/* Human TPS: minimal, terminal-flavoured, one screen. */

:root {
  --bg: #0d0f10;
  --fg: #e6e8e6;
  --muted: #8a918d;
  --line: #262a2b;
  --field: #131617;
  --accent: #39d98a;       /* "tokens are flowing" green */
  --accent-ink: #06170e;
  --paused: #e0b44c;
  /* token highlight colors: soft, low-alpha so the text stays readable */
  --tok0: rgba(57, 217, 138, 0.20);
  --tok1: rgba(96, 165, 250, 0.22);
  --tok2: rgba(244, 114, 182, 0.20);
  --tok3: rgba(250, 204, 21, 0.18);
  --tok4: rgba(167, 139, 250, 0.22);
  --mono: ui-monospace, "SF Mono", "Cascadia Code", "JetBrains Mono", Menlo, Consolas, "Liberation Mono", monospace;
  color-scheme: dark;
}

@media (prefers-color-scheme: light) {
  :root {
    --bg: #f6f6f3;
    --fg: #16191a;
    --muted: #666d69;
    --line: #d9dbd6;
    --field: #ffffff;
    --accent: #0f9d58;
    --accent-ink: #ffffff;
    --paused: #a87700;
    --tok0: rgba(15, 157, 88, 0.16);
    --tok1: rgba(37, 99, 235, 0.14);
    --tok2: rgba(219, 39, 119, 0.13);
    --tok3: rgba(202, 138, 4, 0.18);
    --tok4: rgba(124, 58, 237, 0.14);
    color-scheme: light;
  }
}

* { box-sizing: border-box; }

html, body { margin: 0; }

body {
  min-height: 100vh;
  min-height: 100dvh;
  background: var(--bg);
  color: var(--fg);
  font: 15px/1.5 var(--mono);
  -webkit-font-smoothing: antialiased;
}

.wrap {
  max-width: 680px;
  /* Exactly one screen tall: the typing area (.field) takes whatever room is left. */
  height: 100vh;
  height: 100dvh;
  margin: 0 auto;
  padding: clamp(16px, 4vh, 40px) 16px 16px;
  display: flex;
  flex-direction: column;
  gap: clamp(8px, 1.6vh, 18px);
}

@media (max-height: 700px) {
  .wrap { padding-top: 10px; gap: 8px; } /* short laptop screens: every pixel counts */
}

a { color: inherit; text-underline-offset: 3px; text-decoration-color: var(--muted); }
a:hover { color: var(--accent); text-decoration-color: currentColor; }

/* ---- Header ---- */
header { text-align: center; }
h1 {
  margin: 0;
  font-size: clamp(1.4rem, 5vw, 1.9rem);
  letter-spacing: 0.18em;
  font-weight: 800;
}
.cursor { color: var(--accent); animation: blink 1.1s steps(1) infinite; }
@keyframes blink { 50% { opacity: 0; } }
.tagline { margin: 4px 0 0; color: var(--muted); font-size: 0.9rem; }

/* ---- The number ---- */
.meter { text-align: center; }
.tps {
  font-size: clamp(3.5rem, min(22vw, 16vh), 9rem); /* shrinks on narrow *and* short screens */
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.04em;
  font-variant-numeric: tabular-nums;
  color: var(--fg);
  transition: color 0.3s ease;
}
body[data-state="live"] .tps { color: var(--accent); }
body[data-state="paused"] .tps { opacity: 0.6; }
.tps-label {
  margin-top: 6px;
  color: var(--muted);
  font-size: 0.85rem;
  letter-spacing: 0.3em;
}
.status {
  display: inline-block;
  margin-left: 0.6em;
  padding: 1px 7px;
  border: 1px solid var(--line);
  border-radius: 999px;
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}
.compare {
  margin: 6px 0 0;
  min-height: 1.4em; /* reserve the line so the layout doesn't jump when it appears */
  color: var(--muted);
  font-size: 0.8rem;
}
body[data-state="live"] .status { color: var(--accent); border-color: currentColor; }
body[data-state="paused"] .status { color: var(--paused); border-color: currentColor; }

/* ---- Typing area ----
   The textarea is transparent and sits on top of .backdrop, which renders the
   same text with each token colored. Both must share font, padding and wrapping. */
.field {
  position: relative;
  display: flex;
  flex: 1 1 auto;     /* grow into the free space, shrink when the screen is short */
  min-height: 5.5em;
  max-height: 20em;
  background: var(--field);
  border-radius: 10px;
}
textarea, .backdrop {
  padding: 14px 16px;
  font: 16px/1.55 var(--mono); /* 16px avoids iOS zoom-on-focus */
  letter-spacing: normal;
  tab-size: 4;
  white-space: pre-wrap;
  overflow-wrap: break-word;
  word-break: normal;
}
textarea {
  position: relative;
  z-index: 1;
  display: block;
  flex: 1;
  width: 100%;
  min-height: 0;
  margin: 0;
  resize: none;
  background: transparent;
  color: var(--fg);
  caret-color: var(--accent);
  border: 1px solid var(--line);
  border-radius: 10px;
  outline: none;
  -webkit-appearance: none;
  appearance: none;
  transition: border-color 0.2s ease;
}
.backdrop {
  position: absolute;
  top: 1px;  /* inside the textarea's 1px border */
  left: 1px;
  overflow: hidden;
  color: transparent;
  border-radius: 9px;
  pointer-events: none;
}
.backdrop span { border-radius: 3px; }
.t0 { background: var(--tok0); }
.t1 { background: var(--tok1); }
.t2 { background: var(--tok2); }
.t3 { background: var(--tok3); }
.t4 { background: var(--tok4); }
textarea:focus { border-color: var(--accent); }
textarea::placeholder { color: var(--muted); }
textarea:disabled { opacity: 0.6; }

/* ---- Stats ---- */
.stats {
  margin: 0;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 6px 22px;
  color: var(--muted);
  font-size: 0.9rem;
}
.stats b { color: var(--fg); font-weight: 600; font-variant-numeric: tabular-nums; }
.stats b.record { color: var(--accent); }

/* ---- Buttons ---- */
.actions { display: flex; justify-content: center; gap: 10px; }
button {
  font: 600 0.9rem var(--mono);
  padding: 10px 18px;
  min-height: 44px;
  border-radius: 8px;
  border: 1px solid var(--line);
  background: transparent;
  color: var(--fg);
  cursor: pointer;
  transition: border-color 0.15s ease, opacity 0.15s ease;
}
button:hover:not(:disabled) { border-color: var(--accent); }
button:focus-visible, a:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
button.primary { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }
button:disabled { opacity: 0.4; cursor: default; }

.toast, .fineprint { margin: 0; text-align: center; font-size: 0.8rem; color: var(--muted); }
.toast { min-height: 1.2em; color: var(--accent); }

/* ---- Tokenizer switch ---- */
.tok-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-size: 0.8rem;
  color: var(--muted);
}
.seg { display: inline-flex; border: 1px solid var(--line); border-radius: 8px; overflow: hidden; }
.seg button {
  min-height: 32px;
  padding: 4px 12px;
  border: 0;
  border-radius: 0;
  font-size: 0.78rem;
  color: var(--muted);
}
.seg button + button { border-left: 1px solid var(--line); }
.seg button[aria-pressed="true"] { color: var(--accent-ink); background: var(--accent); }
.seg button:disabled { cursor: progress; opacity: 1; }

/* ---- Footer ---- */
footer {
  margin-top: auto;
  padding-top: 14px;
  border-top: 1px solid var(--line);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 8px 16px;
  font-size: 0.8rem;
  color: var(--muted);
}
footer .links { display: flex; gap: 16px; }

/* ---- Share sheet ---- */
.sheet {
  width: min(440px, calc(100vw - 32px));
  max-height: calc(100dvh - 32px);
  padding: 0; /* padding lives on .sheet-body, so a click on the dialog itself = backdrop */
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--bg);
  color: var(--fg);
  font: 15px/1.5 var(--mono);
}
.sheet::backdrop { background: rgba(0, 0, 0, 0.55); }
.sheet-body { padding: 16px; display: flex; flex-direction: column; gap: 14px; }
.sheet-head { display: flex; align-items: center; justify-content: space-between; }
.sheet h2 { margin: 0; font-size: 1rem; letter-spacing: 0.04em; }
button.icon { min-height: 36px; padding: 4px 10px; border-color: transparent; color: var(--muted); }
.preview {
  margin: 0;
  padding: 12px 14px;
  background: var(--field);
  border: 1px solid var(--line);
  border-radius: 10px;
  font: 0.85rem/1.5 var(--mono);
  white-space: pre-wrap;
  overflow-wrap: anywhere;
  user-select: all; /* one tap selects the whole message, as a manual copy fallback */
}
.sheet-main { display: flex; gap: 10px; }
.sheet-main button { flex: 1; }
.socials { display: grid; grid-template-columns: repeat(2, 1fr); gap: 8px; }
.socials a {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  border: 1px solid var(--line);
  border-radius: 8px;
  font-size: 0.85rem;
  font-weight: 600;
  text-decoration: none;
}
.socials a:hover { border-color: var(--accent); }

/* ---- llama.cpp mode: always a dark terminal, whatever the system theme ---- */
body[data-mode="llama"] {
  --bg: #050505;
  --fg: #d4d4d4;
  --muted: #7c7c7c;
  --line: #262626;
  --field: #0b0b0b;
  --accent: #4af626;
  --accent-ink: #031a00;
  --paused: #e5c07b;
  --tok0: rgba(74, 246, 38, 0.16);
  --tok1: rgba(96, 165, 250, 0.20);
  --tok2: rgba(244, 114, 182, 0.18);
  --tok3: rgba(250, 204, 21, 0.16);
  --tok4: rgba(167, 139, 250, 0.20);
  color-scheme: dark;
}
body[data-mode="llama"] .tagline,
body[data-mode="llama"] .compare { display: none; }
body[data-mode="llama"] .tps { text-shadow: 0 0 18px rgba(74, 246, 38, 0.25); }

.term { display: none; }
body[data-mode="llama"] .term {
  display: block;
  flex-shrink: 0; /* only the typing area gives up room on short screens */
  background: var(--field);
  border: 1px solid var(--line);
  border-radius: 10px;
  overflow: hidden;
}
.term-bar {
  display: block;
  padding: 6px 12px;
  border-bottom: 1px solid var(--line);
  color: var(--fg);
  font: 0.72rem/1.6 var(--mono);
}
.term-bar select {
  font: inherit;
  color: var(--accent);
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 1px 4px;
  cursor: pointer;
}
.console {
  margin: 0;
  height: 6em;
  overflow-y: auto;
  padding: 6px 12px;
  color: var(--muted);
  font: 0.68rem/1.45 var(--mono);
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}
.console .hl { color: var(--accent); }
@media (min-height: 900px) {
  .console { height: 10em; }
}

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