/* Tokens: the owner's portfolio palette, dark by default. Contrast (WCAG AA, computed 2026-10-22): paper on ink
   14.04 / 11.40 (dark / light), paper-dim on ink 8.12 / 6.06, brass on ink 4.74 / 4.56. Brass is used only on ink,
   input borders use paper-dim (line is 1.75:1, too faint for a field boundary), green is never used for text. */
:root {
  --ink: #0F1A2B;
  --surface: #16233A;
  --paper: #EDE6D6;
  --paper-dim: #A6B2C2;
  --line: #35435C;
  --brass: #B8763E;
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 24px;
  --space-6: 32px;
  --radius: 8px;
  --text-sm: 14px;
  --text-md: 16px;
  --text-lg: 20px;
  --text-xl: 28px;
  --font: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --ease-out: cubic-bezier(.22, 1, .36, 1);
}

@media (prefers-color-scheme: light) {
  :root {
    --ink: #ECE4D3;
    --surface: #E4DAC5;
    --paper: #1B2A42;
    --paper-dim: #46546B;
    --line: #C1B49B;
    --brass: #975526;
  }
}

*, *::before, *::after { box-sizing: border-box; }

html {
  -webkit-tap-highlight-color: transparent;
  -webkit-text-size-adjust: 100%;
  background: var(--ink);
}

body {
  margin: 0;
  background: var(--ink);
  color: var(--paper);
  font: var(--text-md)/1.5 var(--font);
}

.page {
  max-width: 680px;
  margin: 0 auto;
  padding: var(--space-5) max(var(--space-4), env(safe-area-inset-right, 0px))
           calc(var(--space-6) + env(safe-area-inset-bottom, 0px)) max(var(--space-4), env(safe-area-inset-left, 0px));
  padding-top: max(var(--space-5), env(safe-area-inset-top, 0px));
}

h1 { font-size: var(--text-xl); line-height: 1.2; margin: 0 0 var(--space-2); }
p { margin: 0 0 var(--space-3); }
.lede { color: var(--paper); }
.muted { color: var(--paper-dim); font-size: var(--text-sm); }
.label { color: var(--brass); font-size: var(--text-sm); font-weight: 600; letter-spacing: .04em; text-transform: uppercase; margin-bottom: var(--space-1); }
.visually-hidden { position: absolute; width: 1px; height: 1px; overflow: hidden; clip-path: inset(50%); white-space: nowrap; }

textarea {
  display: block;
  width: 100%;
  min-height: 88px;
  padding: var(--space-3);
  border: 1px solid var(--paper-dim);
  border-radius: var(--radius);
  background: var(--surface);
  color: var(--paper);
  font: 16px/1.4 var(--font); /* 16px: iOS doesn't zoom into the field */
  resize: vertical;
}

.row { display: flex; align-items: center; justify-content: space-between; gap: var(--space-3); margin: var(--space-2) 0 var(--space-4); }

button {
  font: inherit;
  touch-action: manipulation;
  user-select: none;
  -webkit-user-select: none;
  cursor: pointer;
  transition: transform 120ms var(--ease-out), opacity 120ms var(--ease-out);
}
button:active { transform: scale(.97); }
button:disabled { opacity: .6; cursor: progress; }

#send {
  min-height: 44px;
  min-width: 88px;
  padding: 0 var(--space-5);
  border: 0;
  border-radius: var(--radius);
  background: var(--brass);
  color: var(--ink); /* ink on brass: 4.74 / 4.56 */
  font-weight: 600;
}

.examples { display: flex; flex-wrap: wrap; gap: var(--space-2); margin-bottom: var(--space-5); }
.examples p { width: 100%; margin: 0; }
.chip {
  min-height: 44px;
  padding: var(--space-2) var(--space-3);
  border: 1px solid var(--paper-dim);
  border-radius: var(--radius);
  background: transparent;
  color: var(--paper);
  font-size: var(--text-sm);
  text-align: left;
}

:focus-visible { outline: 2px solid var(--brass); outline-offset: 2px; }
a { color: var(--paper); text-underline-offset: 3px; }

@media (hover: hover) and (pointer: fine) {
  .chip:hover { background: var(--surface); }
  #send:hover { opacity: .9; }
  a:hover { text-decoration-thickness: 2px; } /* not brass: links also sit on surface, where brass is under 4.5:1 */
}

.status { min-height: 1.5em; color: var(--paper-dim); font-size: var(--text-sm); }

.answer {
  padding: var(--space-4);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  overflow-wrap: anywhere;
  animation: appear 160ms var(--ease-out);
}
.answer ul { margin: 0 0 var(--space-3); padding-left: var(--space-5); }
.answer li { margin-bottom: var(--space-1); }
.answer.error, .answer.declined { color: var(--paper); }
.sources-title { margin-top: var(--space-4); font-weight: 600; font-size: var(--text-sm); }
.answer .muted { margin-top: var(--space-2); }
.notice { margin: var(--space-4) 0 0; padding-top: var(--space-3); border-top: 1px solid var(--line); color: var(--paper-dim); font-size: var(--text-sm); }

footer { margin-top: var(--space-6); padding-top: var(--space-4); border-top: 1px solid var(--line); color: var(--paper-dim); font-size: var(--text-sm); }
footer a { color: var(--paper-dim); }

@keyframes appear { from { opacity: 0; } to { opacity: 1; } }

@media (prefers-reduced-motion: reduce) {
  .answer { animation: none; }
  button { transition: none; }
  button:active { transform: none; }
}