 10px;
    background: var(--info-badge-bg); color: var(--info); font-size: 0.6rem; font-weight: 600;
    text-align: center; margin-right: 4px; }

/* ── Changed / diff hints ──────────────────────── */
.row-changed { background: var(--warning-tint) !important; }
.row-changed:hover { background: var(--warning-tint-hover) !important; }
.row-removed { background: var(--error-tint) !important; opacity: .7; }
.row-removed:hover { background: var(--error-tint-hover) !important; }
.cell-changed { color: var(--warning) !important; font-weight: 600; }
.removed-marker { color: var(--error); font-weight: 700; font-size: 14px; cursor: help; }
.changed-hint { display: inline-block; width: 8px; height: 8px; border-radius: 50%;
    background: var(--warning); margin-left: 4px; vertical-align: middle; }

/* ── Error count badge ─────────────────────────── */
.error-badge { display: inline-block; min-width: 20px; padding: 2px 8px; border-radius: 10px;
    background: var(--error); color: #fff; font-size: 0.6rem; font-weight: 600; text-align: center;
    cursor: pointer; transition: background .2s; }
.error-badge:hover { background: var(--error-hover); }
.error-badge.zero { background: var(--badge-zero-bg); color: var(--badge-zero-text); cursor: default; }

/* ── Error popup ───────────────────────────────── */
.error-popup-overlay { display: none; position: fixed; inset: 0; background: var(--overlay-bg);
    backdrop-filter: blur(4px); z-index: 200; justify-content: center; align-items: center; }
.error-popup-overlay.open { display: flex; }
.error-popup { background: var(--bg-panel); border: 1px solid var(--border); border-radius: 12px;
    padding: 24px; max-width: 600px; width: 90vw; max-height: 60vh; overflow-y: auto;
    box-shadow: var(--shadow-lg); }
.error-popup h3 { color: var(--accent); margin-bottom: 16px; font-size: 0.9rem; }
.error-popup ul { list-style: disc; padding-left: 20px; }
.error-popup li { color: var(--text-body); font-size: 0.75rem; margin-bottom: 6px;
    font-family: 'Fira Code', monospace; }
.error-popup .btn-close { margin-top: 16px; padding: 8px 20px; border: 1px solid var(--border);
    border-radius: 6px; background: transparent; color: var(--text-muted); font-size: 0.75rem;
    cursor: pointer; transition: all .2s; }
.error-popup .btn-close:hover { background: var(--bg-hover); color: var(--text-body); }

/* ── BGP percentage badge ──────────────────────── */
.bgp-badge { display: inline-block; min-width: 36px; padding: 2px 8px; border-radius: 10px;
    background: var(--accent); color: var(--bg-body); font-size: 0.6rem; font-weight: 600;
    text-align: center; cursor: pointer; transition: background .2s; }
.bgp-badge:hover { filter: brightness(1.15); }
.bgp-badge.bgp-zero { background: var(--error); color: #fff; }
.bgp-badge.bgp-full { background: var(--badge-zero-bg); color: var(--badge-zero-text); }
.bgp-na { color: var(--text-muted); font-size: 0.7rem; font-style: italic; text-align: center; }

/* ── BGP popup details ─────────────────────────── */
.bgp-popup .bgp-section { margin-bottom: 12px; }
.bgp-popup .bgp-section strong { display: block; margin-bottom: 6px; font-size: 0.75rem;
    color: var(--text-body); }
.bgp-popup .bgp-acc { color: var(--accent); }
.bgp-popup .bgp-inacc { color: var(--error); }
.bgp-popup .bgp-none { color: var(--text-muted); font-style: italic; }

/* ── Editable dropdowns ────────────────────────── */
.data-table select { padding: 4px 6px; border-radius: 4px; border: 1px solid var(--border);
    background: var(--bg-input); color: var(--text-body); font-size: 0.7rem; cursor: pointer; }
.data-table select:disabled { opacity: .5; cursor: not-allowed; }
.data-table select.changed { border-color: var(--warning); background: var(--warning-tint); }

/* ── Pagination ────────────────────────────────── */
.pagination { display: flex; align-items: center; justify-content: center; gap: 6px; flex-shrink: 0;
    margin-top: 0; padding: 6px 0; }
.pagination button { padding: 6px 12px; border: 1px solid var(--border); border-radius: 6px;
    background: var(--bg-panel); color: var(--text-muted); font-size: 0.75rem; cursor: pointer;
    transition: all .2s; min-height: 32px; }
.pagination button:hover { background: var(--bg-hover); color: var(--text-primary); }
.pagination button.active { background: var(--accent); color: var(--accent-text); border-color: var(--accent); }
.pagination button:disabled { opacity: .4; cursor: not-allowed; }
.pagination .page-info { font-size: 0.7rem; color: var(--text-dim); margin: 0 8px; }

/* ── Warning toast ─────────────────────────────── */
.warning-toast { position: fixed; top: 20px; right: 20px; background: var(--accent);
    color: var(--accent-text); padding: 12px 20px; border-radius: 8px; font-size: 0.8rem;
    font-weight: 600; z-index: 300; box-shadow: var(--shadow-md); animation: toast-in .3s ease-out; }
.warning-toast.fade-out { animation: toast-out .3s ease-in forwards; }
@keyframes toast-in { from { opacity: 0; transform: translateY(-20px); } to { opacity: 1; transform: translateY(0); } }
@keyframes toast-out { from { opacity: 1; } to { opacity: 0; transform: translateY(-20px); } }

/* ── Timestamp display ─────────────────────────── */
.ts-zero { color: var(--text-ghost); font-style: italic; }

/* ═══════════════════════════════════════════════════
   Responsive — Mobile (≤768px)
   ═══════════════════════════════════════════════════ */
@media (max-width: 768px) {
    html { font-size: 15px; }

    .page-title { padding: 8px 10px; font-size: 0.95rem; padding-right: 48px; }
    .page-title::before { height: 14px; width: 3px; }

    .tab-bar { gap: 0; width: 100%; }
    .tab-btn { padding: 9px 10px; font-size: 0.75rem; flex: 1; text-align: center; }

    .tab-content { padding: 10px 6px; overflow: hidden; }

    .section-header { padding: 8px 6px; gap: 8px; }
    .section-title { font-size: 0.82rem; }
    .btn-add { padding: 5px 10px; min-height: 30px; font-size: 0.72rem; white-space: nowrap; }

    .tree { margin-left: 0; padding-left: 2px; border-left: none; }
    .tree-item { padding: 9px 6px; gap: 6px; font-size: 0.8rem; min-height: 42px; }
    .tree-children { margin-left: 4px; }

    .modal { width: 100vw; height: 100vh; border-radius: 0; border: none; }
    .modal-title { padding: 14px 16px; font-size: 0.85rem; }
    .modal-body { padding: 12px 14px; }
    .modal-body textarea { font-size: 0.78rem; padding: 12px; }
    .modal-body .cm-editor { font-size: 0.78rem; }
    .modal-footer { padding: 12px 14px; }
    .btn-save, .btn-cancel { padding: 10px 20px; min-height: 44px; font-size: 0.85rem; }

    .data-table th, .data-table td { padding: 8px 8px; font-size: 0.72rem; }
    .data-table thead th:first-child,
    .data-table tbody td:first-child { position: sticky; left: 0; z-index: 1;
        background: inherit; box-shadow: var(--shadow-sticky); }
    .data-table thead th:first-child { z-index: 3; background: var(--bg-panel); }

    .sync-bar { padding: 8px 6px; gap: 6px; flex-wrap: wrap; }
    .sync-bar .sync-label { font-size: 0.72rem; }
    .sync-bar .btn-sync-save,
    .sync-bar .btn-sync-cancel { padding: 5px 12px; font-size: 0.7rem; min-height: 28px; }

    .pagination button { min-height: 34px; padding: 5px 8px; font-size: 0.7rem; }

    .status-bar { padding: 5px 6px; gap: 8px; font-size: 0.58rem; }

    .toast { right: 6px; left: 6px; font-size: 0.75rem; padding: 10px 14px; }
    .error-popup { padding: 14px; max-height: 80vh; }

    .theme-toggle { top: 6px; right: 6px; width: 30px; height: 30px; font-size: 0.9rem; }
}

/* ═══════════════════════════════════════════════════
   Location mini table (config tab)
   ═══════════════════════════════════════════════════ */

.loc-table-container { margin: 8px 0 4px; }
.loc-table-wrap { overflow-x: auto; border: 1px solid var(--border); border-radius: 6px;
    box-shadow: var(--shadow-sm); }
.loc-table { width: 100%; border-collapse: separate; border-spacing: 0; font-size: 0.75rem; }
.loc-table th, .loc-table td { padding: 6px 10px; border: 1px solid var(--border-subtle);
    text-align: left; white-space: nowrap; }

/* Tier over-header */
.loc-table thead .tier-header th { background: var(--tier-header-bg); color: var(--info);
    font-weight: 700; text-align: center; font-size: 0.6rem; text-transform: uppercase;
    letter-spacing: 1px; padding: 4px 8px; }
.loc-table thead .tier-header th.tier-empty { background: transparent; border-color: transparent; }

/* Column headers */
.loc-table thead .col-header th { background: var(--bg-panel); color: var(--text-muted);
    font-weight: 600; cursor: pointer; user-select: none; text-transform: uppercase;
    letter-spacing: 0.3px; font-size: 0.65rem; }
.loc-table thead .col-header th:hover { background: var(--bg-hover); color: var(--text-primary); }
.loc-table thead .col-header th.sort-active { background: var(--sort-header); color: var(--accent); }
.loc-table thead th .sort-arrow { font-size: 8px; margin-left: 3px; color: var(--text-placeholder); }
.loc-table thead th .sort-arrow.active { color: var(--accent); }

/* Filter row */
.loc-table thead .filter-row th { background: var(--filter-row-bg); padding: 3px 5px; }
.loc-table thead .filter-row input { width: 100%; padding: 3px 6px; border-radius: 3px;
    border: 1px solid var(--border); background: var(--bg-input); color: var(--text-body);
    font-size: 0.68rem; transition: border-color .2s; }
.loc-table thead .filter-row input::placeholder { color: var(--text-muted); font-style: italic; }
.loc-table thead .filter-row input:focus { outline: none; border-color: var(--accent); }
.loc-table thead .filter-row input.filter-active { border-color: var(--accent);
    background: var(--sort-row); }
.loc-filter-first { display: flex; align-items: center; gap: 4px; }
.loc-filter-first input { flex: 1; min-width: 0; }

/* Body rows */
.loc-table tbody tr { transition: background .15s; }
.loc-table tbody tr:hover { background: var(--bg-hover); }
.loc-table tbody td { color: var(--text-body); font-size: 0.75rem; }
.loc-node-link { color: var(--accent); text-decoration: underline; cursor: pointer; }
.loc-node-link:hover { color: var(--accent-hover); }
.loc-chevron-link { color: var(--accent); text-decoration: underline; cursor: pointer;
    font-size: 1.1rem; font-weight: bold; padding: 0 4px; }
.loc-chevron-link:hover { color: var(--accent-hover); }
.loc-node-text { color: var(--text-ghost); text-decoration: none; cursor: default; }

/* Node ID links in data tables (servers, clients) */
.dt-node-link { color: var(--accent); text-decoration: underline; cursor: pointer; }
.dt-node-link:hover { color: var(--accent-hover); }
.dt-chevron-link { color: var(--accent); text-decoration: underline; cursor: pointer;
    font-size: 1.1rem; font-weight: bold; padding: 0 4px; }
.dt-chevron-link:hover { color: var(--accent-hover); }

/* Empty / loading / error states */
.loc-table-empty { padding: 12px; color: var(--text-ghost); font-style: italic;
    font-size: 0.8rem; text-align: center; }
.loc-table-loading { padding: 12px; color: var(--text-muted); font-style: italic;
    font-size: 0.8rem; text-align: center; }
.loc-table-error { padding: 12px; color: var(--error); font-size: 0.8rem; text-align: center; }

/* Node counts in location header (plain text) */
.loc-counts { margin-left: auto; font-size: 0.72rem; color: var(--text-muted); font-weight: normal; }

/* Config-only rows (not in KV) */
.loc-config-only td { color: var(--text-ghost) !important; font-style: italic; }

/* Failed rows (validation errors) */
.loc-row-failed .loc-node-link { color: var(--error) !important; }

/* Per-row delete (✕) */
.loc-row-delete { color: var(--text-ghost); cursor: pointer; font-size: 0.8rem; padding: 0 4px; }
.loc-row-delete:hover { color: var(--error); }
.loc-row-delete.is-deleted { color: var(--error); opacity: 0.6; cursor: default; }
.loc-row-pending { opacity: 0.65; }
.loc-row-pending td { color: var(--text-ghost) !important; }

/* Pagination bar */
.loc-pagination { display: flex; align-items: center; gap: 10px; padding: 6px 8px; font-size: 0.75rem; }
.loc-pagination button { background: var(--bg-card); color: var(--text-body); border: 1px solid var(--border);
    border-radius: 4px; padding: 2px 10px; cursor: pointer; font-size: 0.75rem; }
.loc-pagination button:disabled { opacity: 0.4; cursor: default; }
.loc-pagination button:hover:not(:disabled) { background: var(--bg-hover); }
.loc-page-info { color: var(--text-muted); }