:root {
  --accent: #f97316;
  --accent-soft: rgba(249, 115, 22, 0.16);
  --accent-strong: #ea580c;
  --work: #f97316;
  --rest: #38bdf8;
  --prep: #facc15;
  --done: #22c55e;
  --radius: 16px;
  --radius-sm: 11px;
  --shadow: 0 12px 40px rgba(0, 0, 0, 0.45);
  --mono: "SFMono-Regular", "Roboto Mono", "DejaVu Sans Mono", ui-monospace, Menlo, Consolas, monospace;
  --sans: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

/* ---------- Dark (default, sportlich) ---------- */
[data-theme="dark"] {
  --bg: #0a0a0a;
  --bg-grad-1: #131110;
  --bg-grad-2: #0a0a0a;
  --surface: #161514;
  --surface-2: #1f1d1b;
  --border: #2b2826;
  --text: #f4f1ee;
  --text-dim: #a7a09a;
  --text-faint: #6f6862;
  --display-text: #ffffff;
  --fastest: #22c55e;
  --slowest: #f43f5e;
}

/* ---------- Light ---------- */
[data-theme="light"] {
  --bg: #f4f2ef;
  --bg-grad-1: #fbf9f6;
  --bg-grad-2: #efece7;
  --surface: #ffffff;
  --surface-2: #f6f3ef;
  --border: #e2ddd6;
  --text: #1a1715;
  --text-dim: #6b635c;
  --text-faint: #9b938b;
  --display-text: #14110f;
  --fastest: #15803d;
  --slowest: #be123c;
  --accent-soft: rgba(249, 115, 22, 0.13);
  --shadow: 0 10px 30px rgba(120, 80, 30, 0.15);
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  min-height: 100%;
}

body {
  font-family: var(--sans);
  background: var(--bg);
  background-image: radial-gradient(120% 80% at 50% -10%, var(--bg-grad-1) 0%, var(--bg-grad-2) 60%);
  background-attachment: fixed;
  color: var(--text);
  -webkit-font-smoothing: antialiased;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  min-height: 100dvh;
  padding:
    env(safe-area-inset-top)
    env(safe-area-inset-right)
    env(safe-area-inset-bottom)
    env(safe-area-inset-left);
  overflow-x: hidden;
}

.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--accent);
  color: #1a0f00;
  padding: 10px 16px;
  border-radius: 0 0 var(--radius-sm) 0;
  z-index: 100;
  font-weight: 700;
}
.skip-link:focus { left: 0; }

/* ---------- Header ---------- */
.app-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 18px 8px;
  max-width: 640px;
  width: 100%;
  margin: 0 auto;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  font-size: 1.25rem;
  letter-spacing: -0.02em;
}
.brand-mark {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  border-radius: 12px;
  background: linear-gradient(145deg, var(--accent), var(--accent-strong));
  color: #1a0f00;
  box-shadow: 0 6px 18px rgba(249, 115, 22, 0.35);
}
.brand-name { color: var(--text); }
.brand-accent { color: var(--accent); }

.icon-btn {
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  cursor: pointer;
  transition: background 0.18s ease, transform 0.1s ease, border-color 0.18s ease;
}
.icon-btn:hover { border-color: var(--accent); }
.icon-btn:active { transform: scale(0.94); }
.ico-moon { display: none; }
[data-theme="light"] .ico-sun { display: none; }
[data-theme="light"] .ico-moon { display: block; }

/* ---------- Tabs ---------- */
.tabs {
  display: flex;
  gap: 6px;
  padding: 6px;
  margin: 6px auto 4px;
  max-width: 640px;
  width: calc(100% - 36px);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}
.tab {
  flex: 1;
  padding: 11px 8px;
  border: none;
  border-radius: 11px;
  background: transparent;
  color: var(--text-dim);
  font-weight: 700;
  font-size: 0.98rem;
  cursor: pointer;
  transition: background 0.18s ease, color 0.18s ease;
}
.tab.is-active {
  background: var(--accent);
  color: #1a0f00;
  box-shadow: 0 4px 14px rgba(249, 115, 22, 0.32);
}

/* ---------- Main / Panels ---------- */
main {
  flex: 1;
  width: 100%;
  max-width: 640px;
  margin: 0 auto;
  padding: 8px 18px 20px;
}
.panel { display: none; }
.panel.is-active { display: block; animation: fade 0.25s ease; }
@keyframes fade { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: none; } }

/* ---------- Display ---------- */
.display-wrap {
  text-align: center;
  padding: 26px 12px 22px;
  margin-top: 6px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}
.big-display {
  font-family: var(--mono);
  font-weight: 700;
  font-size: clamp(3.1rem, 17vw, 6rem);
  line-height: 1;
  color: var(--display-text);
  letter-spacing: -0.01em;
  font-variant-numeric: tabular-nums;
  word-break: keep-all;
}
.big-display .ms {
  font-size: 0.5em;
  color: var(--accent);
  vertical-align: baseline;
}
.sub-display {
  margin-top: 12px;
  color: var(--text-dim);
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: 0.02em;
}
.phase-label {
  display: inline-block;
  margin-bottom: 12px;
  padding: 5px 16px;
  border-radius: 999px;
  font-weight: 800;
  font-size: 0.85rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  background: var(--accent-soft);
  color: var(--accent);
}
.phase-work  { background: rgba(249,115,22,0.16); color: var(--work); }
.phase-rest  { background: rgba(56,189,248,0.16); color: var(--rest); }
.phase-prep  { background: rgba(250,204,21,0.18); color: var(--prep); }
.phase-done  { background: rgba(34,197,94,0.16);  color: var(--done); }

.progress {
  height: 8px;
  border-radius: 999px;
  background: var(--surface-2);
  overflow: hidden;
  margin: 16px auto 0;
  max-width: 320px;
}
.progress-bar {
  height: 100%;
  width: 0%;
  border-radius: 999px;
  background: var(--accent);
  transition: width 0.18s linear, background 0.25s ease;
}
.progress-bar.is-work { background: var(--work); }
.progress-bar.is-rest { background: var(--rest); }
.progress-bar.is-prep { background: var(--prep); }
.progress-bar.is-done { background: var(--done); }

/* phase tint on the whole display card */
.display-wrap.tint-work { box-shadow: 0 0 0 2px rgba(249,115,22,0.45), var(--shadow); }
.display-wrap.tint-rest { box-shadow: 0 0 0 2px rgba(56,189,248,0.45), var(--shadow); }
.display-wrap.tint-prep { box-shadow: 0 0 0 2px rgba(250,204,21,0.5), var(--shadow); }
.display-wrap.tint-done { box-shadow: 0 0 0 2px rgba(34,197,94,0.5), var(--shadow); }

/* ---------- Controls ---------- */
.controls {
  display: grid;
  grid-template-columns: 1fr 1.4fr 1fr;
  gap: 10px;
  margin: 18px 0 14px;
  align-items: stretch;
}
.btn {
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  font-family: var(--sans);
  font-weight: 700;
  font-size: 1rem;
  padding: 16px 10px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: transform 0.1s ease, background 0.18s ease, border-color 0.18s ease, opacity 0.18s ease;
  min-width: 0;
}
.btn:active { transform: scale(0.96); }
.btn:disabled { opacity: 0.4; cursor: not-allowed; }
.btn-ghost:hover:not(:disabled) { border-color: var(--accent); color: var(--accent); }
.btn-primary {
  background: linear-gradient(145deg, var(--accent), var(--accent-strong));
  border-color: transparent;
  color: #1a0f00;
  box-shadow: 0 8px 22px rgba(249, 115, 22, 0.3);
}
.btn-primary:hover:not(:disabled) { filter: brightness(1.06); }
.btn-big { font-size: 1.18rem; }
.btn-primary.is-running {
  background: linear-gradient(145deg, #f43f5e, #be123c);
  box-shadow: 0 8px 22px rgba(244, 63, 94, 0.32);
  color: #fff;
}

/* ---------- Laps ---------- */
.laps-head {
  display: grid;
  grid-template-columns: 1fr 1.3fr 1.3fr;
  gap: 8px;
  padding: 8px 14px;
  color: var(--text-faint);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}
.laps {
  list-style: none;
  margin: 0;
  padding: 0;
  border-radius: var(--radius);
  overflow: hidden;
}
.lap {
  display: grid;
  grid-template-columns: 1fr 1.3fr 1.3fr;
  gap: 8px;
  align-items: center;
  padding: 14px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-top: none;
  animation: lapIn 0.25s ease;
}
.lap:first-child { border-top: 1px solid var(--border); border-radius: var(--radius) var(--radius) 0 0; }
.lap:last-child { border-radius: 0 0 var(--radius) var(--radius); }
.lap:only-child { border-radius: var(--radius); }
@keyframes lapIn { from { opacity: 0; transform: translateY(-6px); } to { opacity: 1; transform: none; } }
.lap-num {
  font-weight: 800;
  color: var(--text-dim);
}
.lap-time, .lap-total {
  font-family: var(--mono);
  font-variant-numeric: tabular-nums;
  font-weight: 600;
}
.lap-total { color: var(--text-dim); }
.lap.is-fastest .lap-num::after { content: " ↓"; color: var(--fastest); }
.lap.is-slowest .lap-num::after { content: " ↑"; color: var(--slowest); }
.lap.is-fastest .lap-time { color: var(--fastest); }
.lap.is-slowest .lap-time { color: var(--slowest); }

.empty-hint {
  text-align: center;
  color: var(--text-faint);
  font-size: 0.9rem;
  padding: 22px 16px;
  margin: 0;
}

/* ---------- Settings (Intervall) ---------- */
.settings {
  margin-top: 22px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 8px 16px 16px;
}
.field {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 12px 0;
  border-bottom: 1px solid var(--border);
}
.field label {
  font-weight: 600;
  color: var(--text);
  font-size: 0.95rem;
}
.stepper {
  display: flex;
  align-items: center;
  gap: 4px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 11px;
  padding: 3px;
}
.step-btn {
  width: 38px;
  height: 38px;
  border: none;
  border-radius: 8px;
  background: transparent;
  color: var(--accent);
  font-size: 1.4rem;
  font-weight: 700;
  line-height: 1;
  cursor: pointer;
  transition: background 0.15s ease;
}
.step-btn:hover { background: var(--accent-soft); }
.step-btn:active { transform: scale(0.92); }
.stepper input {
  width: 62px;
  border: none;
  background: transparent;
  color: var(--text);
  text-align: center;
  font-family: var(--mono);
  font-size: 1.05rem;
  font-weight: 700;
  -moz-appearance: textfield;
}
.stepper input::-webkit-outer-spin-button,
.stepper input::-webkit-inner-spin-button { -webkit-appearance: none; margin: 0; }

.switch-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 14px 0;
  border-bottom: 1px solid var(--border);
  cursor: pointer;
  user-select: none;
}
.switch-row:last-child { border-bottom: none; }
.switch-row span:first-child { font-weight: 600; font-size: 0.95rem; }
.switch-row input { position: absolute; opacity: 0; width: 0; height: 0; }
.switch {
  position: relative;
  flex: 0 0 auto;
  width: 50px;
  height: 28px;
  border-radius: 999px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  transition: background 0.2s ease, border-color 0.2s ease;
}
.switch::after {
  content: "";
  position: absolute;
  top: 2px;
  left: 2px;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--text-dim);
  transition: transform 0.2s ease, background 0.2s ease;
}
.switch-row input:checked + .switch {
  background: var(--accent);
  border-color: var(--accent);
}
.switch-row input:checked + .switch::after {
  transform: translateX(22px);
  background: #1a0f00;
}

/* ---------- Toasts ---------- */
.toast-host {
  position: fixed;
  left: 50%;
  bottom: calc(20px + env(safe-area-inset-bottom));
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  z-index: 200;
  width: min(420px, calc(100% - 32px));
  pointer-events: none;
}
.toast {
  pointer-events: auto;
  background: var(--surface);
  border: 1px solid var(--border);
  border-left: 4px solid var(--accent);
  color: var(--text);
  padding: 13px 16px;
  border-radius: 12px;
  box-shadow: var(--shadow);
  font-weight: 600;
  font-size: 0.95rem;
  width: 100%;
  text-align: center;
  animation: toastIn 0.22s ease;
}
.toast.is-work { border-left-color: var(--work); }
.toast.is-rest { border-left-color: var(--rest); }
.toast.is-prep { border-left-color: var(--prep); }
.toast.is-done { border-left-color: var(--done); }
.toast.is-out { animation: toastOut 0.25s ease forwards; }
@keyframes toastIn { from { opacity: 0; transform: translateY(12px); } to { opacity: 1; transform: none; } }
@keyframes toastOut { to { opacity: 0; transform: translateY(12px); } }

/* ---------- Footer ---------- */
.app-footer {
  text-align: center;
  padding: 12px 16px calc(14px + env(safe-area-inset-bottom));
  color: var(--text-faint);
  font-size: 0.8rem;
  max-width: 640px;
  width: 100%;
  margin: 0 auto;
}

/* ---------- Focus ---------- */
:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 2px;
  border-radius: 6px;
}

/* ---------- Reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
}

/* ---------- Narrow safety ---------- */
@media (max-width: 360px) {
  .stepper input { width: 48px; }
  .step-btn { width: 34px; height: 34px; }
  .controls { gap: 7px; }
  .btn { padding: 14px 6px; }
}