:root {
  --bg: #1a1d21;
  --panel: #24282e;
  --panel2: #1e2126;
  --input: #1b1e22;
  --btn: #2d323a;
  --border: #363b42;
  --text: #e8eaed;
  --muted: #9aa0a6;
  --accent: #ffb74d;
  --accent-dark: #b57a2a;
  --on-accent: #1a1d21;
  --good: #81c784;
  --bad: #e57373;
  --overlay: rgba(0, 0, 0, 0.65);
  --radius: 12px;
}

:root[data-theme="light"] {
  --bg: #f5f3ef;
  --panel: #ffffff;
  --panel2: #ece9e3;
  --input: #ffffff;
  --btn: #e6e2da;
  --border: #d4cfc5;
  --text: #26221b;
  --muted: #7a736a;
  --accent: #b56a00;
  --accent-dark: #8a5100;
  --on-accent: #ffffff;
  --good: #2e7d32;
  --bad: #c62828;
  --overlay: rgba(0, 0, 0, 0.4);
}

* { box-sizing: border-box; }

html { font-size: 17px; }

body {
  margin: 0;
  min-height: 100vh;
  min-height: 100dvh;
  background: var(--bg);
  color: var(--text);
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  max-width: 540px;
  margin-inline: auto;
  -webkit-tap-highlight-color: transparent;
}

header {
  padding: 0.6rem 1rem;
  border-bottom: 1px solid var(--border);
}

header h1 {
  font-size: 1.05rem;
  margin: 0;
  font-weight: 600;
  color: var(--muted);
}

.subtitle {
  font-size: 0.8rem;
  font-weight: 400;
  color: var(--muted);
  opacity: 0.75;
}

.header-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.4rem;
}

.header-actions { display: flex; gap: 0.4rem; }

.icon-btn {
  appearance: none;
  background: var(--btn);
  border: 1px solid var(--border);
  color: var(--accent);
  border-radius: 50%;
  width: 40px;
  height: 40px;
  font-size: 1.1rem;
  font-weight: 700;
  cursor: pointer;
}

.lang-bar {
  gap: 0.15rem;
}

.lang-btn {
  appearance: none;
  background: transparent;
  border: 1px solid transparent;
  border-radius: 8px;
  color: var(--muted);
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  padding: 0.4rem 0.6rem;
  cursor: pointer;
  line-height: 1.3;
}

.lang-btn.selected {
  border-color: var(--accent);
  background: var(--btn);
  color: var(--accent);
}

nav { display: flex; gap: 0.25rem; }

main { padding: 0.75rem 1rem 1rem; }

/* keeps the body at least viewport tall so short pages still
   push the footer area to the bottom */
body {
  display: flex;
  flex-direction: column;
}

main { flex: 1; }

.icon-btn {
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.back-link { color: inherit; text-decoration: none; }

/* ---------- Page meta (scrolls with content, above tabs) ---------- */
.page-meta {
  text-align: center;
  color: var(--muted);
  font-size: 0.85rem;
  padding: 1rem 1rem 0.75rem;
}

.page-meta nav { justify-content: center; margin-bottom: 0.4rem; }

.page-meta a { color: var(--accent); text-decoration: none; }
.dot { margin: 0 0.35rem; }

/* ---------- Help modal ---------- */
.modal {
  position: fixed;
  inset: 0;
  background: var(--overlay);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  z-index: 100;
}

.modal-card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.3rem;
  max-width: 420px;
  width: 100%;
}

.modal-card h2 {
  margin: 0 0 0.6rem;
  font-size: 1.2rem;
  color: var(--accent);
}

.modal-card p {
  margin: 0 0 1rem;
  line-height: 1.5;
}

.modal-card .help-tip {
  font-size: 0.9rem;
  color: var(--muted);
  border-left: 3px solid var(--accent);
  padding-left: 0.7rem;
  margin-bottom: 1rem;
}

.modal-card .help-disclaimer {
  font-size: 0.85rem;
  color: var(--muted);
  font-style: italic;
  margin-bottom: 1rem;
}

.modal-card .help-links {
  font-size: 0.9rem;
  color: var(--muted);
  margin-bottom: 1rem;
}

.modal-card .help-links a { color: var(--accent); text-decoration: none; }

.modal-card .btn { width: 100%; }

fieldset {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--panel);
  margin: 0 0 1rem;
  padding: 0.9rem;
}

legend {
  padding: 0 0.5rem;
  color: var(--muted);
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.device-name {
  color: var(--muted);
  font-size: 0.9rem;
  margin-bottom: 0.5rem;
  text-align: center;
}

/* ---------- Buttons ---------- */
.btn {
  appearance: none;
  border: 1px solid var(--border);
  background: var(--btn);
  color: var(--text);
  border-radius: var(--radius);
  font-size: 1.15rem;
  padding: 0.9rem 0.5rem;
  min-height: 52px;
  cursor: pointer;
  touch-action: manipulation;
}

.btn:active { transform: scale(0.96); }

.btn.selected {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--on-accent);
  font-weight: 700;
}

.btn.small { font-size: 0.95rem; padding: 0.5rem 0.9rem; min-height: 44px; }

.btn.fine { font-size: 0.95rem; color: var(--muted); }

.btn.danger { color: var(--bad); border-color: var(--bad); width: 100%; margin-top: 0.6rem; }

.btn-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.5rem;
  margin-bottom: 0.6rem;
}

.time-group .btn-grid { margin-bottom: 0.5rem; }

.fine-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.5rem;
}

.custom-row {
  display: flex;
  gap: 0.5rem;
  margin-top: 0.6rem;
}

.custom-row input { flex: 1; }

input, select {
  background: var(--input);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 8px;
  font-size: 1.05rem;
  padding: 0.6rem 0.7rem;
  min-height: 44px;
}

input:focus, select:focus { outline: 2px solid var(--accent-dark); }

/* ---------- Zeit-Eingabe ---------- */
.time-display {
  text-align: center;
  font-size: 2.6rem;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  margin: 0.2rem 0 0.8rem;
}

.time-group {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--panel2);
  padding: 0.7rem;
  margin-bottom: 0.8rem;
}

.time-group:last-child { margin-bottom: 0; }

.group-label {
  display: block;
  color: var(--muted);
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 0.5rem;
}

/* ---------- Geräte-Chips ---------- */
.device-box {
  padding: 0.7rem 0.9rem;
}

.device-chips {
  justify-content: center;
  margin-bottom: 0;
}

.device-chips .chip {
  cursor: pointer;
  padding: 0.6rem 1rem;
  font-size: 1rem;
}

.device-chips .chip.selected {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--on-accent);
  font-weight: 700;
}
/* ---------- Ergebnis ---------- */
.result-empty { color: var(--muted); text-align: center; padding: 0.5rem; }

.result-main { text-align: center; }

.result-step {
  font-size: 1.15rem;
  color: var(--muted);
}

.result-time {
  font-size: 3.4rem;
  font-weight: 800;
  font-variant-numeric: tabular-nums;
  color: var(--accent);
  line-height: 1.15;
}

.result-energy { font-size: 0.9rem; color: var(--muted); margin-top: 0.2rem; }

.result-energy .over { color: var(--bad); }
.result-energy .under { color: var(--bad); }
.result-energy .ok { color: var(--good); }

.link-btn {
  background: none;
  border: none;
  color: var(--accent);
  font-size: 0.95rem;
  margin-top: 0.6rem;
  cursor: pointer;
  text-decoration: underline;
}

/* ---------- Stufen-Tabelle ---------- */
.steps-table { margin-top: 0.7rem; }

.step-row {
  display: grid;
  grid-template-columns: 1.2fr 1fr 1fr;
  gap: 0.4rem;
  align-items: center;
  width: 100%;
  background: var(--btn);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  font-size: 0.95rem;
  padding: 0.65rem 0.7rem;
  margin-bottom: 0.4rem;
  cursor: pointer;
  text-align: left;
}

.step-row.best { border-color: var(--accent); }
.step-row.manual { background: var(--accent-dark); }
.step-row .t { font-weight: 700; font-variant-numeric: tabular-nums; }
.step-row .dev { text-align: right; font-size: 0.85rem; }
.dev.ok { color: var(--good); }
.dev.bad { color: var(--bad); }

/* ---------- Einstellungen ---------- */
.field {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  margin-bottom: 0.8rem;
}

.field > span { color: var(--muted); font-size: 0.9rem; }

.mode-row { display: flex; gap: 0.5rem; }

.mode-row .btn { flex: 1; }

.chip.selected {
  background: var(--accent-dark);
  border-color: var(--accent);
}

.chip-list { display: flex; flex-wrap: wrap; gap: 0.45rem; }

.chip {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background: var(--btn);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 0.45rem 0.8rem;
  font-size: 1rem;
}

.chip button {
  background: none;
  border: none;
  color: var(--bad);
  font-size: 1.1rem;
  line-height: 1;
  cursor: pointer;
  padding: 0.1rem 0.2rem;
}

.timing-list { display: flex; flex-direction: column; gap: 0.5rem; margin-bottom: 0.7rem; }

.timing-row {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.95rem;
}

.timing-row input { width: 4.5rem; min-width: 0; }
.timing-row .unit {
  white-space: nowrap;
  flex: 1;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: baseline;
}
.timing-row .u-left { text-align: left; }
.timing-row .u-arrow { text-align: center; padding: 0 0.25rem; }
.timing-row .u-right { text-align: right; }
.timing-row .spacer { flex: 1; }
.timing-row button {
  background: none;
  border: none;
  color: var(--bad);
  font-size: 1.2rem;
  cursor: pointer;
}

.data-row { display: flex; gap: 0.5rem; }
.data-row .btn { flex: 1; }

.hint { color: var(--muted); font-size: 0.85rem; margin: 0.4rem 0 0; }

.hidden { display: none !important; }