:root {
  --bg: #16181d;
  --panel: #1f2229;
  --panel-2: #272b34;
  --line: #333845;
  --text: #ecebe6;
  --muted: #9a9ca5;
  --accent: #f2a93b;
  --accent-ink: #1b1406;
  --ok: #4fbf8a;
  --bad: #e8634f;
  --radius: 14px;
  --font: "IBM Plex Sans", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, Menlo, Consolas, monospace;
}

@media (prefers-color-scheme: light) {
  :root {
    --bg: #f4f2ec;
    --panel: #ffffff;
    --panel-2: #ece9e1;
    --line: #dcd8cd;
    --text: #1d1f24;
    --muted: #6b6d75;
    --accent: #c97c0c;
    --accent-ink: #ffffff;
    --ok: #23905d;
    --bad: #c8452f;
  }
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  -webkit-font-smoothing: antialiased;
  -webkit-tap-highlight-color: transparent;
}

button {
  font: inherit;
  color: inherit;
  cursor: pointer;
  border: 0;
  background: none;
}

button:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

.screen {
  max-width: 880px;
  margin: 0 auto;
  padding: max(24px, env(safe-area-inset-top)) 16px max(32px, env(safe-area-inset-bottom));
}

/* ---------------- Grup ekranı ---------------- */

.hero { margin: 8px 0 28px; }

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--mono);
  font-size: 0.8rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
}

.lamp {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 12px var(--accent);
}

h1 {
  font-size: clamp(2rem, 6vw, 3.2rem);
  line-height: 1.05;
  margin: 14px 0 10px;
  letter-spacing: -0.02em;
}

.lead { color: var(--muted); max-width: 560px; margin: 0; line-height: 1.5; }

.settings { display: flex; align-items: center; gap: 12px; margin-top: 20px; }
.settings-label { color: var(--muted); font-size: 0.9rem; }

.seg {
  display: inline-flex;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 3px;
}
.seg button {
  min-width: 44px;
  padding: 6px 14px;
  border-radius: 999px;
  color: var(--muted);
  font-weight: 600;
}
.seg button.on { background: var(--accent); color: var(--accent-ink); }

.notice {
  background: var(--panel);
  border: 1px solid var(--line);
  border-left: 3px solid var(--accent);
  border-radius: 8px;
  padding: 14px 16px;
  line-height: 1.5;
}
.notice code { font-family: var(--mono); color: var(--accent); }

.group-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: 12px;
}

.group {
  width: 100%;
  height: 100%;
  text-align: left;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 16px 18px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  transition: border-color 0.15s, transform 0.15s;
}
.group:hover { border-color: var(--accent); transform: translateY(-1px); }
.group.featured { border-color: color-mix(in srgb, var(--accent) 55%, var(--line)); }

.group-head { display: flex; justify-content: space-between; align-items: baseline; gap: 8px; }
.group-name { font-weight: 600; font-size: 1.05rem; }
.group-count { font-family: var(--mono); font-size: 0.8rem; color: var(--accent); white-space: nowrap; }
.group-langs {
  color: var(--muted);
  font-size: 0.85rem;
  line-height: 1.45;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.credits { margin-top: 36px; color: var(--muted); font-size: 0.8rem; }

/* ---------------- Oyun ekranı ---------------- */

.topbar {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 12px;
  margin-bottom: 20px;
}
.ghost { color: var(--muted); padding: 8px 4px; }
.ghost:hover { color: var(--text); }
.group-title { text-align: center; font-weight: 600; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.scorebox { font-family: var(--mono); display: flex; gap: 10px; align-items: center; }
.streak { color: var(--accent); }

.stage {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 20px;
  padding: 28px 20px 20px;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.play {
  position: relative;
  width: 132px;
  height: 132px;
  border-radius: 50%;
  display: grid;
  place-items: center;
}
.play svg { position: absolute; inset: 0; transform: rotate(-90deg); }
.ring-bg { fill: var(--panel-2); stroke: var(--line); stroke-width: 4; }
.ring {
  fill: none;
  stroke: var(--accent);
  stroke-width: 6;
  stroke-linecap: round;
  stroke-dasharray: 339.3;
  stroke-dashoffset: 339.3;
  transition: stroke-dashoffset 0.1s linear;
}
.play-icon { position: relative; font-size: 2.2rem; color: var(--text); padding-left: 4px; }
.play.playing .play-icon { padding-left: 0; }
.play.loading .ring-bg { animation: pulse 1s ease-in-out infinite; }
@keyframes pulse { 50% { stroke: var(--accent); } }

.status {
  margin: 14px 0 22px;
  font-size: 1.15rem;
  font-weight: 600;
  min-height: 1.5em;
  text-align: center;
}
.status.ok { color: var(--ok); }
.status.bad { color: var(--bad); }

.options {
  width: 100%;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
}
.option {
  display: flex;
  align-items: center;
  gap: 12px;
  text-align: left;
  min-height: 56px;
  padding: 12px 14px;
  background: var(--panel-2);
  border: 1px solid var(--line);
  border-radius: 12px;
  font-weight: 500;
  font-size: 1.02rem;
  transition: border-color 0.12s, background 0.12s;
}
.option:not(:disabled):hover { border-color: var(--accent); }
.option .key {
  font-family: var(--mono);
  font-size: 0.75rem;
  color: var(--muted);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 2px 6px;
}
.option:disabled { cursor: default; opacity: 0.55; }
.option.correct { opacity: 1; border-color: var(--ok); background: color-mix(in srgb, var(--ok) 18%, var(--panel-2)); }
.option.wrong { opacity: 1; border-color: var(--bad); background: color-mix(in srgb, var(--bad) 18%, var(--panel-2)); }

.reveal {
  width: 100%;
  margin-top: 16px;
  padding: 14px 16px;
  border-radius: 12px;
  background: var(--panel-2);
}
.reveal-text { margin: 0; font-style: italic; line-height: 1.5; }
.reveal-src { margin: 8px 0 0; color: var(--muted); font-size: 0.8rem; font-family: var(--mono); }

.controls { display: flex; gap: 10px; width: 100%; margin-top: 18px; }
.controls button { flex: 1; min-height: 50px; border-radius: 12px; font-weight: 600; }
.secondary { background: var(--panel-2); border: 1px solid var(--line); }
.primary { background: var(--accent); color: var(--accent-ink); }
.primary:disabled { opacity: 0.35; cursor: default; }

.keys { margin: 14px 0 0; color: var(--muted); font-size: 0.75rem; text-align: center; }

.mistakes {
  margin-top: 16px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 14px 18px;
}
.mistakes h2 { font-size: 0.95rem; margin: 0 0 8px; }
.mistakes ul { list-style: none; margin: 0; padding: 0; }
.mistakes li { display: flex; justify-content: space-between; gap: 12px; padding: 6px 0; border-top: 1px solid var(--line); font-size: 0.92rem; }
.mistakes li:first-child { border-top: 0; }
.mistakes .heard { color: var(--ok); }
.mistakes .chosen { color: var(--bad); }
.mistakes .times { font-family: var(--mono); color: var(--muted); }

.missing { color: var(--muted); font-size: 0.8rem; margin-top: 16px; }

@media (max-width: 520px) {
  .options { grid-template-columns: 1fr; }
  .keys { display: none; }
  .stage { padding: 22px 14px 16px; }
}

@media (hover: none) { .keys, .option .key { display: none; } }