:root {
  color-scheme: dark;
  --page-bg: #0f1419;
  --card-bg: #182028;
  --bg-panel: #202a33;
  --bg-muted: #26323d;
  --surface: rgba(255, 255, 255, 0.04);
  --surface-strong: rgba(255, 255, 255, 0.08);
  --line: rgba(255, 255, 255, 0.1);
  --text: #f6f5ef;
  --text-dim: #b6c0cb;
  --accent: #e7a33e;
  --accent-soft: rgba(231, 163, 62, 0.2);
  --good: #39b36d;
  --warn: #d7b445;
  --shadow: 0 20px 50px rgba(0, 0, 0, 0.35);
  --radius: 22px;
  --radius-sm: 14px;
  --bottom-safe: calc(env(safe-area-inset-bottom, 0px) + 16px);
  --top-safe: calc(env(safe-area-inset-top, 0px) + 16px);
  --font-heading: "Avenir Next", "SF Pro Display", "Helvetica Neue", sans-serif;
  --font-body: "Avenir", "SF Pro Text", "Helvetica Neue", sans-serif;
}

* {
  box-sizing: border-box;
  -webkit-tap-highlight-color: transparent;
}

html,
body {
  margin: 0;
  min-height: 100%;
  background: var(--page-bg);
  color: var(--text);
  font-family: var(--font-body);
}

body {
  min-height: 100dvh;
}

button,
input {
  font: inherit;
  color: inherit;
}

button {
  cursor: pointer;
  border: 0;
}

.app-shell {
  width: min(100vw, 430px);
  min-height: 100dvh;
  margin: 0 auto;
  padding: calc(env(safe-area-inset-top, 0px) + 10px) 14px calc(env(safe-area-inset-bottom, 0px) + 10px);
}

.screen {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.screen-header {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 2px 2px 0;
}

.screen-header h1,
.card-title,
.result-value {
  margin: 0;
  font-family: var(--font-heading);
  letter-spacing: 0.02em;
}

.screen-header h1 {
  font-size: 1.9rem;
  line-height: 1;
}

.screen-header p,
.hint {
  margin: 0;
  color: var(--text-dim);
  font-size: 0.92rem;
  line-height: 1.45;
}

.card {
  background:
    linear-gradient(rgba(231, 163, 62, 0.08), rgba(231, 163, 62, 0.08)),
    var(--card-bg);
  border: 1px solid rgba(231, 163, 62, 0.24);
  border-radius: var(--radius);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.03),
    var(--shadow);
  padding: 14px;
}

.stack {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.lap-row {
  display: grid;
  grid-template-columns: minmax(0, 1.45fr) minmax(104px, 0.75fr);
  align-items: end;
  gap: 10px;
}

.field {
  display: flex;
  flex-direction: column;
  gap: 7px;
}

.field label {
  color: var(--text-dim);
  font-size: 0.88rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  text-transform: uppercase;
}

.stepper-wrap {
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr) 42px;
  gap: 7px;
}

.step-button {
  min-height: 54px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--bg-muted);
  color: var(--accent);
  font-size: 1.55rem;
  font-weight: 900;
  line-height: 1;
}

.step-button:active {
  transform: translateY(1px);
  background: var(--surface-strong);
}

.input-wrap {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: end;
  gap: 10px;
  min-height: 58px;
  padding: 8px 12px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--bg-panel);
}

.compact-input {
  padding-right: 10px;
  padding-left: 10px;
}

.input-wrap:focus-within {
  border-color: rgba(231, 163, 62, 0.7);
  box-shadow: 0 0 0 3px var(--accent-soft);
}

input {
  width: 100%;
  min-width: 0;
  border: 0;
  outline: 0;
  background: transparent;
  font-size: 1.65rem;
  font-weight: 800;
  line-height: 1.1;
}

input::placeholder {
  color: rgba(246, 245, 239, 0.3);
}

.unit {
  padding-bottom: 3px;
  color: var(--text-dim);
  font-size: 0.86rem;
  font-weight: 700;
}

.walk-lap-card {
  min-height: 54px;
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--surface-strong);
}

.walk-lap-card span {
  display: block;
  color: var(--text-dim);
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
}

.walk-lap-card strong {
  display: block;
  margin-top: 3px;
  overflow-wrap: anywhere;
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 900;
  letter-spacing: 0.02em;
}

.result-grid {
  display: grid;
  gap: 8px;
}

.result {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 12px;
  padding: 11px 12px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--surface);
}

.result-label {
  color: var(--text-dim);
  font-size: 0.9rem;
  font-weight: 700;
}

.result-value {
  font-size: 1.22rem;
  font-weight: 800;
  text-align: right;
  white-space: nowrap;
}

.meta-strip {
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
}

.meta {
  min-width: 0;
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--surface-strong);
}

.meta span {
  display: block;
  color: var(--text-dim);
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
}

.meta strong {
  display: block;
  margin-top: 4px;
  overflow-wrap: anywhere;
  font-size: 1.05rem;
}

.warning {
  color: var(--warn);
  font-size: 0.9rem;
  font-weight: 700;
}

@media (max-width: 360px) {
  .app-shell {
    padding-right: 12px;
    padding-left: 12px;
  }

  input {
    font-size: 1.42rem;
  }

  .lap-row {
    grid-template-columns: 1fr;
  }

  .result {
    grid-template-columns: 1fr;
  }

  .result-value {
    text-align: left;
  }
}