/* ==========================================================================
   HowClaude design system (CONTRACT.md §1) — tokens, base, components, admin shell.
   Light/dark: prefers-color-scheme + manual override via <html data-theme="light|dark">.
   System fonts only (no external CDNs).
   ========================================================================== */

/* ---------------------------------------------------------------- tokens */
:root {
  --bg: #FAF7F2;
  --surface: #FFFFFF;
  --surface-2: #F2EDE4;
  --text: #1F1E1D;
  --text-muted: #6B6660;
  --border: #E7E0D5;
  --accent: #D97757;
  --accent-hover: #C8664A;
  --accent-soft: #F6E3DA;
  --accent-contrast: #FFFFFF;
  /* WCAG AA text/button variant of the coral accent (4.8:1 on bg) */
  --accent-strong: #AD5236;
  --accent-strong-hover: #9A472E;
  --success: #2F9E6E;
  --success-soft: #DDF1E7;
  --danger: #D0473C;
  --danger-soft: #F8DEDB;
  --warning: #B7791F;
  --warning-soft: #F7EBD3;
  --gold: #C99A2E;
  --gold-soft: #F5ECD6;
  --info: #3B6EA8;
  --info-soft: #DFE8F3;

  --radius-sm: 14px;
  --radius: 20px;
  --radius-lg: 28px;
  --radius-pill: 999px;

  --shadow-sm: 0 1px 2px rgba(31, 30, 29, .05), 0 1px 1px rgba(31, 30, 29, .03);
  --shadow: 0 6px 24px -8px rgba(31, 30, 29, .12), 0 2px 6px rgba(31, 30, 29, .04);
  --shadow-lg: 0 24px 60px -20px rgba(31, 30, 29, .22), 0 6px 18px rgba(31, 30, 29, .06);
  --ring: 0 0 0 3px color-mix(in srgb, var(--accent) 35%, transparent);

  --font-display: ui-serif, 'Iowan Old Style', 'Palatino Linotype', Palatino, Georgia, serif;
  --font-sans: system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 'Noto Sans', sans-serif, 'Apple Color Emoji', 'Segoe UI Emoji';
  --font-mono: ui-monospace, SFMono-Regular, 'SF Mono', Menlo, Consolas, 'Liberation Mono', monospace;

  --space-1: 4px; --space-2: 8px; --space-3: 12px; --space-4: 16px; --space-5: 20px;
  --space-6: 24px; --space-8: 32px; --space-10: 40px; --space-12: 48px; --space-16: 64px; --space-20: 80px;

  --container: 1120px;
  --container-narrow: 720px;
  --header-h: 64px;
  --sidebar-w: 248px;

  --ease: cubic-bezier(.2, .7, .2, 1);
  --dur: 180ms;
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #141312; --surface: #1E1D1B; --surface-2: #272522; --text: #F4F1EC; --text-muted: #A39E97;
    --border: #34312D; --accent: #E58A6B; --accent-hover: #EE9C80; --accent-soft: #3A2A23; --accent-contrast: #1A1110; --accent-strong: #E58A6B; --accent-strong-hover: #EE9C80;
    --success: #47B886; --success-soft: #1C3328; --danger: #E8695E; --danger-soft: #3B201D;
    --warning: #E0A84A; --warning-soft: #3A2E1A; --gold: #E2B850; --gold-soft: #3A3120; --info: #7BA7DA; --info-soft: #1E2A3A;
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, .4);
    --shadow: 0 8px 28px -10px rgba(0, 0, 0, .6), 0 2px 6px rgba(0, 0, 0, .3);
    --shadow-lg: 0 24px 60px -20px rgba(0, 0, 0, .75);
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --bg: #141312; --surface: #1E1D1B; --surface-2: #272522; --text: #F4F1EC; --text-muted: #A39E97;
  --border: #34312D; --accent: #E58A6B; --accent-hover: #EE9C80; --accent-soft: #3A2A23; --accent-contrast: #1A1110; --accent-strong: #E58A6B; --accent-strong-hover: #EE9C80;
  --success: #47B886; --success-soft: #1C3328; --danger: #E8695E; --danger-soft: #3B201D;
  --warning: #E0A84A; --warning-soft: #3A2E1A; --gold: #E2B850; --gold-soft: #3A3120; --info: #7BA7DA; --info-soft: #1E2A3A;
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, .4);
  --shadow: 0 8px 28px -10px rgba(0, 0, 0, .6), 0 2px 6px rgba(0, 0, 0, .3);
  --shadow-lg: 0 24px 60px -20px rgba(0, 0, 0, .75);
  color-scheme: dark;
}

/* ---------------------------------------------------------------- reset & base */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0; min-height: 100vh; background: var(--bg); color: var(--text);
  font-family: var(--font-sans); font-size: 16px; line-height: 1.6;
  -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; text-rendering: optimizeLegibility;
}
img, svg, video, canvas { display: block; max-width: 100%; }
img, video { height: auto; }
button, input, select, textarea { font: inherit; color: inherit; }
a { color: var(--accent-strong); text-decoration-thickness: 1px; text-underline-offset: 3px; }
a:hover { color: var(--accent-strong-hover); }
p { margin: 0 0 var(--space-4); }
ul, ol { margin: 0 0 var(--space-4); padding-left: 1.25rem; }
hr, .divider { border: 0; border-top: 1px solid var(--border); margin: var(--space-6) 0; }
code, kbd, pre { font-family: var(--font-mono); font-size: .9em; }
code { background: var(--surface-2); border: 1px solid var(--border); padding: .1em .4em; border-radius: 6px; }
pre { background: var(--surface-2); border: 1px solid var(--border); border-radius: var(--radius-sm); padding: var(--space-4); overflow: auto; }
pre code { background: none; border: 0; padding: 0; }
strong { font-weight: 650; }
::selection { background: var(--accent-soft); color: var(--text); }
[hidden] { display: none !important; }

h1, h2, h3, h4, .h1, .h2, .h3, .h4, .display {
  font-family: var(--font-display); font-weight: 600; line-height: 1.15; letter-spacing: -.01em;
  margin: 0 0 var(--space-4); color: var(--text); text-wrap: balance;
}
.display { font-size: clamp(2.3rem, 5.5vw + .5rem, 4.2rem); letter-spacing: -.025em; }
h1, .h1 { font-size: clamp(2rem, 3vw + 1rem, 3rem); }
h2, .h2 { font-size: clamp(1.6rem, 2vw + .9rem, 2.2rem); }
h3, .h3 { font-size: 1.35rem; }
h4, .h4 { font-size: 1.1rem; }
.lead { font-size: clamp(1.08rem, .5vw + 1rem, 1.3rem); color: var(--text-muted); max-width: 46ch; }
.eyebrow { display: inline-flex; align-items: center; gap: var(--space-2); font-size: .8rem; font-weight: 650; letter-spacing: .08em; text-transform: uppercase; color: var(--accent-strong); margin-bottom: var(--space-3); }
.eyebrow .icon { width: 16px; height: 16px; }

/* focus */
:focus { outline: none; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; border-radius: 6px; }
.skip-link { position: absolute; left: var(--space-4); top: -60px; z-index: 100; background: var(--text); color: var(--bg); padding: var(--space-2) var(--space-4); border-radius: var(--radius-sm); text-decoration: none; transition: top var(--dur) var(--ease); }
.skip-link:focus { top: var(--space-3); color: var(--bg); }
main:focus { outline: none; }

/* icons */
.icon { width: 20px; height: 20px; flex: none; }
.icon-sm { width: 16px; height: 16px; }
.icon-lg { width: 28px; height: 28px; }
.icon-xl { width: 40px; height: 40px; }

/* ---------------------------------------------------------------- layout */
.container { width: 100%; max-width: var(--container); margin-inline: auto; padding-inline: var(--space-5); }
.container-narrow { max-width: var(--container-narrow); }
.narrow { max-width: 760px; }
.section { padding-block: clamp(var(--space-12), 7vw, var(--space-20)); }
.stack > * + * { margin-top: var(--space-3); }
.stack-lg > * + * { margin-top: var(--space-6); }
.cluster { display: flex; flex-wrap: wrap; align-items: center; gap: var(--space-3); }
.grid { display: grid; gap: var(--space-5); }
.grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
@media (min-width: 640px) { .grid-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); } .grid-4 { grid-template-columns: repeat(2, minmax(0, 1fr)); } .grid-3 { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (min-width: 960px) { .grid-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); } .grid-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); } }

/* ---------------------------------------------------------------- brand / header / footer */
.brand { display: inline-flex; align-items: center; gap: var(--space-3); text-decoration: none; color: var(--text); font-family: var(--font-display); font-weight: 650; font-size: 1.2rem; letter-spacing: -.01em; }
.brand:hover { color: var(--text); }
.brand-mark { display: inline-grid; place-items: center; width: 34px; height: 34px; border-radius: 11px; background: var(--accent); color: var(--accent-contrast); font-family: var(--font-display); font-weight: 700; font-size: 1.05rem; box-shadow: var(--shadow-sm); }
.brand-mark-sm { width: 24px; height: 24px; border-radius: 8px; font-size: .8rem; }

.site-header { position: sticky; top: 0; z-index: 40; background: color-mix(in srgb, var(--bg) 82%, transparent); backdrop-filter: saturate(1.4) blur(14px); -webkit-backdrop-filter: saturate(1.4) blur(14px); border-bottom: 1px solid color-mix(in srgb, var(--border) 70%, transparent); }
.site-header-inner { display: flex; align-items: center; justify-content: space-between; gap: var(--space-4); min-height: var(--header-h); }
.site-header-actions { display: flex; align-items: center; gap: var(--space-2); }
.site-main { min-height: calc(100vh - var(--header-h) - 160px); }
.site-footer { border-top: 1px solid var(--border); margin-top: var(--space-16); padding-block: var(--space-10); color: var(--text-muted); font-size: .9rem; }
.site-footer-inner { display: grid; gap: var(--space-2); }
.footer-brand { display: flex; align-items: center; gap: var(--space-2); font-family: var(--font-display); font-weight: 650; color: var(--text); margin: 0; }
.footer-disclaimer, .footer-copy { margin: 0; }

.hero { padding-block: clamp(var(--space-12), 10vw, 120px); }
.hero .lead { margin-bottom: var(--space-8); }

.lang-switch { display: inline-flex; padding: 3px; gap: 2px; background: var(--surface-2); border: 1px solid var(--border); border-radius: var(--radius-pill); }
.lang-link { display: inline-grid; place-items: center; min-width: 38px; height: 30px; padding: 0 var(--space-2); border-radius: var(--radius-pill); font-size: .78rem; font-weight: 650; letter-spacing: .04em; color: var(--text-muted); text-decoration: none; transition: background var(--dur) var(--ease), color var(--dur) var(--ease); }
.lang-link:hover { color: var(--text); }
.lang-link.is-active { background: var(--surface); color: var(--text); box-shadow: var(--shadow-sm); }

.theme-toggle .theme-icon-dark { display: none; }
:root[data-theme="dark"] .theme-toggle .theme-icon-light { display: none; }
:root[data-theme="dark"] .theme-toggle .theme-icon-dark { display: inline-flex; }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .theme-toggle .theme-icon-light { display: none; }
  :root:not([data-theme="light"]) .theme-toggle .theme-icon-dark { display: inline-flex; }
}

/* ---------------------------------------------------------------- buttons */
.btn {
  --btn-bg: var(--surface); --btn-fg: var(--text); --btn-border: var(--border);
  display: inline-flex; align-items: center; justify-content: center; gap: var(--space-2);
  min-height: 44px; padding: 0 var(--space-5); border-radius: var(--radius-sm);
  border: 1px solid var(--btn-border); background: var(--btn-bg); color: var(--btn-fg);
  font-weight: 600; font-size: .95rem; line-height: 1; text-decoration: none; white-space: nowrap; cursor: pointer;
  transition: background var(--dur) var(--ease), border-color var(--dur) var(--ease), color var(--dur) var(--ease), box-shadow var(--dur) var(--ease), transform var(--dur) var(--ease);
  -webkit-tap-highlight-color: transparent; user-select: none;
}
.btn:hover { color: var(--btn-fg); border-color: color-mix(in srgb, var(--btn-border) 70%, var(--text)); }
.btn:active { transform: translateY(1px); }
.btn:focus-visible { outline: none; box-shadow: var(--ring); }
.btn[disabled], .btn.is-disabled { opacity: .55; cursor: not-allowed; pointer-events: none; }
.btn .icon { width: 18px; height: 18px; }
.btn-primary { --btn-bg: var(--accent-strong); --btn-fg: var(--accent-contrast); --btn-border: var(--accent-strong); box-shadow: 0 6px 18px -8px color-mix(in srgb, var(--accent) 70%, transparent); }
.btn-primary:hover { --btn-bg: var(--accent-strong-hover); --btn-border: var(--accent-strong-hover); }
.btn-secondary { --btn-bg: var(--surface-2); --btn-border: var(--border); }
.btn-ghost { --btn-bg: transparent; --btn-border: transparent; }
.btn-ghost:hover { background: var(--surface-2); border-color: transparent; }
.btn-danger { --btn-bg: var(--danger); --btn-fg: #fff; --btn-border: var(--danger); }
.btn-danger:hover { filter: brightness(1.05); }
.btn-success { --btn-bg: var(--success); --btn-fg: #fff; --btn-border: var(--success); }
.btn-link { --btn-bg: transparent; --btn-border: transparent; --btn-fg: var(--accent-strong); padding: 0; min-height: auto; font-weight: 600; }
.btn-link:hover { text-decoration: underline; }
.btn-sm { min-height: 36px; padding: 0 var(--space-3); font-size: .85rem; border-radius: 11px; }
.btn-lg { min-height: 54px; padding: 0 var(--space-8); font-size: 1.05rem; border-radius: var(--radius); }
.btn-block { width: 100%; }
.btn-icon { width: 40px; min-height: 40px; padding: 0; border-radius: 12px; }
.btn-icon.btn-sm { width: 34px; min-height: 34px; }

/* ---------------------------------------------------------------- cards */
.card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: var(--space-6); box-shadow: var(--shadow-sm); }
.card-lg { padding: var(--space-8); border-radius: var(--radius-lg); }
.card-raised { box-shadow: var(--shadow); }
.card-accent { border-color: color-mix(in srgb, var(--accent) 45%, var(--border)); background: linear-gradient(180deg, var(--accent-soft), var(--surface) 70%); }
.card-head { display: flex; align-items: flex-start; justify-content: space-between; gap: var(--space-4); margin-bottom: var(--space-4); }
.card-head > :is(h2, h3, h4) { margin: 0; }
.card-link { display: block; color: inherit; text-decoration: none; transition: transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease), border-color var(--dur) var(--ease); }
.card-link:hover { color: inherit; transform: translateY(-2px); box-shadow: var(--shadow); border-color: color-mix(in srgb, var(--accent) 35%, var(--border)); }

.stat-label { margin: 0 0 var(--space-1); font-size: .85rem; color: var(--text-muted); font-weight: 550; }
.stat-value { margin: 0; font-family: var(--font-display); font-size: 2rem; font-weight: 650; line-height: 1.1; }
.stat-delta { font-size: .82rem; font-weight: 600; }
.stat-delta.up { color: var(--success); }
.stat-delta.down { color: var(--danger); }

/* avatar (speaker glyphs: initial letter in a coloured circle) */
.avatar { display: inline-grid; place-items: center; width: 34px; height: 34px; border-radius: 50%; background: var(--accent-soft); color: var(--accent-strong); font-weight: 700; font-size: .9rem; flex: none; }
.avatar-lg { width: 48px; height: 48px; font-size: 1.15rem; }
.avatar-guide { background: var(--accent); color: var(--accent-contrast); }
.avatar-claude { background: var(--gold-soft); color: var(--gold); }
.avatar-user { background: var(--surface-2); color: var(--text); border: 1px solid var(--border); }

/* ---------------------------------------------------------------- badges */
.badge { display: inline-flex; align-items: center; gap: 4px; padding: 3px 10px; border-radius: var(--radius-pill); font-size: .75rem; font-weight: 650; line-height: 1.4; background: var(--surface-2); color: var(--text-muted); border: 1px solid var(--border); white-space: nowrap; }
.badge .icon { width: 13px; height: 13px; }
.badge-accent { background: var(--accent-soft); color: var(--accent-strong); border-color: transparent; }
.badge-success { background: var(--success-soft); color: var(--success); border-color: transparent; }
.badge-danger { background: var(--danger-soft); color: var(--danger); border-color: transparent; }
.badge-warning { background: var(--warning-soft); color: var(--warning); border-color: transparent; }
.badge-gold { background: var(--gold-soft); color: var(--gold); border-color: transparent; }
.badge-info { background: var(--info-soft); color: var(--info); border-color: transparent; }
.badge-muted { background: var(--surface-2); color: var(--text-muted); }

/* ---------------------------------------------------------------- alerts & toasts */
.alert { display: flex; align-items: flex-start; gap: var(--space-3); padding: var(--space-4); border-radius: var(--radius-sm); border: 1px solid transparent; margin-bottom: var(--space-4); font-size: .95rem; }
.alert .icon { margin-top: 2px; }
.alert-info { background: var(--info-soft); color: var(--text); border-color: color-mix(in srgb, var(--info) 30%, transparent); }
.alert-info .icon { color: var(--info); }
.alert-success { background: var(--success-soft); border-color: color-mix(in srgb, var(--success) 30%, transparent); }
.alert-success .icon { color: var(--success); }
.alert-warning { background: var(--warning-soft); border-color: color-mix(in srgb, var(--warning) 30%, transparent); }
.alert-warning .icon { color: var(--warning); }
.alert-error { background: var(--danger-soft); border-color: color-mix(in srgb, var(--danger) 30%, transparent); }
.alert-error .icon { color: var(--danger); }

.toast-region { position: fixed; z-index: 200; right: var(--space-4); bottom: var(--space-4); left: var(--space-4); display: flex; flex-direction: column; align-items: flex-end; gap: var(--space-2); pointer-events: none; }
@media (min-width: 640px) { .toast-region { left: auto; width: 400px; } }
.toast { pointer-events: auto; display: flex; align-items: flex-start; gap: var(--space-3); width: 100%; padding: var(--space-3) var(--space-3) var(--space-3) var(--space-4); background: var(--surface); color: var(--text); border: 1px solid var(--border); border-left: 4px solid var(--info); border-radius: var(--radius-sm); box-shadow: var(--shadow-lg); animation: toast-in 260ms var(--ease) both; }
.toast.is-leaving { animation: toast-out 200ms var(--ease) both; }
.toast-success { border-left-color: var(--success); } .toast-success .toast-icon { color: var(--success); }
.toast-error { border-left-color: var(--danger); } .toast-error .toast-icon { color: var(--danger); }
.toast-warning { border-left-color: var(--warning); } .toast-warning .toast-icon { color: var(--warning); }
.toast-info .toast-icon { color: var(--info); }
.toast-text { flex: 1; font-size: .93rem; padding-top: 1px; }
.toast-close { flex: none; display: inline-grid; place-items: center; width: 28px; height: 28px; border: 0; background: transparent; border-radius: 8px; color: var(--text-muted); cursor: pointer; }
.toast-close:hover { background: var(--surface-2); color: var(--text); }
.toast-close .icon { width: 16px; height: 16px; }
@keyframes toast-in { from { opacity: 0; transform: translateY(10px) scale(.98); } to { opacity: 1; transform: none; } }
@keyframes toast-out { to { opacity: 0; transform: translateY(6px); } }

/* ---------------------------------------------------------------- forms */
.form-stack { display: grid; gap: var(--space-4); }
.form-inline { display: flex; flex-wrap: wrap; align-items: flex-end; gap: var(--space-3); }
.form-inline .field { flex: 1 1 220px; margin: 0; }
.inline-form { display: inline; margin: 0; }
.fieldset { border: 1px solid var(--border); border-radius: var(--radius-sm); padding: var(--space-4) var(--space-5) var(--space-5); margin: 0; display: grid; gap: var(--space-4); }
.fieldset legend { padding: 0 var(--space-2); font-weight: 650; font-size: .9rem; color: var(--text-muted); }
.field { display: grid; gap: 6px; }
.label { font-size: .88rem; font-weight: 600; color: var(--text); }
.label-row { display: flex; align-items: baseline; justify-content: space-between; gap: var(--space-3); }
.help { font-size: .82rem; color: var(--text-muted); margin: 0; }
.field-error { font-size: .82rem; color: var(--danger); margin: 0; font-weight: 550; }
.input, .select, .textarea {
  width: 100%; min-height: 46px; padding: 10px 14px; background: var(--surface); color: var(--text);
  border: 1px solid var(--border); border-radius: 12px; font-size: 1rem; line-height: 1.4;
  transition: border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease), background var(--dur) var(--ease);
  appearance: none; -webkit-appearance: none;
}
.input::placeholder, .textarea::placeholder { color: color-mix(in srgb, var(--text-muted) 75%, transparent); }
.input:hover, .select:hover, .textarea:hover { border-color: color-mix(in srgb, var(--border) 50%, var(--text-muted)); }
.input:focus, .select:focus, .textarea:focus { outline: none; border-color: var(--accent); box-shadow: var(--ring); }
.input[readonly] { background: var(--surface-2); }
.input:disabled, .select:disabled, .textarea:disabled { opacity: .6; cursor: not-allowed; }
.has-error .input, .has-error .select, .has-error .textarea, .input[aria-invalid="true"] { border-color: var(--danger); }
.textarea { min-height: 120px; resize: vertical; }
.select { padding-right: 40px; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' fill='none' stroke='%236B6660' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m4 6 4 4 4-4'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 14px center; }
.input-code { font-family: var(--font-mono); font-size: 1.35rem; letter-spacing: .3em; text-align: center; }
.input-group { display: flex; align-items: stretch; gap: var(--space-2); }
.input-group .input { flex: 1; }
.input-group .btn { min-height: 46px; width: 46px; border: 1px solid var(--border); }
.check { display: inline-flex; align-items: center; gap: var(--space-2); cursor: pointer; font-size: .95rem; }
.check input[type="checkbox"], .check input[type="radio"] { width: 18px; height: 18px; accent-color: var(--accent); margin: 0; }
.switch { position: relative; display: inline-flex; align-items: center; gap: var(--space-3); cursor: pointer; }
.switch input { position: absolute; opacity: 0; width: 1px; height: 1px; }
.switch-track { width: 42px; height: 24px; border-radius: 999px; background: var(--border); position: relative; transition: background var(--dur) var(--ease); flex: none; }
.switch-track::after { content: ""; position: absolute; top: 3px; left: 3px; width: 18px; height: 18px; border-radius: 50%; background: #fff; box-shadow: var(--shadow-sm); transition: transform var(--dur) var(--ease); }
.switch input:checked + .switch-track { background: var(--accent); }
.switch input:checked + .switch-track::after { transform: translateX(18px); }
.switch input:focus-visible + .switch-track { box-shadow: var(--ring); }

/* ---------------------------------------------------------------- tables */
.table-wrap { position: relative; width: 100%; overflow-x: auto; border: 1px solid var(--border); border-radius: var(--radius-sm); background: var(--surface); -webkit-overflow-scrolling: touch; }
.table { width: 100%; border-collapse: collapse; font-size: .92rem; }
.table th, .table td { padding: 12px 16px; text-align: left; border-bottom: 1px solid var(--border); vertical-align: middle; }
.table th { font-size: .76rem; text-transform: uppercase; letter-spacing: .06em; color: var(--text-muted); font-weight: 650; background: var(--surface-2); white-space: nowrap; }
.table tbody tr:last-child td { border-bottom: 0; }
.table tbody tr:hover td { background: color-mix(in srgb, var(--surface-2) 55%, transparent); }
.table .num { text-align: right; font-variant-numeric: tabular-nums; }
.table-compact th, .table-compact td { padding: 8px 12px; }
.empty-state { text-align: center; padding: var(--space-12) var(--space-6); color: var(--text-muted); }
.empty-state .icon { margin: 0 auto var(--space-3); width: 40px; height: 40px; color: var(--border); }

/* bars (admin charts) */
.bar { height: 8px; border-radius: 999px; background: var(--surface-2); overflow: hidden; }
.bar > span { display: block; height: 100%; background: var(--accent); border-radius: inherit; }

/* ---------------------------------------------------------------- misc components */
.breadcrumbs ol { display: flex; flex-wrap: wrap; gap: 6px; list-style: none; margin: 0 0 2px; padding: 0; font-size: .8rem; color: var(--text-muted); }
.breadcrumbs li + li::before { content: "/"; margin-right: 6px; opacity: .6; }
.breadcrumbs a { color: var(--text-muted); text-decoration: none; }
.breadcrumbs a:hover { color: var(--text); }
.code-list { list-style: none; padding: 0; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--space-2); }
.code-list code { display: block; text-align: center; font-size: 1rem; padding: 8px; }
.secret { font-size: 1rem; letter-spacing: .08em; word-break: break-all; }
.qr-wrap { display: flex; flex-wrap: wrap; align-items: center; gap: var(--space-6); margin: var(--space-4) 0; }
.qr { background: #fff; padding: var(--space-2); border-radius: var(--radius-sm); border: 1px solid var(--border); line-height: 0; }
.qr svg { width: 200px; height: 200px; }
.check-list { list-style: none; padding: 0; margin: var(--space-3) 0; display: grid; gap: 6px; font-size: .92rem; }
.check-list li { display: flex; align-items: center; gap: var(--space-2); }
.check-list .icon { width: 16px; height: 16px; }
.check-list .is-ok .icon { color: var(--success); }
.check-list .is-bad .icon { color: var(--danger); }
.check-list .is-bad { color: var(--danger); }
.requirements { margin-bottom: var(--space-4); font-size: .92rem; }
.requirements summary { cursor: pointer; font-weight: 600; color: var(--text-muted); }

.ad-slot { position: relative; margin: var(--space-8) auto; padding: var(--space-3); min-height: 120px; border: 1px dashed var(--border); border-radius: var(--radius-sm); background: color-mix(in srgb, var(--surface-2) 50%, transparent); }
.ad-label { position: absolute; top: 4px; left: 10px; font-size: .68rem; letter-spacing: .08em; text-transform: uppercase; color: var(--text-muted); }
.house-ad { display: flex; gap: var(--space-4); align-items: center; }
.house-ad img { width: 72px; height: 72px; object-fit: cover; border-radius: var(--radius-sm); }

.spinner { width: 20px; height: 20px; border-radius: 50%; border: 2px solid var(--border); border-top-color: var(--accent); animation: spin .8s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }
.skeleton { background: linear-gradient(90deg, var(--surface-2), var(--border), var(--surface-2)); background-size: 200% 100%; animation: shimmer 1.4s ease infinite; border-radius: 8px; }
@keyframes shimmer { to { background-position: -200% 0; } }
.progress { height: 10px; border-radius: 999px; background: var(--surface-2); overflow: hidden; }
.progress > span { display: block; height: 100%; background: linear-gradient(90deg, var(--accent), var(--gold)); border-radius: inherit; transition: width 400ms var(--ease); }

/* ---------------------------------------------------------------- auth / install / error pages */
.auth-page, .error-page { background: radial-gradient(1200px 600px at 10% -10%, var(--accent-soft), transparent 60%), var(--bg); }
.auth-wrap { width: 100%; max-width: 440px; margin: 0 auto; padding: clamp(var(--space-8), 8vh, var(--space-20)) var(--space-4) var(--space-10); }
.auth-wrap-wide { max-width: 720px; }
.auth-brand { display: flex; align-items: center; gap: var(--space-3); margin-bottom: var(--space-6); font-family: var(--font-display); font-weight: 650; font-size: 1.2rem; }
.auth-brand-actions { margin-left: auto; }
.auth-card { padding: clamp(var(--space-6), 5vw, var(--space-10)); border-radius: var(--radius-lg); box-shadow: var(--shadow); }
.auth-title { font-size: 1.7rem; margin-bottom: var(--space-2); display: flex; align-items: center; gap: var(--space-2); }
.auth-subtitle { color: var(--text-muted); margin-bottom: var(--space-6); font-size: .95rem; }
.auth-alt { margin: var(--space-5) 0 0; text-align: center; }
.auth-alt a { display: inline-flex; align-items: center; gap: 6px; }
.auth-alt .icon { width: 16px; height: 16px; }
.auth-foot { margin-top: var(--space-6); text-align: center; font-size: .8rem; color: var(--text-muted); }

.error-wrap { max-width: 620px; margin: 0 auto; padding: clamp(var(--space-10), 12vh, 140px) var(--space-5) var(--space-10); }
.error-code { font-family: var(--font-display); font-size: clamp(4.5rem, 14vw, 8rem); line-height: 1; margin: var(--space-10) 0 var(--space-2); color: var(--accent-strong); letter-spacing: -.04em; }
.error-title { font-size: clamp(1.6rem, 3vw + 1rem, 2.4rem); }
.error-text { color: var(--text-muted); font-size: 1.08rem; margin-bottom: var(--space-8); }
.error-debug { margin-top: var(--space-8); font-size: .85rem; }
.error-debug pre { white-space: pre-wrap; word-break: break-word; }
.error-foot { margin-top: var(--space-12); font-size: .8rem; color: var(--text-muted); }

/* ---------------------------------------------------------------- admin shell */
.admin { background: var(--bg); }
.admin-shell { display: grid; grid-template-columns: 1fr; min-height: 100vh; }
.admin-sidebar {
  position: fixed; inset: 0 auto 0 0; z-index: 60; width: min(86vw, var(--sidebar-w)); display: flex; flex-direction: column;
  background: var(--surface); border-right: 1px solid var(--border); padding: var(--space-4) var(--space-3);
  transform: translateX(-100%); transition: transform 240ms var(--ease); overflow-y: auto;
}
.admin-shell.is-nav-open .admin-sidebar { transform: none; box-shadow: var(--shadow-lg); }
.admin-backdrop { position: fixed; inset: 0; z-index: 55; background: rgba(20, 19, 18, .45); }
.admin-sidebar-head { display: flex; align-items: center; justify-content: space-between; padding: var(--space-1) var(--space-2) var(--space-5); }
.admin-nav ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 2px; }
.admin-nav-link { display: flex; align-items: center; gap: var(--space-3); padding: 10px var(--space-3); border-radius: 12px; color: var(--text-muted); text-decoration: none; font-weight: 550; font-size: .94rem; transition: background var(--dur) var(--ease), color var(--dur) var(--ease); }
.admin-nav-link:hover { background: var(--surface-2); color: var(--text); }
.admin-nav-link.is-active { background: var(--accent-soft); color: var(--accent-strong); }
.admin-nav-link .icon { width: 19px; height: 19px; }
.admin-sidebar-foot { margin-top: auto; padding-top: var(--space-4); border-top: 1px solid var(--border); }
.admin-main { display: flex; flex-direction: column; min-width: 0; }
.admin-topbar { position: sticky; top: 0; z-index: 30; display: flex; align-items: center; gap: var(--space-3); min-height: var(--header-h); padding: var(--space-3) var(--space-4); background: color-mix(in srgb, var(--bg) 88%, transparent); backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px); border-bottom: 1px solid var(--border); }
.admin-topbar-title { flex: 1; min-width: 0; }
.admin-page-title { font-size: 1.35rem; margin: 0; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.admin-topbar-actions { display: flex; align-items: center; gap: var(--space-1); }
.admin-user { display: none; align-items: center; gap: var(--space-2); margin-left: var(--space-2); font-size: .9rem; font-weight: 600; }
.admin-content { flex: 1; padding: var(--space-5) var(--space-4) var(--space-10); width: 100%; max-width: 1280px; }
.admin-footer { padding: var(--space-4); font-size: .78rem; color: var(--text-muted); border-top: 1px solid var(--border); }
.sr-only-mobile { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
@media (min-width: 1024px) {
  .admin-shell { grid-template-columns: var(--sidebar-w) minmax(0, 1fr); }
  .admin-sidebar { position: sticky; top: 0; height: 100vh; transform: none; width: auto; }
  .admin-sidebar-close, .admin-menu-btn, .admin-backdrop { display: none !important; }
  .admin-topbar { padding-inline: var(--space-8); }
  .admin-content { padding: var(--space-8); }
  .admin-footer { padding-inline: var(--space-8); }
  .admin-user { display: inline-flex; }
  .sr-only-mobile { position: static; width: auto; height: auto; overflow: visible; clip: auto; }
}

/* ---------------------------------------------------------------- utilities */
.sr-only { position: absolute !important; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0; }
.text-muted { color: var(--text-muted); }
.text-accent { color: var(--accent-strong); }
.text-success { color: var(--success); }
.text-danger { color: var(--danger); }
.text-gold { color: var(--gold); }
.text-center { text-align: center; }
.text-right { text-align: right; }
.small { font-size: .85rem; }
.tiny { font-size: .75rem; }
.mono { font-family: var(--font-mono); }
.serif { font-family: var(--font-display); }
.nowrap { white-space: nowrap; }
.truncate { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.tabular { font-variant-numeric: tabular-nums; }
.link-muted { color: var(--text-muted); text-decoration: none; }
.link-muted:hover { color: var(--text); text-decoration: underline; }
.flex { display: flex; } .inline-flex { display: inline-flex; } .items-center { align-items: center; } .justify-between { justify-content: space-between; } .flex-wrap { flex-wrap: wrap; } .flex-1 { flex: 1; }
.gap-1 { gap: var(--space-1); } .gap-2 { gap: var(--space-2); } .gap-3 { gap: var(--space-3); } .gap-4 { gap: var(--space-4); } .gap-6 { gap: var(--space-6); }
.m-0 { margin: 0; } .mt-2 { margin-top: var(--space-2); } .mt-4 { margin-top: var(--space-4); } .mt-6 { margin-top: var(--space-6); } .mt-8 { margin-top: var(--space-8); }
.mb-0 { margin-bottom: 0; } .mb-2 { margin-bottom: var(--space-2); } .mb-4 { margin-bottom: var(--space-4); } .mb-6 { margin-bottom: var(--space-6); } .mb-8 { margin-bottom: var(--space-8); }
.p-0 { padding: 0; } .w-full { width: 100%; }
.rounded { border-radius: var(--radius-sm); } .rounded-lg { border-radius: var(--radius-lg); }
.shadow { box-shadow: var(--shadow); }
.surface { background: var(--surface); } .surface-2 { background: var(--surface-2); }
@media (max-width: 639px) { .hide-mobile { display: none !important; } }
@media (min-width: 640px) { .show-mobile { display: none !important; } }

/* ---------------------------------------------------------------- motion & print */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
}
@media print {
  .site-header, .site-footer, .admin-sidebar, .admin-topbar, .toast-region, .ad-slot, .theme-toggle { display: none !important; }
  body { background: #fff; color: #000; }
}