/* chat.saiden.dev
 *
 * Default look: clean, generic, neutral chat. Inter, soft grey, no cursive.
 * Personality is the result of calibration, not the starting point.
 *
 * Once calibrated, the body gets data-* attributes:
 *   data-palette    = default | rose | morning | evening | sage | paper | ink
 *   data-typography = sans | serif-warm | serif-formal | mixed-modern | mono
 *   data-density    = airy | normal | dense
 *   data-labels     = block | cursive | none | prefix
 *
 * Each combination is a different room.
 */

/* ===================== DEFAULT TOKENS (neutral) ===================== */
:root {
  /* surfaces */
  --bg:           #f4f4f3;
  --bg-soft:      #ececea;
  --surface:      #e3e3e1;

  /* text */
  --ink:          #1f2024;
  --ink-muted:    #6a6a6f;
  --ink-faint:    #a8a8ac;

  /* accents (low-saturation by default) */
  --coral:        #6a6a6f;       /* default accent is neutral grey */
  --red:          #8a4a3e;
  --gold:         #9a8460;

  /* lines */
  --line:         #d6d6d3;

  /* font stacks (default = sans-only) */
  --serif:        'Source Serif Pro', Georgia, serif;
  --serif-warm:   'Cormorant Garamond', Georgia, serif;
  --hand:         'Caveat', 'Brush Script MT', cursive;
  --sans:         'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --mono:         'JetBrains Mono', Menlo, monospace;

  /* derived families — overridden by data-typography */
  --font-body:    var(--sans);
  --font-label:   var(--sans);

  /* spacing scale — overridden by data-density */
  --msg-gap:      1.5rem;
  --max-col:      36rem;
  --body-size:    1rem;
  --label-size:   0.72rem;
  --bt-size:      1.05rem;

  /* prompt baseline */
  --line-thickness: 1px;
}

/* ===================== PALETTES ===================== */

body[data-palette="rose"] {
  --bg:           #f5ebe0;
  --bg-soft:      #f8e8db;
  --surface:      #f0d9c7;
  --ink:          #3d2820;
  --ink-muted:    #8b6f60;
  --ink-faint:    #b89a87;
  --coral:        #e07856;
  --red:          #c54f3d;
  --line:         #e8d4c0;
}

body[data-palette="morning"] {
  --bg:           #faf3e3;
  --bg-soft:      #f4ead0;
  --surface:      #ecdfb8;
  --ink:          #3a2f1a;
  --ink-muted:    #7a6a4a;
  --ink-faint:    #b6a684;
  --coral:        #d99b4a;
  --red:          #b5703a;
  --line:         #e7d6a8;
}

body[data-palette="evening"] {
  --bg:           #ece1de;
  --bg-soft:      #e4d2cd;
  --surface:      #d8bdb6;
  --ink:          #2e1b1d;
  --ink-muted:    #7d5a59;
  --ink-faint:    #b08c8a;
  --coral:        #b04a55;
  --red:          #84313e;
  --line:         #d6bbb6;
}

body[data-palette="sage"] {
  --bg:           #ecede4;
  --bg-soft:      #e1e3d4;
  --surface:      #cdd1bd;
  --ink:          #25291e;
  --ink-muted:    #5d6451;
  --ink-faint:    #97a085;
  --coral:        #6f8861;
  --red:          #58683f;
  --line:         #cfd4be;
}

body[data-palette="paper"] {
  --bg:           #f7f4ed;
  --bg-soft:      #efeada;
  --surface:      #e1d9c2;
  --ink:          #1d1c19;
  --ink-muted:    #6b6759;
  --ink-faint:    #a8a292;
  --coral:        #8b5d2f;
  --red:          #6a3f1b;
  --line:         #d8cfb6;
}

body[data-palette="ink"] {
  --bg:           #1d1d1f;
  --bg-soft:      #26262a;
  --surface:      #2f2f34;
  --ink:          #e8e6df;
  --ink-muted:    #9d9a90;
  --ink-faint:    #65635c;
  --coral:        #d8a572;
  --red:          #b87653;
  --line:         #353539;
}

/* ===================== TYPOGRAPHY SETS ===================== */

body[data-typography="sans"] {
  --font-body:  var(--sans);
  --font-label: var(--sans);
}
body[data-typography="serif-warm"] {
  --font-body:  var(--serif-warm);
  --font-label: var(--hand);
  --bt-size:    1.25rem;
}
body[data-typography="serif-formal"] {
  --font-body:  var(--serif);
  --font-label: var(--sans);
  --bt-size:    1.15rem;
}
body[data-typography="mixed-modern"] {
  --font-body:  var(--sans);
  --font-label: var(--hand);
}
body[data-typography="mono"] {
  --font-body:  var(--mono);
  --font-label: var(--mono);
  --bt-size:    0.95rem;
}

/* ===================== DENSITY ===================== */
body[data-density="airy"]   { --msg-gap: 2.3rem; --max-col: 38rem; --body-size: 1.05rem; }
body[data-density="normal"] { --msg-gap: 1.5rem; --max-col: 36rem; --body-size: 1rem; }
body[data-density="dense"]  { --msg-gap: 1rem;   --max-col: 34rem; --body-size: 0.95rem; }

/* ===================== RESET ===================== */
*, *::before, *::after { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

body {
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-body);
  font-weight: 400;
  font-size: var(--body-size);
  line-height: 1.55;
  min-height: 100vh;
}

/* ===================== LAYOUT ===================== */
.page {
  max-width: var(--max-col);
  margin: 0 auto;
  padding: 3rem 1.5rem 0 1.5rem;
  position: relative;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* ---------- top-nav strip (recalibrate · sign out · sigil) ---------- */
.topnav {
  position: fixed;
  top: 1.25rem;
  right: 1.25rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  z-index: 10;
}
.topnav__link {
  font-family: var(--sans);
  font-size: 0.62rem;
  font-weight: 400;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-faint);
  text-decoration: none;
  background: transparent;
  border: none;
  padding: 0;
  cursor: pointer;
  opacity: 0.45;
  transition: opacity 400ms ease, color 400ms ease;
}
.topnav__link:hover,
.topnav__link:focus-visible {
  opacity: 1;
  color: var(--ink);
  outline: none;
}
.topnav__link:disabled {
  opacity: 0.25;
  cursor: progress;
}
.topnav__sep {
  color: var(--ink-faint);
  opacity: 0.35;
  font-size: 0.7rem;
}

.sigil {
  width: 14px;
  height: 14px;
  opacity: 0.35;
  transition: opacity 600ms ease;
  user-select: none;
  margin-left: 0.4rem;
}
.sigil:hover { opacity: 0.85; }
.sigil img { width: 100%; height: 100%; display: block; }

/* ===================== CONVERSATION ===================== */
.conversation {
  flex: 1 0 auto;
  padding-bottom: 2rem;
}

.msg {
  margin: var(--msg-gap) 0;
  opacity: 0;
  transform: translateY(6px);
  animation: appear 500ms cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.msg__label {
  font-family: var(--font-label);
  font-weight: 400;
  color: var(--ink-muted);
  font-size: var(--label-size);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  margin-bottom: 0.45rem;
  user-select: none;
}

/* Cursive label override */
body[data-labels="cursive"] .msg__label {
  font-family: var(--hand);
  font-size: 1rem;
  letter-spacing: 0.01em;
  text-transform: none;
}
body[data-labels="none"] .msg__label { display: none; }
body[data-labels="prefix"] .msg__label {
  display: inline;
  margin-right: 0.5em;
  font-weight: 600;
  text-transform: none;
}

.msg__body {
  color: var(--ink);
  font-size: var(--bt-size);
  line-height: 1.6;
  white-space: pre-wrap;
  word-wrap: break-word;
}

.msg--user .msg__body {
  color: var(--ink-muted);
  font-size: var(--body-size);
  line-height: 1.55;
}

.msg--system .msg__body {
  color: var(--ink-faint);
  font-size: 0.74rem;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  font-family: var(--sans);
  font-weight: 300;
}
.msg--system .msg__label { display: none; }

.msg--calibration .msg__body {
  color: var(--ink);
  font-size: calc(var(--bt-size) * 1.02);
  font-style: italic;
  line-height: 1.65;
}
.msg--calibration .msg__label { display: none; }
.msg--calibration { margin: 1.5rem 0; }

/* repeat-label hide */
.msg[data-hide-label="true"] .msg__label { display: none; }
.msg[data-hide-label="true"] { margin-top: 0.8rem; }

/* ===================== THINKING ===================== */
.thinking {
  color: var(--coral);
  font-size: 0.65rem;
  margin: 1.5rem 0;
  user-select: none;
  animation: pulse 1.8s ease-in-out infinite;
}
.thinking::before { content: "●"; }
@keyframes pulse {
  0%, 100% { opacity: 0.30; }
  50%      { opacity: 1.0; }
}
@keyframes appear {
  to { opacity: 1; transform: translateY(0); }
}

/* typewriter cursor */
.caret {
  display: inline-block;
  width: 0.5ch;
  margin-left: 0.05ch;
  color: var(--coral);
  animation: caret 800ms ease-out forwards;
}
.caret::after { content: "▍"; }
@keyframes caret {
  0%   { opacity: 1; }
  100% { opacity: 0; }
}

/* ===================== PROMPT ===================== */
.prompt {
  position: sticky;
  bottom: 0;
  background: var(--bg);
  padding: 1.5rem 0 2.5rem 0;
  z-index: 5;
}
.prompt__line {
  border: none;
  border-top: var(--line-thickness) solid var(--line);
  margin: 0 0 0.85rem 0;
}
.prompt__row {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}
.prompt__input {
  flex: 1;
  border: none;
  background: transparent;
  outline: none;
  font-family: var(--font-body);
  font-weight: 400;
  font-size: var(--body-size);
  color: var(--ink);
  padding: 0;
  min-width: 0;
}
.prompt__input::placeholder {
  color: var(--ink-faint);
  font-style: italic;
}
.prompt__input:focus { caret-color: var(--coral); }

/* ===================== MIC ===================== */
.prompt__mic {
  background: transparent;
  border: none;
  cursor: pointer;
  color: var(--ink-faint);
  padding: 0.4rem;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  transition: color 200ms ease, background 200ms ease, transform 200ms ease;
}
.prompt__mic:hover  { color: var(--ink-muted); }
.prompt__mic:active { transform: scale(0.95); }
.prompt__mic.recording {
  color: var(--coral);
  background: rgba(0, 0, 0, 0.04);
  animation: mic-pulse 1.2s ease-in-out infinite;
}
.prompt__mic.transcribing {
  color: var(--gold);
  animation: mic-spin 1.2s linear infinite;
}
.prompt__mic.empty {
  color: var(--red);
  animation: mic-empty 0.7s ease;
}
@keyframes mic-pulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(0, 0, 0, 0.18); }
  50%      { box-shadow: 0 0 0 8px rgba(0, 0, 0, 0); }
}
@keyframes mic-spin { to { transform: rotate(360deg); } }
@keyframes mic-empty {
  0%   { transform: translateX(0); }
  20%  { transform: translateX(-2px); }
  40%  { transform: translateX(2px); }
  60%  { transform: translateX(-2px); }
  80%  { transform: translateX(2px); }
  100% { transform: translateX(0); }
}

/* ===================== CHOICE TILES ===================== */
.choices {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
  margin: 1rem 0 0.25rem 0;
}
.choice {
  background: var(--bg-soft);
  border: 1px solid var(--line);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-style: normal;
  padding: 0.5rem 0.95rem;
  border-radius: 999px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  transition: background 220ms ease, color 220ms ease,
              border-color 220ms ease, transform 220ms ease, opacity 220ms ease;
}
.choice:hover {
  background: var(--surface);
  border-color: var(--coral);
}
.choice:active { transform: scale(0.97); }
.choice:disabled { cursor: default; opacity: 0.45; }
.choice--selected {
  background: var(--coral);
  color: var(--bg);
  border-color: var(--coral);
  opacity: 1 !important;
}
.choice--other {
  font-style: italic;
  color: var(--ink-muted);
  background: transparent;
}
.choice__icon { font-size: 1.05rem; line-height: 1; display: inline-flex; }
.choice__label { line-height: 1; }

/* ===================== DENIED PAGE ===================== */
.denied {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  padding: 2rem;
  text-align: center;
}
.denied__title {
  font-family: var(--font-body);
  font-size: 1.7rem;
  color: var(--ink);
  font-weight: 500;
  margin: 0 0 1rem 0;
}
.denied__body {
  font-family: var(--font-body);
  font-size: 1rem;
  color: var(--ink-muted);
  max-width: 28rem;
  line-height: 1.6;
}
.denied__link {
  font-family: var(--sans);
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--red);
  text-decoration: none;
  margin-top: 3rem;
  display: inline-block;
  border-bottom: 1px solid var(--line);
  padding-bottom: 0.15rem;
}
.denied__link:hover { border-color: var(--red); }