/* ============================================================
   PRIMORA DESIGN SYSTEM
   Signal-console UI. Dark-first zinc, vermilion accent,
   Geist Sans + Geist Mono. Instrument-panel discipline:
   hairlines, tabular numerals, no decoration.
   ============================================================ */

/* Vendored via @fontsource — self-hosted, no runtime Google dependency
   (the nginx CSP only allows 'self'). */
@import "@fontsource/geist/400.css";
@import "@fontsource/geist/500.css";
@import "@fontsource/geist/600.css";
@import "@fontsource/geist/700.css";
@import "@fontsource/geist-mono/400.css";
@import "@fontsource/geist-mono/500.css";

@tailwind base;
@tailwind components;
@tailwind utilities;

/* ------------------------------------------------------------
   TOKENS
   ------------------------------------------------------------ */

:root {
  /* surfaces — neutral zinc, no hue tint */
  --bg: #0a0a0b;
  --bg-panel: #0f0f11;
  --surface: #141416;
  --surface-2: #1b1b1f;
  --surface-3: #26262b;

  /* borders — hairline discipline */
  --border: #222227;
  --border-strong: #303036;

  /* text */
  --text-1: #f4f4f5;
  --text-2: #a2a2ab;
  --text-3: #63636d;

  /* accent — Primora vermilion (signal light) */
  --accent: #f4693a;
  --accent-hover: #ff7c4e;
  --accent-active: #d8552b;
  --accent-fg: #1c0d05;
  --accent-muted: rgba(244, 105, 58, 0.12);
  --accent-border: rgba(244, 105, 58, 0.35);

  /* semantic */
  --success: #4cc38a;
  --success-muted: rgba(76, 195, 138, 0.12);
  --warning: #f5a623;
  --warning-muted: rgba(245, 166, 35, 0.1);
  --error: #e5484d;
  --error-muted: rgba(229, 72, 77, 0.12);
  --info: #70b8ff;
  --info-muted: rgba(112, 184, 255, 0.12);

  /* geometry */
  --radius-sm: 6px;
  --radius: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;

  /* shadows — tight and dark, elevation by lightness */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.4);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.45);
  --shadow-lg: 0 12px 32px rgba(0, 0, 0, 0.55);
  --shadow-overlay: 0 16px 48px rgba(0, 0, 0, 0.6), 0 0 0 1px rgba(255, 255, 255, 0.05);

  /* type */
  --font-sans: "Geist", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-mono: "Geist Mono", "JetBrains Mono", ui-monospace, "SF Mono", monospace;

  color-scheme: dark;
}

html.light {
  --bg: #fafaf9;
  --bg-panel: #ffffff;
  --surface: #ffffff;
  --surface-2: #f4f4f2;
  --surface-3: #e8e8e4;

  --border: #e5e5e1;
  --border-strong: #d4d4cf;

  --text-1: #1c1c1a;
  --text-2: #57575a;
  --text-3: #9c9c98;

  --accent: #d94d22;
  --accent-hover: #c74318;
  --accent-active: #b83c14;
  --accent-fg: #ffffff;
  --accent-muted: rgba(217, 77, 34, 0.08);
  --accent-border: rgba(217, 77, 34, 0.32);

  --success: #18794e;
  --success-muted: rgba(24, 121, 78, 0.1);
  --warning: #a15c07;
  --warning-muted: rgba(161, 92, 7, 0.1);
  --error: #cd2b31;
  --error-muted: rgba(205, 43, 49, 0.08);
  --info: #006adc;
  --info-muted: rgba(0, 106, 220, 0.08);

  --shadow-sm: 0 1px 2px rgba(24, 20, 16, 0.05);
  --shadow-md: 0 4px 12px rgba(24, 20, 16, 0.08);
  --shadow-lg: 0 12px 32px rgba(24, 20, 16, 0.12);
  --shadow-overlay: 0 16px 48px rgba(24, 20, 16, 0.18), 0 0 0 1px rgba(24, 20, 16, 0.04);

  color-scheme: light;
}

/* ------------------------------------------------------------
   BASE
   ------------------------------------------------------------ */

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

html {
  font-size: 15px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

body {
  font-family: var(--font-sans);
  font-size: 0.875rem;
  background: var(--bg);
  color: var(--text-1);
  min-height: 100vh;
  line-height: 1.55;
  letter-spacing: -0.006em;
  font-feature-settings: "ss01";
}

h1, h2, h3, h4, h5, h6 {
  font-weight: 600;
  letter-spacing: -0.025em;
  line-height: 1.2;
  color: var(--text-1);
}

h1 { font-size: 1.375rem; }
h2 { font-size: 1.125rem; }
h3 { font-size: 0.9375rem; }

p { color: var(--text-2); }

a {
  color: var(--accent);
  text-decoration: none;
}
a:hover { color: var(--accent-hover); }

code, kbd, samp, pre {
  font-family: var(--font-mono);
}

code {
  font-size: 0.8125em;
  background: var(--surface-2);
  padding: 0.125em 0.375em;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  color: var(--text-1);
}

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}
:focus:not(:focus-visible) { outline: none; }

::selection {
  background: var(--accent-muted);
  color: var(--text-1);
}

::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb {
  background: var(--surface-3);
  border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover { background: var(--border-strong); }
* {
  scrollbar-width: thin;
  scrollbar-color: var(--surface-3) transparent;
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* ------------------------------------------------------------
   COMPONENTS
   ------------------------------------------------------------ */

@layer components {
  /* ---------- buttons ---------- */
  .btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    height: 2.25rem;
    padding: 0 0.875rem;
    border-radius: var(--radius);
    font-family: var(--font-sans);
    font-size: 0.8125rem;
    font-weight: 500;
    line-height: 1;
    border: 1px solid transparent;
    cursor: pointer;
    white-space: nowrap;
    transition: background-color 0.12s ease, border-color 0.12s ease,
      color 0.12s ease, box-shadow 0.12s ease;
  }
  .btn:disabled {
    opacity: 0.45;
    cursor: not-allowed;
    pointer-events: none;
  }
  .btn:active:not(:disabled) { transform: translateY(0.5px); }

  .btn-primary {
    background: var(--accent);
    color: var(--accent-fg);
    font-weight: 600;
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.2), var(--shadow-sm);
  }
  .btn-primary:hover:not(:disabled) {
    background: var(--accent-hover);
  }
  .btn-primary:active:not(:disabled) { background: var(--accent-active); }

  .btn-secondary {
    background: var(--surface);
    color: var(--text-1);
    border-color: var(--border-strong);
    box-shadow: var(--shadow-sm);
  }
  .btn-secondary:hover:not(:disabled) {
    background: var(--surface-2);
    border-color: var(--text-3);
  }

  .btn-ghost {
    background: transparent;
    color: var(--text-2);
  }
  .btn-ghost:hover:not(:disabled) {
    background: var(--surface-2);
    color: var(--text-1);
  }

  .btn-danger {
    background: transparent;
    color: var(--error);
    border-color: rgba(229, 72, 77, 0.35);
  }
  .btn-danger:hover:not(:disabled) {
    background: var(--error-muted);
    border-color: var(--error);
  }

  .btn-sm {
    height: 1.75rem;
    padding: 0 0.625rem;
    font-size: 0.75rem;
    border-radius: var(--radius-sm);
  }
  .btn-lg {
    height: 2.625rem;
    padding: 0 1.25rem;
    font-size: 0.875rem;
  }
  .btn-icon {
    padding: 0;
    width: 2.25rem;
  }
  .btn-icon.btn-sm { width: 1.75rem; }

  /* ---------- inputs ---------- */
  .input, .textarea, .select {
    width: 100%;
    height: 2.25rem;
    background: var(--surface);
    border: 1px solid var(--border-strong);
    border-radius: var(--radius);
    padding: 0 0.75rem;
    font-family: var(--font-sans);
    font-size: 0.8125rem;
    color: var(--text-1);
    transition: border-color 0.12s ease, box-shadow 0.12s ease;
  }
  .input::placeholder, .textarea::placeholder { color: var(--text-3); }
  .input:hover:not(:disabled):not(:focus),
  .textarea:hover:not(:disabled):not(:focus),
  .select:hover:not(:disabled):not(:focus) {
    border-color: var(--text-3);
  }
  .input:focus, .textarea:focus, .select:focus {
    border-color: var(--accent);
    outline: none;
    box-shadow: 0 0 0 3px var(--accent-muted);
  }
  .input:disabled, .textarea:disabled, .select:disabled {
    opacity: 0.55;
    cursor: not-allowed;
  }

  .textarea {
    height: auto;
    min-height: 5rem;
    padding: 0.625rem 0.75rem;
    resize: vertical;
    line-height: 1.55;
  }

  .select {
    cursor: pointer;
    padding-right: 2rem;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24' stroke='%2363636d'%3E%3Cpath stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M19 9l-7 7-7-7'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 0.625rem center;
    background-size: 1rem;
  }

  .label {
    display: block;
    font-size: 0.8125rem;
    font-weight: 500;
    color: var(--text-2);
    margin-bottom: 0.375rem;
  }
  .label-hint {
    font-size: 0.75rem;
    color: var(--text-3);
    margin-top: 0.375rem;
  }

  .input-sm {
    height: 1.875rem;
    padding: 0 0.625rem;
    font-size: 0.75rem;
    border-radius: var(--radius-sm);
  }
  .input-lg { height: 2.625rem; font-size: 0.875rem; }

  .checkbox {
    appearance: none;
    width: 1rem;
    height: 1rem;
    border: 1px solid var(--border-strong);
    border-radius: 4px;
    background: var(--surface);
    cursor: pointer;
    position: relative;
    flex-shrink: 0;
    transition: all 0.12s ease;
  }
  .checkbox:checked {
    background: var(--accent);
    border-color: var(--accent);
  }
  .checkbox:checked::after {
    content: "";
    position: absolute;
    left: 3px;
    top: 0px;
    width: 6px;
    height: 10px;
    border: solid var(--accent-fg);
    border-width: 0 2px 2px 0;
    transform: rotate(45deg) scale(0.8);
  }
  .checkbox:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
  }

  /* ---------- cards & panels ---------- */
  .card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 1.25rem;
  }
  .card-flush { padding: 0; overflow: hidden; }

  .card-header {
    display: flex;
    flex-direction: column;
    gap: 0.125rem;
    margin-bottom: 1rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border);
  }
  .card-header-title {
    font-size: 0.9375rem;
    font-weight: 600;
    color: var(--text-1);
    letter-spacing: -0.01em;
  }
  .card-header-description {
    font-size: 0.8125rem;
    color: var(--text-3);
  }

  .card-interactive {
    cursor: pointer;
    transition: border-color 0.15s ease, background-color 0.15s ease;
  }
  .card-interactive:hover {
    border-color: var(--border-strong);
    background: var(--surface-2);
  }

  /* ---------- metric strip (replaces stat cards) ---------- */
  .metric-strip {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
  }
  @media (min-width: 768px) {
    .metric-strip { grid-template-columns: repeat(4, 1fr); }
  }
  .metric {
    padding: 1rem 1.25rem;
    border-left: 1px solid var(--border);
    min-width: 0;
    transition: background-color 0.12s ease;
  }
  .metric:hover { background: var(--surface); }
  .metric:first-child { border-left: none; padding-left: 0; }
  @media (max-width: 767px) {
    .metric:nth-child(3) { border-left: none; padding-left: 0; }
    .metric:nth-child(n+3) { border-top: 1px solid var(--border); }
  }
  .metric-label {
    display: flex;
    align-items: center;
    gap: 0.375rem;
    font-size: 0.6875rem;
    font-weight: 500;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--text-3);
    white-space: nowrap;
  }
  .metric-label svg { width: 0.8125rem; height: 0.8125rem; }
  .metric-value {
    margin-top: 0.375rem;
    font-family: var(--font-mono);
    font-size: 1.5rem;
    font-weight: 500;
    letter-spacing: -0.02em;
    color: var(--text-1);
    font-variant-numeric: tabular-nums;
    line-height: 1.15;
  }
  .metric-sub {
    margin-top: 0.125rem;
    font-size: 0.6875rem;
    color: var(--text-3);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
  }

  /* ---------- list rows (hairline, not cards) ---------- */
  .row-list {
    border-top: 1px solid var(--border);
  }
  .row-item {
    display: flex;
    align-items: center;
    gap: 0.875rem;
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--border);
    min-width: 0;
  }
  .row-item.clickable { cursor: pointer; }
  .row-item.clickable:hover .row-title { color: var(--accent); }
  .row-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 1.75rem;
    height: 1.75rem;
    flex-shrink: 0;
    color: var(--text-3);
  }
  .row-item.clickable:hover .row-icon { color: var(--accent); }
  .row-main { flex: 1; min-width: 0; }
  .row-title {
    font-size: 0.8125rem;
    font-weight: 500;
    color: var(--text-1);
    transition: color 0.1s ease;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
  }
  .row-sub {
    font-size: 0.75rem;
    color: var(--text-3);
    margin-top: 0.0625rem;
    font-family: var(--font-mono);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
  }
  .row-trailing {
    flex-shrink: 0;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-3);
    font-size: 0.75rem;
    font-family: var(--font-mono);
  }

  /* stat card (kept for StatCard export compat) */
  .stat-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 1rem 1.25rem;
  }
  .stat-label {
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--text-3);
    text-transform: uppercase;
    letter-spacing: 0.05em;
  }
  .stat-value {
    font-size: 1.625rem;
    font-weight: 600;
    color: var(--text-1);
    letter-spacing: -0.02em;
    line-height: 1.2;
    margin-top: 0.25rem;
    font-variant-numeric: tabular-nums;
  }

  /* ---------- badges ---------- */
  .badge {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    height: 1.375rem;
    padding: 0 0.5rem;
    border-radius: var(--radius-sm);
    font-size: 0.6875rem;
    font-weight: 600;
    line-height: 1;
    letter-spacing: 0.02em;
    border: 1px solid transparent;
    white-space: nowrap;
  }
  .badge-primary {
    background: var(--accent-muted);
    color: var(--accent);
    border-color: var(--accent-border);
  }
  .badge-success {
    background: var(--success-muted);
    color: var(--success);
    border-color: rgba(76, 195, 138, 0.25);
  }
  .badge-warning {
    background: var(--warning-muted);
    color: var(--warning);
    border-color: rgba(245, 166, 35, 0.25);
  }
  .badge-error {
    background: var(--error-muted);
    color: var(--error);
    border-color: rgba(229, 72, 77, 0.25);
  }
  .badge-neutral {
    background: var(--surface-2);
    color: var(--text-2);
    border-color: var(--border);
  }
  .badge-dot {
    width: 5px;
    height: 5px;
    border-radius: 50%;
    background: currentColor;
  }

  /* ---------- storage layout ---------- */
  .storage-grid {
    display: grid;
    gap: 1.25rem;
    grid-template-columns: minmax(0, 17rem) minmax(0, 1fr);
  }
  /* below ~1100px the right column gets too tight — the objects table clips */
  @media (max-width: 1100px) {
    .storage-grid { grid-template-columns: 1fr; }
  }

  /* ---------- table ---------- */
  .table-container {
    width: 100%;
    overflow-x: auto;
  }
  .table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.8125rem;
  }
  .table thead th {
    text-align: left;
    font-size: 0.6875rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--text-3);
    padding: 0.5rem 1rem;
    border-bottom: 1px solid var(--border);
    white-space: nowrap;
  }
  .table tbody td {
    padding: 0.6875rem 1rem;
    border-bottom: 1px solid var(--border);
    color: var(--text-2);
    vertical-align: middle;
  }
  .table tbody tr:last-child td { border-bottom: none; }
  .table tbody tr {
    transition: background-color 0.1s ease;
  }
  .table tbody tr:hover { background: var(--surface-2); }
  .table tbody tr.clickable { cursor: pointer; }
  .table .mono, .mono { font-family: var(--font-mono); font-variant-numeric: tabular-nums; }

  /* ---------- messages / alerts ---------- */
  .message {
    display: flex;
    gap: 0.75rem;
    padding: 0.75rem 1rem;
    border-radius: var(--radius);
    font-size: 0.8125rem;
    border: 1px solid;
  }
  .message-neutral {
    background: var(--surface-2);
    border-color: var(--border);
    color: var(--text-2);
  }
  .message-info {
    background: var(--info-muted);
    border-color: rgba(112, 184, 255, 0.25);
    color: var(--info);
  }
  .message-success {
    background: var(--success-muted);
    border-color: rgba(76, 195, 138, 0.25);
    color: var(--success);
  }
  .message-warning {
    background: var(--warning-muted);
    border-color: rgba(245, 166, 35, 0.25);
    color: var(--warning);
  }
  .message-error {
    background: var(--error-muted);
    border-color: rgba(229, 72, 77, 0.25);
    color: var(--error);
  }

  /* ---------- kbd ---------- */
  .kbd {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 1.25rem;
    height: 1.25rem;
    padding: 0 0.3rem;
    border-radius: 4px;
    background: var(--surface-2);
    border: 1px solid var(--border-strong);
    border-bottom-width: 2px;
    font-family: var(--font-mono);
    font-size: 0.625rem;
    font-weight: 500;
    color: var(--text-2);
  }

  /* ---------- spinner / skeleton ---------- */
  .spinner {
    display: inline-block;
    width: 1rem;
    height: 1rem;
    border: 2px solid var(--border-strong);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin 0.7s linear infinite;
  }
  .btn .spinner {
    width: 0.875rem;
    height: 0.875rem;
    border-color: rgba(255, 255, 255, 0.3);
    border-top-color: currentColor;
  }
  .skeleton {
    background: var(--surface-2);
    position: relative;
    overflow: hidden;
  }
  .skeleton::after {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.04), transparent);
    animation: shimmer 1.6s infinite;
  }

  /* ---------- avatar ---------- */
  .avatar {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: var(--surface-3);
    color: var(--text-1);
    font-weight: 600;
    flex-shrink: 0;
    border: 1px solid var(--border-strong);
  }

  /* ---------- app shell ---------- */
  .shell {
    display: flex;
    height: 100vh;
    overflow: hidden;
    background: var(--bg);
  }

  .sidebar {
    width: 15.5rem;
    flex-shrink: 0;
    display: flex;
    flex-direction: column;
    background: var(--bg-panel);
    border-right: 1px solid var(--border);
  }

  .sidebar-brand {
    display: flex;
    align-items: center;
    gap: 0.625rem;
    height: 3.5rem;
    padding: 0 1rem;
    border-bottom: 1px solid var(--border);
  }
  .brand-mark {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 1.625rem;
    height: 1.625rem;
    color: var(--accent);
    flex-shrink: 0;
  }
  .brand-name {
    font-weight: 600;
    font-size: 0.9375rem;
    color: var(--text-1);
    letter-spacing: -0.02em;
  }
  .brand-tag {
    margin-left: auto;
    font-size: 0.625rem;
    font-weight: 500;
    font-family: var(--font-mono);
    color: var(--text-3);
    letter-spacing: 0.04em;
  }

  .sidebar-context {
    padding: 0.75rem;
    border-bottom: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    gap: 0.375rem;
  }

  .context-select {
    position: relative;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    width: 100%;
    padding: 0.4rem 0.5rem;
    border-radius: var(--radius-sm);
    border: 1px solid transparent;
    background: transparent;
    color: var(--text-2);
    font-size: 0.8125rem;
    cursor: pointer;
    transition: all 0.12s ease;
    text-align: left;
  }
  .context-select:hover {
    background: var(--surface-2);
    color: var(--text-1);
  }
  .context-select .ctx-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 1.375rem;
    height: 1.375rem;
    border-radius: 5px;
    background: var(--surface-3);
    color: var(--text-2);
    font-size: 0.625rem;
    font-weight: 700;
    flex-shrink: 0;
  }
  .context-select .ctx-label {
    flex: 1;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    font-weight: 500;
    color: var(--text-1);
  }
  .context-select select {
    position: absolute;
    inset: 0;
    opacity: 0;
    cursor: pointer;
    width: 100%;
  }

  .sidebar-nav {
    flex: 1;
    overflow-y: auto;
    padding: 0.75rem;
    display: flex;
    flex-direction: column;
    gap: 0.125rem;
  }
  .nav-section {
    padding: 0.75rem 0.5rem 0.375rem;
    font-size: 0.625rem;
    font-weight: 500;
    font-family: var(--font-mono);
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--text-3);
  }
  .nav-item {
    display: flex;
    align-items: center;
    gap: 0.625rem;
    width: 100%;
    padding: 0.45rem 0.5rem;
    border-radius: var(--radius-sm);
    border: none;
    background: transparent;
    color: var(--text-2);
    font-family: var(--font-sans);
    font-size: 0.8125rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.1s ease;
    text-align: left;
    position: relative;
  }
  .nav-item svg { flex-shrink: 0; color: var(--text-2); transition: color 0.1s ease; }
  .nav-item:hover {
    background: var(--surface-2);
    color: var(--text-1);
  }
  .nav-item:hover svg { color: var(--text-1); }
  .nav-item.active {
    background: var(--surface-2);
    color: var(--text-1);
  }
  .nav-item.active::before {
    content: "";
    position: absolute;
    left: -0.75rem;
    top: 50%;
    transform: translateY(-50%);
    width: 2px;
    height: 1rem;
    border-radius: 0 2px 2px 0;
    background: var(--accent);
  }
  .nav-item.active svg { color: var(--accent); }
  .nav-item .nav-badge {
    margin-left: auto;
    font-size: 0.625rem;
    font-weight: 600;
    background: var(--surface-3);
    color: var(--text-2);
    padding: 0.1rem 0.4rem;
    border-radius: 999px;
  }

  .sidebar-footer {
    padding: 0.75rem;
    border-top: 1px solid var(--border);
  }
  .user-card {
    display: flex;
    align-items: center;
    gap: 0.625rem;
    padding: 0.5rem;
    border-radius: var(--radius);
    width: 100%;
    border: none;
    background: transparent;
    cursor: pointer;
    transition: background-color 0.12s ease;
    text-align: left;
  }
  .user-card:hover { background: var(--surface-2); }
  .user-card .user-name {
    font-size: 0.8125rem;
    font-weight: 500;
    color: var(--text-1);
    line-height: 1.2;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
  }
  .user-card .user-email {
    font-size: 0.6875rem;
    color: var(--text-3);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
  }

  /* ---------- topbar ---------- */
  .main-col {
    flex: 1;
    display: flex;
    flex-direction: column;
    min-width: 0;
  }
  .topbar {
    display: flex;
    align-items: center;
    gap: 1rem;
    height: 3.5rem;
    padding: 0 1.5rem;
    border-bottom: 1px solid var(--border);
    background: var(--bg);
    flex-shrink: 0;
  }
  .topbar-breadcrumb {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.8125rem;
    min-width: 0;
  }
  .crumb {
    color: var(--text-3);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
  }
  .crumb.current { color: var(--text-1); font-weight: 500; }
  .crumb-sep { color: var(--border-strong); }

  .topbar-search {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    height: 2rem;
    padding: 0 0.625rem;
    border-radius: var(--radius);
    border: 1px solid var(--border-strong);
    background: var(--surface);
    color: var(--text-3);
    font-family: var(--font-sans);
    font-size: 0.75rem;
    cursor: pointer;
    transition: all 0.12s ease;
    min-width: 11rem;
  }
  .topbar-search:hover {
    border-color: var(--text-3);
    color: var(--text-2);
  }
  .topbar-search .kbd { margin-left: auto; }

  .health-pill {
    display: flex;
    align-items: center;
    gap: 0.375rem;
    height: 1.625rem;
    padding: 0 0.625rem;
    border-radius: 999px;
    border: 1px solid var(--border);
    background: var(--surface);
    font-size: 0.6875rem;
    font-weight: 500;
    color: var(--text-2);
    white-space: nowrap;
  }
  .health-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    flex-shrink: 0;
  }
  .health-dot.ok { background: var(--success); }
  .health-dot.warn { background: var(--warning); }
  .health-dot.err { background: var(--error); }

  .demo-pill {
    display: flex;
    align-items: center;
    gap: 0.375rem;
    height: 1.625rem;
    padding: 0 0.625rem;
    border-radius: 999px;
    border: 1px solid var(--accent-border);
    background: var(--accent-muted);
    font-family: var(--font-sans);
    font-size: 0.6875rem;
    font-weight: 600;
    color: var(--accent);
    cursor: pointer;
    white-space: nowrap;
    transition: all 0.12s ease;
  }
  .demo-pill:hover { border-color: var(--accent); }

  .icon-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 2rem;
    height: 2rem;
    border-radius: var(--radius);
    border: none;
    background: transparent;
    color: var(--text-3);
    cursor: pointer;
    transition: all 0.12s ease;
    flex-shrink: 0;
  }
  .icon-btn:hover {
    background: var(--surface-2);
    color: var(--text-1);
  }

  .main-content {
    flex: 1;
    overflow-y: auto;
    padding: 1.5rem;
  }
  @media (min-width: 1024px) {
    .main-content { padding: 2rem; }
  }

  .sidebar-backdrop {
    display: none;
  }

  .bottom-nav {
    display: none;
  }

  /* ---------- page scaffold ---------- */
  .page {
    max-width: 72rem;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
  }
  .page-wide { max-width: 88rem; }
  .page-header {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 1rem;
    flex-wrap: wrap;
  }
  .page-title {
    font-size: 1.5rem;
    font-weight: 600;
    letter-spacing: -0.03em;
    color: var(--text-1);
    line-height: 1.15;
  }
  .page-sub {
    margin-top: 0.375rem;
    font-size: 0.8125rem;
    color: var(--text-3);
  }
  .page-sub code { font-size: 0.75rem; }
  .page-description {
    margin-top: 0.375rem;
    font-size: 0.8125rem;
    color: var(--text-3);
  }
  .page-description code { font-size: 0.75rem; }
  .page-actions {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    flex-shrink: 0;
  }
  .divider {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 0.75rem;
    color: var(--text-3);
  }
  .divider::before,
  .divider::after {
    content: "";
    flex: 1;
    height: 1px;
    background: var(--border);
  }
  .section-title {
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--text-1);
    letter-spacing: -0.01em;
  }

  /* ---------- empty state ---------- */
  .empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 3rem 1.5rem;
    gap: 0.375rem;
  }
  .empty-state-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 2.5rem;
    height: 2.5rem;
    border-radius: var(--radius);
    background: var(--surface-2);
    border: 1px solid var(--border);
    color: var(--text-3);
    margin-bottom: 0.5rem;
  }
  .empty-state-title {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-1);
  }
  .empty-state-description {
    font-size: 0.8125rem;
    color: var(--text-3);
    max-width: 22rem;
  }

  /* ---------- page tabs ---------- */
  .tabs {
    display: flex;
    gap: 1.25rem;
    border-bottom: 1px solid var(--border);
  }
  .tab {
    display: flex;
    align-items: center;
    gap: 0.375rem;
    padding: 0.375rem 0.125rem 0.625rem;
    margin-bottom: -1px;
    border: none;
    border-bottom: 2px solid transparent;
    background: transparent;
    color: var(--text-3);
    font-family: var(--font-sans);
    font-size: 0.8125rem;
    font-weight: 500;
    cursor: pointer;
    transition: color 0.1s ease, border-color 0.1s ease;
  }
  .tab:hover:not(:disabled) { color: var(--text-1); }
  .tab.active {
    color: var(--text-1);
    border-bottom-color: var(--accent);
  }
  .tab:disabled { opacity: 0.4; cursor: default; }
  .tab .nav-badge { margin-left: 0.25rem; }

  /* ---------- segmented tabs (login) ---------- */
  .seg {
    display: flex;
    padding: 3px;
    border-radius: var(--radius);
    background: var(--surface-2);
    border: 1px solid var(--border);
    gap: 3px;
  }
  .seg-item {
    flex: 1;
    height: 1.875rem;
    border-radius: var(--radius-sm);
    border: none;
    background: transparent;
    color: var(--text-3);
    font-family: var(--font-sans);
    font-size: 0.8125rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.12s ease;
  }
  .seg-item:hover { color: var(--text-1); }
  .seg-item.active {
    background: var(--surface);
    color: var(--text-1);
    box-shadow: var(--shadow-sm);
  }

  /* ---------- auth layout ---------- */
  .auth-wrap {
    display: flex;
    min-height: 100vh;
  }
  .auth-brand {
    display: none;
    flex: 1;
    flex-direction: column;
    justify-content: space-between;
    padding: 2.5rem;
    border-right: 1px solid var(--border);
    background: var(--bg-panel);
    position: relative;
    overflow: hidden;
  }
  @media (min-width: 900px) {
    .auth-brand { display: flex; }
  }
  .auth-brand-grid {
    position: absolute;
    inset: 0;
    background-image:
      linear-gradient(var(--border-strong) 1px, transparent 1px),
      linear-gradient(90deg, var(--border-strong) 1px, transparent 1px);
    background-size: 48px 48px;
    opacity: 0.35;
    mask-image: radial-gradient(ellipse at 25% 45%, black, transparent 70%);
    -webkit-mask-image: radial-gradient(ellipse at 25% 45%, black, transparent 70%);
  }
  .auth-brand-inner { position: relative; z-index: 1; }
  .auth-tagline {
    font-size: 1.75rem;
    font-weight: 600;
    letter-spacing: -0.03em;
    line-height: 1.2;
    color: var(--text-1);
    max-width: 20rem;
  }
  .auth-points {
    position: relative;
    z-index: 1;
    display: flex;
    flex-direction: column;
    gap: 0.875rem;
  }
  .auth-point {
    display: flex;
    align-items: baseline;
    gap: 0.625rem;
    font-size: 0.8125rem;
    color: var(--text-2);
  }
  .auth-point::before {
    content: "";
    width: 5px;
    height: 5px;
    border-radius: 1px;
    background: var(--accent);
    flex-shrink: 0;
    transform: translateY(-2px);
  }
  .auth-panel {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    flex: 1;
    padding: 2rem 1.25rem;
    min-width: 0;
  }
  @media (min-width: 900px) {
    .auth-panel { flex: 0 0 32rem; }
  }
  .auth-card {
    width: 100%;
    max-width: 22rem;
  }

  /* ---------- animations ---------- */
  @keyframes spin {
    to { transform: rotate(360deg); }
  }
  @keyframes shimmer {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(100%); }
  }
  @keyframes fade-in {
    from { opacity: 0; }
    to { opacity: 1; }
  }
  @keyframes slide-up {
    from { opacity: 0; transform: translateY(8px); }
    to { opacity: 1; transform: translateY(0); }
  }
  @keyframes scale-in {
    from { opacity: 0; transform: scale(0.97) translateY(4px); }
    to { opacity: 1; transform: scale(1) translateY(0); }
  }
  .animate-slide-up { animation: slide-up 0.2s ease-out; }
  .animate-fade-in { animation: fade-in 0.15s ease-out; }
  .animate-scale-in { animation: scale-in 0.15s ease-out; }
}

/* ------------------------------------------------------------
   RESPONSIVE SHELL
   ------------------------------------------------------------ */

@media (max-width: 1023px) {
  .sidebar {
    position: fixed;
    left: 0;
    top: 0;
    bottom: 0;
    z-index: 40;
    transform: translateX(-100%);
    transition: transform 0.2s ease;
  }
  .sidebar.open { transform: translateX(0); }
  .sidebar-backdrop {
    display: block;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.55);
    z-index: 30;
    animation: fade-in 0.15s ease-out;
  }

  .bottom-nav {
    display: flex;
    flex-shrink: 0;
    border-top: 1px solid var(--border);
    background: var(--bg-panel);
    padding-bottom: env(safe-area-inset-bottom);
  }
  .bottom-nav-item {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 0.1875rem;
    min-height: 3.25rem;
    padding: 0.375rem 0.25rem;
    border: none;
    background: transparent;
    color: var(--text-3);
    font-family: var(--font-sans);
    font-size: 0.625rem;
    font-weight: 500;
    cursor: pointer;
    position: relative;
    transition: color 0.1s ease;
    -webkit-tap-highlight-color: transparent;
  }
  .bottom-nav-item:active { color: var(--text-1); }
  .bottom-nav-item.active { color: var(--accent); }
  .bottom-nav-item.active::before {
    content: "";
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 1.5rem;
    height: 2px;
    border-radius: 0 0 2px 2px;
    background: var(--accent);
  }
  .bottom-nav-item svg { color: inherit; }
}