/* Sprint 017: mobile sticky context, category drawer, configurable categories, and simplified navigation. */

:root {
  --site-header-height: 104px;
  --month-masthead-height: 78px;
  --calendar-sticky-top: var(--site-header-height);
  --calendar-day-sticky-top: calc(var(--site-header-height) + var(--month-masthead-height));
}

html,
body {
  overflow-x: clip;
}

.site-header {
  position: sticky;
  top: env(safe-area-inset-top, 0px);
  z-index: 90;
}

.calendar-month .calendar-hero {
  position: sticky;
  top: var(--calendar-sticky-top);
  z-index: 55;
}

.day-band {
  position: relative;
}

.day-band-header {
  align-self: stretch;
}

.category-edge-tab {
  position: fixed;
  left: 0;
  top: max(calc(var(--calendar-day-sticky-top) + 24px), 190px);
  z-index: 64;
  appearance: none;
  border: 1px solid var(--ink);
  border-left: 0;
  padding: 13px 8px;
  background: var(--paper);
  color: var(--ink);
  font: 800 .72rem/1 var(--sans);
  letter-spacing: .06em;
  text-transform: uppercase;
  writing-mode: vertical-rl;
  transform: rotate(180deg);
  cursor: pointer;
}

.category-filter-drawer {
  position: fixed;
  inset: max(env(safe-area-inset-top, 0px), 0px) auto 0 0;
  z-index: 100;
  width: min(390px, 92vw);
  padding: 26px 24px 30px;
  overflow-y: auto;
  background: var(--paper);
  border-right: 2px solid var(--ink);
  box-shadow: 16px 0 38px rgba(17, 19, 24, .18);
}

.category-filter-drawer[hidden] {
  display: none !important;
}

.category-filter-heading {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 20px;
  border-bottom: 2px solid var(--ink);
  padding-bottom: 14px;
}

.category-filter-heading h2 {
  margin: 3px 0 0;
}

.category-filter-help {
  margin: 16px 0;
  color: var(--muted);
}

.category-filter-list {
  border: 0;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 4px;
}

.category-filter-check {
  display: grid;
  grid-template-columns: 22px 15px minmax(0, 1fr);
  align-items: center;
  gap: 10px;
  min-height: 42px;
  padding: 5px 0;
  cursor: pointer;
  font-weight: 750;
}

.category-filter-check input {
  width: 18px;
  height: 18px;
  accent-color: var(--ink);
}

.category-filter-check .category-swatch {
  width: 14px;
  height: 14px;
  border: 1px solid rgba(17, 19, 24, .5);
}

.category-filter-clear {
  margin-top: 18px;
}

.calendar-filter-status:not(:empty) {
  padding-top: 8px;
  padding-bottom: 8px;
}

.category-choice-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px 18px;
  margin-top: 7px;
}

.category-choice-grid .checkbox-line {
  margin: 0;
}

.category-admin-list {
  display: grid;
  gap: 10px;
  margin: 18px 0 28px;
}

.category-admin-row {
  display: grid;
  grid-template-columns: minmax(160px, 1fr) 120px auto;
  align-items: end;
  gap: 12px;
  padding-bottom: 12px;
  border-bottom: 1px solid rgba(17, 19, 24, .25);
}

.category-admin-row label {
  margin: 0;
}

.category-admin-actions {
  display: flex;
  gap: 8px;
  align-items: center;
}

.event-source-options a::before {
  content: '+ ';
  font-weight: 900;
}

@media (min-width: 721px) {
  .day-band-header {
    position: sticky;
    top: var(--calendar-day-sticky-top);
    z-index: 42;
  }
}

@media (max-width: 720px) {
  :root {
    --site-header-height: 126px;
    --month-masthead-height: 74px;
  }

  .site-header {
    top: 0;
    padding-top: calc(12px + env(safe-area-inset-top, 0px));
  }

  .site-header .wordmark-text {
    max-width: 52vw;
  }

  .site-discovery .site-nav {
    gap: 14px;
    flex-wrap: nowrap;
  }

  .calendar-month .calendar-hero {
    top: var(--calendar-sticky-top);
  }

  .day-band {
    display: grid;
    grid-template-columns: 64px minmax(0, 1fr);
    align-items: stretch;
  }

  .day-band-header {
    position: sticky;
    top: var(--calendar-day-sticky-top);
    z-index: 44;
    align-self: start;
    min-height: 76px;
    max-height: 96px;
    padding: 10px 7px;
    background: inherit;
  }

  .day-band-events {
    min-width: 0;
  }

  .category-edge-tab {
    top: auto;
    bottom: max(102px, calc(82px + env(safe-area-inset-bottom, 0px)));
  }

  .category-filter-drawer {
    width: min(360px, 94vw);
    padding-top: calc(20px + env(safe-area-inset-top, 0px));
    padding-bottom: calc(26px + env(safe-area-inset-bottom, 0px));
  }

  .category-choice-grid {
    grid-template-columns: 1fr;
  }

  .category-admin-row {
    grid-template-columns: 1fr 110px;
  }

  .category-admin-actions {
    grid-column: 1 / -1;
  }
}

@media (max-width: 430px) {
  .site-discovery .site-nav {
    gap: 11px;
    font-size: .88rem;
  }

  .site-search-toggle {
    flex-basis: 34px;
    width: 34px;
    height: 34px;
  }

  .day-band {
    grid-template-columns: 58px minmax(0, 1fr);
  }
}