/* SIRF — Angular Material 3 retheme
 * Anchored to the City of Buffalo navy brand, applied as an M3 primary tonal palette.
 * Mimics @angular/material 17+ MDC components (mat-button, mat-form-field appearance="outline",
 * mat-card, mat-table, mat-tabs, mat-chip, mat-checkbox, mat-dialog, mat-snack-bar).
 */

/* Roboto + Material Symbols are imported in the HTML <head> */

:root {
  /* ── M3 tonal palette ── */
  /* Primary (navy brand mapped to MD3 tones) */
  --m3-primary: #2a3273;
  --m3-on-primary: #ffffff;
  --m3-primary-container: #dde1f5;
  --m3-on-primary-container: #1c2256;
  --m3-primary-fixed: #dde1f5;
  --m3-primary-fixed-dim: #b8bee0;

  /* Secondary (yellow brand → tertiary in MD3) */
  --m3-secondary: #5b5d72;
  --m3-on-secondary: #ffffff;
  --m3-secondary-container: #e0e1f9;
  --m3-on-secondary-container: #181a2c;

  --m3-tertiary: #ffb600;
  --m3-on-tertiary: #1c2256;
  --m3-tertiary-container: #fff7e0;
  --m3-on-tertiary-container: #4a3700;

  --m3-error: #ba1a1a;
  --m3-on-error: #ffffff;
  --m3-error-container: #ffdad6;
  --m3-on-error-container: #410002;

  /* Neutral surfaces */
  --m3-surface: #fcfbff;
  --m3-surface-dim: #ddd9e1;
  --m3-surface-bright: #fcfbff;
  --m3-surface-container-lowest: #ffffff;
  --m3-surface-container-low: #f6f3fa;
  --m3-surface-container: #f0eef4;
  --m3-surface-container-high: #eae7ee;
  --m3-surface-container-highest: #e4e2e9;
  --m3-on-surface: #1b1b21;
  --m3-on-surface-variant: #46474f;
  --m3-outline: #767680;
  --m3-outline-variant: #c6c6d0;
  --m3-inverse-surface: #303036;
  --m3-inverse-on-surface: #f3f0f7;
  --m3-inverse-primary: #b8bee0;

  /* M3 elevation (5 levels) — a faint umbra+penumbra; mimics matElevation */
  --m3-elev-0: none;
  --m3-elev-1: 0 1px 2px 0 rgba(0,0,0,.30), 0 1px 3px 1px rgba(0,0,0,.15);
  --m3-elev-2: 0 1px 2px 0 rgba(0,0,0,.30), 0 2px 6px 2px rgba(0,0,0,.15);
  --m3-elev-3: 0 1px 3px 0 rgba(0,0,0,.30), 0 4px 8px 3px rgba(0,0,0,.15);
  --m3-elev-4: 0 2px 3px 0 rgba(0,0,0,.30), 0 6px 10px 4px rgba(0,0,0,.15);
  --m3-elev-5: 0 4px 4px 0 rgba(0,0,0,.30), 0 8px 12px 6px rgba(0,0,0,.15);

  /* MD3 shape scale */
  --shape-xs: 4px;
  --shape-sm: 8px;
  --shape-md: 12px;
  --shape-lg: 16px;
  --shape-xl: 28px;
  --shape-full: 9999px;

  /* Aliases used across older selectors so the existing markup keeps working */
  --navy: var(--m3-primary);
  --navy-900: var(--m3-on-primary-container);
  --navy-700: #3a4395;
  --navy-50: var(--m3-primary-container);
  --navy-100: #c5cbeb;
  --sky: #6FCFEB;
  --sky-50: #eaf7fc;
  --sky-100: #d3eef8;
  --sky-600: #3aa9cc;
  --yellow: var(--m3-tertiary);
  --yellow-50: var(--m3-tertiary-container);
  --yellow-600: #d99a00;

  --ink: var(--m3-on-surface);
  --ink-2: var(--m3-on-surface-variant);
  --ink-3: #6a6f80;
  --ink-4: #9aa0b0;
  --line: var(--m3-outline-variant);
  --line-2: #eef0f6;
  --bg: var(--m3-surface-container-low);
  --surface: var(--m3-surface-container-lowest);

  --danger: var(--m3-error);
  --danger-50: var(--m3-error-container);
  --success: #2e7d32;
  --success-50: #e6f4ea;
  --warn: #b26a00;

  --radius: var(--shape-md);
  --radius-sm: var(--shape-sm);
  --radius-lg: var(--shape-lg);
  --shadow-1: var(--m3-elev-1);
  --shadow-2: var(--m3-elev-2);
  --shadow-3: var(--m3-elev-4);

  --rail-w: 80px;
  --rail-w-expanded: 256px;
  --header-h: 64px;

  --row-h: 52px;
  --pad-y: 12px;
  --pad-x: 16px;

  --font: "Roboto", "Helvetica Neue", Arial, sans-serif;
  --font-display: "Roboto", "Helvetica Neue", Arial, sans-serif;

  /* MD3 motion easings */
  --ease-emphasized: cubic-bezier(.2, 0, 0, 1);
  --ease-standard: cubic-bezier(.2, 0, 0, 1);
  --ease-decel: cubic-bezier(0, 0, 0, 1);

  /* Material state-layer opacities */
  --state-hover: .08;
  --state-focus: .12;
  --state-pressed: .12;
  --state-dragged: .16;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: var(--font);
  color: var(--ink);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  font-weight: 400;
  font-size: 14px;
  letter-spacing: .0107em; /* MD3 body-medium tracking */
}

/* ── Material density (per spec, density -2 = -8px row, -1 = -4px) ── */
body[data-density="compact"]      { --row-h: 44px; --pad-y: 8px;  --pad-x: 12px; }
body[data-density="comfy"]        { --row-h: 52px; --pad-y: 12px; --pad-x: 16px; }
body[data-density="comfortable"]  { --row-h: 48px; --pad-y: 10px; --pad-x: 14px; }

button { font-family: inherit; }
a { color: inherit; }

/* ── Material Symbols ── */
.material-symbols-outlined {
  font-family: 'Material Symbols Outlined';
  font-weight: normal;
  font-style: normal;
  display: inline-block;
  line-height: 1;
  text-transform: none;
  letter-spacing: normal;
  word-wrap: normal;
  white-space: nowrap;
  direction: ltr;
  font-feature-settings: 'liga';
  -webkit-font-feature-settings: 'liga';
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  vertical-align: middle;
  user-select: none;
}

/* ── App shell (mat-sidenav-container) ───────────────────── */
.app {
  min-height: 100vh;
  display: grid;
  grid-template-columns: var(--rail-w) 1fr;
  grid-template-rows: var(--header-h) 1fr;
  grid-template-areas:
    "sidebar header"
    "sidebar main";
  transition: grid-template-columns .25s var(--ease-emphasized);
  background: var(--m3-surface-container-low);
}
.app[data-rail="expanded"] { grid-template-columns: var(--rail-w-expanded) 1fr; }

/* ── Header (mat-toolbar primary) ── */
.header {
  grid-area: header;
  background: var(--m3-primary);
  color: var(--m3-on-primary);
  display: flex;
  align-items: center;
  padding: 0 16px;
  gap: 16px;
  border-bottom: none;
  position: sticky;
  top: 0;
  z-index: 20;
  box-shadow: var(--m3-elev-2);
}
.header .brand {
  display: flex; align-items: center; gap: 12px;
  font-weight: 500; font-size: 20px; letter-spacing: 0;
}
.header .brand-mark {
  width: 40px; height: 40px; border-radius: var(--shape-sm);
  background: #fff;
  display: grid; place-items: center;
  color: var(--navy-900); font-weight: 700; font-size: 13px;
  overflow: hidden;
}
.header .brand-title { font-weight: 500; font-size: 16px; line-height: 1.2; }
.header .brand-sub {
  opacity: .8; font-size: 11px; font-weight: 400; letter-spacing: .083em;
  text-transform: uppercase;
}
.header .crumbs {
  display: flex; align-items: center; gap: 8px;
  margin-left: 8px; font-size: 14px; color: rgba(255,255,255,.78);
  font-weight: 400;
}
.header .crumbs .sep { opacity: .45; }
.header .crumbs .active { color: #fff; font-weight: 500; }
.header .spacer { flex: 1; }

/* mat-icon-button (toolbar variant) */
.header .hbtn {
  height: 40px; padding: 0 16px;
  background: transparent; color: #fff;
  border: 0; border-radius: var(--shape-full);
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 14px; font-weight: 500; letter-spacing: .089em; text-transform: none;
  cursor: default; font-family: inherit;
  position: relative; overflow: hidden;
  transition: background .15s var(--ease-standard);
}
.header .hbtn::before {
  content: ""; position: absolute; inset: 0; background: currentColor; opacity: 0;
  transition: opacity .15s; pointer-events: none; border-radius: inherit;
}
.header .hbtn:hover::before { opacity: var(--state-hover); }
.header .hbtn:active::before { opacity: var(--state-pressed); }
.header .hbtn.icon-only {
  width: 40px; padding: 0; justify-content: center; border-radius: 50%;
}
.header .hbtn.primary {
  background: var(--m3-tertiary); color: var(--m3-on-tertiary);
  font-weight: 500;
}
.header .user {
  display: flex; align-items: center; gap: 12px;
  padding: 4px 12px 4px 4px;
  border-radius: var(--shape-full);
  font-size: 14px;
  cursor: default;
  position: relative;
}
.header .user::before {
  content: ""; position: absolute; inset: 0; background: currentColor; opacity: 0;
  border-radius: inherit; transition: opacity .15s;
}
.header .user:hover::before { opacity: var(--state-hover); }
.header .user .av {
  width: 32px; height: 32px; border-radius: 50%;
  background: var(--m3-tertiary); color: var(--m3-on-tertiary);
  display: grid; place-items: center; font-weight: 500; font-size: 13px;
  letter-spacing: 0;
}

/* ── Sidebar (mat-sidenav + mat-nav-list) ── */
.sidebar {
  grid-area: sidebar;
  background: var(--m3-surface-container-low);
  color: var(--m3-on-surface-variant);
  padding: 8px 0;
  overflow-y: auto;
  overflow-x: hidden;
  border-right: 1px solid var(--m3-outline-variant);
  position: sticky; top: 0; height: 100vh;
}
.sidebar .logo {
  display: flex; align-items: center; gap: 12px;
  height: calc(var(--header-h) - 8px);
  padding: 0 16px;
  margin-bottom: 8px;
}
.sidebar .logo-mark {
  width: 40px; height: 40px; min-width: 40px;
  border-radius: var(--shape-sm);
  background: var(--m3-primary);
  color: var(--m3-on-primary);
  display: grid; place-items: center;
  font-weight: 700; font-size: 14px;
  overflow: hidden;
}
.sidebar .logo-text {
  display: none; font-weight: 500; color: var(--m3-on-surface);
  white-space: nowrap; font-size: 18px; letter-spacing: 0;
}
.app[data-rail="expanded"] .sidebar .logo-text { display: block; }

.nav-group { padding: 8px 0; border-top: 1px solid var(--m3-outline-variant); }
.nav-group:first-of-type { border-top: 0; }
.nav-label {
  display: none;
  padding: 12px 28px 8px;
  font-size: 11px; letter-spacing: .083em; text-transform: uppercase;
  color: var(--m3-on-surface-variant); font-weight: 500;
}
.app[data-rail="expanded"] .nav-label { display: block; }

/* mat-list-item with state layer */
.nav-item {
  display: flex; align-items: center; gap: 12px;
  padding: 0 16px;
  height: 56px;
  margin: 4px 12px;
  border-radius: var(--shape-full);
  color: var(--m3-on-surface-variant);
  font-size: 14px; font-weight: 500; letter-spacing: 0;
  cursor: default;
  white-space: nowrap;
  position: relative; overflow: hidden;
  transition: background .15s var(--ease-standard), color .15s;
}
.nav-item::before {
  content: ""; position: absolute; inset: 0; background: currentColor; opacity: 0;
  transition: opacity .15s; border-radius: inherit; pointer-events: none;
}
.nav-item:hover::before { opacity: var(--state-hover); }
.nav-item:active::before { opacity: var(--state-pressed); }
.nav-item.active {
  background: var(--m3-secondary-container);
  color: var(--m3-on-secondary-container);
}
.app[data-rail="collapsed"] .nav-item {
  justify-content: center; padding: 0;
  margin: 4px auto; width: 56px;
}
.nav-item .ico {
  width: 24px; height: 24px; min-width: 24px;
  display: grid; place-items: center;
  color: inherit;
}
.nav-item.active .ico { color: var(--m3-on-secondary-container); }
.nav-item .lbl { display: none; }
.app[data-rail="expanded"] .nav-item .lbl { display: block; }
.nav-item .badge {
  margin-left: auto; display: none;
  background: var(--m3-error); color: var(--m3-on-error);
  font-size: 11px; font-weight: 500;
  padding: 2px 8px; border-radius: var(--shape-full);
  min-width: 20px; text-align: center;
}
.app[data-rail="expanded"] .nav-item .badge { display: inline-block; }

/* tooltip (mat-tooltip) */
.nav-item .tip {
  position: absolute; left: calc(100% + 12px); top: 50%; transform: translateY(-50%);
  background: var(--m3-inverse-surface); color: var(--m3-inverse-on-surface);
  padding: 6px 10px;
  border-radius: var(--shape-xs); font-size: 12px; white-space: nowrap;
  opacity: 0; pointer-events: none; transition: opacity .15s var(--ease-standard);
  z-index: 100;
  font-weight: 500; letter-spacing: 0;
}
.app[data-rail="collapsed"] .nav-item:hover .tip { opacity: 1; }

/* ── Main ── */
.main {
  grid-area: main;
  padding: 24px 28px 40px;
  overflow: hidden;
  background: var(--m3-surface-container-low);
}

/* page header */
.page-h {
  display: flex; align-items: flex-end; gap: 16px; margin-bottom: 20px;
}
.page-h h1 {
  margin: 0; font-size: 28px; font-weight: 400; letter-spacing: 0; line-height: 1.25;
  color: var(--m3-on-surface);
}
.page-h .sub {
  color: var(--m3-on-surface-variant); font-size: 14px; margin-top: 4px;
  font-weight: 400; letter-spacing: .0178em;
}
.page-h .actions { margin-left: auto; display: flex; gap: 8px; }

/* ════════════════════════════════════════════════
   mat-button family
   - .btn          -> mat-button (text)
   - .btn.primary  -> mat-flat-button (filled)
   - .btn.accent   -> mat-fab/extended-fab feel
   - .btn.danger   -> tonal error
   - .btn.ghost    -> mat-button (no border)
   .stroked variant gets an outline.
   All buttons get a state layer + ripple via JS.
   ════════════════════════════════════════════════ */
.btn {
  height: 40px; padding: 0 24px;
  background: transparent; color: var(--m3-primary);
  border: 0; border-radius: var(--shape-full);
  font-size: 14px; font-weight: 500; letter-spacing: .089em;
  font-family: inherit;
  display: inline-flex; align-items: center; gap: 8px;
  cursor: default;
  position: relative; overflow: hidden;
  transition: background .15s var(--ease-standard), box-shadow .2s, transform .06s;
  white-space: nowrap;
}
.btn::before {
  content: ""; position: absolute; inset: 0; background: currentColor; opacity: 0;
  transition: opacity .15s; pointer-events: none; border-radius: inherit;
}
.btn:hover::before { opacity: var(--state-hover); }
.btn:focus-visible::before { opacity: var(--state-focus); }
.btn:active::before { opacity: var(--state-pressed); }
.btn:focus-visible { outline: none; }

.btn.stroked {
  border: 1px solid var(--m3-outline);
  color: var(--m3-primary);
}
.btn.primary {
  background: var(--m3-primary); color: var(--m3-on-primary);
  box-shadow: var(--m3-elev-0);
}
.btn.primary:hover { box-shadow: var(--m3-elev-1); }
.btn.raised {
  background: var(--surface); color: var(--m3-primary);
  box-shadow: var(--m3-elev-1);
}
.btn.raised:hover { box-shadow: var(--m3-elev-2); }

.btn.accent {
  background: var(--m3-tertiary); color: var(--m3-on-tertiary);
  font-weight: 500;
}
.btn.tonal {
  background: var(--m3-secondary-container); color: var(--m3-on-secondary-container);
}
.btn.danger {
  background: transparent; color: var(--m3-error); border: 1px solid var(--m3-error);
}
.btn.danger.primary {
  background: var(--m3-error); color: var(--m3-on-error); border: 0;
}
.btn.ghost { background: transparent; border: 0; }

.btn.lg { height: 48px; padding: 0 28px; font-size: 15px; }
.btn.xl { height: 56px; padding: 0 32px; font-size: 16px; border-radius: var(--shape-full); font-weight: 500; }
.btn.sm { height: 32px; padding: 0 16px; font-size: 13px; }
.btn.icon-only {
  width: 40px; padding: 0; justify-content: center; border-radius: 50%;
}
.btn.sm.icon-only { width: 32px; height: 32px; }
.btn:disabled {
  background: rgba(31, 31, 31, .12) !important;
  color: rgba(31, 31, 31, .38) !important;
  pointer-events: none; box-shadow: none !important;
}

/* mat-fab */
.fab {
  width: 56px; height: 56px; border-radius: var(--shape-lg);
  background: var(--m3-primary-container); color: var(--m3-on-primary-container);
  border: 0; display: grid; place-items: center;
  box-shadow: var(--m3-elev-3);
  cursor: default; position: relative; overflow: hidden;
  transition: box-shadow .2s, background .15s;
}
.fab:hover { box-shadow: var(--m3-elev-4); }
.fab::before {
  content: ""; position: absolute; inset: 0; background: currentColor; opacity: 0;
  transition: opacity .15s; pointer-events: none; border-radius: inherit;
}
.fab:hover::before { opacity: var(--state-hover); }
.fab:active::before { opacity: var(--state-pressed); }
.fab.extended {
  width: auto; height: 56px; padding: 0 16px 0 16px; border-radius: var(--shape-lg);
  display: inline-flex; gap: 12px; align-items: center;
  font-size: 14px; font-weight: 500; letter-spacing: .089em; font-family: inherit;
}

/* Ripple */
.mat-ripple {
  position: absolute; border-radius: 50%; transform: scale(0); pointer-events: none;
  background: currentColor; opacity: .25;
  animation: matRipple .55s var(--ease-emphasized) forwards;
}
@keyframes matRipple {
  to { transform: scale(4); opacity: 0; }
}

/* ════════════════════════════════════════════════
   mat-form-field (appearance="outline")
   ════════════════════════════════════════════════ */
.field {
  display: flex; flex-direction: column; gap: 4px;
  position: relative;
}
.field label {
  font-size: 12px; font-weight: 400; color: var(--m3-on-surface-variant);
  letter-spacing: .033em;
  padding-left: 6px;
}
.field .hint, .field .err {
  font-size: 12px; padding-left: 16px;
  color: var(--m3-on-surface-variant); letter-spacing: .033em;
}
.field .err { color: var(--m3-error); }

/* The actual input — drawn as a "filled" outline notch via border-radius + custom border */
.input, .select, .textarea {
  height: 56px; padding: 0 16px;
  border: 1px solid var(--m3-outline);
  border-radius: var(--shape-xs);
  background: transparent; color: var(--m3-on-surface);
  font-family: inherit; font-size: 16px; outline: none;
  letter-spacing: .031em;
  transition: border-color .15s var(--ease-standard), border-width .15s, box-shadow .15s;
}
.textarea { height: auto; min-height: 80px; padding: 14px 16px; resize: vertical; }
.input:hover, .select:hover, .textarea:hover { border-color: var(--m3-on-surface); }
.input:focus, .select:focus, .textarea:focus {
  border-color: var(--m3-primary);
  border-width: 2px;
  padding: 0 15px; /* compensate for thicker border to keep glyphs put */
}
.textarea:focus { padding: 13px 15px; }
.input[aria-invalid="true"] { border-color: var(--m3-error); }
.input[aria-invalid="true"]:focus { border-color: var(--m3-error); }
.input::placeholder { color: var(--m3-on-surface-variant); opacity: 1; }

.select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 24 24' fill='%2346474f'%3E%3Cpath d='M7 10l5 5 5-5z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  padding-right: 44px;
}

.input-group { position: relative; }
.input-group .ic {
  position: absolute; left: 16px; top: 50%; transform: translateY(-50%);
  color: var(--m3-on-surface-variant); pointer-events: none;
  display: grid; place-items: center;
}
.input-group .input { padding-left: 48px; }
.input-group .input:focus { padding-left: 47px; }

/* Smaller variant for table toolbars */
.input.dense, .select.dense {
  height: 40px; font-size: 14px;
  border-radius: var(--shape-xs); padding: 0 12px;
}
.input.dense:focus, .select.dense:focus { padding: 0 11px; }

/* ════════════════════════════════════════════════
   mat-chip
   ════════════════════════════════════════════════ */
.chip {
  display: inline-flex; align-items: center; gap: 8px;
  height: 32px; padding: 0 12px;
  border-radius: var(--shape-sm);
  background: var(--m3-surface-container-high);
  color: var(--m3-on-surface-variant);
  border: 1px solid var(--m3-outline-variant);
  font-size: 14px; font-weight: 500; letter-spacing: .009em;
  cursor: default; position: relative; overflow: hidden;
  transition: background .15s;
}
.chip::before {
  content: ""; position: absolute; inset: 0; background: currentColor; opacity: 0;
  transition: opacity .15s; pointer-events: none; border-radius: inherit;
}
.chip:hover::before { opacity: var(--state-hover); }
.chip.sm { height: 24px; padding: 0 10px; font-size: 12px; gap: 4px; }
.chip.selected, .chip.on {
  background: var(--m3-secondary-container);
  color: var(--m3-on-secondary-container);
  border-color: transparent;
}
.chip.yellow {
  background: var(--m3-tertiary-container); color: var(--m3-on-tertiary-container);
  border-color: transparent;
}
.chip.sky { background: #d3eef8; color: #1c4f5c; border-color: transparent; }
.chip.green {
  background: var(--success-50); color: var(--success); border-color: transparent;
}
.chip.red {
  background: var(--m3-error-container); color: var(--m3-on-error-container);
  border-color: transparent;
}
.chip.gray {
  background: var(--m3-surface-container-high); color: var(--m3-on-surface-variant);
}
.chip .dot { width: 8px; height: 8px; border-radius: 50%; background: currentColor; }

/* ════════════════════════════════════════════════
   mat-card (elevated / outlined / filled)
   ════════════════════════════════════════════════ */
.card {
  background: var(--m3-surface-container-lowest);
  border: 0;
  border-radius: var(--shape-md);
  box-shadow: var(--m3-elev-1);
}
.card.outlined {
  box-shadow: none; border: 1px solid var(--m3-outline-variant);
}
.card.filled {
  background: var(--m3-surface-container-high); box-shadow: none;
}
.card .card-h {
  padding: 16px 16px 0;
  display: flex; align-items: center; gap: 12px;
}
.card .card-h h3 {
  margin: 0; font-size: 16px; font-weight: 500; letter-spacing: .009em;
  color: var(--m3-on-surface);
}
.card .card-h .sub {
  font-size: 14px; color: var(--m3-on-surface-variant);
  letter-spacing: .0178em; margin-top: 2px;
}
.card .card-b { padding: 16px; }
.card.elev-2 { box-shadow: var(--m3-elev-2); }
.card.elev-3 { box-shadow: var(--m3-elev-3); }

/* ════════════════════════════════════════════════
   mat-table + mat-paginator
   ════════════════════════════════════════════════ */
.table-wrap {
  background: var(--m3-surface-container-lowest);
  border: 0;
  border-radius: var(--shape-md);
  overflow: hidden;
  box-shadow: var(--m3-elev-1);
}
.table-toolbar {
  display: flex; align-items: center; gap: 12px;
  padding: 12px 16px;
  border-bottom: 1px solid var(--m3-outline-variant);
  background: var(--m3-surface-container-lowest);
}
.table-toolbar .count {
  font-size: 14px; color: var(--m3-on-surface-variant);
  letter-spacing: .0178em;
}
.table-scroll { overflow: auto; max-height: 58vh; }
table.dt { width: 100%; border-collapse: collapse; font-size: 14px; }
table.dt thead th {
  position: sticky; top: 0; z-index: 2;
  background: var(--m3-surface-container-lowest);
  color: var(--m3-on-surface-variant);
  text-align: left; font-weight: 500; font-size: 12px;
  letter-spacing: .033em;
  padding: 0 var(--pad-x);
  height: 56px;
  border-bottom: 1px solid var(--m3-outline-variant);
  white-space: nowrap;
}
table.dt thead th .sort {
  display: inline-flex; align-items: center; gap: 4px;
  cursor: default;
}
table.dt thead th .sort .material-symbols-outlined { opacity: .55; font-size: 18px; }
table.dt thead th.sorted { color: var(--m3-primary); }
table.dt thead th.sorted .sort .material-symbols-outlined { opacity: 1; color: var(--m3-primary); }
table.dt tbody td {
  padding: 0 var(--pad-x);
  height: var(--row-h);
  border-bottom: 1px solid var(--m3-outline-variant);
  color: var(--m3-on-surface);
  vertical-align: middle;
  white-space: nowrap;
  font-size: 14px;
  letter-spacing: .0178em;
}
table.dt tbody tr {
  position: relative;
  transition: background .12s;
}
table.dt tbody tr:hover { background: rgba(42, 50, 115, .04); }
table.dt tbody tr.selected { background: var(--m3-primary-container); }
table.dt tbody tr.selected:hover { background: var(--m3-primary-container); }
table.dt td.num, table.dt th.num { text-align: right; font-variant-numeric: tabular-nums; }
table.dt td.mono { font-variant-numeric: tabular-nums; font-feature-settings: "tnum"; }
table.dt td .rowbtn {
  height: 32px; padding: 0 12px; font-size: 13px;
  border: 1px solid var(--m3-outline); border-radius: var(--shape-full);
  background: transparent;
  color: var(--m3-primary); cursor: default;
  font-weight: 500; letter-spacing: .089em;
  position: relative; overflow: hidden;
  transition: background .15s;
}
table.dt td .rowbtn::before {
  content: ""; position: absolute; inset: 0; background: currentColor; opacity: 0;
  transition: opacity .15s; pointer-events: none; border-radius: inherit;
}
table.dt td .rowbtn:hover::before { opacity: var(--state-hover); }

.table-pager {
  display: flex; align-items: center; gap: 16px;
  padding: 0 16px;
  height: 56px;
  border-top: 1px solid var(--m3-outline-variant);
  font-size: 12px; color: var(--m3-on-surface-variant);
  background: var(--m3-surface-container-lowest);
  letter-spacing: .033em;
}
.table-pager .spacer { flex: 1; }
.pg-btn {
  width: 40px; height: 40px;
  border: 0; background: transparent; border-radius: 50%;
  display: inline-grid; place-items: center;
  color: var(--m3-on-surface-variant); cursor: default;
  position: relative; overflow: hidden;
}
.pg-btn::before {
  content: ""; position: absolute; inset: 0; background: currentColor; opacity: 0;
  transition: opacity .15s; pointer-events: none; border-radius: inherit;
}
.pg-btn:hover::before { opacity: var(--state-hover); }
.pg-btn:disabled { opacity: .38; pointer-events: none; }

/* ════════════════════════════════════════════════
   mat-checkbox
   ════════════════════════════════════════════════ */
.ckb {
  width: 18px; height: 18px; border: 2px solid var(--m3-on-surface-variant);
  border-radius: 2px;
  display: inline-grid; place-items: center; background: transparent; cursor: default;
  transition: all .15s var(--ease-standard);
  position: relative;
}
.ckb::before {
  content: ""; position: absolute; inset: -10px; border-radius: 50%;
  background: currentColor; opacity: 0; transition: opacity .15s;
}
.ckb:hover::before { opacity: var(--state-hover); }
.ckb.on {
  background: var(--m3-primary); border-color: var(--m3-primary); color: var(--m3-on-primary);
}
.ckb.on::after {
  content: ""; width: 9px; height: 5px;
  border-left: 2px solid #fff; border-bottom: 2px solid #fff;
  transform: rotate(-45deg) translate(1px, -1px);
}

/* mat-radio */
.radio {
  width: 20px; height: 20px; border-radius: 50%;
  border: 2px solid var(--m3-on-surface-variant);
  display: inline-grid; place-items: center; cursor: default;
  position: relative; transition: border-color .15s;
}
.radio::before {
  content: ""; position: absolute; inset: -10px; border-radius: 50%;
  background: currentColor; opacity: 0; transition: opacity .15s;
}
.radio:hover::before { opacity: var(--state-hover); }
.radio.on { border-color: var(--m3-primary); }
.radio.on::after {
  content: ""; width: 10px; height: 10px; border-radius: 50%;
  background: var(--m3-primary);
}

/* mat-slide-toggle */
.toggle {
  width: 52px; height: 32px; border-radius: var(--shape-full);
  background: var(--m3-surface-container-highest); border: 2px solid var(--m3-outline);
  position: relative; cursor: default; transition: background .15s, border-color .15s;
}
.toggle::after {
  content: ""; position: absolute; left: 6px; top: 50%; transform: translate(0, -50%);
  width: 16px; height: 16px; border-radius: 50%;
  background: var(--m3-outline);
  transition: all .2s var(--ease-emphasized);
}
.toggle.on { background: var(--m3-primary); border-color: var(--m3-primary); }
.toggle.on::after {
  left: calc(100% - 30px);
  width: 24px; height: 24px;
  background: var(--m3-on-primary);
}

/* ════════════════════════════════════════════════
   mat-dialog
   ════════════════════════════════════════════════ */
.modal-back {
  position: fixed; inset: 0; z-index: 200;
  background: rgba(0, 0, 0, .32); /* M3 scrim */
  display: grid; place-items: center;
  animation: fadeIn .2s var(--ease-emphasized);
}
.modal {
  background: var(--m3-surface-container-high);
  color: var(--m3-on-surface);
  border-radius: var(--shape-xl);
  width: 480px; max-width: calc(100vw - 40px);
  box-shadow: var(--m3-elev-3);
  overflow: hidden;
  animation: pop .2s var(--ease-emphasized);
}
.modal .modal-h { padding: 24px 24px 0; }
.modal .modal-h h3 {
  margin: 0; font-size: 24px; font-weight: 400; letter-spacing: 0;
  color: var(--m3-on-surface);
}
.modal .modal-h .sub { color: var(--m3-on-surface-variant); font-size: 14px; margin-top: 16px; }
.modal .modal-b {
  padding: 16px 24px;
  font-size: 14px; color: var(--m3-on-surface-variant); letter-spacing: .0178em;
}
.modal .modal-f {
  display: flex; gap: 8px; justify-content: flex-end;
  padding: 16px 24px 24px; background: transparent; border-top: 0;
}
@keyframes fadeIn { from { opacity: 0 } to { opacity: 1 } }
@keyframes pop { from { opacity: 0; transform: scale(.95) } to { opacity: 1; transform: none } }

/* ════════════════════════════════════════════════
   mat-snack-bar
   ════════════════════════════════════════════════ */
.toast-stack {
  position: fixed; bottom: 24px; left: 50%; transform: translateX(-50%);
  z-index: 300;
  display: flex; flex-direction: column; gap: 8px;
  pointer-events: none;
}
.toast {
  background: var(--m3-inverse-surface); color: var(--m3-inverse-on-surface);
  padding: 14px 16px;
  border-radius: var(--shape-xs);
  min-width: 320px; max-width: 480px;
  box-shadow: var(--m3-elev-3);
  display: flex; align-items: center; gap: 12px;
  font-size: 14px; letter-spacing: .0178em;
  animation: snackIn .25s var(--ease-emphasized);
  pointer-events: auto;
  border-left: 0;
}
.toast.success::before {
  content: "check_circle"; font-family: "Material Symbols Outlined"; font-size: 20px;
  color: #a5d6a7;
}
.toast.error::before {
  content: "error"; font-family: "Material Symbols Outlined"; font-size: 20px;
  color: #ef9a9a;
}
.toast.info::before {
  content: "info"; font-family: "Material Symbols Outlined"; font-size: 20px;
  color: var(--m3-inverse-primary);
}
.toast .ti { display: none; }
.toast .tb { flex: 1; }
.toast .tt { font-weight: 500; }
.toast .td { opacity: .85; font-size: 13px; margin-top: 2px; }
.toast .tx {
  opacity: .75; cursor: default; padding: 4px;
  font-size: 13px; font-weight: 500; letter-spacing: .089em; color: var(--m3-inverse-primary);
  text-transform: uppercase;
}
.toast .tx:hover { opacity: 1; }
@keyframes snackIn { from { opacity: 0; transform: translateY(20px) } to { opacity: 1; transform: none } }

/* ── loading (mat-progress-spinner) ── */
.spinner {
  width: 40px; height: 40px; border-radius: 50%;
  border: 4px solid transparent; border-top-color: var(--m3-primary);
  animation: spin 1s linear infinite;
}
.spinner.sm { width: 20px; height: 20px; border-width: 2px; }
.spinner.lg { width: 56px; height: 56px; border-width: 5px; }
@keyframes spin { to { transform: rotate(360deg) } }

.skel {
  background: linear-gradient(90deg, var(--m3-surface-container) 0%, var(--m3-surface-container-low) 50%, var(--m3-surface-container) 100%);
  background-size: 200% 100%; animation: sh 1.4s infinite;
  border-radius: var(--shape-xs);
}
@keyframes sh { 0% { background-position: 100% 0 } 100% { background-position: -100% 0 } }

/* ── empty / error states ── */
.state {
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  padding: 64px 24px; text-align: center; gap: 8px;
}
.state .state-ico {
  width: 64px; height: 64px; border-radius: 16px;
  background: var(--m3-secondary-container); color: var(--m3-on-secondary-container);
  display: grid; place-items: center; margin-bottom: 8px;
  font-size: 32px;
}
.state.err .state-ico { background: var(--m3-error-container); color: var(--m3-on-error-container); }
.state h4 {
  margin: 0; font-size: 22px; font-weight: 400; letter-spacing: 0;
  color: var(--m3-on-surface);
}
.state p {
  margin: 0; color: var(--m3-on-surface-variant); font-size: 14px;
  max-width: 360px; letter-spacing: .0178em;
}
.state .btns { margin-top: 16px; display: flex; gap: 8px; }

/* ── kbd ── */
kbd {
  font-family: "Roboto Mono", ui-monospace, monospace;
  font-size: 11px; font-weight: 500;
  padding: 2px 6px; border-radius: var(--shape-xs);
  background: var(--m3-surface-container-high);
  color: var(--m3-on-surface-variant);
  border: 1px solid var(--m3-outline-variant);
  min-width: 20px; display: inline-block; text-align: center;
}

/* ════════════════════════════════════════════════
   Live auction (kept brand-rich, M3 surfaces underneath)
   ════════════════════════════════════════════════ */
.la-grid { display: grid; grid-template-columns: 1.4fr 1fr; gap: 20px; }
.la-hero {
  background: linear-gradient(135deg, var(--m3-on-primary-container) 0%, var(--m3-primary) 55%, #3a4395 100%);
  color: #fff;
  border-radius: var(--shape-lg);
  padding: 28px;
  position: relative;
  overflow: hidden;
  box-shadow: var(--m3-elev-2);
}
.la-hero::before {
  content: ""; position: absolute; inset: auto -40px -80px auto;
  width: 320px; height: 320px; border-radius: 50%;
  background: radial-gradient(circle, rgba(184, 190, 224, .25), transparent 60%);
  pointer-events: none;
}
.la-hero .tag {
  display: inline-flex; align-items: center; gap: 8px;
  background: rgba(255,182,0,.2); color: var(--m3-tertiary);
  padding: 6px 12px; border-radius: var(--shape-full);
  font-size: 12px; font-weight: 500; letter-spacing: .083em; text-transform: uppercase;
}
.la-hero .tag .pulse {
  width: 8px; height: 8px; border-radius: 50%; background: var(--m3-tertiary);
  animation: pulse 1.4s ease-out infinite;
}
@keyframes pulse {
  0% { box-shadow: 0 0 0 0 rgba(255,182,0,.6) }
  70% { box-shadow: 0 0 0 12px rgba(255,182,0,0) }
  100% { box-shadow: 0 0 0 0 rgba(255,182,0,0) }
}
.la-hero .meta { display: flex; gap: 24px; margin-top: 16px; font-size: 13px; opacity: .8; }
.la-hero .meta b { color: #fff; font-weight: 500; }
.la-hero h2 {
  margin: 8px 0 4px;
  font-size: 45px; font-weight: 300; letter-spacing: 0; line-height: 1.1;
}
.la-hero .sub-addr { font-size: 16px; opacity: .8; font-weight: 400; letter-spacing: .0178em; }

.la-bid {
  margin-top: 24px;
  display: flex; align-items: flex-end; gap: 24px;
}
.la-bid .col { display: flex; flex-direction: column; gap: 4px; }
.la-bid .k {
  font-size: 11px; letter-spacing: .083em; text-transform: uppercase;
  opacity: .75; font-weight: 500;
}
.la-bid .v {
  font-size: 36px; font-weight: 300; font-variant-numeric: tabular-nums;
  letter-spacing: 0;
}
.la-bid .v.big { font-size: 57px; color: var(--m3-tertiary); font-weight: 300; line-height: 1; }

.la-actions {
  display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 12px;
  margin-top: 24px;
}
.la-actions .act {
  height: 72px; padding: 0 24px;
  border-radius: var(--shape-lg);
  border: 1px solid rgba(255,255,255,.2);
  background: rgba(255,255,255,.1);
  color: #fff; font-family: inherit;
  display: flex; align-items: center; gap: 16px;
  cursor: default; text-align: left;
  position: relative; overflow: hidden;
  transition: background .15s, transform .06s, box-shadow .2s;
  font-size: 14px; font-weight: 500; letter-spacing: .089em;
}
.la-actions .act::before {
  content: ""; position: absolute; inset: 0; background: currentColor; opacity: 0;
  transition: opacity .15s; pointer-events: none; border-radius: inherit;
}
.la-actions .act:hover::before { opacity: var(--state-hover); }
.la-actions .act:active::before { opacity: var(--state-pressed); }
.la-actions .act .lbl { font-size: 16px; font-weight: 500; letter-spacing: .089em; }
.la-actions .act .shortcut { margin-left: auto; opacity: .8; }
.la-actions .act.sold {
  background: var(--m3-tertiary); color: var(--m3-on-tertiary); border-color: transparent;
  box-shadow: var(--m3-elev-1);
}
.la-actions .act.sold:hover { box-shadow: var(--m3-elev-2); }
.la-actions .act.adj { background: rgba(186,26,26,.25); border-color: rgba(255,180,180,.4); }

/* ── bid log ── */
.bid-log {
  display: flex; flex-direction: column; gap: 2px;
  max-height: 320px; overflow-y: auto; padding: 4px 4px 4px 0;
}
.bid-entry {
  display: grid; grid-template-columns: 64px 1fr auto;
  gap: 12px; align-items: center;
  padding: 10px 16px;
  border-radius: var(--shape-sm);
  font-size: 14px;
  font-variant-numeric: tabular-nums;
}
.bid-entry:hover { background: var(--m3-surface-container); }
.bid-entry.lead { background: var(--m3-tertiary-container); }
.bid-entry .t { color: var(--m3-on-surface-variant); font-size: 12px; font-family: "Roboto Mono", monospace; }
.bid-entry .who { font-weight: 500; }
.bid-entry .amt { font-weight: 500; font-variant-numeric: tabular-nums; }

/* ── queue list ── */
.queue { display: flex; flex-direction: column; }
.q-row {
  display: grid;
  grid-template-columns: 56px 64px 1fr auto auto;
  gap: 12px; align-items: center;
  padding: 12px 16px;
  border-bottom: 1px solid var(--m3-outline-variant);
  font-size: 14px;
  cursor: default;
  position: relative;
  transition: background .12s;
}
.q-row:hover { background: rgba(42, 50, 115, .04); }
.q-row.current {
  background: var(--m3-tertiary-container);
}
.q-row.current::before {
  content: ""; position: absolute; left: 0; top: 0; bottom: 0; width: 4px;
  background: var(--m3-tertiary);
}
.q-row .idx {
  width: 32px; height: 32px; border-radius: 50%;
  background: var(--m3-secondary-container); color: var(--m3-on-secondary-container);
  display: grid; place-items: center; font-weight: 500; font-size: 13px;
}
.q-row.current .idx { background: var(--m3-tertiary); color: var(--m3-on-tertiary); }
.q-row.done .idx { background: var(--success-50); color: var(--success); }
.q-row.done { opacity: .6; }
.q-row .sr {
  color: var(--m3-on-surface-variant); font-variant-numeric: tabular-nums;
  font-size: 12px; letter-spacing: .033em;
}
.q-row .addr { font-weight: 500; }
.q-row .bid {
  font-variant-numeric: tabular-nums; color: var(--m3-on-surface-variant); font-size: 13px;
}
.q-row .st {
  font-size: 11px; font-weight: 500; letter-spacing: .033em; text-transform: uppercase;
  padding: 4px 12px; border-radius: var(--shape-full);
}
.q-row .st.up { background: var(--m3-tertiary); color: var(--m3-on-tertiary); }
.q-row .st.sold { background: var(--success-50); color: var(--success); }
.q-row .st.adj { background: var(--m3-error-container); color: var(--m3-on-error-container); }
.q-row .st.wait {
  background: var(--m3-surface-container-high); color: var(--m3-on-surface-variant);
}

/* ════════════════════════════════════════════════
   login (Material 3-feel, branded panel + form)
   ════════════════════════════════════════════════ */
.login-shell {
  min-height: 100vh; display: grid; grid-template-columns: 1fr 1.1fr;
  background: var(--m3-surface);
}
.login-brand {
  background: linear-gradient(135deg, var(--m3-on-primary-container) 0%, var(--m3-primary) 60%, #3a4395 100%);
  color: #fff; padding: 56px; position: relative; overflow: hidden;
  display: flex; flex-direction: column;
}
.login-brand::before {
  content: ""; position: absolute; inset: -40% -20% auto auto;
  width: 600px; height: 600px; border-radius: 50%;
  background: radial-gradient(circle, rgba(111,207,235,.25), transparent 60%);
}
.login-brand::after {
  content: ""; position: absolute; inset: auto auto -30% -10%;
  width: 500px; height: 500px; border-radius: 50%;
  background: radial-gradient(circle, rgba(255,182,0,.18), transparent 60%);
}
.login-brand .lb-top {
  display: flex; align-items: center; gap: 14px; position: relative; z-index: 1;
}
.login-brand .mark {
  width: 56px; height: 56px; border-radius: var(--shape-md);
  background: #fff; color: var(--m3-on-primary-container);
  display: grid; place-items: center; font-weight: 700; font-size: 17px;
  overflow: hidden;
}
.login-brand .lb-content { margin-top: auto; position: relative; z-index: 1; }
.login-brand h1 {
  margin: 0 0 16px; font-size: 45px; font-weight: 400; letter-spacing: -.25px; line-height: 1.1;
}
.login-brand h1 b { font-weight: 500; color: var(--m3-tertiary); }
.login-brand p {
  margin: 0; opacity: .85; font-size: 16px; max-width: 480px;
  font-weight: 400; line-height: 1.5; letter-spacing: .031em;
}
.login-brand .stats {
  display: flex; gap: 40px; margin-top: 48px;
  padding-top: 32px; border-top: 1px solid rgba(255,255,255,.18);
}
.login-brand .stat .n { font-size: 32px; font-weight: 400; }
.login-brand .stat .l {
  font-size: 11px; letter-spacing: .083em; text-transform: uppercase;
  opacity: .7; font-weight: 500; margin-top: 4px;
}

.login-form { display: grid; place-items: center; padding: 56px; }
.login-card { width: 100%; max-width: 400px; }
.login-card .title {
  font-size: 32px; font-weight: 400; margin: 0 0 8px; letter-spacing: 0;
  color: var(--m3-on-surface);
}
.login-card .sub {
  color: var(--m3-on-surface-variant); font-size: 14px; margin-bottom: 32px;
  letter-spacing: .0178em;
}
.login-card .fields { display: flex; flex-direction: column; gap: 20px; }
.login-card .row {
  display: flex; align-items: center; justify-content: space-between;
  margin-top: 8px; font-size: 14px;
}
.login-card .row a {
  color: var(--m3-primary); text-decoration: none; font-weight: 500;
  letter-spacing: .089em;
}
.login-card .row a:hover { text-decoration: underline; }
.login-card .foot {
  margin-top: 32px; padding-top: 24px;
  border-top: 1px solid var(--m3-outline-variant);
  font-size: 12px; color: var(--m3-on-surface-variant); text-align: center;
  letter-spacing: .033em;
}

/* ── segmented (mat-button-toggle-group) ── */
.seg {
  display: inline-flex;
  border: 1px solid var(--m3-outline);
  border-radius: var(--shape-full);
  overflow: hidden;
}
.seg button {
  height: 40px; padding: 0 16px;
  border: 0; background: transparent; color: var(--m3-on-surface);
  font-family: inherit; font-size: 14px; font-weight: 500; letter-spacing: .089em;
  cursor: default; position: relative; overflow: hidden;
  transition: background .15s;
}
.seg button + button { border-left: 1px solid var(--m3-outline); }
.seg button::before {
  content: ""; position: absolute; inset: 0; background: currentColor; opacity: 0;
  transition: opacity .15s; pointer-events: none;
}
.seg button:hover::before { opacity: var(--state-hover); }
.seg button.on {
  background: var(--m3-secondary-container); color: var(--m3-on-secondary-container);
}

/* ── progress ── */
.progress {
  height: 4px; background: var(--m3-surface-container-highest);
  border-radius: var(--shape-full); overflow: hidden;
}
.progress > span {
  display: block; height: 100%; background: var(--m3-primary);
  border-radius: var(--shape-full); transition: width .3s var(--ease-emphasized);
}

/* ── tabs (mat-tab-group) ── */
.tabs {
  display: flex; gap: 0;
  border-bottom: 1px solid var(--m3-outline-variant);
}
.tab {
  padding: 0 24px;
  height: 48px;
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 14px; font-weight: 500; letter-spacing: .089em;
  color: var(--m3-on-surface-variant);
  border-bottom: 2px solid transparent; margin-bottom: -1px;
  cursor: default;
  position: relative; overflow: hidden;
  transition: color .15s;
}
.tab::before {
  content: ""; position: absolute; inset: 0; background: currentColor; opacity: 0;
  transition: opacity .15s; pointer-events: none;
}
.tab:hover { color: var(--m3-on-surface); }
.tab:hover::before { opacity: var(--state-hover); }
.tab.on {
  color: var(--m3-primary);
  border-bottom: 3px solid var(--m3-primary);
  border-radius: 3px 3px 0 0;
}

/* ── shortcuts overlay ── */
.shortcuts {
  position: fixed; inset: 0; z-index: 250;
  background: rgba(0,0,0,.32);
  display: grid; place-items: center;
  animation: fadeIn .2s var(--ease-emphasized);
}
.shortcuts .panel {
  background: var(--m3-surface-container-high); border-radius: var(--shape-xl);
  width: 560px; max-width: calc(100vw - 32px);
  padding: 24px 28px; box-shadow: var(--m3-elev-3);
}
.shortcuts h3 {
  margin: 0 0 16px; font-size: 24px; font-weight: 400;
  color: var(--m3-on-surface); letter-spacing: 0;
}
.shortcuts .sgrid {
  display: grid; grid-template-columns: 1fr 1fr; gap: 12px 32px;
}
.shortcuts .sgrid .it {
  display: flex; justify-content: space-between; align-items: center;
  padding: 8px 0; border-bottom: 1px solid var(--m3-outline-variant); font-size: 14px;
  color: var(--m3-on-surface);
}
.shortcuts .sgrid .it:last-child, .shortcuts .sgrid .it:nth-last-child(2) { border-bottom: 0; }
.shortcuts .sgrid .it .keys { display: flex; gap: 4px; }

/* ── scrollbars ── */
::-webkit-scrollbar { width: 12px; height: 12px; }
::-webkit-scrollbar-thumb {
  background: var(--m3-outline-variant); border-radius: 12px;
  border: 3px solid transparent; background-clip: padding-box;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--m3-outline); border: 3px solid transparent; background-clip: padding-box;
}
::-webkit-scrollbar-track { background: transparent; }

/* ── component gallery (showcase page) ── */
.gallery-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.demo-block {
  background: var(--m3-surface-container-lowest);
  border: 1px solid var(--m3-outline-variant);
  border-radius: var(--shape-md);
  padding: 24px;
}
.demo-block h4 {
  margin: 0 0 4px; font-size: 16px; font-weight: 500; color: var(--m3-on-surface);
  letter-spacing: .009em;
}
.demo-block .demo-sub {
  font-size: 14px; color: var(--m3-on-surface-variant); margin-bottom: 16px;
  letter-spacing: .0178em;
}
.demo-row { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; }
.demo-row + .demo-row { margin-top: 12px; }

/* ── swatches ── */
.swatches { display: flex; gap: 12px; flex-wrap: wrap; }
.sw {
  width: 132px; border-radius: var(--shape-md); overflow: hidden;
  border: 1px solid var(--m3-outline-variant); background: var(--m3-surface-container-lowest);
}
.sw .chunk { height: 72px; }
.sw .meta { padding: 12px; font-size: 11px; }
.sw .meta b { display: block; font-size: 13px; font-weight: 500; color: var(--m3-on-surface); }
.sw .meta code {
  color: var(--m3-on-surface-variant); font-size: 11px;
  font-family: "Roboto Mono", monospace;
}

/* ── utility ── */
.hstack { display: flex; gap: 8px; align-items: center; }
.vstack { display: flex; flex-direction: column; gap: 8px; }
.muted { color: var(--m3-on-surface-variant); }
.small { font-size: 12px; letter-spacing: .033em; }
.tabular { font-variant-numeric: tabular-nums; }
.sr-only { position: absolute; width: 1px; height: 1px; clip: rect(0 0 0 0); overflow: hidden; }

/* ── tiny icons (kept for legacy SVG paths) ── */
.ic-sm svg { width: 16px; height: 16px; }
.ic-md svg { width: 20px; height: 20px; }
.ic-lg svg { width: 24px; height: 24px; }

/* ════════════════════════════════════════════════
   Theme variants — switch the M3 primary palette
   data-theme="navy"   (default — City of Buffalo)
   data-theme="indigo" (Material's classic seed)
   data-theme="azure"  (Material 3 default)
   ════════════════════════════════════════════════ */
:root[data-theme="indigo"] {
  --m3-primary: #3f51b5;
  --m3-on-primary: #ffffff;
  --m3-primary-container: #dde1ff;
  --m3-on-primary-container: #00115b;
  --m3-secondary-container: #e1e0f9;
  --m3-on-secondary-container: #1a1b2e;
  --m3-tertiary: #ff4081;
  --m3-on-tertiary: #ffffff;
  --m3-tertiary-container: #ffd9e2;
  --m3-on-tertiary-container: #3f001a;
}
:root[data-theme="azure"] {
  --m3-primary: #0061a4;
  --m3-on-primary: #ffffff;
  --m3-primary-container: #d1e4ff;
  --m3-on-primary-container: #001d36;
  --m3-secondary-container: #d6e3f7;
  --m3-on-secondary-container: #0e1d2a;
  --m3-tertiary: #6750a4;
  --m3-on-tertiary: #ffffff;
  --m3-tertiary-container: #eaddff;
  --m3-on-tertiary-container: #21005d;
}

/* ════════════════════════════════════════════════
   Form appearance — outline (default) vs filled
   In Angular Material, mat-form-field appearance="fill"
   gives an underlined surface-tinted field.
   ════════════════════════════════════════════════ */
:root[data-form-appearance="fill"] .input,
:root[data-form-appearance="fill"] .select,
:root[data-form-appearance="fill"] .textarea {
  border: 0;
  border-bottom: 1px solid var(--m3-on-surface-variant);
  border-radius: var(--shape-xs) var(--shape-xs) 0 0;
  background: var(--m3-surface-container-highest);
}
:root[data-form-appearance="fill"] .input:hover,
:root[data-form-appearance="fill"] .select:hover,
:root[data-form-appearance="fill"] .textarea:hover {
  background: var(--m3-surface-container-high);
  border-bottom-color: var(--m3-on-surface);
}
:root[data-form-appearance="fill"] .input:focus,
:root[data-form-appearance="fill"] .select:focus,
:root[data-form-appearance="fill"] .textarea:focus {
  border-width: 0 0 2px 0;
  padding: 0 16px;
  border-bottom-color: var(--m3-primary);
  background: var(--m3-surface-container-high);
}
:root[data-form-appearance="fill"] .textarea:focus {
  padding: 14px 16px;
}

/* ════════════════════════════════════════════════
   Default button-style preference — applied to .btn.primary
   data-button-style="filled" (default)
   data-button-style="tonal"
   data-button-style="stroked"
   ════════════════════════════════════════════════ */
:root[data-button-style="tonal"] .btn.primary:not(.danger) {
  background: var(--m3-secondary-container);
  color: var(--m3-on-secondary-container);
  box-shadow: none;
}
:root[data-button-style="tonal"] .btn.primary:not(.danger):hover {
  box-shadow: var(--m3-elev-1);
}
:root[data-button-style="stroked"] .btn.primary:not(.danger) {
  background: transparent;
  color: var(--m3-primary);
  border: 1px solid var(--m3-outline);
  box-shadow: none;
}
:root[data-button-style="stroked"] .btn.primary:not(.danger):hover {
  box-shadow: none;
}
