:root {
  /* Parent colors */
  --color-ina: #e76f51;
  --color-ina-bg: #fde4dc;
  --color-ina-text: #7a2e1a;
  --color-joshua: #2a9d8f;
  --color-joshua-bg: #d6efeb;
  --color-joshua-text: #1b4f48;

  /* Status colors */
  --color-today-ring: #1d4ed8;
  --color-holiday: #c1121f;
  --color-observance: #b5651d;
  --color-school: #6a4c93;
  --color-weekend: #16a34a;
  --color-sfo: #16a34a;

  /* Neutrals */
  --color-bg: #f7f7f5;
  --color-surface: #ffffff;
  --color-border: #e4e4e0;
  --color-text: #1f1f1f;
  --color-text-muted: #6b6b6b;
  --color-weeknum-bg: #f0f0ec;

  /* Spacing */
  --radius: 8px;
  --radius-sm: 4px;
  --gap: 1rem;
  --max-width: 1400px;

  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  color: var(--color-text);
  background: var(--color-bg);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  padding: 0;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

/* ---------- Header ---------- */
.site-header {
  padding: 1.5rem 1rem 1rem;
  text-align: center;
  max-width: var(--max-width);
  margin: 0 auto;
}

.site-header h1 {
  margin: 0 0 0.25rem;
  font-size: clamp(1.6rem, 4vw, 2.2rem);
  letter-spacing: -0.01em;
}

.subtitle {
  margin: 0 0 1rem;
  color: var(--color-text-muted);
  font-size: 0.95rem;
}

/* ---------- Year navigation ---------- */
.year-nav {
  display: inline-flex;
  gap: 0.25rem;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 999px;
  padding: 0.25rem;
}

.year-nav button {
  border: 0;
  background: transparent;
  padding: 0.5rem 1.1rem;
  font: inherit;
  font-weight: 600;
  color: var(--color-text);
  cursor: pointer;
  border-radius: 999px;
  transition: background 0.15s, color 0.15s;
}

.year-nav button:hover {
  background: var(--color-weeknum-bg);
}

.year-nav button:focus-visible {
  outline: 2px solid var(--color-today-ring);
  outline-offset: 2px;
}

.year-nav button[aria-pressed="true"] {
  background: var(--color-text);
  color: var(--color-bg);
}

/* ---------- Legend ---------- */
.legend {
  max-width: var(--max-width);
  margin: 0 auto 1rem;
  padding: 0 1rem;
}

.legend__title {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.legend__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.25rem;
  justify-content: center;
  font-size: 0.9rem;
}

.legend__item {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  cursor: pointer;
  user-select: none;
  transition: opacity 0.15s;
}

.legend__item--inactive {
  opacity: 0.35;
}

.legend__swatch {
  display: inline-block;
  width: 1.1rem;
  height: 1.1rem;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(0, 0, 0, 0.1);
}

.legend__swatch--ina { background: var(--color-ina-bg); border-color: var(--color-ina); }
.legend__swatch--joshua { background: var(--color-joshua-bg); border-color: var(--color-joshua); }
.legend__swatch--today {
  background: var(--color-surface);
  outline: 2px solid var(--color-today-ring);
  outline-offset: -2px;
}
.legend__swatch--holiday {
  background: var(--color-surface);
  border: 2px solid var(--color-holiday);
  color: var(--color-holiday);
  position: relative;
}
.legend__swatch--holiday::after {
  content: "15";
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.7rem;
  font-weight: 700;
  color: var(--color-holiday);
}
.legend__swatch--observance {
  background: var(--color-surface);
  border: 2px solid var(--color-holiday);
  position: relative;
}
.legend__swatch--observance::after {
  content: "15";
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.7rem;
  font-weight: 700;
  color: var(--color-observance);
}
.legend__swatch--school {
  background:
    repeating-linear-gradient(
      -45deg,
      rgba(106, 76, 147, 0.25),
      rgba(106, 76, 147, 0.25) 3px,
      transparent 3px,
      transparent 6px
    ),
    var(--color-surface);
  border-color: var(--color-school);
}
.legend__swatch--weekend {
  background: var(--color-surface);
  border: 2px solid var(--color-weekend);
}
.legend__swatch--sfo {
  background:
    repeating-linear-gradient(
      -45deg,
      rgba(106, 76, 147, 0.25),
      rgba(106, 76, 147, 0.25) 3px,
      transparent 3px,
      transparent 6px
    ),
    var(--color-surface);
  border-color: var(--color-school);
  position: relative;
}
.legend__swatch--sfo::before {
  content: "";
  position: absolute;
  top: 2px;
  right: 2px;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--color-sfo);
}

/* ---------- Stats ---------- */
.stats {
  display: flex;
  gap: 1rem;
  justify-content: center;
  max-width: var(--max-width);
  margin: 0 auto 1.25rem;
  padding: 0 1rem;
}

.stats__card {
  display: flex;
  flex-direction: column;
  align-items: center;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 0.75rem 1.25rem;
  min-width: 10rem;
}

.stats__card--ina {
  border-left: 4px solid var(--color-ina);
}

.stats__card--joshua {
  border-left: 4px solid var(--color-joshua);
}

.stats__name {
  margin: 0 0 0.35rem;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.stats__row {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.stats__item {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.stats__divider {
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-text-muted);
  padding-bottom: 1rem;
}

.stats__number {
  font-size: 1.8rem;
  font-weight: 700;
  line-height: 1.2;
}

.stats__number--sfo {
  color: var(--color-sfo);
}

.stats__number--total {
  color: var(--color-text-muted);
}

.stats__card--ina .stats__number:not(.stats__number--sfo):not(.stats__number--total) {
  color: var(--color-ina);
}

.stats__card--joshua .stats__number:not(.stats__number--sfo):not(.stats__number--total) {
  color: var(--color-joshua);
}

.stats__label {
  font-size: 0.8rem;
  color: var(--color-text-muted);
}

/* ---------- Year grid ---------- */
.year-grid {
  display: grid;
  gap: var(--gap);
  padding: 0 1rem 2rem;
  max-width: var(--max-width);
  margin: 0 auto;
  grid-template-columns: 1fr;
}

@media (min-width: 540px) {
  .year-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (min-width: 768px) {
  .year-grid { grid-template-columns: repeat(3, 1fr); }
}

@media (min-width: 1100px) {
  .year-grid { grid-template-columns: repeat(4, 1fr); }
}

/* ---------- Month ---------- */
.month {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 0.75rem;
  break-inside: avoid;
}

.month__title {
  margin: 0 0 0.5rem;
  font-size: 1.05rem;
  font-weight: 700;
  text-align: center;
  letter-spacing: 0.01em;
}

.month__grid {
  display: grid;
  grid-template-columns: 1.4rem repeat(7, 1fr);
  gap: 2px;
}

.month__head {
  display: grid;
  grid-template-columns: 1.4rem repeat(7, 1fr);
  gap: 2px;
  margin-bottom: 2px;
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--color-text-muted);
  text-align: center;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.month__head-cell {
  padding: 0.2rem 0;
}

.month__weeknum-label {
  /* Empty corner above week number column */
}

.cell {
  position: relative;
  aspect-ratio: 1 / 1;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.82rem;
  font-weight: 500;
  border-radius: var(--radius-sm);
  min-height: 1.8rem;
}

.cell--weeknum {
  background: var(--color-weeknum-bg);
  color: var(--color-text-muted);
  font-size: 0.7rem;
  font-weight: 600;
  aspect-ratio: auto;
  min-height: 0;
}

.cell--empty {
  background: transparent;
}

.cell--ina {
  background: var(--color-ina-bg);
  color: var(--color-ina-text);
}

.cell--joshua {
  background: var(--color-joshua-bg);
  color: var(--color-joshua-text);
}

.cell--holiday {
  color: var(--color-holiday);
  font-weight: 700;
  box-shadow: inset 0 0 0 2px var(--color-holiday);
}

.cell--observance {
  color: var(--color-observance);
  font-weight: 700;
  box-shadow: inset 0 0 0 2px var(--color-holiday);
}

.cell--weekend {
  box-shadow: inset 0 0 0 2px var(--color-weekend);
}

/* Weekend + holiday/observance: holiday border wins */
.cell--weekend.cell--holiday {
  box-shadow: inset 0 0 0 2px var(--color-holiday);
}
.cell--weekend.cell--observance {
  box-shadow: inset 0 0 0 2px var(--color-holiday);
}

/* School holiday: diagonal stripe overlay */
.cell--school::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: repeating-linear-gradient(
    -45deg,
    rgba(106, 76, 147, 0.32),
    rgba(106, 76, 147, 0.32) 3px,
    transparent 3px,
    transparent 7px
  );
  pointer-events: none;
}

/* Today ring (drawn above backgrounds, uses outline so it stacks with holiday box-shadow) */
.cell--today {
  outline: 2px solid var(--color-today-ring);
  outline-offset: -2px;
  font-weight: 700;
}

/* SFO open during school holiday: green dot indicator */
.cell--sfo-open::before {
  content: "";
  position: absolute;
  top: 2px;
  right: 2px;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--color-sfo);
  z-index: 1;
}

/* ---------- Legend toggle hide states ---------- */
.year-grid.hide-ina .cell--ina { background: var(--color-surface); color: var(--color-text); }
.year-grid.hide-joshua .cell--joshua { background: var(--color-surface); color: var(--color-text); }
.year-grid.hide-today .cell--today { outline: none; }
.year-grid.hide-holiday .cell--holiday { box-shadow: none; color: inherit; font-weight: 500; }
.year-grid.hide-observance .cell--observance { box-shadow: none; color: inherit; font-weight: 500; }
.year-grid.hide-school .cell--school::after { display: none; }
.year-grid.hide-sfo .cell--sfo-open::before { display: none; }
.year-grid.hide-weekend .cell--weekend { box-shadow: none; }

/* ---------- Footer ---------- */
.site-footer {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 1rem 1.5rem 2rem;
  color: var(--color-text-muted);
  font-size: 0.88rem;
  text-align: center;
  border-top: 1px solid var(--color-border);
}

.site-footer p {
  max-width: 44rem;
  margin: 1rem auto 0;
}

/* ---------- Print ---------- */
@media print {
  :root {
    --color-bg: #fff;
    --color-surface: #fff;
  }

  body {
    background: #fff;
  }

  .year-nav,
  .site-footer,
  .stats {
    display: none !important;
  }

  .site-header {
    padding: 0.5rem 0;
  }

  .year-grid {
    grid-template-columns: repeat(3, 1fr) !important;
    gap: 0.5rem;
    padding: 0;
  }

  .month {
    border: 1px solid #000;
    padding: 0.35rem;
    page-break-inside: avoid;
    break-inside: avoid;
  }

  .cell {
    font-size: 0.68rem;
    border: 1px solid #ccc;
  }

  /* Use patterns not color for print */
  .cell--ina {
    background: #fff !important;
    color: #000 !important;
    border: 1px solid #000;
  }

  .cell--joshua {
    background: repeating-linear-gradient(
      45deg,
      #000 0,
      #000 1px,
      #fff 1px,
      #fff 4px
    ) !important;
    color: #000 !important;
    border: 1px solid #000;
  }

  .cell--joshua::before {
    content: "";
    position: absolute;
    inset: 2px;
    background: #fff;
    z-index: 0;
    border-radius: 2px;
  }

  .cell--joshua > * {
    position: relative;
    z-index: 1;
  }

  .cell--today {
    outline: 2px solid #000;
    outline-offset: -2px;
  }

  .cell--holiday,
  .cell--observance {
    text-decoration: underline;
    color: #000 !important;
  }

  .cell--school::after {
    background: repeating-linear-gradient(
      -45deg,
      rgba(0, 0, 0, 0.45),
      rgba(0, 0, 0, 0.45) 2px,
      transparent 2px,
      transparent 5px
    );
  }
}