/* ============================================================
   WhyNot Design System — Component Styles
   ------------------------------------------------------------
   Utility classes that the Lit web components render to. These
   are also consumable directly from any HTML (no JS required)
   for the "Layer 1 only" use case — see MultiFrameworkSupport.md.
   ============================================================ */

/* ====== Custom-element display defaults ======
 * For shadow-DOM components, the wn-* host has display: inline by default.
 * Set sensible defaults so layout works without the consumer specifying them.
 */
wn-eyebrow, wn-tag, wn-stage-dot, wn-phase-dot, wn-stamp, wn-icon,
wn-search-input, wn-button { display: inline-block; }

wn-card, wn-modal, wn-top-nav, wn-sidebar, wn-page-header,
wn-pipeline, wn-prototype-card, wn-field-row, wn-breadcrumb,
wn-table, wn-banner, wn-empty-state,
wn-input, wn-textarea, wn-select { display: block; }

wn-toast-region { display: block; }
wn-toast { display: block; }

wn-sidebar-group, wn-sidebar-item { display: block; }
wn-table-row, wn-table-cell { display: contents; }

/* host hidden state — needed because shadow-DOM components don't inherit
 * `[hidden]` semantics in light DOM. Lit's host attribute reflection
 * handles attributes, but `hidden` on the host itself should still work. */
[hidden] { display: none !important; }

/* ====== Buttons ====== */
.wn-btn {
  font: 500 13px var(--ff-sans);
  letter-spacing: -0.005em;
  padding: 9px 16px;
  border-radius: var(--r-2);
  border: 1px solid var(--border);
  background: var(--paper);
  color: var(--ink);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  white-space: nowrap;
  transition: background 120ms ease, border-color 120ms ease, color 120ms ease;
  text-decoration: none;
  line-height: 1.2;
}
.wn-btn:hover { border-color: var(--ink); }
.wn-btn:focus-visible { outline: 2px solid var(--ink); outline-offset: 2px; }
.wn-btn:active { background: var(--bg-3); }
.wn-btn[disabled], .wn-btn.is-disabled {
  color: var(--ink-5); border-color: var(--border); cursor: not-allowed; background: var(--paper);
}

.wn-btn--primary { background: var(--ink); color: var(--paper); border-color: var(--ink); }
.wn-btn--primary:hover { background: var(--ink-2); border-color: var(--ink-2); }
.wn-btn--primary:active { background: var(--ink); }
.wn-btn--primary[disabled], .wn-btn--primary.is-disabled {
  background: var(--ink-5); border-color: var(--ink-5); color: var(--paper);
}

.wn-btn--ghost { background: transparent; border-color: transparent; padding: 7px 10px; }
.wn-btn--ghost:hover { background: var(--bg-3); border-color: transparent; }

.wn-btn--danger { background: var(--paper); color: var(--ink); border-color: var(--ink); }

.wn-btn--sm { padding: 5px 10px; font-size: 12px; }
.wn-btn--lg { padding: 12px 20px; font-size: 14px; }

.wn-btn__icon { width: 14px; height: 14px; flex: none; }
.wn-btn--lg .wn-btn__icon { width: 16px; height: 16px; }

/* ====== Eyebrows & labels ====== */
.wn-eyebrow {
  font: 500 11px/1.2 var(--ff-mono);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--fg-3);
  display: inline-block;
}
.wn-eyebrow--strong { color: var(--fg-1); }

/* ====== Tags ====== */
.wn-tag {
  font: 500 10px/1 var(--ff-mono);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 5px 10px;
  border-radius: var(--r-pill);
  border: 1px solid var(--border);
  color: var(--fg-2);
  background: var(--paper);
  display: inline-block;
  white-space: nowrap;
}
.wn-tag--active { background: var(--ink); color: var(--paper); border-color: var(--ink); }
.wn-tag--draft  { background: var(--hi);  color: var(--hi-ink); border-color: transparent; }

/* ====== Stage / Phase dots ====== */
.wn-dot {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font: 500 10px/1 var(--ff-mono);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--fg-2);
}
.wn-dot__bullet { width: 8px; height: 8px; border-radius: 999px; background: var(--ink); flex: none; }

/* signal levels (S0–S4) */
.wn-stage-dot--s0 .wn-dot__bullet { background: var(--status-raw); }
.wn-stage-dot--s1 .wn-dot__bullet { background: var(--status-weak); }
.wn-stage-dot--s2 .wn-dot__bullet { background: var(--status-medium); }
.wn-stage-dot--s3 .wn-dot__bullet { background: var(--status-strong); }
.wn-stage-dot--s4 .wn-dot__bullet { background: var(--status-commercial); }

/* phase states (todo / active / done / warn) — numbered phases, distinct from signal */
.wn-phase-dot__bullet {
  width: 18px; height: 18px; border-radius: 999px;
  border: 1px solid var(--border-strong);
  background: var(--paper);
  display: inline-flex; align-items: center; justify-content: center;
  font: 500 10px/1 var(--ff-mono); color: var(--fg-3);
  flex: none;
}
.wn-phase-dot--todo   .wn-phase-dot__bullet { border-color: var(--border-strong); color: var(--fg-3); background: var(--paper); }
.wn-phase-dot--active .wn-phase-dot__bullet { border-color: var(--ink); color: var(--ink); background: var(--paper); box-shadow: 0 0 0 3px rgba(10,10,10,0.06); }
.wn-phase-dot--done   .wn-phase-dot__bullet { border-color: var(--ink); color: var(--paper); background: var(--ink); }
.wn-phase-dot--warn   .wn-phase-dot__bullet { border-color: var(--hi-2); color: var(--hi-ink); background: var(--hi); }

/* ====== Stamp ====== */
.wn-stamp {
  display: inline-block;
  background: var(--hi);
  color: var(--hi-ink);
  padding: 5px 10px 3px;
  font: 500 10px/1 var(--ff-mono);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  transform: rotate(-1.5deg);
}

/* ====== Icon ====== */
.wn-icon { stroke-width: 1.5; stroke: currentColor; fill: none; display: inline-block; vertical-align: middle; }
.wn-icon--sm { width: 14px; height: 14px; }
.wn-icon--md { width: 16px; height: 16px; }
.wn-icon--lg { width: 20px; height: 20px; }
.wn-icon--xl { width: 24px; height: 24px; }

/* ====== Card ====== */
.wn-card {
  background: var(--paper);
  border: 1px solid var(--border);
  border-radius: var(--r-2);
  padding: var(--sp-5);
  display: flex;
  flex-direction: column;
  gap: var(--sp-3);
  position: relative;
}
.wn-card--inset    { background: var(--paper-2); border-color: var(--border); }
.wn-card--recessed { background: var(--paper-3); }
.wn-card--lg       { padding: var(--sp-6); border-radius: var(--r-3); }
.wn-card--sm       { padding: var(--sp-4); gap: var(--sp-2); }
.wn-card--clickable { cursor: pointer; transition: border-color 120ms ease; }
.wn-card--clickable:hover { border-color: var(--ink); }
.wn-card--clickable:hover::before {
  content: ""; position: absolute; left: -1px; top: -1px; bottom: -1px;
  width: 2px; background: var(--ink); border-radius: 2px 0 0 2px;
}
.wn-card__head { display: flex; justify-content: space-between; align-items: baseline; gap: var(--sp-3); }
.wn-card__title { font: 500 17px/1.35 var(--ff-sans); margin: 4px 0 8px; color: var(--fg-1); }
.wn-card__foot {
  display: flex; justify-content: space-between; gap: var(--sp-3);
  padding-top: var(--sp-3); margin-top: 4px;
  border-top: 1px solid var(--border-soft);
  font: 500 11px var(--ff-mono); letter-spacing: 0.06em; text-transform: uppercase;
  color: var(--fg-3);
}

/* ====== Field row (label + value, 3-col grid) ====== */
.wn-field-row {
  display: grid;
  grid-template-columns: 200px 1fr auto;
  gap: var(--sp-4) var(--sp-5);
  padding: var(--sp-3) 0;
  border-bottom: 1px solid var(--border-soft);
  align-items: baseline;
}
.wn-field-row:last-child { border-bottom: 0; }
.wn-field-row__label {
  font: 500 11px/1.5 var(--ff-mono);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--fg-3);
}
.wn-field-row__value { font: 400 15px/1.55 var(--ff-sans); color: var(--fg-1); }
.wn-field-row__aside { font: 400 12px var(--ff-mono); color: var(--fg-3); text-align: right; }
.wn-field-row--stacked { grid-template-columns: 1fr; gap: 6px; }
.wn-field-row--narrow  { grid-template-columns: 120px 1fr; }

/* ====== Form inputs ====== */
.wn-form-label {
  font: 500 11px/1 var(--ff-mono);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--fg-3);
  display: block;
  margin-bottom: 6px;
}
.wn-input, .wn-textarea, .wn-select {
  font: 400 14px var(--ff-sans);
  padding: 10px 12px;
  border: 1px solid var(--border);
  background: var(--paper);
  border-radius: var(--r-1);
  color: var(--fg-1);
  outline: none;
  width: 100%;
  transition: border-color 120ms ease;
  box-sizing: border-box;
}
.wn-input:hover, .wn-textarea:hover, .wn-select:hover { border-color: var(--border-strong); }
.wn-input:focus, .wn-textarea:focus, .wn-select:focus { border-color: var(--ink); }
.wn-input::placeholder, .wn-textarea::placeholder { color: var(--ink-5); }
.wn-input[disabled], .wn-textarea[disabled], .wn-select[disabled] {
  background: var(--paper-2); color: var(--fg-3); cursor: not-allowed;
}
.wn-textarea { resize: vertical; min-height: 96px; font-family: var(--ff-sans); }
.wn-select {
  appearance: none; -webkit-appearance: none;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='10' height='6' viewBox='0 0 10 6' fill='none' stroke='%235C5C5C' stroke-width='1.5'><path d='M1 1l4 4 4-4'/></svg>");
  background-repeat: no-repeat;
  background-position: right 12px center;
  padding-right: 32px;
}

.wn-input--error, .wn-textarea--error, .wn-select--error {
  border-color: var(--ink); border-bottom-width: 2px;
}
.wn-form-help { font: 400 11px var(--ff-mono); color: var(--fg-3); margin-top: 6px; display: block; }
.wn-form-error { font: 400 11px var(--ff-mono); color: var(--ink); margin-top: 6px; display: block; }

/* Search input — extracted from TopNav, also usable standalone */
.wn-search {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  border: 1px solid var(--border);
  padding: 6px 10px;
  border-radius: var(--r-1);
  background: var(--paper);
  color: var(--fg-3);
  font: 400 12px var(--ff-mono);
  min-width: 200px;
  transition: border-color 120ms ease;
}
.wn-search:focus-within { border-color: var(--ink); }
.wn-search input {
  border: 0; outline: 0; background: none; flex: 1;
  font: inherit; color: var(--fg-1); padding: 0;
}
.wn-search input::placeholder { color: var(--ink-5); }
.wn-search__kbd {
  padding: 1px 5px;
  border: 1px solid var(--border);
  border-radius: 2px;
  font-size: 10px;
  color: var(--fg-3);
}

/* ====== Breadcrumb ====== */
.wn-breadcrumb {
  display: flex; flex-wrap: wrap; align-items: center;
  gap: 6px;
  font: 400 12px/1.5 var(--ff-mono);
  color: var(--fg-3);
  margin-bottom: var(--sp-4);
}
.wn-breadcrumb a {
  color: var(--fg-2);
  text-decoration: none;
  padding: 2px 0;
  border-bottom: 1px solid transparent;
  transition: border-color 120ms ease, color 120ms ease;
}
.wn-breadcrumb a:hover { color: var(--fg-1); border-bottom-color: var(--border-strong); }
.wn-breadcrumb__sep { color: var(--ink-5); user-select: none; }
.wn-breadcrumb__current { color: var(--fg-1); }

/* ====== Modal / Dialog ====== */
.wn-modal__backdrop {
  position: fixed; inset: 0;
  background: rgba(10, 10, 10, 0.40);
  display: flex; align-items: center; justify-content: center;
  z-index: 100;
  padding: var(--sp-5);
}
.wn-modal__panel {
  background: var(--paper);
  border-radius: var(--r-3);
  box-shadow: var(--shadow-3);
  max-width: 560px; width: 100%;
  max-height: calc(100vh - 64px);
  display: flex; flex-direction: column;
  overflow: hidden;
}
.wn-modal__head {
  padding: var(--sp-5) var(--sp-6) var(--sp-4);
  border-bottom: 1px solid var(--border);
  display: flex; align-items: flex-start; justify-content: space-between; gap: var(--sp-4);
}
.wn-modal__title { font: 500 20px/1.25 var(--ff-sans); margin: 0; color: var(--fg-1); }
.wn-modal__close {
  background: none; border: 0; cursor: pointer; padding: 4px;
  color: var(--fg-3); border-radius: var(--r-1);
  transition: color 120ms ease;
}
.wn-modal__close:hover { color: var(--fg-1); }
.wn-modal__body {
  padding: var(--sp-5) var(--sp-6);
  overflow-y: auto;
  flex: 1;
  font: 400 15px/1.6 var(--ff-sans);
  color: var(--fg-1);
}
.wn-modal__foot {
  padding: var(--sp-4) var(--sp-6) var(--sp-5);
  border-top: 1px solid var(--border);
  display: flex; justify-content: flex-end; gap: var(--sp-2);
}

/* ====== Table ======
 * Note: shadow-DOM-rendered rows can't be children of a real <table> (the
 * HTML table model rejects unknown elements between <table> and <tr>). The
 * <wn-table> component therefore renders a CSS-grid imitation. For real
 * <table> markup (Django QuerySet rendering, etc.) use these classes
 * directly on <table>/<tr>/<td> elements — see also the .wn-table--native
 * variant below.
 */

/* CSS-grid imitation (default <wn-table>) */
.wn-table {
  width: 100%;
  font-size: var(--fs-sm);
  display: flex;
  flex-direction: column;
}
.wn-table__thead { border-bottom: 1px solid var(--border); }
.wn-table__tbody { display: flex; flex-direction: column; }
.wn-table__tr {
  display: grid;
  gap: var(--sp-4);
  padding: var(--sp-3) var(--sp-4);
  border-bottom: 1px solid var(--border-soft);
  align-items: baseline;
}
.wn-table__tr:last-child { border-bottom: 0; }
.wn-table__tr--head { border-bottom: 0; padding: var(--sp-3) var(--sp-4); }
.wn-table__th {
  font: 500 11px/1.2 var(--ff-mono);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--fg-3);
}
.wn-table__td {
  color: var(--fg-1);
  line-height: 1.5;
  font-size: var(--fs-sm);
}
.wn-table--compact .wn-table__tr { padding: var(--sp-2) var(--sp-3); }
.wn-table__cell--mono { font-family: var(--ff-mono); color: var(--fg-2); font-size: 12px; }
.wn-table__cell--meta { color: var(--fg-3); font: 400 12px var(--ff-mono); }
.wn-table__cell--right { text-align: right; }

/* Native <table> variant — for Django QuerySet rendering etc. */
.wn-table--native {
  border-collapse: collapse;
  display: table;
}
.wn-table--native thead th {
  text-align: left;
  padding: var(--sp-3) var(--sp-4);
  border-bottom: 1px solid var(--border);
  font: 500 11px/1.2 var(--ff-mono);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--fg-3);
}
.wn-table--native tbody td {
  padding: var(--sp-4);
  border-bottom: 1px solid var(--border-soft);
  vertical-align: top;
  color: var(--fg-1);
  font-size: var(--fs-sm);
  line-height: 1.5;
}
.wn-table--native tbody tr:hover { background: var(--paper-2); }
.wn-table--native tbody tr:last-child td { border-bottom: 0; }

/* ====== Banner / Toast (success / info / warn) ====== */
.wn-banner {
  display: flex;
  align-items: flex-start;
  gap: var(--sp-3);
  padding: var(--sp-3) var(--sp-4);
  border: 1px solid var(--border);
  background: var(--paper);
  border-radius: var(--r-2);
  font: 400 14px/1.5 var(--ff-sans);
  color: var(--fg-1);
  position: relative;
}
.wn-banner__icon { color: var(--fg-2); flex: none; padding-top: 2px; }
.wn-banner__body { flex: 1; }
.wn-banner__title {
  font: 500 11px/1.2 var(--ff-mono);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--fg-3);
  margin: 0 0 4px;
}
.wn-banner__dismiss {
  background: none; border: 0; cursor: pointer;
  color: var(--fg-3); padding: 4px;
}
.wn-banner__dismiss:hover { color: var(--fg-1); }
.wn-banner--success { border-left: 2px solid var(--ink); }
.wn-banner--warn    { border-left: 2px solid var(--hi-2); background: #FFFCEB; }
.wn-banner--error   { border-left: 2px solid var(--ink); background: var(--paper); }
.wn-banner--info    { border-left: 2px solid var(--border-strong); }

.wn-toast-region {
  position: fixed;
  bottom: var(--sp-5); right: var(--sp-5);
  display: flex; flex-direction: column; gap: var(--sp-2);
  z-index: 200;
  max-width: 380px;
}
.wn-toast { box-shadow: var(--shadow-3); }

/* ====== Empty state ====== */
.wn-empty {
  border: 1px dashed var(--border-strong);
  border-radius: var(--r-2);
  padding: var(--sp-7);
  display: flex; flex-direction: column; align-items: center;
  gap: var(--sp-2);
  text-align: center;
  color: var(--fg-3);
}
.wn-empty__icon { color: var(--fg-3); margin-bottom: var(--sp-2); }
.wn-empty__title { font: 500 14px var(--ff-sans); color: var(--fg-2); margin: 0; }
.wn-empty__body { font: 400 13px/1.5 var(--ff-sans); color: var(--fg-3); max-width: 40ch; margin: 0; }
.wn-empty__cta { margin-top: var(--sp-2); }

/* ====== Top navigation ====== */
.wn-topnav {
  height: 56px;
  background: rgba(255, 255, 255, 0.92);
  border-bottom: 1px solid var(--border);
  display: flex; align-items: center;
  gap: var(--sp-6);
  padding: 0 var(--sp-5);
  position: sticky; top: 0; z-index: 10;
}
.wn-topnav__brand { display: flex; align-items: center; gap: 10px; font: 500 14px var(--ff-sans); }
.wn-topnav__brand img { width: 22px; height: 22px; }
.wn-topnav__brand-slug { font-family: var(--ff-mono); font-size: 12px; color: var(--fg-3); letter-spacing: 0.04em; }
.wn-topnav__links { display: flex; gap: 22px; }
.wn-topnav__link {
  font: 500 13px var(--ff-sans);
  color: var(--fg-2);
  text-decoration: none;
  padding: 6px 0;
  border-bottom: 1px solid transparent;
  transition: color 120ms ease, border-color 120ms ease;
}
.wn-topnav__link:hover { color: var(--fg-1); }
.wn-topnav__link--active { color: var(--fg-1); border-bottom-color: var(--ink); }
.wn-topnav__right { margin-left: auto; display: flex; align-items: center; gap: var(--sp-3); }

/* ====== Sidebar ====== */
.wn-sidebar {
  width: 240px;
  flex: none;
  background: var(--paper-2);
  border-right: 1px solid var(--border);
  padding: var(--sp-5) var(--sp-4);
  display: flex; flex-direction: column; gap: var(--sp-5);
  height: calc(100vh - 56px);
  position: sticky; top: 56px;
  overflow-y: auto;
}
.wn-sidebar__group { display: flex; flex-direction: column; gap: 8px; }
.wn-sidebar__group-label { padding-left: 12px; }
.wn-sidebar__item {
  display: flex; align-items: center; gap: 10px;
  padding: 8px 12px;
  border-radius: 4px;
  color: var(--fg-2);
  font: 500 13px var(--ff-sans);
  cursor: pointer; text-decoration: none;
  transition: background 120ms ease, color 120ms ease;
}
.wn-sidebar__item:hover { color: var(--fg-1); }
.wn-sidebar__item--active {
  color: var(--fg-1); background: var(--paper);
  box-shadow: 0 0 0 1px var(--border) inset;
}
.wn-sidebar__item--doc { font-family: var(--ff-mono); font-size: 12px; }
.wn-sidebar__count { margin-left: auto; font: 400 11px var(--ff-mono); color: var(--fg-3); }
.wn-sidebar__footer { margin-top: auto; padding-top: var(--sp-3); border-top: 1px solid var(--border); }
.wn-sidebar__activation {
  display: flex; align-items: center; gap: 8px; padding: 6px 12px;
  font: 500 11px var(--ff-mono); letter-spacing: 0.06em; text-transform: uppercase;
  color: var(--fg-2);
}
.wn-sidebar__activation-dot { width: 6px; height: 6px; border-radius: 999px; background: var(--hi-2); }

/* ====== Page header ====== */
.wn-page-header {
  margin-bottom: var(--sp-6);
  display: flex; flex-direction: column; gap: 8px;
}
.wn-page-header__row { display: flex; align-items: flex-end; gap: var(--sp-5); }
.wn-page-header__title {
  font: 500 32px/1.15 var(--ff-sans);
  letter-spacing: -0.015em;
  margin: 0; flex: 1; color: var(--fg-1);
}
.wn-page-header__actions { display: flex; gap: 8px; flex-wrap: wrap; }
.wn-page-header__lede {
  font: 400 16px/1.55 var(--ff-sans);
  color: var(--fg-2);
  margin: 0;
  max-width: 60ch;
}

/* ====== Pipeline ====== */
.wn-pipeline {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 0;
  position: relative;
  margin: 0 0 var(--sp-6);
}
.wn-pipeline__stage {
  padding: 10px 12px 14px;
  border-top: 2px solid var(--border);
  display: flex; flex-direction: column; gap: 4px;
  position: relative;
}
.wn-pipeline__stage--done   { border-top-color: var(--ink); }
.wn-pipeline__stage--active { border-top-color: var(--hi-2); }
.wn-pipeline__num {
  font: 500 10px/1 var(--ff-mono); letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--fg-3);
}
.wn-pipeline__stage--done .wn-pipeline__num,
.wn-pipeline__stage--active .wn-pipeline__num { color: var(--fg-1); }
.wn-pipeline__name { font: 500 14px/1.25 var(--ff-sans); color: var(--fg-1); }
.wn-pipeline__stage--pending .wn-pipeline__name { color: var(--fg-3); }
.wn-pipeline__meta { font: 400 11px/1.35 var(--ff-mono); color: var(--fg-3); }
.wn-pipeline__arrow {
  position: absolute; top: -8px; right: -7px;
  font: 400 14px var(--ff-mono); color: var(--ink-5);
}
.wn-pipeline__stage--done .wn-pipeline__arrow,
.wn-pipeline__stage--active .wn-pipeline__arrow { color: var(--ink); }

/* ====== Prototype card (combined card variant) ====== */
.wn-prototype-card { /* extends .wn-card */ }
.wn-prototype-card__qrow {
  display: grid; grid-template-columns: 110px 1fr; gap: 6px 12px;
  font-size: 13px; color: var(--fg-1);
}
.wn-prototype-card__qkey {
  font: 500 11px/1.5 var(--ff-mono);
  letter-spacing: 0.06em; text-transform: uppercase;
  color: var(--fg-3);
}
.wn-prototype-card__qval { line-height: 1.45; }

/* ====== Layout helpers ====== */
.wn-main { padding: 40px 48px 80px; max-width: 1180px; }
.wn-app  { display: grid; grid-template-columns: 240px 1fr; min-height: 100vh; }