/* CumuloReserve — resident booking screen. Plain & utilitarian per DesignKit-v1.md */

:root {
  --color-bg: #FFFFFF;
  --color-surface-alt: #F6F7F8;
  --color-border: #DADCE0;
  --color-text-primary: #16181D;
  --color-text-secondary: #5F6368;
  --color-text-disabled: #9AA0A6;

  --color-open-bg: #15803D;
  --color-open-bg-pressed: #116830;
  --color-booked-bg: #E9EAEC;
  --color-booked-bg-pressed: #DCDDE0;
  --color-primary: #2563EB;
  --color-primary-pressed: #1D4ED8;
  --color-danger: #DC2626;
  --color-danger-pressed: #B91C1C;
  --color-error-text: #B91C1C;
  --color-focus-ring: #2563EB;

  /* Admin-block palette — DesignKit-v2 §8. Amber reads "caution/unavailable" without colliding
     with danger-red's destructive-action meaning; dark-grey reads as a distinct third state from
     the normal open-green/booked-grey pair. */
  --color-blocked-bg: #F59E0B;   /* month-view blocked-day cell bg — 8.27:1 vs --color-text-primary, AA pass */
  --color-block-bg: #3F3F46;     /* day-view block slot-row bg — 10.44:1 vs white text, AA pass */

  --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-size-xs: 12px;
  --font-size-sm: 14px;
  --font-size-base: 16px;
  --font-size-md: 18px;
  --font-size-lg: 20px;
  --font-size-xl: 24px;
  --font-weight-regular: 400;
  --font-weight-medium: 500;
  --font-weight-bold: 700;
  --line-height-base: 1.4;

  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 24px;
  --space-6: 32px;

  --radius-sm: 6px;
  --radius-md: 10px;
  --shadow-modal: 0 4px 16px rgba(0,0,0,0.16);
  --opacity-past: 0.45;

  --duration-fast: 120ms;
  --duration-base: 180ms;
  --easing: ease-out;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--color-bg);
  color: var(--color-text-primary);
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  line-height: var(--line-height-base);
}

.app-shell {
  max-width: 480px;
  margin: 0 auto;
  padding: var(--space-4);
}
@media (min-width: 640px) {
  .app-shell { max-width: 560px; }
}

.header-banner {
  display: block;
  width: 100%;
  height: 96px;
  object-fit: cover;
  object-position: center 35%;
  border-radius: var(--radius-md);
  margin-bottom: var(--space-4);
}

.app-header {
  margin-bottom: var(--space-4);
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--space-3);
}
.app-title { font-size: var(--font-size-xl); font-weight: var(--font-weight-bold); margin: 0; }

/* Admin control — deliberately understated (text-link scale, muted color) so it reads as
   infrastructure, not a feature residents are meant to notice or tap. */
.admin-control { flex-shrink: 0; }
.admin-link {
  background: none;
  border: none;
  padding: var(--space-1) 0;
  font-size: var(--font-size-xs);
  color: var(--color-text-secondary);
  text-decoration: underline;
  cursor: pointer;
}
.admin-link:focus-visible { outline: 2px solid var(--color-focus-ring); outline-offset: 2px; }
.admin-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--font-size-xs);
  color: var(--color-text-secondary);
  background: var(--color-surface-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: var(--space-1) var(--space-2);
}
.admin-badge[hidden] { display: none; }
.admin-logout {
  background: none;
  border: none;
  padding: 0;
  font-size: var(--font-size-xs);
  color: var(--color-primary);
  text-decoration: underline;
  cursor: pointer;
}

/* Month view — a digital analog of Isle Cove's paper wall calendar: a literal 7-column grid,
   current + next month always vertically stacked at every viewport width (page-scroll reveals
   the second month — no side-by-side layout, unlike the old date-only picker this replaced).
   Each day cell shows every booking for that date, so rows are NOT square/fixed-height — a
   busy day's row grows as tall as it needs (CSS Grid's default row-sizing handles this: a
   whole week-row grows to fit its tallest cell, no JS height math needed). */
.calendar-picker { margin-bottom: var(--space-3); }
.calendar-picker__months {
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
}

.calendar-month__title {
  text-align: center;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  margin: 0 0 var(--space-2);
}
.calendar-month__weekdays,
.calendar-month__grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
}
.calendar-month__weekdays {
  font-size: var(--font-size-xs);
  color: var(--color-text-secondary);
  text-align: center;
  margin-bottom: var(--space-1);
}
.calendar-month__grid { gap: 1px; background: var(--color-border); border: 1px solid var(--color-border); }
.calendar-day {
  min-height: 44px;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 1px;
  padding: 2px 3px;
  font: inherit;
  background: var(--color-bg);
  border: none;
  cursor: pointer;
  color: var(--color-text-primary);
  overflow-wrap: break-word;
}
.calendar-day:focus-visible { outline: 2px solid var(--color-focus-ring); outline-offset: -2px; }
.calendar-day--today { box-shadow: inset 0 0 0 2px var(--color-primary); }
.calendar-day--selected { background: var(--color-primary); color: #FFFFFF; }
.calendar-day--selected .calendar-day__entry { color: #FFFFFF; }
.calendar-day--empty { cursor: default; background: var(--color-surface-alt); }

/* Blocked (≥1 admin-block booking that day) — composes with --today/--selected rather than
   replacing them, mirroring how .slot-row--past already composes on top of open/booked below.
   --today's box-shadow ring is a different CSS property than background, so the two combine with
   zero extra rule needed. --selected also sets background, so the compound selector below wins on
   specificity (0,2,0) over the bare .calendar-day--blocked (0,1,0) and layers an amber ring
   in place of an amber fill — selection stays the dominant signal, blocked-ness stays visible. */
.calendar-day--blocked { background: var(--color-blocked-bg); color: var(--color-text-primary); }
.calendar-day--blocked .calendar-day__entry { color: var(--color-text-primary); }
.calendar-day--selected.calendar-day--blocked {
  background: var(--color-primary);
  color: #FFFFFF;
  box-shadow: inset 0 0 0 3px var(--color-blocked-bg);
}
.calendar-day--selected.calendar-day--blocked .calendar-day__entry { color: #FFFFFF; }

.calendar-day__num { font-size: 11px; font-weight: var(--font-weight-medium); }
.calendar-day__entry {
  font-size: 9px;
  line-height: 1.25;
  color: var(--color-text-secondary);
}

/* Month view + day view are now one continuous page (no toggle) — a divider + heading marks
   where the calendar's day-cell click scroll-jumps to. */
#dayView {
  margin-top: var(--space-6);
  padding-top: var(--space-4);
  border-top: 1px solid var(--color-border);
}
.section-heading {
  font-size: var(--font-size-md);
  font-weight: var(--font-weight-bold);
  text-align: center;
  margin: 0 0 var(--space-2);
}

.selected-day-label { font-size: var(--font-size-sm); color: var(--color-text-secondary); margin: 0 0 var(--space-4); text-align: center; }

.fetch-error {
  color: var(--color-error-text);
  font-size: var(--font-size-sm);
  margin-bottom: var(--space-4);
}

.slot-list {
  border-top: 1px solid var(--color-border);
}

.slot-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
  min-height: 48px;
  padding: var(--space-3) var(--space-4);
  border: none;
  border-bottom: 1px solid var(--color-border);
  font: inherit;
  text-align: left;
  cursor: pointer;
}
.slot-row--open { background: var(--color-open-bg); color: #FFFFFF; }
.slot-row--open:active { background: var(--color-open-bg-pressed); }
.slot-row--booked { background: var(--color-booked-bg); color: var(--color-text-secondary); cursor: pointer; }
.slot-row--booked:active { background: var(--color-booked-bg-pressed); }
/* Admin block — dark grey + white text, distinct from normal booked-grey (DesignKit-v2 §8).
   --slot-row__status renders the block's reason (see app.js), not booker_name. */
.slot-row--block { background: var(--color-block-bg); color: #FFFFFF; cursor: pointer; }
/* DesignKit-v2 §0 item 21b: blocked rows are non-interactive for residents (rendered as a <div>,
   not a <button> — see app.js renderGrid) — override the pointer cursor the .slot-row--block rule
   above sets, matching .slot-row--past's "nothing to click here" affordance. */
.slot-row--noninteractive { cursor: default; }
.slot-row--past { opacity: var(--opacity-past); cursor: default; }
.slot-row--merge-next { border-bottom: none; margin-bottom: -1px; }
.slot-row__time { font-size: var(--font-size-md); font-weight: var(--font-weight-medium); }
.slot-row__status { font-size: var(--font-size-sm); }

.slot-row:focus-visible {
  outline: 2px solid var(--color-focus-ring);
  outline-offset: -2px;
}

/* Buttons */
.btn {
  font: inherit;
  font-weight: var(--font-weight-medium);
  min-height: 44px;
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  cursor: pointer;
  transition: background var(--duration-fast) var(--easing);
}
.btn:focus-visible { outline: 2px solid var(--color-focus-ring); outline-offset: 2px; }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }

.btn--primary { background: var(--color-primary); color: #FFFFFF; }
.btn--primary:active { background: var(--color-primary-pressed); }
.btn--secondary { background: transparent; border-color: var(--color-border); color: var(--color-text-primary); }
.btn--danger { background: var(--color-danger); color: #FFFFFF; }
.btn--danger:active { background: var(--color-danger-pressed); }
.btn--icon {
  background: transparent;
  color: var(--color-text-primary);
  font-size: var(--font-size-lg);
  min-width: 44px;
  padding: var(--space-2);
}
.btn--inline { margin-left: var(--space-2); }

/* Modal */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.4);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-4);
  opacity: 0;
  transition: opacity var(--duration-base) var(--easing);
}
.modal-backdrop.is-open { opacity: 1; }
.modal-backdrop[hidden] { display: none; }

.modal {
  max-width: 400px;
  width: 100%;
  background: #FFFFFF;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-modal);
  padding: var(--space-5);
  transform: translateY(8px);
  transition: transform var(--duration-base) var(--easing);
}
.modal-backdrop.is-open .modal { transform: translateY(0); }

.modal__title { font-size: var(--font-size-xl); font-weight: var(--font-weight-bold); margin: 0 0 var(--space-3); }
.modal__subtitle { font-size: var(--font-size-sm); color: var(--color-text-secondary); margin: -var(--space-2) 0 var(--space-4); }
.modal__actions { display: flex; justify-content: flex-end; gap: var(--space-2); margin-top: var(--space-4); }

.toggle-group { display: flex; gap: var(--space-2); margin-bottom: var(--space-4); }
.toggle-pill {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-2) var(--space-3);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: var(--font-size-sm);
  cursor: pointer;
}
.toggle-pill:has(input:checked) { background: var(--color-primary); color: #FFFFFF; border-color: var(--color-primary); }
.toggle-pill:has(input:disabled) { opacity: 0.4; cursor: not-allowed; }

.field-label { display: block; font-size: var(--font-size-sm); font-weight: var(--font-weight-medium); margin-bottom: var(--space-1); }
/* DesignKit-v2 §7.0: block-form hour/minute dropdown pair sits side by side, not stacked. */
.field-row { display: flex; gap: var(--space-2); }
.field-row .field-input { width: auto; flex: 1; }
.field-input {
  display: block;
  width: 100%;
  font-size: var(--font-size-base);
  min-height: 44px;
  padding: var(--space-2) var(--space-3);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  margin-bottom: var(--space-1);
}
.field-input:focus-visible { outline: 2px solid var(--color-focus-ring); outline-offset: 2px; border-color: var(--color-primary); }
.field-input--initials {
  width: 5.5em;
  text-align: center;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  font-weight: var(--font-weight-bold);
}
.field-hint { font-size: var(--font-size-xs); color: var(--color-text-secondary); margin: 0 0 var(--space-4); }

.inline-error { color: var(--color-error-text); font-size: var(--font-size-sm); margin: var(--space-2) 0 0; }

/* Court info / rules — native <details>, zero JS, accessible by default */
.court-info {
  margin-top: var(--space-5);
  border-top: 1px solid var(--color-border);
  padding-top: var(--space-4);
}
.court-info__summary {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-secondary);
  cursor: pointer;
  padding: var(--space-2) 0;
}
.court-info__summary:focus-visible { outline: 2px solid var(--color-focus-ring); outline-offset: 2px; }
.court-info__photo {
  display: block;
  width: 100%;
  height: auto;
  border-radius: var(--radius-md);
  margin: var(--space-3) 0;
}
.court-info__rules {
  margin: 0;
  padding: 0 0 0 var(--space-5);
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  line-height: 1.7;
}

/* Public activity log (DesignKit-v2 §6) — bottom of page, no auth. Plain/utilitarian list,
   matching the copy voice's no-dramatization rule. */
.activity-log {
  margin-top: var(--space-5);
  border-top: 1px solid var(--color-border);
  padding-top: var(--space-4);
}
.activity-log__list {
  list-style: none;
  margin: 0 0 var(--space-3);
  padding: 0;
}
.activity-log__entry {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  padding: var(--space-2) 0;
  border-bottom: 1px solid var(--color-border);
}
.activity-log__entry:last-child { border-bottom: none; }
.activity-log__empty {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  padding: var(--space-2) 0;
}

/* Admin portal (DesignKit-v2 §5.1) — revealed section, visible only to a logged-in admin.
   Reuses existing field-input/btn/fetch-error/inline-error tokens rather than inventing new ones. */
.admin-portal {
  margin-bottom: var(--space-6);
  padding: var(--space-4);
  background: var(--color-surface-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
}
.admin-block {
  margin-top: var(--space-5);
  padding-top: var(--space-4);
  border-top: 1px solid var(--color-border);
}
.admin-block:first-of-type { margin-top: var(--space-3); border-top: none; padding-top: 0; }
.admin-block__title { font-size: var(--font-size-base); font-weight: var(--font-weight-bold); margin: 0 0 var(--space-3); }

.admin-table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--font-size-sm);
  margin-bottom: var(--space-4);
}
.admin-table th, .admin-table td {
  text-align: left;
  padding: var(--space-2);
  border-bottom: 1px solid var(--color-border);
  vertical-align: middle;
}
.admin-table th { color: var(--color-text-secondary); font-weight: var(--font-weight-medium); }

.admin-form { max-width: 360px; }