/* ── Running Pace Calculator — web styles (compact) ───────────────────── */

:root {
  --bg:        #ebeef8;
  --surface:   #ffffff;
  --accent:    #2563eb;
  --accent-2:  #3b82f6;
  --text:      #0f172a;
  --muted:     #64748b;
  --divider:   #cbd5e1;
  --row-odd:   #f1f5f9;
  --hdr-bg:    #2563eb;
  --hdr-fg:    #ffffff;
  --red:       #c81e1e;
  --danger:    #dc2626;
  --shadow:    0 1px 2px rgba(15,23,42,.05), 0 2px 6px rgba(15,23,42,.03);
  --radius:    8px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font: 13px/1.35 "Segoe UI", system-ui, -apple-system, sans-serif;
}

.app {
  max-width: 880px;
  margin: 0 auto;
  padding: 10px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.header h1 {
  margin: 2px 0 0;
  font-size: clamp(17px, 3.2vw, 22px);
  color: var(--text);
}

.card {
  background: var(--surface);
  border-radius: var(--radius);
  padding: 10px 12px;
  box-shadow: var(--shadow);
}

h2 {
  margin: 8px 0 6px;
  font-size: 11px;
  letter-spacing: .04em;
  text-transform: uppercase;
  color: var(--muted);
}
h2:first-child { margin-top: 0; }

/* ── Form fields ─────────────────────────────────────────────────────── */
.field {
  display: block;
  margin-bottom: 8px;
}
.field > span {
  display: block;
  font-size: 11px;
  color: var(--muted);
  margin-bottom: 2px;
}

input[type=number],
input[type=text],
select {
  width: 100%;
  padding: 5px 7px;
  font: inherit;
  font-size: 14px;        /* keep >=14px to limit iOS zoom while staying compact */
  color: var(--text);
  background: #fff;
  border: 1px solid var(--divider);
  border-radius: 5px;
  outline: none;
  transition: border-color .15s;
}
input:focus, select:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 2px rgba(37,99,235,.15);
}
input[readonly] {
  background: #f8fafc;
  color: var(--muted);
}

input[type=number]::-webkit-outer-spin-button,
input[type=number]::-webkit-inner-spin-button {
  -webkit-appearance: none; margin: 0;
}
input[type=number] { -moz-appearance: textfield; }

.time-row {
  display: grid;
  grid-template-columns: 1fr auto 1fr auto 1fr;
  gap: 4px;
  align-items: center;
}
.time-row .sep,
.start-time .sep {
  font-weight: 700;
  text-align: center;
  color: var(--muted);
}

/* ── Buttons ─────────────────────────────────────────────────────────── */
.btn {
  appearance: none;
  border: 1px solid var(--divider);
  background: #fff;
  color: var(--text);
  padding: 6px 10px;
  font: inherit;
  font-size: 12.5px;
  border-radius: 5px;
  cursor: pointer;
  transition: background .12s, border-color .12s, transform .05s;
}
.btn:hover  { background: #f8fafc; border-color: #94a3b8; }
.btn:active { transform: translateY(1px); }
.btn.full   { width: 100%; margin-top: 6px; }

.btn-secondary {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}
.btn-secondary:hover { background: #1d4ed8; border-color: #1d4ed8; }

.btn-danger {
  background: var(--danger);
  color: #fff;
  border-color: var(--danger);
}
.btn-danger:hover { background: #b91c1c; border-color: #b91c1c; }

.btn-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6px;
  margin-top: 6px;
}
.btn-row.triple { grid-template-columns: 1fr 1fr 1fr; }

/* ── Results panel ───────────────────────────────────────────────────── */
.result-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4px 12px;
}
.result-grid .label {
  font-size: 10.5px;
  color: var(--muted);
}
.result-grid .value {
  font-size: 14.5px;
  font-weight: 700;
  color: var(--accent);
}

/* ── Splits ──────────────────────────────────────────────────────────── */
.splits-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 4px;
}
.splits-count, .start-time {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 11.5px;
  color: var(--muted);
}
.splits-count select { width: auto; padding: 3px 6px; font-size: 12.5px; }
.start-time input { width: 44px; text-align: center; padding: 3px 4px; }

.splits-title-row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
}
.splits-title-row h2 { margin-top: 4px; }
.total-time {
  font-size: 12.5px;
  color: var(--text);
}
.total-time .tt-label {
  color: var(--muted);
  font-size: 10.5px;
  text-transform: uppercase;
  letter-spacing: .04em;
  margin-right: 4px;
}
.total-time #totalTime {
  font-weight: 700;
  color: var(--accent);
  font-size: 14px;
}

.split-table-wrap {
  overflow-x: auto;
}

.split-header,
.split-row {
  display: grid;
  /* Distance | Time | Pace | +/- | Label | Cumulative | TimeOfDay */
  grid-template-columns: 68px 64px 60px 30px 1fr 1fr 1fr;
  gap: 4px;
  align-items: center;
  padding: 2px 0;
}

.split-header {
  background: var(--hdr-bg);
  color: var(--hdr-fg);
  padding: 4px 6px;
  border-radius: 5px 5px 0 0;
  font-size: 10.5px;
  font-weight: 600;
}
.split-header > div { text-align: center; }

.split-row {
  background: #fff;
  padding: 3px 4px;
  border-bottom: 1px solid #eef2f7;
}
.split-row:nth-child(even) { background: var(--row-odd); }

.split-row input.dist,
.split-row input.label,
.split-row input.time {
  padding: 3px 5px;
  font-size: 12.5px;
  height: 24px;
}
.split-row .pace,
.split-row .cumu,
.split-row .tod {
  font-weight: 700;
  color: var(--accent);
  font-size: 12px;
  text-align: center;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.adj {
  display: flex;
  flex-direction: column;
  gap: 1px;
  align-items: center;
}
.adj button {
  appearance: none;
  border: 1px solid var(--divider);
  background: #fff;
  width: 26px;
  height: 14px;
  line-height: 1;
  font-size: 11px;
  border-radius: 3px;
  cursor: pointer;
  padding: 0;
}
.adj button:hover { background: #f1f5f9; }

.adj.hidden { visibility: hidden; }

.warning {
  margin-top: 6px;
  min-height: 14px;
  color: var(--red);
  font-weight: 700;
  font-size: 12px;
}

/* ── Mobile ──────────────────────────────────────────────────────────── */
@media (max-width: 720px) {
  .app  { padding: 8px; gap: 8px; }
  .card { padding: 10px; }

  .split-header { display: none; }

  .split-row {
    grid-template-columns: 1fr 1fr;
    gap: 4px 8px;
    padding: 8px;
    border: 1px solid var(--divider);
    border-radius: 6px;
    margin-bottom: 6px;
    background: #fff;
  }
  .split-row:nth-child(even) { background: #fff; }

  .split-row > * { position: relative; }
  .split-row > *::before {
    content: attr(data-label);
    display: block;
    font-size: 10px;
    color: var(--muted);
    margin-bottom: 1px;
    text-transform: uppercase;
    letter-spacing: .04em;
  }
  .split-row .label-wrap,
  .split-row .cumu-wrap,
  .split-row .tod-wrap {
    grid-column: 1 / -1;
  }
  .split-row .pace,
  .split-row .cumu,
  .split-row .tod { text-align: left; }

  .adj {
    flex-direction: row;
    justify-content: flex-start;
    gap: 6px;
  }
  .adj button {
    width: 32px;
    height: 28px;
    font-size: 14px;
  }

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