/* Picante Chat — neutral platform look.
   All theme decisions live in the token block below (tenant theming hook, per L-D3):
   a tenant skin overrides these custom properties and nothing else. No brand assets. */

:root {
  /* palette */
  --color-bg: #f6f5f3;
  --color-surface: #ffffff;
  --color-surface-alt: #efedea;
  --color-border: #d8d5d0;
  --color-text: #1f2328;
  --color-text-muted: #5b6069;
  --color-accent: #b4451f;         /* warm neutral accent; tenant hook */
  --color-accent-contrast: #ffffff;
  --color-bubble-user: #1f2328;
  --color-bubble-user-text: #f6f5f3;
  --color-bubble-assistant: #ffffff;
  --color-danger: #b3261e;
  --color-danger-bg: #fdeceb;
  --color-warn-bg: #fdf3e0;
  --color-warn-text: #7a5210;
  --color-ok: #1d7a46;
  --color-focus: #2258c4;

  /* type & shape */
  --font-body: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --font-size-base: 1rem;
  --line-height-base: 1.5;
  --radius-bubble: 1.125rem;
  --radius-control: 0.625rem;
  --radius-card: 0.75rem;
  --shadow-card: 0 1px 3px rgba(0, 0, 0, 0.08);

  /* spacing & layout */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.5rem;
  --thread-max-width: 44rem;

  /* motion (zeroed under prefers-reduced-motion) */
  --motion-fast: 150ms;
  --motion-spin: 900ms;
}

@media (prefers-color-scheme: dark) {
  :root {
    --color-bg: #16181c;
    --color-surface: #1f2228;
    --color-surface-alt: #262a31;
    --color-border: #3a3f47;
    --color-text: #e8e9eb;
    --color-text-muted: #a3a9b3;
    --color-accent: #e0703f;
    --color-accent-contrast: #1c1006;
    --color-bubble-user: #e8e9eb;
    --color-bubble-user-text: #16181c;
    --color-bubble-assistant: #1f2228;
    --color-danger: #f2857c;
    --color-danger-bg: #3a2220;
    --color-warn-bg: #383018;
    --color-warn-text: #eccd8a;
    --color-ok: #6fce9a;
    --color-focus: #8db1f5;
    --shadow-card: 0 1px 3px rgba(0, 0, 0, 0.4);
  }
}

@media (prefers-reduced-motion: reduce) {
  :root { --motion-fast: 0ms; --motion-spin: 0ms; }
  * { animation: none !important; transition: none !important; scroll-behavior: auto !important; }
}

* { box-sizing: border-box; }

html, body { height: 100%; }

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: var(--font-size-base);
  line-height: var(--line-height-base);
  color: var(--color-text);
  background: var(--color-bg);
}

.visually-hidden {
  position: absolute; width: 1px; height: 1px;
  clip-path: inset(50%); overflow: hidden; white-space: nowrap;
}

.app {
  display: flex;
  flex-direction: column;
  height: 100dvh;
  max-width: var(--thread-max-width);
  margin: 0 auto;
}

/* header */
.app-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  border-bottom: 1px solid var(--color-border);
  background: var(--color-surface);
}

.app-header h1 { margin: 0; font-size: 1.125rem; line-height: 1.2; }
.app-tagline { margin: 0; font-size: 0.78rem; color: var(--color-text-muted); }
.app-header-status { display: flex; align-items: center; gap: var(--space-2); }

.status-pill {
  font-size: 0.75rem;
  padding: 0.2rem 0.6rem;
  border-radius: 999px;
  border: 1px solid var(--color-border);
  background: var(--color-surface-alt);
  color: var(--color-text-muted);
  white-space: nowrap;
}
.status-pill[data-state="online"] { color: var(--color-ok); border-color: currentColor; }
.status-pill[data-state="limited"] { color: var(--color-warn-text); background: var(--color-warn-bg); border-color: transparent; }
.status-pill[data-state="offline"] { color: var(--color-danger); background: var(--color-danger-bg); border-color: transparent; }

/* buttons */
.btn {
  font: inherit;
  font-size: 0.875rem;
  border-radius: var(--radius-control);
  border: 1px solid transparent;
  padding: 0.45rem 0.9rem;
  cursor: pointer;
  /* AX-01: every touch target ≥44px (WO-3e U6) */
  min-height: 2.75rem;
  min-width: 2.75rem;
  transition: background-color var(--motion-fast) ease;
}
.btn:focus-visible, .suggestion:focus-visible, textarea:focus-visible, input:focus-visible {
  outline: 2px solid var(--color-focus);
  outline-offset: 2px;
}
.btn-primary { background: var(--color-accent); color: var(--color-accent-contrast); }
.btn-primary:hover:not(:disabled) { filter: brightness(1.08); }
.btn-primary:disabled { opacity: 0.55; cursor: default; }
.btn-ghost { background: transparent; color: var(--color-text); border-color: var(--color-border); }
.btn-ghost:hover { background: var(--color-surface-alt); }
.btn-inline {
  background: var(--color-surface);
  border-color: var(--color-border);
  color: var(--color-text);
  font-size: 0.8125rem;
  padding: 0.3rem 0.75rem;
  min-height: 2.75rem; /* AX-01 */
  min-width: 2.75rem;
}
.btn-inline:hover { background: var(--color-surface-alt); }

/* notices */
.notice-area { display: grid; gap: 1px; }
.notice {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  padding: var(--space-2) var(--space-4);
  font-size: 0.8125rem;
}
.notice p { margin: 0; }
.notice .btn { flex: none; } /* keep the action at natural width; let the text wrap instead */
.notice[data-kind="warn"] { background: var(--color-warn-bg); color: var(--color-warn-text); }
.notice[data-kind="error"] { background: var(--color-danger-bg); color: var(--color-danger); }

/* thread */
.thread-wrap {
  flex: 1;
  overflow-y: auto;
  padding: var(--space-4);
  scroll-behavior: smooth;
}

.thread { display: flex; flex-direction: column; gap: var(--space-3); }

.msg { display: flex; flex-direction: column; max-width: 88%; }
.msg-user { align-self: flex-end; align-items: flex-end; }
.msg-assistant, .msg-system { align-self: flex-start; align-items: flex-start; }

.msg-bubble {
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-bubble);
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}
.msg-user .msg-bubble {
  background: var(--color-bubble-user);
  color: var(--color-bubble-user-text);
  border-bottom-right-radius: var(--space-1);
}
.msg-assistant .msg-bubble {
  background: var(--color-bubble-assistant);
  border: 1px solid var(--color-border);
  border-bottom-left-radius: var(--space-1);
}
.msg-system .msg-bubble {
  background: var(--color-warn-bg);
  color: var(--color-warn-text);
  font-size: 0.875rem;
}
.msg-error .msg-bubble {
  background: var(--color-danger-bg);
  color: var(--color-danger);
  border: 1px solid transparent;
}

.msg-meta {
  font-size: 0.7rem;
  color: var(--color-text-muted);
  margin-top: var(--space-1);
  padding: 0 var(--space-2);
}

.msg-actions { display: flex; flex-wrap: wrap; gap: var(--space-2); margin-top: var(--space-2); }

/* pending / spinner */
.msg-pending .msg-bubble { display: flex; align-items: center; gap: var(--space-2); color: var(--color-text-muted); }
.spinner {
  width: 1rem; height: 1rem;
  border-radius: 50%;
  border: 2px solid var(--color-border);
  border-top-color: var(--color-accent);
  animation: spin var(--motion-spin) linear infinite;
  flex: none;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* event cards */
.event-cards {
  display: grid;
  gap: var(--space-2);
  margin-top: var(--space-2);
  width: 100%;
}
.event-card {
  display: block;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-card);
  padding: var(--space-3) var(--space-4);
  text-decoration: none;
  color: inherit;
  transition: border-color var(--motion-fast) ease;
}
.event-card:hover, .event-card:focus-visible { border-color: var(--color-accent); }
.event-card-title { margin: 0; font-size: 0.9375rem; font-weight: 600; }
.event-card-line { margin: var(--space-1) 0 0; font-size: 0.8125rem; color: var(--color-text-muted); }
.event-card-link { font-size: 0.8125rem; color: var(--color-accent); font-weight: 500; }

/* empty state */
.empty-state {
  max-width: 34rem;
  margin: 12vh auto 0;
  text-align: center;
  padding: 0 var(--space-4);
}
.empty-state h2 { font-size: 1.25rem; margin: 0 0 var(--space-2); }
.empty-state p { color: var(--color-text-muted); font-size: 0.9375rem; margin: 0 0 var(--space-4); }
.empty-state-hint { font-size: 0.8125rem; }
.suggestions { display: flex; flex-wrap: wrap; justify-content: center; gap: var(--space-2); margin-bottom: var(--space-4); }
.suggestion {
  font: inherit;
  font-size: 0.875rem;
  padding: 0.5rem 0.9rem;
  border-radius: 999px;
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  color: var(--color-text);
  cursor: pointer;
  min-height: 2.75rem; /* AX-01 */
  min-width: 2.75rem;
}
.suggestion:hover:not(:disabled) { border-color: var(--color-accent); }
.suggestion:disabled { opacity: 0.55; cursor: default; }

/* composer */
.composer-wrap {
  border-top: 1px solid var(--color-border);
  background: var(--color-surface);
  padding: var(--space-3) var(--space-4) calc(var(--space-2) + env(safe-area-inset-bottom, 0px));
}
.composer { display: flex; gap: var(--space-2); align-items: flex-end; }
.composer textarea {
  flex: 1;
  font: inherit;
  color: inherit;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-control);
  padding: 0.55rem 0.75rem;
  resize: none;
  max-height: 9rem;
  min-height: 2.75rem; /* AX-01 */
}
.composer textarea:disabled { opacity: 0.6; }
.composer-hint {
  margin: var(--space-1) 0 0;
  font-size: 0.7rem;
  color: var(--color-text-muted);
  text-align: right;
}
@media (max-width: 40rem) {
  .composer-hint { display: none; }
  .msg { max-width: 94%; }
}

/* auth dialog */
.auth-dialog {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  background: var(--color-surface);
  color: var(--color-text);
  padding: var(--space-5);
  max-width: 22rem;
  width: calc(100vw - 2rem);
}
.auth-dialog::backdrop { background: rgba(0, 0, 0, 0.45); }
.auth-dialog h2 { margin: 0 0 var(--space-2); font-size: 1.125rem; }
.auth-dialog p { margin: 0 0 var(--space-3); font-size: 0.8125rem; color: var(--color-text-muted); }
.auth-dialog label { display: block; font-size: 0.8125rem; margin-bottom: var(--space-1); }
.auth-dialog input {
  width: 100%;
  font: inherit;
  min-height: 2.75rem; /* AX-01 */
  padding: 0.5rem 0.65rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-control);
  background: var(--color-bg);
  color: inherit;
  margin-bottom: var(--space-4);
}
.auth-dialog-actions { display: flex; justify-content: flex-end; gap: var(--space-2); }