/* Reusable components. Reads only from tokens.css. Page-specific layout lives in site.css. */

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-padding-top: calc(var(--appbar-h) + var(--space-3)); }
body {
  margin: 0; background: var(--color-bg); color: var(--color-text);
  font: var(--text-md)/var(--leading-md) var(--font-sans);
  -webkit-tap-highlight-color: transparent;
}
img, svg { max-width: 100%; }
a { color: var(--color-primary); }
[hidden] { display: none !important; }
:focus-visible { outline: none; box-shadow: var(--focus-ring); border-radius: var(--radius-sm); }
main:focus { outline: none; }

h1, h2, h3 { margin: 0; font-weight: 700; color: var(--color-text); }
h1 { font-size: var(--text-2xl); line-height: var(--leading-2xl); }
h2 { font-size: var(--text-xl); line-height: var(--leading-xl); }
h3 { font-size: var(--text-lg); line-height: var(--leading-lg); }
p { margin: 0; }
.lead { color: var(--color-text-muted); font-size: var(--text-md); }
.muted { color: var(--color-text-muted); }
.small { font-size: var(--text-xs); line-height: var(--leading-xs); }
.mono { font-family: var(--font-mono); letter-spacing: .02em; }
.visually-hidden { position: absolute !important; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }

/* ---- App shell ------------------------------------------------------------------------------------------------ */
.skip-link { position: absolute; left: var(--space-2); top: -100px; z-index: 3000; background: var(--color-surface); color: var(--color-text);
  padding: var(--space-3) var(--space-4); border-radius: var(--radius-sm); box-shadow: var(--shadow-2); }
.skip-link:focus { top: var(--space-2); }

.appbar { position: sticky; top: 0; z-index: 1000; display: flex; align-items: center; justify-content: space-between; gap: var(--space-3);
  min-height: var(--appbar-h); padding: 0 var(--gutter); padding-top: env(safe-area-inset-top);
  background: var(--color-primary); color: var(--color-on-primary); }
.appbar a, .appbar button { color: inherit; }
.appbar-brand { display: inline-flex; align-items: center; gap: var(--space-2); min-height: var(--touch-min); font-weight: 700; font-size: var(--text-lg);
  text-decoration: none; }
.brand-mark { width: 22px; height: 22px; border-radius: 6px; background: var(--color-on-primary); position: relative; flex: none; }
.brand-mark::after { content: ""; position: absolute; inset: 6px; border-radius: 2px; background: var(--color-primary); }
.appbar-actions { display: flex; align-items: center; gap: var(--space-1); }
.appbar-link { display: inline-flex; align-items: center; min-height: var(--touch-min); padding: 0 var(--space-3); font-weight: 600; text-decoration: none;
  background: none; border: 0; font: inherit; cursor: pointer; border-radius: var(--radius-sm); }
.appbar-link:hover { background: rgba(255, 255, 255, .14); }
.appbar :focus-visible { box-shadow: 0 0 0 3px var(--color-primary), 0 0 0 5px #fff; }

.page { max-width: var(--page-max); margin: 0 auto; padding: var(--space-5) var(--gutter) calc(var(--space-6) + var(--bottomnav-h) + env(safe-area-inset-bottom)); }
.page > * + * { margin-top: var(--space-4); }
.page-head { display: grid; gap: var(--space-2); }
.signed-out .page { padding-bottom: var(--space-6); }

.bottomnav { position: fixed; left: 0; right: 0; bottom: 0; z-index: 1000; display: grid; grid-auto-flow: column; grid-auto-columns: 1fr;
  background: var(--color-surface); border-top: 1px solid var(--color-border); padding-bottom: env(safe-area-inset-bottom); box-shadow: 0 -2px 10px rgba(16, 32, 48, .06); }
.bottomnav a { display: grid; justify-items: center; align-content: center; gap: 2px; min-height: var(--bottomnav-h); padding: var(--space-2) var(--space-1);
  color: var(--color-text-muted); text-decoration: none; font-size: var(--text-xs); font-weight: 600; }
.bottomnav a svg { width: 24px; height: 24px; }
.bottomnav a[aria-current="page"] { color: var(--color-primary); }
.bottomnav a[aria-current="page"] svg { stroke-width: 2.4; }

/* ---- Buttons -------------------------------------------------------------------------------------------------- */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: var(--space-2); min-height: var(--touch-comfort); padding: var(--space-3) var(--space-5);
  border-radius: var(--radius-md); border: 1.5px solid var(--color-border); background: var(--color-surface); color: var(--color-text);
  font: 600 var(--text-md)/1.2 var(--font-sans); text-decoration: none; text-align: center; cursor: pointer;
  transition: background var(--motion-fast), border-color var(--motion-fast), transform var(--motion-fast); user-select: none; }
.btn:hover { background: var(--color-surface-2); }
.btn:active { transform: scale(.985); }
.btn svg { width: 20px; height: 20px; flex: none; }
.btn-primary { background: var(--color-primary); border-color: var(--color-primary); color: var(--color-on-primary); }
.btn-primary:hover { background: var(--color-primary-strong); border-color: var(--color-primary-strong); }
.btn-secondary { background: var(--color-surface); border-color: var(--color-primary); color: var(--color-primary); }
.btn-ghost { background: transparent; border-color: transparent; color: var(--color-primary); }
.btn-danger { background: var(--color-danger); border-color: var(--color-danger); color: #fff; }
.btn-sm { min-height: var(--touch-min); padding: var(--space-2) var(--space-4); font-size: var(--text-sm); border-radius: var(--radius-sm); }
.btn-block { display: flex; width: 100%; }
.btn[aria-disabled="true"], .btn:disabled { opacity: .5; pointer-events: none; }
.btn[aria-busy="true"]::before { content: ""; width: 18px; height: 18px; border-radius: 50%; border: 2.5px solid currentColor; border-right-color: transparent; animation: spin .8s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }
@media (prefers-reduced-motion: reduce) { .btn[aria-busy="true"]::before { animation-duration: 2.4s; } }
.btn-row { display: flex; flex-wrap: wrap; gap: var(--space-2); }
.btn-row > .btn { flex: 1 1 auto; }

/* ---- Cards, tags, chips ------------------------------------------------------------------------------------------ */
.card { background: var(--color-surface); border: 1px solid var(--color-border); border-radius: var(--radius-lg); padding: var(--space-4); box-shadow: var(--shadow-1); }
.card > * + * { margin-top: var(--space-3); }
.card-title { font-size: var(--text-lg); }
.card.is-primary { border: 2px solid var(--color-primary); }
.card.is-active { outline: 3px solid var(--color-focus); }

.chip, .tag { display: inline-flex; align-items: center; gap: var(--space-1); min-height: 28px; padding: 2px var(--space-3); border-radius: var(--radius-pill);
  border: 1px solid var(--color-border); font-size: var(--text-xs); font-weight: 600; color: var(--color-text-muted); background: var(--color-surface); }
.chip[data-tone="success"], .tag[data-tone="success"] { color: var(--color-success); background: var(--color-success-bg); border-color: transparent; }
.chip[data-tone="warning"], .tag[data-tone="warning"] { color: var(--color-warning); background: var(--color-warning-bg); border-color: transparent; }
.chip[data-tone="danger"], .tag[data-tone="danger"] { color: var(--color-danger); background: var(--color-danger-bg); border-color: transparent; }
.chip[data-tone="info"], .tag[data-tone="info"] { color: var(--color-info); background: var(--color-info-bg); border-color: transparent; }
.chip-row { display: flex; flex-wrap: wrap; gap: var(--space-2); }

/* Selectable filter chip (a real checkbox/radio underneath) */
.filter { position: relative; }
.filter input { position: absolute; opacity: 0; inset: 0; width: 100%; height: 100%; margin: 0; cursor: pointer; }
.filter span { display: inline-flex; align-items: center; min-height: var(--touch-min); padding: 0 var(--space-4); border-radius: var(--radius-pill);
  border: 1.5px solid var(--color-border); background: var(--color-surface); font-weight: 600; font-size: var(--text-sm); }
.filter input:checked + span { background: var(--color-primary); border-color: var(--color-primary); color: var(--color-on-primary); }
.filter input:focus-visible + span { box-shadow: var(--focus-ring); }

/* ---- Segmented control ---------------------------------------------------------------------------------------------- */
.segmented { display: grid; grid-auto-flow: column; grid-auto-columns: 1fr; padding: var(--space-1); gap: var(--space-1); background: var(--color-surface-2);
  border-radius: var(--radius-md); border: 1px solid var(--color-border); }
.segmented label { position: relative; display: grid; place-items: center; min-height: var(--touch-min); padding: 0 var(--space-3); border-radius: var(--radius-sm);
  font-weight: 600; font-size: var(--text-sm); color: var(--color-text-muted); text-align: center; cursor: pointer; }
.segmented input { position: absolute; opacity: 0; inset: 0; margin: 0; cursor: pointer; }
.segmented label:has(input:checked) { background: var(--color-surface); color: var(--color-primary); box-shadow: var(--shadow-1); }
.segmented label:has(input:focus-visible) { box-shadow: var(--focus-ring); }

/* ---- Banners and states --------------------------------------------------------------------------------------------- */
.banner { display: flex; gap: var(--space-3); align-items: flex-start; padding: var(--space-3) var(--space-4); border-radius: var(--radius-md); font-size: var(--text-sm);
  background: var(--color-info-bg); color: var(--color-info); }
.banner svg { width: 20px; height: 20px; flex: none; margin-top: 1px; }
.banner[data-tone="success"] { background: var(--color-success-bg); color: var(--color-success); }
.banner[data-tone="warning"] { background: var(--color-warning-bg); color: var(--color-warning); }
.banner[data-tone="danger"] { background: var(--color-danger-bg); color: var(--color-danger); }
.banner-stack > * + * { margin-top: var(--space-2); }

.state { display: grid; justify-items: center; gap: var(--space-3); padding: var(--space-6) var(--space-4); text-align: center; }
.state svg { width: 40px; height: 40px; color: var(--color-text-muted); }
.state[data-tone="danger"] svg { color: var(--color-danger); }
.state p { color: var(--color-text-muted); max-width: 34ch; }

.skeleton { position: relative; overflow: hidden; background: var(--color-surface-2); border-radius: var(--radius-sm); min-height: 16px; }
.skeleton::after { content: ""; position: absolute; inset: 0; transform: translateX(-100%);
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, .45), transparent); animation: shimmer 1.3s infinite; }
@media (prefers-color-scheme: dark) { .skeleton::after { background: linear-gradient(90deg, transparent, rgba(255, 255, 255, .08), transparent); } }
@keyframes shimmer { to { transform: translateX(100%); } }
@media (prefers-reduced-motion: reduce) { .skeleton::after { animation: none; } }
.skeleton-card { display: grid; gap: var(--space-3); }
.skeleton-line { height: 14px; } .skeleton-line.w-60 { width: 60%; } .skeleton-line.w-40 { width: 40%; } .skeleton-block { height: 150px; }

.progress-steps { display: grid; gap: var(--space-2); margin: 0; padding: 0; list-style: none; }
.progress-steps li { display: flex; align-items: center; gap: var(--space-3); color: var(--color-text-muted); font-size: var(--text-sm); }
.progress-steps li::before { content: ""; width: 18px; height: 18px; border-radius: 50%; border: 2px solid var(--color-border); flex: none; }
.progress-steps li[data-state="active"] { color: var(--color-text); font-weight: 600; }
.progress-steps li[data-state="active"]::before { border-color: var(--color-primary); border-right-color: transparent; animation: spin .9s linear infinite; }
.progress-steps li[data-state="done"]::before { background: var(--color-success); border-color: var(--color-success); }

/* ---- Stepper (guided flows) ------------------------------------------------------------------------------------------- */
.steps { display: grid; gap: var(--space-3); margin: 0; padding: 0; list-style: none; counter-reset: step; }
.step { display: grid; grid-template-columns: 36px 1fr; gap: var(--space-3); align-items: start; }
.step-num { width: 36px; height: 36px; border-radius: 50%; display: grid; place-items: center; font-weight: 700; background: var(--color-surface-2); color: var(--color-text-muted); }
.step[data-state="done"] .step-num { background: var(--color-success); color: #fff; }
.step[data-state="active"] .step-num { background: var(--color-primary); color: var(--color-on-primary); }
.step-body > * + * { margin-top: var(--space-2); }

/* ---- Facts, meter ------------------------------------------------------------------------------------------------------- */
.facts { display: grid; gap: var(--space-2); margin: 0; }
.fact { display: grid; grid-template-columns: minmax(8.5em, 38%) 1fr; gap: var(--space-3); font-size: var(--text-sm); }
.fact dt { color: var(--color-text-muted); }
.fact dd { margin: 0; font-weight: 600; overflow-wrap: anywhere; }
.meter { height: 10px; border-radius: var(--radius-pill); background: var(--color-surface-2); overflow: hidden; }
.meter > i { display: block; height: 100%; background: var(--color-success); width: var(--value, 0%); transition: width var(--motion-base); }
.meter[data-band="mid"] > i { background: #b45309; }
.meter[data-band="low"] > i { background: var(--color-danger); }

/* ---- Dialog / sheet --------------------------------------------------------------------------------------------------------- */
dialog.sheet { width: min(94vw, 480px); max-height: 88vh; padding: 0; border: 0; border-radius: var(--radius-lg); background: var(--color-surface); color: var(--color-text);
  box-shadow: var(--shadow-2); overflow: auto; }
dialog.sheet::backdrop { background: rgba(10, 20, 30, .55); }
.sheet-body { padding: var(--space-5) var(--space-4) var(--space-4); display: grid; gap: var(--space-4); }
.sheet-actions { display: flex; flex-wrap: wrap; gap: var(--space-2); }
.sheet-actions > .btn { flex: 1 1 auto; }
@media (max-width: 520px) { dialog.sheet { margin: auto auto 0; width: 100vw; max-width: none; border-radius: var(--radius-lg) var(--radius-lg) 0 0; } }

/* ---- Toasts --------------------------------------------------------------------------------------------------------------------- */
.toast-region { position: fixed; left: var(--gutter); right: var(--gutter); bottom: calc(var(--bottomnav-h) + var(--space-3) + env(safe-area-inset-bottom)); z-index: 2500;
  display: grid; gap: var(--space-2); justify-items: center; pointer-events: none; }
.toast { background: var(--color-text); color: var(--color-bg); padding: var(--space-3) var(--space-4); border-radius: var(--radius-md); box-shadow: var(--shadow-2); font-size: var(--text-sm); max-width: 92vw; }

/* ---- Forms ------------------------------------------------------------------------------------------------------------------------- */
.field { display: grid; gap: var(--space-2); }
.field > label, .field-label { font-weight: 600; font-size: var(--text-sm); }
.input { width: 100%; min-height: var(--touch-comfort); padding: var(--space-3) var(--space-4); border-radius: var(--radius-md); border: 1.5px solid var(--color-border);
  background: var(--color-surface); color: var(--color-text); font: inherit; }
.input:focus-visible { box-shadow: var(--focus-ring); border-color: var(--color-focus); }
.field-hint { font-size: var(--text-xs); color: var(--color-text-muted); }
.field-error { font-size: var(--text-sm); color: var(--color-danger); font-weight: 600; }
.input[aria-invalid="true"] { border-color: var(--color-danger); }
input[type="range"] { width: 100%; min-height: var(--touch-min); accent-color: var(--color-primary); }

/* ---- Images ------------------------------------------------------------------------------------------------------------------------ */
.thumb { width: 100%; aspect-ratio: 3 / 2; border-radius: var(--radius-md); overflow: hidden; background: var(--color-surface-2); border: 1px solid var(--color-border); display: grid; place-items: center; }
.thumb a, .thumb img { display: block; width: 100%; height: 100%; }
.thumb img { object-fit: cover; }
.thumb-empty { color: var(--color-text-muted); font-size: var(--text-sm); padding: var(--space-3); text-align: center; }
@media (min-width: 720px) { .thumb { aspect-ratio: 16 / 9; } }