/* Seitenspezifische Styles für den Pace-Rechner.
   Basis-Tokens und Komponenten kommen aus app.css. */

.tool-section {
  padding: clamp(2.5rem, 6vw, 4.5rem) 0;
}

.tool-header {
  max-width: 640px;
  margin-bottom: 2.25rem;
}

.tool-header h1 {
  font-size: clamp(2.4rem, 6vw, 3.8rem);
  margin-bottom: 1rem;
}

.tool-header .lead {
  margin-bottom: 0;
}

.tool-card {
  max-width: 640px;
  padding: clamp(1.5rem, 4vw, 2.25rem);
}

.tool-card:hover {
  transform: none;
  border-color: var(--border);
  box-shadow: var(--shadow);
}

/* Umschalter Pace / Zeit */
.segmented {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.3rem;
  margin-bottom: 1.75rem;
  padding: 0.3rem;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--surface-soft);
}

.segmented button {
  padding: 0.7rem 0.9rem;
  border: 0;
  border-radius: 999px;
  background: transparent;
  color: var(--muted);
  font: inherit;
  font-weight: 700;
  cursor: pointer;
  transition: background 160ms ease, color 160ms ease;
}

.segmented button:hover {
  color: var(--text);
}

.segmented button.active {
  background: var(--text);
  color: var(--bg);
}

.field {
  margin-bottom: 1.35rem;
}

.field:last-of-type {
  margin-bottom: 0;
}

.field > label,
.field-label {
  display: block;
  margin-bottom: 0.55rem;
  color: var(--text);
  font-size: 0.82rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.field input {
  width: 100%;
  padding: 0.9rem 1rem;
  border: 1px solid var(--border);
  border-radius: 16px;
  background: var(--surface);
  color: var(--text);
  font: inherit;
  font-size: 1rem;
  transition: border-color 160ms ease, box-shadow 160ms ease;
}

.field input:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 4px var(--accent-soft);
}

.field input::placeholder {
  color: var(--muted);
  opacity: 0.75;
}

.input-grid {
  display: grid;
  gap: 0.5rem;
}

.input-grid--3 {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.input-grid--2 {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.hint {
  margin: 0.55rem 0 0;
  color: var(--muted);
  font-size: 0.82rem;
}

.chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 0.75rem;
}

.chip {
  padding: 0.5rem 0.9rem;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--surface);
  color: var(--muted);
  font: inherit;
  font-size: 0.88rem;
  font-weight: 700;
  cursor: pointer;
  transition: border-color 160ms ease, background 160ms ease, color 160ms ease;
}

.chip:hover {
  border-color: rgba(31, 58, 95, 0.35);
  color: var(--text);
}

.chip.active {
  border-color: rgba(31, 58, 95, 0.35);
  background: var(--accent-soft);
  color: var(--accent);
}

.tool-actions {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 0.6rem;
  margin-top: 1.75rem;
}

.tool-actions .btn {
  width: 100%;
  border: 0;
  font: inherit;
  font-weight: 750;
  cursor: pointer;
}

.tool-actions .btn--secondary {
  border: 1px solid var(--border);
  min-width: 3.4rem;
  font-size: 1.15rem;
}

/* Ergebnis & Fehler */
.result {
  display: none;
  margin-top: 1.5rem;
  padding: 1.5rem;
  border: 1px solid rgba(31, 58, 95, 0.22);
  border-radius: var(--radius);
  background: var(--accent-soft);
}

.result.show {
  display: block;
}

.result-label {
  margin: 0 0 0.4rem;
  color: var(--accent);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.result-value {
  margin: 0;
  font-size: clamp(2.2rem, 8vw, 3.2rem);
  font-weight: 800;
  line-height: 1.05;
  letter-spacing: -0.05em;
}

.result-sub {
  margin: 0.6rem 0 0;
  color: var(--muted);
  font-size: 0.95rem;
}

.error {
  display: none;
  margin-top: 1.25rem;
  padding: 0.9rem 1.1rem;
  border: 1px solid rgba(153, 27, 27, 0.25);
  border-radius: 16px;
  background: rgba(220, 38, 38, 0.08);
  color: #991b1b;
  font-size: 0.92rem;
}

.error.show {
  display: block;
}

.is-hidden-field {
  display: none;
}

@media (max-width: 460px) {
  .tool-actions {
    grid-template-columns: 1fr;
  }

  .tool-actions .btn--secondary {
    width: 100%;
  }
}