*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --black: #000;
  --white: #fff;
  --grey-1: #111;
  --grey-3: #333;
  --grey-6: #666;
  --grey-9: #999;
  --grey-c: #ccc;
  --grey-e: #eee;
  --grey-f: #f7f7f7;
  --font: 'Times New Roman', Times, serif;
}

html { font-size: 16px; }

body {
  font-family: var(--font);
  background: var(--white);
  color: var(--black);
  line-height: 1.5;
}

.page {
  max-width: 860px;
  margin: 0 auto;
  padding: 24px 20px 64px;
}

/* ── Rules ── */
.rule { width: 100%; border: none; }
.rule--thick { border-top: 3px solid var(--black); margin: 0; }
.rule--thin  { border-top: 1px solid var(--grey-c); margin: 20px 0; }

/* ── Masthead ── */
.masthead { text-align: center; padding: 12px 0 8px; }
.masthead-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 0;
}
.masthead-home {
  font-family: var(--font);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--grey-6);
  text-decoration: none;
  white-space: nowrap;
  transition: color 0.12s;
}
.masthead-home:hover { color: var(--black); }
.masthead-title {
  font-size: clamp(28px, 6vw, 52px);
  font-weight: 700;
  font-style: italic;
  letter-spacing: -1px;
  flex: 1;
  text-align: center;
}
.masthead-meta {
  font-size: 22px;
  font-weight: 700;
  font-style: normal;
  color: var(--black);
  white-space: nowrap;
  min-width: 80px;
  text-align: right;
  letter-spacing: -0.5px;
}

/* ── Inline PIN unlock ── */
.unlock-row {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-top: 2px;
  font-size: 13px;
  color: var(--grey-6);
  font-style: italic;
}
.pin-inline {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 10px;
  flex-wrap: wrap;
}
#pin-input {
  font-family: var(--font);
  font-size: 18px;
  font-weight: 700;
  width: 100px;
  border: none;
  border-bottom: 2px solid var(--black);
  padding: 2px 4px;
  outline: none;
  background: transparent;
  letter-spacing: 0.15em;
}
#pin-submit {
  font-family: var(--font);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  background: var(--black);
  color: var(--white);
  border: none;
  padding: 7px 18px;
  cursor: pointer;
}
#pin-submit:hover { opacity: 0.75; }
#pin-error {
  font-size: 12px;
  color: var(--grey-6);
  font-style: italic;
  width: 100%;
  margin-top: 2px;
}
.masthead-sub {
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--grey-6);
  padding: 6px 0 10px;
}

/* ── Sections ── */
.section { padding: 16px 0; }
.section-heading {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--grey-6);
  margin-bottom: 14px;
  font-family: var(--font);
}
.section-heading-row {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 14px;
}
.section-heading-row .section-heading { margin-bottom: 0; }
.section-note {
  font-size: 12px;
  color: var(--grey-6);
  font-style: italic;
  margin-bottom: 12px;
}

/* ── Entry form ── */
.entry-row {
  display: flex;
  gap: 16px;
  align-items: flex-end;
  flex-wrap: wrap;
}
.field-label {
  display: block;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--grey-6);
  margin-bottom: 6px;
}
#time-input {
  width: 80px;
  font-family: var(--font);
  font-size: 28px;
  font-weight: 700;
  text-align: center;
  border: none;
  border-bottom: 2px solid var(--black);
  padding: 4px 0;
  outline: none;
  background: transparent;
  letter-spacing: 0.04em;
}
#time-input:focus { border-bottom-color: var(--black); }
#time-input::placeholder { color: var(--grey-c); font-weight: 400; }

.date-nav {
  display: flex;
  align-items: center;
  gap: 6px;
  border-bottom: 2px solid var(--black);
  padding-bottom: 4px;
}
.date-nav button {
  background: none;
  border: none;
  font-family: var(--font);
  font-size: 18px;
  cursor: pointer;
  color: var(--black);
  padding: 0 4px;
  line-height: 1;
  transition: opacity 0.1s;
}
.date-nav button:hover { opacity: 0.5; }
.date-nav button:disabled { opacity: 0.2; cursor: default; }
#date-input {
  font-family: var(--font);
  font-size: 15px;
  border: none;
  outline: none;
  background: transparent;
  color: var(--black);
  cursor: pointer;
  padding: 2px 0;
}
#date-input::-webkit-calendar-picker-indicator { opacity: 0.4; cursor: pointer; }

#submit-btn {
  font-family: var(--font);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  background: var(--black);
  color: var(--white);
  border: none;
  padding: 9px 24px;
  cursor: pointer;
  transition: opacity 0.15s;
}
#submit-btn:hover { opacity: 0.75; }
#submit-btn:active { opacity: 0.6; }

.entry-status {
  font-size: 13px;
  font-style: italic;
  color: var(--grey-6);
  margin-top: 10px;
  min-height: 18px;
}
.entry-status.error { color: var(--grey-1); font-style: normal; }

/* ── Stats grids ── */
.stats-grid {
  display: grid;
  gap: 0;
}
.stats-grid--4 { grid-template-columns: repeat(4, 1fr); }
.stats-grid--3 { grid-template-columns: repeat(3, 1fr); }
@media (max-width: 560px) {
  .stats-grid--4 { grid-template-columns: repeat(2, 1fr); }
  .stats-grid--3 { grid-template-columns: repeat(3, 1fr); }
}

.stat {
  padding: 14px 16px 14px 0;
  border-bottom: 1px solid var(--grey-c);
}
.stat-label {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--grey-6);
  margin-bottom: 4px;
}
.stat-value {
  font-size: 32px;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  line-height: 1;
  letter-spacing: -0.5px;
}
.stat-sub {
  font-size: 11px;
  color: var(--grey-9);
  font-style: italic;
  margin-top: 3px;
}

/* ── Thresholds ── */
.thresholds-editor {
  background: var(--grey-f);
  border: 1px solid var(--grey-c);
  padding: 14px 16px;
  margin-bottom: 14px;
}
.editor-hint { font-size: 12px; color: var(--grey-6); font-style: italic; margin-bottom: 10px; }
.threshold-inputs { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }
.threshold-input {
  width: 70px;
  font-family: var(--font);
  font-size: 16px;
  border: none;
  border-bottom: 1px solid var(--black);
  padding: 4px 0;
  text-align: center;
  background: transparent;
  outline: none;
}

.text-btn {
  background: none;
  border: none;
  font-family: var(--font);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--grey-6);
  cursor: pointer;
  text-decoration: underline;
  padding: 0;
}
.text-btn:hover { color: var(--black); }

/* ── Charts ── */
.chart-wrap { position: relative; height: 220px; width: 100%; }
.chart-wrap--short { height: 170px; }
.chart-legend { font-size: 12px; color: var(--grey-6); font-style: italic; margin-bottom: 10px; }
.legend-solid { color: var(--black); }
.legend-dashed { color: var(--grey-9); }

/* ── Tables ── */
.table-scroll { overflow-x: auto; }
.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}
.data-table th {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--grey-6);
  text-align: left;
  padding: 0 12px 8px 0;
  border-bottom: 2px solid var(--black);
  white-space: nowrap;
}
.data-table td {
  padding: 9px 12px 9px 0;
  border-bottom: 1px solid var(--grey-e);
  vertical-align: middle;
}
.data-table tr:last-child td { border-bottom: none; }
.data-table--compact td,
.data-table--compact th { padding: 7px 10px 7px 0; font-size: 12px; }

.td-time {
  font-weight: 700;
  font-variant-numeric: tabular-nums;
}
.td-best { font-weight: 700; }
.td-muted { color: var(--grey-9); font-style: italic; }
.td-highlight { background: var(--grey-f); }

.delete-btn {
  background: none;
  border: none;
  color: var(--grey-c);
  cursor: pointer;
  font-size: 15px;
  padding: 2px 4px;
  line-height: 1;
  font-family: var(--font);
  transition: color 0.12s;
}
.delete-btn:hover { color: var(--black); }

.avg-toggle {
  background: none;
  border: 1px solid var(--grey-c);
  border-radius: 3px;
  font-family: var(--font);
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--grey-6);
  cursor: pointer;
  padding: 2px 6px;
}
.avg-toggle:hover { color: var(--black); border-color: var(--grey-9); }

.log-show-more { margin-top: 10px; display: block; }

.edit-toggle-row {
  margin-top: 10px;
  font-size: 13px;
}

.edit-time-input {
  font-family: var(--font);
  font-size: 13px;
  font-weight: 700;
  width: 56px;
  border: none;
  border-bottom: 1px solid var(--grey-c);
  padding: 2px 4px;
  outline: none;
  background: transparent;
  font-variant-numeric: tabular-nums;
}
.edit-time-input:focus { border-bottom-color: var(--black); }

.edit-save-btn {
  background: none;
  border: 1px solid var(--grey-c);
  font-family: var(--font);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--grey-6);
  cursor: pointer;
  padding: 2px 8px;
  transition: color 0.12s, border-color 0.12s;
}
.edit-save-btn:hover { color: var(--black); border-color: var(--black); }
.edit-save-btn:disabled { opacity: 0.4; cursor: default; }

.edit-status {
  font-size: 12px;
  color: var(--grey-9);
  font-style: italic;
  width: 30px;
}

.table-empty {
  font-size: 13px;
  color: var(--grey-9);
  font-style: italic;
  padding: 16px 0 4px;
}

/* ── Footer ── */
.footer { padding: 20px 0 0; text-align: center; }
.footer p { font-size: 11px; color: var(--grey-9); font-style: italic; padding-top: 10px; }

/* ── Utility ── */
.hidden { display: none !important; }