/* ============================================================================
   MAITRI APP — shared component library for the re-imagined product surfaces.
   Link order:  tokens.css → tokens-night.css(media) → onboarding.css (atoms:
   orb/btn/badge/switch/prov/reveal) → components.css (suggest/guardrail/chip/
   thread/bubble/memory…) → maitri-app.css (this file: app shell + product cards).

   GOLDEN RULE (swappable design system): every value here is a var(--token).
   No raw hex, no raw font-family, no raw shadow. Re-point tokens.css and the
   entire product re-skins. Screen files add ONLY layout (grid/flex/scoped
   page styles) and likewise consume tokens — never raw color/type/elevation.
   ========================================================================= */

/* SAFETY NET: an inline icon SVG with NO width/height attribute AND no CSS size
   stretches huge in a flex/grid container (the "giant ? / lock" overflow bug).
   :where() keeps this at specificity 0, so ANY real sizing (an attr or a class
   rule) always wins — this only catches genuinely-unsized icons. */
:where(svg:not([width]):not([height])) { width: 1.1em; height: 1.1em; flex: none; }

/* reset body's onboarding centering — the app is a full-bleed shell */
body.app { display: block; padding: 0; min-height: 100vh; }

/* ---- App shell: fixed icon rail · scrolling main · optional right aside --- */
.shell { display: grid; grid-template-columns: 72px minmax(0,1fr); min-height: 100vh; }
.shell--aside { grid-template-columns: 72px minmax(0,1fr) clamp(340px, 30vw, 432px); }

/* ---- Left rail (primary nav) ------------------------------------------------ */
.rail { position: sticky; top: 0; height: 100vh; display: flex; flex-direction: column;
  align-items: center; gap: var(--space-2); padding: var(--space-4) 0; background: var(--color-surface-warm);
  border-right: 1px solid var(--color-border); z-index: var(--z-sticky); }
.rail__logo { display: grid; place-items: center; width: 44px; height: 44px; margin-bottom: var(--space-3); text-decoration: none; }
.rail__nav { display: flex; flex-direction: column; gap: 6px; align-items: center; }
.rail__sep { width: 28px; height: 1px; background: var(--color-border); margin: var(--space-2) 0; }
.rail__item { position: relative; width: 44px; height: 44px; display: grid; place-items: center;
  border-radius: var(--radius-md); color: var(--color-text-subtle); background: transparent; border: 0;
  cursor: pointer; text-decoration: none; transition: color var(--dur-fast), background var(--dur-fast), transform var(--dur-fast) var(--ease-standard); }
.rail__item svg { width: 21px; height: 21px; }
.rail__item:hover { color: var(--color-primary-text); background: var(--color-primary-soft); transform: translateY(-1px); }
.rail__item:focus-visible { outline: none; box-shadow: var(--shadow-focus); }
.rail__item[aria-current="page"], .rail__item.is-active { color: var(--color-on-primary); background: var(--color-primary); }
.rail__item[aria-current="page"]::before, .rail__item.is-active::before { content: ""; position: absolute; left: -10px; top: 50%; transform: translateY(-50%); width: 4px; height: 22px; border-radius: var(--radius-pill); background: var(--maitri-aura); }
/* tooltip on hover (calm orientation) */
.rail__item[data-tip]::after { content: attr(data-tip); position: absolute; left: calc(100% + 12px); top: 50%; transform: translateY(-50%) scale(0.96);
  white-space: nowrap; background: var(--color-inverse); color: var(--color-on-inverse); font-size: var(--fs-caption); font-weight: var(--fw-medium);
  padding: 5px var(--space-3); border-radius: var(--radius-sm); opacity: 0; pointer-events: none; transition: opacity var(--dur-fast), transform var(--dur-fast) var(--ease-emphasized); box-shadow: var(--shadow-2); z-index: var(--z-overlay); }
.rail__item:hover[data-tip]::after { opacity: 1; transform: translateY(-50%) scale(1); }
.rail__spacer { flex: 1; }
.rail__avatar { width: 36px; height: 36px; border-radius: var(--radius-round); object-fit: cover; border: 1.5px solid var(--color-border); }

/* ---- Main column ----------------------------------------------------------- */
.main { min-width: 0; min-height: 100vh; display: flex; flex-direction: column;
  background:
    radial-gradient(900px 520px at 88% -12%, rgba(46,139,127,0.07), transparent 60%),
    radial-gradient(760px 480px at -10% 0%, rgba(224,116,74,0.05), transparent 55%),
    var(--color-bg); }
.page { width: 100%; max-width: var(--container); margin: 0 auto; padding: clamp(var(--space-6), 4vw, var(--space-12)) clamp(var(--space-5), 4vw, var(--space-10)) var(--space-20); }
.page--reading { max-width: 1140px; }

/* ---- Page header (eyebrow · display title · sub) ---------------------------- */
.page__head { margin-bottom: var(--space-8); }
.eyebrow { display: inline-flex; align-items: center; gap: var(--space-2); font-family: var(--font-mono); font-size: var(--fs-eyebrow); font-weight: var(--fw-medium);
  text-transform: uppercase; letter-spacing: var(--tracking-eyebrow); color: var(--color-primary-text); margin: 0 0 var(--space-3); }
.page__title { font-family: var(--font-display); font-weight: var(--fw-regular); letter-spacing: var(--tracking-tight);
  font-size: var(--fs-h1); line-height: var(--lh-tight); color: var(--color-text); margin: 0; }
.page__title em, .accent { font-style: italic; color: var(--color-primary-text); }
.page__sub { font-size: var(--fs-body-lg); color: var(--color-text-muted); margin: var(--space-3) 0 0; max-width: var(--measure); }

/* ---- Category tabs + subtabs ------------------------------------------------ */
.tabs { display: flex; gap: var(--space-2); flex-wrap: wrap; align-items: center; }
.tab { display: inline-flex; align-items: center; gap: var(--space-2); font: inherit; font-size: var(--fs-body-sm); font-weight: var(--fw-medium);
  color: var(--color-text-muted); background: var(--color-surface); border: 1px solid var(--color-border); border-radius: var(--radius-pill);
  padding: var(--space-2) var(--space-4); cursor: pointer; text-decoration: none; transition: all var(--dur-fast) var(--ease-standard); }
.tab:hover { color: var(--color-text); border-color: var(--color-border-strong); transform: translateY(-1px); }
.tab:focus-visible { outline: none; box-shadow: var(--shadow-focus); }
.tab[aria-selected="true"], .tab.is-active { color: var(--color-on-primary); background: var(--color-primary); border-color: transparent; box-shadow: var(--shadow-1); }
.subtabs { display: flex; gap: var(--space-5); flex-wrap: wrap; border-bottom: 1px solid var(--color-border); margin: var(--space-6) 0 var(--space-8); }
.subtab { position: relative; font: inherit; font-size: var(--fs-body-sm); font-weight: var(--fw-medium); color: var(--color-text-subtle);
  background: 0; border: 0; padding: 0 0 var(--space-3); cursor: pointer; transition: color var(--dur-fast); }
.subtab:hover { color: var(--color-text); }
.subtab[aria-selected="true"], .subtab.is-active { color: var(--color-primary-text); }
.subtab[aria-selected="true"]::after, .subtab.is-active::after { content: ""; position: absolute; left: 0; right: 0; bottom: -1px; height: 2px; background: var(--maitri-aura); border-radius: var(--radius-pill); }

/* ---- Toolbar: search + sort ------------------------------------------------- */
.toolbar { display: flex; align-items: center; justify-content: space-between; gap: var(--space-4); flex-wrap: wrap; margin-bottom: var(--space-6); }
.search { display: flex; align-items: center; gap: var(--space-2); background: var(--color-surface); border: 1px solid var(--color-border);
  border-radius: var(--radius-pill); padding: var(--space-2) var(--space-4); color: var(--color-text-hint); min-width: 240px; flex: 1; max-width: 420px; }
.search:focus-within { border-color: var(--color-primary); box-shadow: var(--shadow-focus); }
.search input { border: 0; background: 0; font: inherit; font-size: var(--fs-body-sm); color: var(--color-text); width: 100%; outline: none; }
.select { display: inline-flex; align-items: center; gap: var(--space-2); font-size: var(--fs-body-sm); color: var(--color-text-muted);
  background: var(--color-surface); border: 1px solid var(--color-border); border-radius: var(--radius-pill); padding: var(--space-2) var(--space-4); cursor: pointer; }

/* ---- Grid + section --------------------------------------------------------- */
.grid { display: grid; gap: var(--space-5); grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); }
.grid--2 { grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)); }
.grid--wide { grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); }
.section { margin-bottom: var(--space-10); }
.section__title { display: flex; align-items: center; gap: var(--space-3); font-family: var(--font-display); font-weight: var(--fw-medium);
  font-size: var(--fs-h3); color: var(--color-text); margin: 0 0 var(--space-5); }
.section__title .count { font-family: var(--font-mono); font-size: var(--fs-caption); color: var(--color-text-subtle); font-weight: var(--fw-regular); }
.year { font-family: var(--font-display); font-size: var(--fs-h2); color: var(--color-text); margin: var(--space-8) 0 var(--space-5); }

/* ---- Card base + variants --------------------------------------------------- */
.card { position: relative; display: flex; flex-direction: column; background: var(--color-surface); border: 1px solid var(--color-border);
  border-radius: var(--radius-lg); box-shadow: var(--shadow-1); overflow: hidden;
  transition: transform var(--dur-base) var(--ease-standard), box-shadow var(--dur-base), border-color var(--dur-fast); }
.card--pad { padding: var(--space-5); }
.card--link { cursor: pointer; text-decoration: none; color: inherit; }
.card--link:hover { transform: translateY(-3px); box-shadow: var(--shadow-3); border-color: color-mix(in srgb, var(--color-primary) 32%, var(--color-surface)); }
.card--link:focus-visible { outline: none; box-shadow: var(--shadow-focus); }

/* media card (photo + body) — trips, inspirations */
.media { aspect-ratio: 16 / 10; background: var(--color-bg-sunken) center/cover no-repeat; position: relative; }
.media::after { content: ""; position: absolute; inset: 0; background: linear-gradient(to top, rgba(33,28,22,0.28), transparent 46%); opacity: 0; transition: opacity var(--dur-base); }
.card--link:hover .media::after { opacity: 1; }
.media__tag { position: absolute; top: var(--space-3); left: var(--space-3); font-size: var(--fs-caption); font-weight: var(--fw-semibold);
  color: var(--color-text); background: var(--color-surface); padding: 4px var(--space-3); border-radius: var(--radius-pill); box-shadow: var(--shadow-1); backdrop-filter: blur(6px); }
.card__body { padding: var(--space-4) var(--space-5) var(--space-5); display: flex; flex-direction: column; gap: var(--space-2); flex: 1; }
.card__title { font-size: var(--fs-title); font-weight: var(--fw-semibold); color: var(--color-text); margin: 0; line-height: var(--lh-snug); display: flex; align-items: center; gap: var(--space-2); }
.card__meta { font-size: var(--fs-caption); color: var(--color-text-subtle); display: flex; align-items: center; gap: var(--space-2); flex-wrap: wrap; }
.card__foot { margin-top: auto; display: flex; align-items: center; justify-content: space-between; padding-top: var(--space-3); }

/* insight card — Insights / "as Maitri sees it" */
.insight { padding: var(--space-5); gap: var(--space-3); }
.insight__eyebrow { font-family: var(--font-mono); font-size: var(--fs-eyebrow); font-weight: var(--fw-medium); letter-spacing: var(--tracking-eyebrow); text-transform: uppercase; color: var(--color-text-subtle); }
.insight__title { display: flex; align-items: center; gap: var(--space-2); font-size: var(--fs-title); font-weight: var(--fw-semibold); color: var(--color-text); margin: var(--space-1) 0; }
.insight__icon { width: 32px; height: 32px; border-radius: var(--radius-sm); display: grid; place-items: center; background: var(--color-primary-soft); color: var(--color-primary-text); flex: none; }
.insight__desc { font-size: var(--fs-body-sm); color: var(--color-text-muted); margin: 0; }
.insight__stats { display: flex; gap: var(--space-2); flex-wrap: wrap; margin-top: var(--space-2); }

/* provider row — Connect Accounts */
.provider { display: flex; align-items: center; gap: var(--space-4); padding: var(--space-4) var(--space-5); }
.provider__logo { width: 40px; height: 40px; border-radius: var(--radius-md); object-fit: contain; background: var(--color-surface); border: 1px solid var(--color-border); padding: 4px; flex: none; }
.provider__body { flex: 1; min-width: 0; }
.provider__name { font-size: var(--fs-body-sm); font-weight: var(--fw-semibold); color: var(--color-text); }
.provider__sub { font-size: var(--fs-caption); color: var(--color-text-subtle); }
.status { display: inline-flex; align-items: center; gap: 6px; font-size: var(--fs-caption); font-weight: var(--fw-semibold); padding: 4px var(--space-3); border-radius: var(--radius-pill); }
.status--on { color: var(--success-700); background: var(--success-bg); border: 1px solid var(--success-border); }
.status--off { color: var(--color-text-muted); background: var(--color-bg-sunken); border: 1px solid var(--color-border); }

/* stat chip */
.stat { display: inline-flex; align-items: center; gap: 6px; font-size: var(--fs-caption); font-weight: var(--fw-medium);
  color: var(--color-primary-text); background: var(--color-primary-soft); border: 1px solid color-mix(in srgb, var(--color-primary) 22%, var(--color-surface)); padding: 4px var(--space-3); border-radius: var(--radius-pill); }

/* big stat headline ("You wandered through 46 cities…") */
.stathero { font-family: var(--font-display); font-weight: var(--fw-regular); font-size: var(--fs-h2); line-height: var(--lh-snug); color: var(--color-text); margin: 0 0 var(--space-2); }
.stathero b { color: var(--color-primary-text); font-weight: var(--fw-regular); font-style: italic; }

/* ---- Conversation composer ------------------------------------------------- */
.composer { display: flex; flex-direction: column; gap: var(--space-3); background: var(--color-surface); border: 1px solid var(--color-border);
  border-radius: var(--radius-xl); padding: var(--space-4) var(--space-5); box-shadow: var(--shadow-2); }
.composer:focus-within { border-color: var(--color-primary); box-shadow: var(--shadow-3); }
.composer textarea, .composer input.compose { border: 0; background: 0; font: inherit; font-size: var(--fs-body); color: var(--color-text); resize: none; outline: none; width: 100%; min-height: 28px; }
.composer__row { display: flex; align-items: center; justify-content: space-between; gap: var(--space-2); }
.modelpick { display: inline-flex; align-items: center; gap: var(--space-2); font-size: var(--fs-body-sm); font-weight: var(--fw-medium); color: var(--color-primary-text);
  background: var(--color-primary-soft); border: 0; border-radius: var(--radius-pill); padding: 6px var(--space-3); cursor: pointer; }
.send { width: 44px; height: 44px; border-radius: var(--radius-round); display: grid; place-items: center; border: 0; cursor: pointer;
  color: var(--color-on-primary); background: var(--maitri-aura); box-shadow: var(--maitri-glow); transition: transform var(--dur-fast) var(--ease-emphasized); }
.send:hover { transform: scale(1.06); }
.send:focus-visible { outline: none; box-shadow: var(--shadow-focus); }

/* prompt-suggestion chips (home) */
.prompts { display: flex; gap: var(--space-2); flex-wrap: wrap; justify-content: center; }
.prompt { font: inherit; font-size: var(--fs-body-sm); color: var(--color-text-muted); background: var(--color-surface); border: 1px solid var(--color-border);
  border-radius: var(--radius-pill); padding: var(--space-2) var(--space-4); cursor: pointer; transition: all var(--dur-fast) var(--ease-standard); text-decoration: none; }
.prompt:hover { color: var(--color-primary-text); border-color: color-mix(in srgb, var(--color-primary) 32%, var(--color-surface)); background: var(--color-primary-soft); transform: translateY(-1px); }

/* message row actions (copy/edit) */
.msg-actions { display: flex; gap: var(--space-2); color: var(--color-text-hint); margin-top: var(--space-1); }
.msg-actions button { background: 0; border: 0; color: inherit; cursor: pointer; padding: 4px; border-radius: var(--radius-xs); }
.msg-actions button:hover { color: var(--color-primary-text); background: var(--color-primary-soft); }

/* ---- Right aside: Inspirations rail ---------------------------------------- */
.aside { position: sticky; top: 0; height: 100vh; overflow-y: auto; border-left: 1px solid var(--color-border);
  background: var(--color-surface-warm); padding: var(--space-6) var(--space-5); }
.aside__head { display: flex; align-items: center; justify-content: space-between; margin-bottom: var(--space-4); }
.aside__title { font-family: var(--font-display); font-style: italic; font-size: var(--fs-h3); color: var(--color-text); }

/* ---- List rows (chats history) --------------------------------------------- */
.rowlist { display: flex; flex-direction: column; }
.row { display: flex; align-items: center; justify-content: space-between; gap: var(--space-4); min-height: 44px; padding: var(--space-4) var(--space-3);
  border-bottom: 1px solid var(--color-border); text-decoration: none; color: inherit; transition: background var(--dur-fast); border-radius: var(--radius-sm); }
.row:hover { background: var(--color-surface); }
.row:focus-visible { outline: none; box-shadow: var(--shadow-focus); }
.row__title { font-size: var(--fs-body); font-weight: var(--fw-medium); color: var(--color-text); }
.row__time { font-size: var(--fs-caption); color: var(--color-text-subtle); }

/* ---- Empty state ----------------------------------------------------------- */
.empty { display: grid; place-items: center; gap: var(--space-3); text-align: center; padding: var(--space-16) var(--space-6); color: var(--color-text-subtle); }
.empty__icon { width: 56px; height: 56px; border-radius: var(--radius-xl); display: grid; place-items: center; background: var(--color-primary-soft); color: var(--color-primary-text); }
.empty__title { font-family: var(--font-display); font-size: var(--fs-h3); color: var(--color-text); margin: 0; }
.empty__sub { font-size: var(--fs-body-sm); color: var(--color-text-muted); margin: 0; max-width: 44ch; }

/* ---- Scroll affordance (house combo): edge-fade on horizontal scrollers ----- */
.scroller { position: relative; }
.scroller__track { display: flex; gap: var(--space-4); overflow-x: auto; scroll-snap-type: x mandatory; padding-bottom: var(--space-3); scrollbar-width: thin; }
.scroller__track > * { scroll-snap-align: start; flex: 0 0 auto; }
.scroller::after { content: ""; position: absolute; top: 0; right: 0; bottom: var(--space-3); width: 56px; pointer-events: none;
  background: linear-gradient(to right, transparent, var(--color-bg)); opacity: 0; transition: opacity var(--dur-base); }
.scroller[data-more="true"]::after { opacity: 1; }

/* ---- Theme toggle (the floating one is injected by app.js on every screen) -- */
.theme-toggle { display: inline-flex; align-items: center; gap: 7px; padding: 8px var(--space-4); border-radius: var(--radius-pill);
  border: 1px solid var(--color-border); background: var(--color-surface); color: var(--color-text-muted); font: inherit;
  font-size: var(--fs-caption); font-weight: var(--fw-medium); cursor: pointer; box-shadow: var(--shadow-2); }
.theme-toggle svg { width: 16px; height: 16px; }
.theme-toggle:hover { color: var(--color-text); border-color: var(--line-strong); }
.theme-toggle:focus-visible { outline: none; box-shadow: var(--shadow-focus); }
.theme-toggle--float { position: fixed; right: var(--space-5); bottom: var(--space-5); z-index: var(--z-toast); }
@media (max-width: 640px) { .theme-toggle--float { bottom: 84px; } }

/* ---- Demo persona switcher (floating, bottom-left) ------------------------- */
.persona-switch { position: fixed; left: calc(72px + var(--space-4)); bottom: var(--space-5); z-index: var(--z-toast); }
.persona-switch__btn { display: inline-flex; align-items: center; gap: var(--space-2); padding: 8px var(--space-4); border-radius: var(--radius-pill);
  border: 1px solid var(--color-border); background: var(--color-surface); color: var(--color-text-muted); font: inherit; font-size: var(--fs-caption);
  font-weight: var(--fw-medium); cursor: pointer; box-shadow: var(--shadow-2); }
.persona-switch__btn:hover { color: var(--color-text); border-color: var(--line-strong); }
.persona-switch__btn:focus-visible { outline: none; box-shadow: var(--shadow-focus); }
.persona-switch__btn svg { width: 16px; height: 16px; color: var(--color-primary-text); }
.persona-switch__btn b { color: var(--color-text); font-weight: var(--fw-semibold); }
.persona-switch__menu { position: absolute; bottom: calc(100% + var(--space-2)); left: 0; min-width: 220px; background: var(--color-surface);
  border: 1px solid var(--color-border); border-radius: var(--radius-lg); box-shadow: var(--shadow-3); padding: var(--space-2); }
.persona-switch__menu[hidden] { display: none; }
.persona-switch__hd { font-size: var(--fs-eyebrow); text-transform: uppercase; letter-spacing: var(--tracking-eyebrow); font-weight: var(--fw-semibold);
  color: var(--color-text-subtle); margin: var(--space-2) var(--space-3) var(--space-2); }
.persona-switch__menu button { display: flex; align-items: center; gap: var(--space-3); width: 100%; text-align: left; font: inherit; font-size: var(--fs-body-sm);
  color: var(--color-text); background: none; border: 0; border-radius: var(--radius-md); padding: var(--space-2) var(--space-3); cursor: pointer; }
.persona-switch__menu button:hover { background: var(--color-bg-sunken); }
.persona-switch__menu button:focus-visible { outline: none; box-shadow: var(--shadow-focus); }
.persona-dot { width: 9px; height: 9px; border-radius: var(--radius-round); background: var(--line-strong); flex: none; }
.persona-switch__menu button[aria-checked="true"] { color: var(--color-primary-text); font-weight: var(--fw-semibold); }
.persona-switch__menu button[aria-checked="true"] .persona-dot { background: var(--maitri-aura); }
@media (max-width: 640px) { .persona-switch { left: var(--space-4); bottom: 84px; } }

/* ---- Responsive: collapse aside, then rail-to-bottom ----------------------- */
@media (max-width: 1100px) { .shell--aside { grid-template-columns: 72px minmax(0,1fr); } .aside { display: none; } }
@media (max-width: 640px) {
  .shell, .shell--aside { grid-template-columns: 1fr; }
  .rail { position: fixed; bottom: 0; top: auto; left: 0; right: 0; height: auto; width: 100%; flex-direction: row; justify-content: space-around;
    border-right: 0; border-top: 1px solid var(--color-border); padding: var(--space-2); }
  /* the icon list must run horizontally in the bottom bar (base is a vertical column) */
  .rail__nav { flex-direction: row; gap: var(--space-1); flex: 1; justify-content: space-around; overflow-x: auto; }
  .rail__logo, .rail__spacer, .rail__sep { display: none; }
  .rail__item[data-tip]::after { display: none; }
  .main { padding-bottom: 76px; }
}