/* SELL4ME product surface: a calm, opaque, text-first application shell.
   Luminous Ink: porcelain canvas, ink text, one mineral signal for the accent; status
   always carries its meaning in words as well as in colour. System humanist sans-serif;
   no web fonts; no motion. Desktop-first, usable down to a 375 px phone. */

:root {
  --canvas: #f5f4f0;
  --surface: #ffffff;
  --surface-muted: #eeece6;
  --surface-sunken: #f9f8f5;
  --ink: #1b2230;
  --ink-soft: #4b5563;
  --ink-faint: #7b8494;
  --line: #d8d5cc;
  --line-strong: #c3bfb3;
  --signal: #0f7c8a;
  --signal-soft: #dff0f2;
  --signal-ink: #ffffff;
  --focus: #0b5ea8;
  --tone-neutral-bg: #eeece6;
  --tone-neutral-fg: #3a4250;
  --tone-success-bg: #e3f1ea;
  --tone-success-fg: #175b3a;
  --tone-warning-bg: #fbeedc;
  --tone-warning-fg: #7a4b0a;
  --tone-danger-bg: #f9e3e1;
  --tone-danger-fg: #8a1f1a;
  --radius: 6px;
  --radius-large: 10px;
  --gap: 16px;
  --sidebar-width: 232px;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, Ubuntu, "Helvetica Neue", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.45;
  color: var(--ink);
  background: var(--canvas);
}

* { box-sizing: border-box; }

/* The HTML `hidden` attribute is authoritative. Blocks that also carry an author
   `display` (grid, flex) would otherwise outrank the browser's own `[hidden]` rule and
   render while hidden: the mapping panel, the import preview and the inline forms. */
[hidden] { display: none !important; }

body {
  margin: 0;
  min-height: 100vh;
  background: var(--canvas);
  color: var(--ink);
  display: flex;
  flex-direction: column;
}

h1, h2, h3, h4 { margin: 0 0 12px; line-height: 1.2; text-wrap: balance; }
h1 { font-size: 1.5rem; font-weight: 600; }
h2 { font-size: 1.15rem; font-weight: 600; }
h3 { font-size: 1rem; font-weight: 600; }
h4 { font-size: 0.95rem; font-weight: 600; }
p { margin: 0 0 8px; }
.lead { font-size: 1.02rem; color: var(--ink-soft); max-width: 68ch; }
.eyebrow { margin: 0 0 2px; font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.08em; color: var(--ink-faint); }
.visually-hidden {
  position: absolute !important;
  width: 1px; height: 1px;
  margin: -1px; padding: 0; border: 0;
  overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap;
}
.diag { font-size: 0.8rem; color: var(--ink-faint); overflow-wrap: anywhere; }

.skip-link {
  position: absolute;
  left: -999px;
  top: 8px;
  background: var(--surface);
  color: var(--ink);
  padding: 8px 12px;
  border: 2px solid var(--focus);
  border-radius: var(--radius);
  z-index: 10;
}
.skip-link:focus { left: 8px; }

/* ---- header ---------------------------------------------------------------------- */

.shell-header {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--gap);
  padding: 14px 24px;
  background: var(--surface);
  border-bottom: 1px solid var(--line);
}

/* The approved SELL4ME brand, byte-copies of the released kit under static/brand/:
   the horizontal lockup at its 200 px default in a normal header, the compact symbol
   beside the text wordmark where the header is narrow. The gradient stays inside the
   mark; it is never applied to controls, cards or chips. */
.brand { display: flex; align-items: center; gap: 12px; min-width: 0; }
.brand-lockup { display: block; width: 200px; height: auto; }
.brand-compact { display: none; align-items: center; gap: 8px; }
.brand-symbol { display: block; width: 32px; height: 32px; }
.wordmark-text {
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--ink);
}
.wordmark-note {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--ink-soft);
}

.status-chip {
  margin: 0;
  padding: 6px 12px;
  border-radius: 999px;
  font-size: 0.85rem;
  background: var(--tone-neutral-bg);
  color: var(--tone-neutral-fg);
  flex: 1 1 200px;
  max-width: max-content;
}

.header-right {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  flex-wrap: wrap;
  gap: 12px;
  flex: 1 1 auto;
  min-width: 0;
}

.lang-switch { display: inline-flex; gap: 4px; flex: none; }
.lang-btn {
  padding: 4px 10px;
  font: inherit;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  background: var(--surface);
  color: var(--ink-soft);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  cursor: pointer;
}
.lang-btn.is-active {
  background: var(--signal);
  color: var(--signal-ink);
  border-color: var(--signal);
}

@media (max-width: 760px) {
  .shell-header { padding: 12px var(--gap); }
  .brand-lockup { display: none; }
  .brand-compact { display: flex; }
}

/* ---- controls ---------------------------------------------------------------------- */

.field { margin-bottom: 14px; min-width: 0; }
label { display: block; font-weight: 600; font-size: 0.92rem; margin-bottom: 4px; }
.hint { font-size: 0.85rem; color: var(--ink-soft); margin: 4px 0 0; }
.field-error { margin: 4px 0 0; font-size: 0.85rem; color: var(--tone-danger-fg); font-weight: 600; }

input[type="text"], input[type="password"], input[type="email"], input[type="search"], select {
  width: 100%;
  min-width: 0;
  padding: 8px 10px;
  font: inherit;
  color: var(--ink);
  background: var(--surface);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
}
input[aria-invalid="true"] { border-color: var(--tone-danger-fg); }
input:focus-visible, select:focus-visible, button:focus-visible, a:focus-visible, summary:focus-visible, [tabindex]:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 2px;
}

button, .btn {
  font: inherit;
  font-weight: 600;
  padding: 8px 14px;
  border-radius: var(--radius);
  border: 1px solid var(--signal);
  background: var(--signal);
  color: var(--signal-ink);
  cursor: pointer;
  text-decoration: none;
  display: inline-block;
  line-height: 1.3;
}
button.secondary, .btn-secondary {
  background: var(--surface);
  color: var(--ink);
  border-color: var(--line-strong);
}
.btn-primary { background: var(--signal); color: var(--signal-ink); border-color: var(--signal); }
.btn-small { padding: 4px 10px; font-size: 0.85rem; }
.btn-danger { background: var(--surface); color: var(--tone-danger-fg); border-color: var(--tone-danger-fg); }
button[disabled], .btn[aria-disabled="true"] { opacity: 0.6; cursor: progress; }
.link { color: var(--signal); text-decoration: underline; text-underline-offset: 2px; font-weight: 600; background: none; border: 0; padding: 0; }
a { color: var(--signal); }

.actions { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; margin-top: 6px; }

.form-row { display: grid; gap: 6px; align-content: start; min-width: 0; }
.stack-form { display: grid; gap: 4px; }
.toolbar {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: var(--gap);
  margin-bottom: var(--gap);
}
.field.checkbox label { display: flex; align-items: center; gap: 8px; font-weight: 400; }

/* ---- status vocabulary --------------------------------------------------------------- */

.state-box {
  border-radius: var(--radius);
  padding: 12px 14px;
  margin: 12px 0;
  background: var(--tone-neutral-bg);
  color: var(--tone-neutral-fg);
  border-left: 4px solid currentColor;
}
.state-title { font-weight: 600; margin-bottom: 2px; }
.state-detail { margin: 0; font-size: 0.92rem; }

[data-tone="success"] { background: var(--tone-success-bg); color: var(--tone-success-fg); }
[data-tone="warning"] { background: var(--tone-warning-bg); color: var(--tone-warning-fg); }
[data-tone="danger"] { background: var(--tone-danger-bg); color: var(--tone-danger-fg); }
[data-tone="neutral"] { background: var(--tone-neutral-bg); color: var(--tone-neutral-fg); }

.chip {
  display: inline-block;
  padding: 2px 10px;
  border-radius: 999px;
  font-size: 0.85rem;
  background: var(--tone-neutral-bg);
  color: var(--tone-neutral-fg);
}
.chip::before { content: "● "; font-size: 0.6em; vertical-align: middle; }
.chip[data-tone="success"]::before, .chip[data-tone="warning"]::before, .chip[data-tone="danger"]::before { content: "● "; }
.chip[data-tone="neutral"]::before { content: "○ "; }

.alert {
  position: relative;
  border-radius: var(--radius);
  padding: 12px 40px 12px 14px;
  margin: 0 0 var(--gap);
  border-left: 4px solid currentColor;
}
.alert-title { font-weight: 600; margin: 0 0 2px; }
.alert-detail { margin: 0; font-size: 0.92rem; }
.alert-close {
  position: absolute;
  right: 6px;
  top: 6px;
  padding: 0 8px;
  background: transparent;
  color: inherit;
  border: 0;
  font-size: 1.2rem;
  line-height: 1.4;
}

.empty-state {
  padding: 24px;
  border: 1px dashed var(--line-strong);
  border-radius: var(--radius-large);
  background: var(--surface-sunken);
  max-width: 68ch;
}
.empty-title { font-weight: 600; margin: 0 0 4px; }
.empty-detail { margin: 0; color: var(--ink-soft); }

.card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-large);
  padding: 18px 20px;
  min-width: 0;
}
.card + .card { margin-top: var(--gap); }
.card-head { display: flex; flex-wrap: wrap; align-items: baseline; justify-content: space-between; gap: 8px 16px; }
.card-head h2, .card-head h3 { margin: 0; }
.card-head p { margin: 0; }

.facts {
  display: grid;
  grid-template-columns: max-content minmax(0, 1fr);
  gap: 6px 16px;
  margin: 0 0 12px;
  font-variant-numeric: tabular-nums;
}
.facts dt { font-weight: 600; color: var(--ink-soft); }
.facts dd { margin: 0; overflow-wrap: anywhere; }
@media (max-width: 520px) { .facts { grid-template-columns: minmax(0, 1fr); gap: 2px 0; } .facts dd { margin-bottom: 8px; } }

.table { width: 100%; border-collapse: collapse; font-size: 0.92rem; }
.table th, .table td { text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--line); vertical-align: top; }
.table th { font-weight: 600; color: var(--ink-soft); white-space: nowrap; }
.table td.actions-cell { white-space: nowrap; }
.table-wrap { overflow-x: auto; min-width: 0; max-width: 100%; }
.plain-list { list-style: none; margin: 0 0 12px; padding: 0; display: grid; gap: 6px; }
.plain-list li { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; overflow-wrap: anywhere; }

details.diagnostics { margin-top: 12px; font-size: 0.9rem; color: var(--ink-soft); }
details.diagnostics summary { cursor: pointer; font-weight: 600; }
details.diagnostics > *:not(summary) { margin-top: 8px; }

.skeleton { display: inline-block; height: 1em; width: 8ch; background: var(--surface-muted); border-radius: 4px; vertical-align: middle; }

/* ---- public / signed-out ------------------------------------------------------------- */

.auth-layout {
  flex: 1;
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(320px, 440px);
  gap: 40px;
  padding: 40px 24px;
  max-width: 1120px;
  width: 100%;
  margin: 0 auto;
  align-items: start;
}
.auth-intro h1 { font-size: 1.9rem; max-width: 22ch; }
.intro-points { margin: 16px 0 0; padding-left: 0; list-style: none; display: grid; gap: 10px; max-width: 52ch; }
.intro-points li { position: relative; padding-left: 22px; color: var(--ink-soft); }
.intro-points li::before { content: "✓"; position: absolute; left: 0; color: var(--signal); font-weight: 700; }
.auth-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-large);
  padding: 22px 24px 18px;
  min-width: 0;
}
.auth-tabs { display: flex; gap: 4px; border-bottom: 1px solid var(--line); margin: 0 0 18px; }
.auth-tab {
  padding: 8px 14px;
  font-weight: 600;
  color: var(--ink-soft);
  text-decoration: none;
  border-bottom: 3px solid transparent;
  margin-bottom: -1px;
}
.auth-tab[aria-current="page"] { color: var(--ink); border-bottom-color: var(--signal); }
.auth-form h2 { font-size: 1.2rem; margin-bottom: 14px; }
.auth-switch { margin-top: 14px; }
@media (max-width: 860px) {
  .auth-layout { grid-template-columns: minmax(0, 1fr); gap: 24px; padding: 24px var(--gap); }
  .auth-intro h1 { font-size: 1.5rem; }
}

/* ---- application shell ----------------------------------------------------------------- */

.app-shell {
  flex: 1;
  display: grid;
  grid-template-columns: var(--sidebar-width) minmax(0, 1fr);
  width: 100%;
  min-height: 0;
}
.sidebar {
  background: var(--surface);
  border-right: 1px solid var(--line);
  padding: 20px 16px;
  display: flex;
  flex-direction: column;
  gap: 20px;
  min-width: 0;
}
.org-context { padding: 10px 12px; background: var(--surface-sunken); border: 1px solid var(--line); border-radius: var(--radius); }
.org-context-label { margin: 0; font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.08em; color: var(--ink-faint); }
.org-context-name { margin: 2px 0 0; font-weight: 600; overflow-wrap: anywhere; }
.org-context-role { margin: 0; font-size: 0.85rem; color: var(--ink-soft); }
.org-context-select { margin-top: 8px; font-size: 0.9rem; }
.app-nav { display: grid; gap: 2px; }
.nav-link {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 12px;
  border-radius: var(--radius);
  color: var(--ink);
  text-decoration: none;
  font-weight: 500;
}
.nav-link:hover { background: var(--surface-sunken); }
.nav-link[aria-current="page"] { background: var(--signal-soft); color: var(--signal); font-weight: 600; }
.nav-icon { width: 1.2em; text-align: center; color: var(--ink-faint); }
.nav-link[aria-current="page"] .nav-icon { color: var(--signal); }
.account-block { margin-top: auto; padding-top: 16px; border-top: 1px solid var(--line); display: grid; gap: 6px; }
.account-label { margin: 0; font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.08em; color: var(--ink-faint); }
.account-email { margin: 0 0 6px; font-size: 0.9rem; overflow-wrap: anywhere; }

.page-area { padding: 24px 32px 40px; min-width: 0; max-width: 1180px; }
.page-header { display: flex; flex-wrap: wrap; align-items: end; justify-content: space-between; gap: 12px 16px; margin-bottom: 18px; }
.page-header h1 { margin: 0; }
.page-actions { display: flex; flex-wrap: wrap; gap: 8px; }
.page { min-width: 0; }
.page > .lead { margin-bottom: 18px; }

@media (max-width: 860px) {
  .app-shell { grid-template-columns: minmax(0, 1fr); }
  .sidebar { border-right: 0; border-bottom: 1px solid var(--line); padding: 12px var(--gap); gap: 12px; }
  .app-nav { display: flex; flex-wrap: wrap; gap: 4px; }
  .nav-link { padding: 6px 10px; font-size: 0.92rem; }
  .account-block { margin-top: 0; padding-top: 10px; grid-template-columns: minmax(0, 1fr) auto; align-items: center; }
  .account-block .account-label { grid-column: 1 / -1; }
  .page-area { padding: 18px var(--gap) 32px; }
}

/* ---- dashboard ---------------------------------------------------------------------- */

.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: var(--gap); margin-bottom: 24px; }
.dash-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-large);
  padding: 16px 18px;
  display: grid;
  gap: 6px;
  align-content: start;
  min-width: 0;
}
.dash-card-label { margin: 0; font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.08em; color: var(--ink-faint); }
.dash-card-value { margin: 0; font-size: 1.35rem; font-weight: 600; font-variant-numeric: tabular-nums; overflow-wrap: anywhere; }
.dash-card-detail { margin: 0; font-size: 0.9rem; color: var(--ink-soft); }
.dash-card a { font-size: 0.9rem; }
.next-action { background: var(--signal-soft); border-radius: var(--radius-large); padding: 18px 20px; max-width: 72ch; }
.next-action h2 { margin-bottom: 6px; }

/* ---- onboarding ---------------------------------------------------------------------- */

.stepper { list-style: none; margin: 0 0 20px; padding: 0; display: flex; flex-wrap: wrap; gap: 6px 18px; }
.stepper li { display: flex; align-items: center; color: var(--ink-faint); font-size: 0.92rem; }
.step-link { display: flex; align-items: center; gap: 8px; margin: 0; padding: 2px 4px; border: 0; border-radius: var(--radius); background: transparent; color: inherit; font: inherit; cursor: pointer; }
.step-link:disabled { cursor: default; }
.step-link:focus-visible { outline: 2px solid var(--signal); outline-offset: 2px; }
.step-number {
  display: inline-flex; align-items: center; justify-content: center;
  width: 26px; height: 26px; border-radius: 50%;
  border: 1px solid var(--line-strong); font-size: 0.8rem; font-weight: 600; color: var(--ink-soft); background: var(--surface);
}
.stepper li[data-state="done"] { color: var(--ink-soft); }
.stepper li[data-state="done"] .step-number { background: var(--tone-success-bg); color: var(--tone-success-fg); border-color: var(--tone-success-fg); }
.stepper li[data-state="done"] .step-number::before { content: "✓"; }
.stepper li[data-state="done"] .step-number { font-size: 0; }
.stepper li[data-state="done"] .step-number::before { font-size: 0.8rem; }
.stepper li[data-state="current"] { color: var(--ink); font-weight: 600; }
.stepper li[data-state="current"] .step-number { background: var(--signal); color: var(--signal-ink); border-color: var(--signal); }
.onboarding-panel {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-large);
  padding: 20px 22px;
  max-width: 640px;
  display: grid;
  gap: 12px;
}
.onboarding-panel h3 { margin: 0; font-size: 1.1rem; }
.onboarding-panel .form-row, .onboarding-panel .agreement { margin: 0; }
.agreement { display: grid; gap: 8px; padding-top: 12px; border-top: 1px solid var(--line); }
.agreement .state-title { font-weight: 600; margin: 0; }

/* ---- products ------------------------------------------------------------------------ */

.product-card {
  border: 1px solid var(--line);
  border-radius: var(--radius-large);
  padding: 18px 20px;
  background: var(--surface);
  margin-bottom: var(--gap);
}
.product-fields {
  display: grid;
  grid-template-columns: max-content minmax(0, 1fr);
  gap: 6px 16px;
  margin: 12px 0 14px;
  font-variant-numeric: tabular-nums;
}
.product-fields dt { font-weight: 600; color: var(--ink-soft); }
.product-fields dd { margin: 0; overflow-wrap: anywhere; }
@media (max-width: 520px) { .product-fields { grid-template-columns: minmax(0, 1fr); gap: 2px 0; } .product-fields dd { margin-bottom: 8px; } }
.product-row-name { font-weight: 600; overflow-wrap: anywhere; }
.session { margin-top: 24px; }
.session-list { margin: 8px 0 0; padding-left: 20px; }
.session-list li { margin-bottom: 4px; overflow-wrap: anywhere; }
.session-list button { padding: 2px 8px; font-size: 0.85rem; margin-left: 8px; }

/* ---- marketplace ------------------------------------------------------------------------ */

.marketplace { display: grid; gap: var(--gap); }
.marketplace > * { min-width: 0; }
.marketplace h3 { font-size: 1rem; }
.status-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-left: 4px solid var(--signal);
  border-radius: var(--radius-large);
  padding: 14px 18px;
}
.status-card[data-tone="warning"] { border-left-color: var(--tone-warning-fg); background: var(--surface); color: var(--ink); }
.status-card[data-tone="success"] { border-left-color: var(--tone-success-fg); background: var(--surface); color: var(--ink); }
.status-card[data-tone="neutral"] { border-left-color: var(--line-strong); background: var(--surface); color: var(--ink); }
.status-card-label { margin: 0; font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.08em; color: var(--ink-faint); }
.status-card-title { margin: 2px 0 0; font-weight: 600; font-size: 1.05rem; }
.status-card-detail { margin: 4px 0 0; color: var(--ink-soft); }
.mk-connection { display: grid; gap: 10px; min-width: 0; }
.marketplace .form-row input, .marketplace .form-row select, .marketplace .stack-form input, .marketplace .stack-form select { max-width: 420px; }
.mk-snapshot { min-width: 0; display: grid; gap: 8px; }
.mk-items { width: 100%; border-collapse: collapse; font-size: 0.9rem; }
.mk-items th, .mk-items td { text-align: left; padding: 6px 10px; border-bottom: 1px solid var(--line); vertical-align: top; }
.mk-items th { font-weight: 600; color: var(--ink-soft); white-space: nowrap; }
.mk-items tr[data-presence="ABSENT"] td { color: var(--ink-soft); text-decoration: line-through; }
.marketplace[data-busy="1"] { opacity: 0.85; }

/* Marketplace <-> local Catalog mapping: the relation state is words in a chip, the
   actions are explicit buttons, and the link/import panel is a bounded block below the
   snapshot table -- the marketplace row itself never becomes an editable product. */
.mk-map-cell { min-width: 220px; }
.mk-map-cell .chip { white-space: nowrap; }
.mk-map-product { display: block; font-size: 0.9rem; }
.mk-map-explain { display: block; font-size: 0.82rem; color: var(--ink-soft); margin-top: 2px; }
.mk-map-actions { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 6px; }
.mk-map-actions button { padding: 2px 8px; font-size: 0.85rem; }
.mk-map-panel {
  margin-top: 12px;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface-sunken);
  display: grid;
  gap: 10px;
  min-width: 0;
}
.mk-map-panel h3 { margin: 0; }
.mk-map-panel input { max-width: 420px; }
.mk-map-results { list-style: none; margin: 0; padding: 0; display: grid; gap: 6px; }
.mk-map-results li { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 8px; overflow-wrap: anywhere; }
.mk-map-results button { padding: 2px 8px; font-size: 0.85rem; }
.mk-import-preview { display: grid; gap: 8px; }

/* ---- modal ----------------------------------------------------------------------------- */

.modal { border: 1px solid var(--line); border-radius: var(--radius-large); padding: 22px 24px; max-width: min(92vw, 460px); background: var(--surface); color: var(--ink); }
.modal::backdrop { background: rgba(27, 34, 48, 0.45); }
.modal h2 { font-size: 1.1rem; }

/* ---- footer ---------------------------------------------------------------------------- */

.shell-footer {
  padding: 12px 24px;
  border-top: 1px solid var(--line);
  color: var(--ink-soft);
  font-size: 0.85rem;
  background: var(--surface);
}

@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; animation: none !important; }
}