:root {
  --bg: #0a0f1e;
  --panel: #131c33;
  --panel-2: #1c2745;
  --border: rgba(255, 255, 255, 0.09);
  --text: #ecf1fb;
  --muted: #8fa0c2;
  --green: #2ecc71;
  --red: #ff5e78;
  --gold: #f5c518;
  --cyan: #00d4ff;
  --purple: #7c5cff;
  --radius: 16px;
  --mono: "Consolas", "SF Mono", "Courier New", monospace;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

body {
  font-family: "Segoe UI", system-ui, -apple-system, Roboto, Arial, sans-serif;
  background:
    radial-gradient(600px 350px at 80% -10%, rgba(124, 92, 255, 0.22), transparent 60%),
    radial-gradient(600px 350px at 10% 110%, rgba(0, 212, 255, 0.14), transparent 60%),
    var(--bg);
  color: var(--text);
  min-height: 100vh;
  display: grid; place-items: center;
  padding: 24px;
}

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

.app { width: min(520px, 100%); text-align: center; }

.logo { font-size: 1.5rem; font-weight: 900; margin-bottom: 26px; }
.logo span { color: var(--cyan); }

/* ---------- Display ---------- */
.display-wrap {
  background: var(--panel); border: 1px solid var(--border); border-radius: 22px;
  padding: 34px 20px 22px; box-shadow: 0 20px 50px rgba(0, 0, 0, 0.4);
}
.display {
  font-family: var(--mono);
  font-size: clamp(3rem, 14vw, 4.6rem);
  font-weight: 700; letter-spacing: 2px; line-height: 1;
  display: flex; justify-content: center; align-items: baseline;
}
.display.running .cs { color: var(--cyan); }
.display .colon { animation: blink 1s steps(1) infinite; margin: 0 4px; }
@keyframes blink { 50% { opacity: 0.25; } }
.cs { font-size: 0.5em; color: var(--muted); }

.lap-preview { color: var(--muted); font-weight: 700; font-size: 0.9rem; margin-top: 14px; min-height: 1.4em; }

/* ---------- Controls ---------- */
.controls { display: flex; gap: 14px; justify-content: center; margin: 26px 0 12px; }
.ctrl {
  min-width: 130px; padding: 15px 22px; border-radius: 16px;
  font-weight: 900; font-size: 1rem; transition: 0.2s;
  border: 1.5px solid var(--border); background: var(--panel-2);
}
.ctrl:hover:not(:disabled) { transform: translateY(-3px); }
.ctrl:disabled { opacity: 0.4; cursor: not-allowed; }
.ctrl.start { background: linear-gradient(135deg, var(--green), #1f9d55); color: #fff; box-shadow: 0 8px 22px rgba(46, 204, 113, 0.3); }
.ctrl.start.stop { background: linear-gradient(135deg, var(--red), #d63e55); box-shadow: 0 8px 22px rgba(255, 94, 120, 0.3); }
.ctrl.lap { background: linear-gradient(135deg, var(--purple), var(--cyan)); color: #fff; border: none; }
.ctrl.reset:hover:not(:disabled) { border-color: var(--gold); color: var(--gold); }

.kbd-hint { color: var(--muted); font-size: 0.78rem; }
.kbd-hint b { color: var(--text); background: var(--panel-2); padding: 2px 8px; border-radius: 6px; }

/* ---------- Laps ---------- */
.laps-wrap {
  margin-top: 26px; background: var(--panel); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 18px; text-align: left;
}
.laps-head { display: flex; justify-content: space-between; align-items: center; margin-bottom: 12px; }
.laps-head h2 { font-size: 0.98rem; }
.clear-laps { color: var(--red); font-size: 0.8rem; font-weight: 800; }
.clear-laps:hover { text-decoration: underline; }

.laps-scroll { max-height: 300px; overflow-y: auto; }
.laps-table { width: 100%; border-collapse: collapse; font-size: 0.92rem; }
.laps-table th {
  color: var(--muted); font-size: 0.72rem; text-transform: uppercase; letter-spacing: 1px;
  text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--border);
  position: sticky; top: 0; background: var(--panel);
}
.laps-table td {
  padding: 11px 10px; border-bottom: 1px solid var(--border);
  font-family: var(--mono); font-weight: 600;
}
.laps-table tr.best td { color: var(--green); }
.laps-table tr.worst td { color: var(--red); }
.laps-table .lap-num { font-family: inherit; font-weight: 900; }
.laps-table .lap-num .badge { font-size: 0.65rem; font-weight: 800; margin-left: 8px; padding: 2px 8px; border-radius: 999px; }
.laps-table .lap-num .badge.best { background: rgba(46, 204, 113, 0.2); color: var(--green); }
.laps-table .lap-num .badge.worst { background: rgba(255, 94, 120, 0.18); color: var(--red); }

/* ---------- Toast ---------- */
#toast {
  position: fixed; bottom: 26px; left: 50%; transform: translate(-50%, 80px);
  background: var(--panel-2); border: 1px solid var(--border); color: var(--text);
  padding: 12px 24px; border-radius: 999px; font-weight: 700;
  opacity: 0; transition: 0.3s; z-index: 100; max-width: 90vw;
}
#toast.show { opacity: 1; transform: translate(-50%, 0); }