/* System theme (light/dark) with CSS variables */
:root {
  color-scheme: light dark;

  --bg: #0b0d12;
  --panel: #121621;
  --panel2: #0f1320;
  --text: #e8eefc;
  --muted: #9aa4bd;

  --good: #30d158;   /* green */
  --bad: #ff453a;    /* red */
  --caret: #64d2ff;  /* cyan */

  --border: rgba(255, 255, 255, 0.08);
  --shadow: 0 12px 30px rgba(0, 0, 0, 0.35);

  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas,
    "Liberation Mono", "Courier New", monospace;
  --font-ui: system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial,
    "Apple Color Emoji", "Segoe UI Emoji";
}

@media (prefers-color-scheme: light) {
  :root {
    --bg: #f6f7fb;
    --panel: #ffffff;
    --panel2: #ffffff;
    --text: #101424;
    --muted: #5b647a;

    --border: rgba(16, 20, 36, 0.12);
    --shadow: 0 10px 30px rgba(10, 14, 24, 0.10);
  }
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  font-family: var(--font-ui);
  background: var(--bg);
  color: var(--text);
}

.app {
  max-width: 980px;
  margin: 0 auto;
  padding: 20px;
}

.topbar {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 14px;
  align-items: center;
  margin-bottom: 16px;
}

.brand h1 {
  font-size: 18px;
  margin: 0;
  letter-spacing: 0.2px;
}
.subtitle {
  margin: 4px 0 0;
  color: var(--muted);
  font-size: 13px;
}

.stats {
  display: grid;
  grid-auto-flow: column;
  gap: 10px;
  align-items: center;
  justify-content: end;
}

.stat {
  background: color-mix(in oklab, var(--panel) 90%, transparent);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 10px 12px;
  min-width: 90px;
  box-shadow: var(--shadow);
}

.stat__label {
  font-size: 11px;
  color: var(--muted);
}
.stat__value {
  font-size: 18px;
  font-weight: 650;
  margin-top: 3px;
  font-variant-numeric: tabular-nums;
}

.btn {
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 10px 14px;
  background: color-mix(in oklab, var(--panel) 92%, transparent);
  color: var(--text);
  cursor: pointer;
  font-weight: 600;
}
.btn:hover { border-color: color-mix(in oklab, var(--border) 30%, var(--caret)); }

.iconBtn {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  border: 1px solid color-mix(in oklab, var(--caret) 65%, var(--border));
  background: var(--caret);
  color: #0b0d12;
  display: grid;
  place-items: center;
  cursor: pointer;
  box-shadow: var(--shadow);
}
.iconBtn:hover { filter: brightness(1.05); }
.iconBtn:focus-visible {
  outline: 2px solid var(--caret);
  outline-offset: 2px;
}
.iconBtn svg {
  width: 18px;
  height: 18px;
}
.iconBtn--ghost {
  background: transparent;
  color: var(--text);
  border-color: var(--border);
  box-shadow: none;
}
.iconBtn--ghost:hover { border-color: color-mix(in oklab, var(--border) 50%, var(--caret)); }

.card {
  background: color-mix(in oklab, var(--panel) 92%, transparent);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 16px;
  box-shadow: var(--shadow);
}
.typing-card,
.typing-card * {
  cursor: text;
}
.typing-card .iconBtn,
.typing-card .iconBtn * {
  cursor: pointer;
}

.promptShell {
  position: relative;
  padding: 12px 12px 56px;
  border-radius: 14px;
  border: 1px solid var(--border);
  background: color-mix(in oklab, var(--panel2) 92%, transparent);
}

.promptActions {
  position: absolute;
  right: 12px;
  bottom: 12px;
  display: flex;
  gap: 8px;
  align-items: center;
}

.promptBtn {
  border: 1px solid color-mix(in oklab, var(--caret) 45%, var(--border));
  border-radius: 12px;
  padding: 8px 14px;
  background: color-mix(in oklab, var(--caret) 12%, var(--panel2));
  color: color-mix(in oklab, var(--caret) 65%, var(--text));
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
}
.promptBtn:hover {
  color: var(--text);
  border-color: color-mix(in oklab, var(--caret) 65%, var(--border));
}
.promptBtn:focus-visible {
  outline: 2px solid var(--caret);
  outline-offset: 2px;
}

.prompt {
  font-family: var(--font-mono);
  font-size: 20px;
  line-height: 1.8;
  letter-spacing: 0.2px;
  user-select: none;
  white-space: pre-wrap;
  word-break: break-word;
  min-height: 140px;
}

.hint {
  margin-top: 10px;
  color: var(--muted);
  font-size: 13px;
}

.done {
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px solid var(--border);
}
.done h2 { margin: 0 0 6px; font-size: 16px; }
.done p { margin: 0; color: var(--muted); }

.focusTrap {
  position: absolute;
  left: -9999px;
  top: -9999px;
  width: 1px;
  height: 1px;
  opacity: 0;
}

.char {
  opacity: 0.85;
}
.char.correct { color: var(--good); opacity: 1; }
.char.incorrect { color: var(--bad); opacity: 1; }

.char.caret {
  position: relative;
  opacity: 1;
}
.char.caret::after {
  content: "";
  position: absolute;
  left: 0;
  top: -2px;
  width: 3px;
  height: 1.4em;
  background: var(--caret);
  border-radius: 2px;
  animation: caret-blink 1s steps(1, end) infinite;
}

@keyframes caret-blink {
  0%, 49% { opacity: 1; }
  50%, 100% { opacity: 0; }
}

.char.space {
  /* make spaces visible enough while still natural */
}
.char.space.caret::after {
  width: 70%;
  left: 15%;
}

.history {
  margin-top: 16px;
}

.history__header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 8px;
}

.history__header h2 {
  margin: 0;
  font-size: 16px;
}

.history__actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

.history__meta {
  color: var(--muted);
  font-size: 12px;
}

.history__list {
  margin: 0;
  padding-left: 18px;
  display: grid;
  gap: 8px;
}

.historyItem {
  padding: 10px 12px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: color-mix(in oklab, var(--panel2) 85%, transparent);
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 10px;
  align-items: center;
}

.historyItem__main {
  display: grid;
  gap: 2px;
}
.historyItem__title {
  font-size: 13px;
  font-weight: 650;
}
.historyItem__sub {
  font-size: 12px;
  color: var(--muted);
  font-variant-numeric: tabular-nums;
}

.pill {
  font-family: var(--font-mono);
  font-size: 12px;
  border: 1px solid var(--border);
  padding: 6px 10px;
  border-radius: 999px;
  color: var(--text);
  font-variant-numeric: tabular-nums;
}

.footer {
  margin-top: 16px;
  color: var(--muted);
  text-align: center;
}
.footer__inner {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 14px;
  align-items: center;
  justify-content: center;
}
.donateBtn {
  border: 1px solid color-mix(in oklab, var(--caret) 35%, var(--border));
  border-radius: 999px;
  padding: 6px 12px;
  background: color-mix(in oklab, var(--caret) 10%, var(--panel2));
  color: var(--text);
  font-size: 12px;
  font-weight: 600;
  text-decoration: none;
}
.donateBtn:hover {
  border-color: color-mix(in oklab, var(--caret) 60%, var(--border));
}
.donateBtn--ghost {
  background: transparent;
  color: var(--muted);
}
.donateBtn--ghost:hover {
  color: var(--text);
}
.donateBtn--quiet {
  opacity: 0.7;
}
.donateBtn--quiet:hover {
  opacity: 1;
}
.donateBtn--with-icon {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.donateBtn--with-icon svg {
  width: 14px;
  height: 14px;
}
@media (max-width: 760px) {
  .topbar {
    grid-template-columns: 1fr;
  }
  .stats { justify-content: start; grid-auto-flow: row; grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .history__header {
    flex-direction: column;
    align-items: flex-start;
  }
}