.app {
  width: min(1120px, 100%);
  min-height: 100%;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 1.1rem;
  padding: 1.25rem;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.home-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 1px solid var(--surface-border);
  background: var(--surface);
  color: var(--muted);
  text-decoration: none;
  transition: color 160ms ease, border-color 160ms ease, background 160ms ease;
  flex-shrink: 0;
}
.home-btn:hover {
  color: var(--text);
  border-color: var(--surface-border-strong);
  background: var(--surface-strong);
}
.home-btn svg { width: 17px; height: 17px; }

.topbar-actions {
  display: inline-flex;
  border: 1px solid var(--surface-border);
  border-radius: 999px;
  background: var(--surface);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
  padding: 0.24rem;
  box-shadow: var(--shadow-md);
}

.mode-btn {
  border: 0;
  border-radius: 999px;
  padding: 0.5rem 0.95rem;
  color: var(--muted);
  background: transparent;
  font-weight: 500;
  cursor: pointer;
  letter-spacing: 0.01em;
  transition: color 160ms ease, background 160ms ease;
}

.mode-btn.active {
  color: var(--text);
  background: linear-gradient(180deg, rgba(60, 110, 113, 0.38), rgba(60, 110, 113, 0.14));
}

.display-wrap {
  border: 1px solid var(--surface-border-strong);
  background: linear-gradient(160deg, rgba(60, 110, 113, 0.12), rgba(26, 30, 30, 0.94));
  border-radius: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: clamp(1rem, 2.4vw, 2rem);
  min-height: min(56vh, 520px);
  box-shadow: var(--shadow-lg);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
}

.display-main {
  display: grid;
  place-items: center;
}

.status {
  margin: 0.55rem 0 0.1rem;
  color: var(--muted);
  font-size: clamp(0.95rem, 1.6vw, 1.08rem);
  letter-spacing: 0.03em;
  text-transform: uppercase;
}

.time-display {
  margin: 0;
  font-size: clamp(6.2rem, 22vw, 19.5rem);
  line-height: 0.92;
  font-weight: 700;
  letter-spacing: 0.04em;
  font-variant-numeric: tabular-nums;
  text-shadow: 0 8px 36px rgba(0, 0, 0, 0.46);
}

.ms-runner {
  margin: 0.35rem 0 0;
  color: var(--muted);
  font-size: clamp(0.9rem, 1.2vw, 1.05rem);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-variant-numeric: tabular-nums;
}

.panel {
  border: 1px solid var(--surface-border);
  background: var(--surface);
  border-radius: 0;
  padding: 0.95rem;
  display: grid;
  gap: 0.9rem;
  box-shadow: var(--shadow-md);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
}

.hidden {
  display: none;
}

.time-inputs {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.85rem;
}

label {
  display: grid;
  gap: 0.42rem;
  color: var(--muted);
  font-size: 0.8rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

input {
  width: 100%;
  border: 1px solid var(--surface-border);
  border-radius: 0;
  background: var(--surface-strong);
  color: var(--text);
  padding: 0.64rem 0.7rem;
  font-size: 1rem;
  outline: none;
  transition: border-color 160ms ease, box-shadow 160ms ease;
}

input:focus {
  border-color: rgba(92, 158, 161, 0.65);
  box-shadow: 0 0 0 4px rgba(60, 110, 113, 0.14);
}

.presets {
  display: flex;
  flex-wrap: wrap;
  gap: 0.58rem;
}

.audio-controls {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: flex-start;
  gap: 0.8rem;
  padding: 0.7rem 0.75rem;
  border: 1px solid var(--surface-border);
  border-radius: 0;
  background: rgba(26, 30, 30, 0.65);
}

.audio-toggle {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  margin: 0;
  color: var(--text);
  text-transform: none;
  letter-spacing: 0;
  font-size: 0.9rem;
}

.audio-toggle input {
  width: 1rem;
  height: 1rem;
  accent-color: var(--accent);
}

.audio-volume {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  margin: 0;
  color: var(--muted);
  text-transform: none;
  letter-spacing: 0;
}

.audio-volume span {
  font-size: 0.85rem;
}

.audio-volume input[type="range"] {
  width: 150px;
  padding: 0;
  border: 0;
  background: transparent;
}

.laps-wrap {
  border: 1px solid var(--surface-border);
  border-radius: 0;
  background: rgba(26, 30, 30, 0.55);
  padding: 0.7rem;
}

.laps-title {
  margin: 0 0 0.45rem;
  font-size: 0.82rem;
  color: var(--muted);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.laps-list {
  margin: 0;
  padding-left: 1.2rem;
  max-height: 160px;
  overflow: auto;
}

.laps-list li {
  margin: 0.2rem 0;
  color: var(--text);
  font-variant-numeric: tabular-nums;
}

.lap-split {
  color: var(--muted);
}

.laps-empty {
  color: var(--muted) !important;
}

.preset-btn,
.action-btn {
  border: 1px solid var(--surface-border);
  background: linear-gradient(180deg, rgba(60, 110, 113, 0.22), rgba(30, 34, 34, 0.85));
  color: var(--text);
  border-radius: 0;
  padding: 0.6rem 0.9rem;
  cursor: pointer;
  font-weight: 500;
  letter-spacing: 0.01em;
  transition: transform 120ms ease, border-color 140ms ease, background 140ms ease;
}

.preset-btn:hover,
.action-btn:hover {
  border-color: rgba(60, 110, 113, 0.5);
  transform: translateY(-1px);
}

.preset-btn:active,
.action-btn:active {
  transform: translateY(0);
}

.action-btn.primary {
  border-color: rgba(60, 110, 113, 0.65);
  background: linear-gradient(180deg, rgba(60, 110, 113, 0.45), rgba(45, 80, 82, 0.3));
}

.controls {
  display: flex;
  flex-wrap: wrap;
  gap: 0.68rem;
}

.help {
  margin-top: auto;
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  color: var(--muted);
  font-size: 0.83rem;
}

kbd {
  border: 1px solid var(--surface-border);
  border-radius: 4px;
  padding: 0.16rem 0.42rem;
  background: rgba(26, 30, 30, 0.95);
  color: var(--text);
}

.done .time-display {
  color: var(--danger);
}

@media (max-width: 700px) {
  .app {
    padding: 0.9rem;
  }

  .topbar {
    justify-content: center;
  }
}