/* ================================================================
   SyncSpace — UI polish layer (loaded after style.css on index.html)

   Presentation only: no element ids, classes or texts that app.js or
   the tests rely on are changed. Most rules are scoped under #timeline
   so they win over style.css without !important.

   motion.js adds a few data attributes to timeline rows
   (data-state, data-hour-start, data-now) and builds the day overview
   strip; everything here still works without them, just plainer.
   ================================================================ */

/* ── Type: real headings instead of tiny all-caps labels ───── */

header h1,
.panel h2,
.booking-slot-label {
  font-family: var(--font-display);
}

header h1 {
  font-size: 1.1875rem;
  font-weight: 700;
}

.panel h2 {
  margin: 0 0 var(--sp-1);
  font-size: 1.25rem;
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: -0.02em;
  text-transform: none;
  color: var(--text);
}

.panel h2 .timeline-tz {
  font-family: 'Inter', system-ui, sans-serif;
  font-size: var(--fs-sm);
  font-weight: 500;
  color: var(--muted);
}

#timeline-panel #resource-hours-hint {
  margin: 0 0 var(--sp-6);
  color: var(--muted);
}

/* ── Header: frosted, so the timeline scrolls underneath it ─── */

header {
  background: color-mix(in srgb, var(--panel-bg) 84%, transparent);
  -webkit-backdrop-filter: saturate(1.4) blur(14px);
  backdrop-filter: saturate(1.4) blur(14px);
}

/* ── Day overview strip (built by motion.js) ───────────────── */

.tl-overview {
  margin: 0 0 var(--sp-6);
}

.tl-overview[hidden] {
  display: none;
}

.tl-bar {
  position: relative;
  display: flex;
  gap: 3px;
  height: 14px;
}

.tl-seg {
  flex: 1 1 0;
  min-width: 0;
  border-radius: 3px;
  background: var(--free-border);
  cursor: pointer;
  transform-origin: 50% 100%;
  transition: transform 0.18s var(--ease-out), filter 0.18s;
}

.tl-seg:hover {
  transform: scaleY(1.5);
  filter: brightness(1.08);
}

.tl-seg[data-state="mine"]     { background: var(--accent); }
.tl-seg[data-state="pending"]  { background: var(--warn-dot); }
.tl-seg[data-state="booked"]   { background: var(--border-strong); }
.tl-seg[data-state="past"]     { background: var(--border); }
.tl-seg[data-state="blackout"] {
  background: repeating-linear-gradient(135deg, var(--border-strong) 0 3px, transparent 3px 6px);
  box-shadow: inset 0 0 0 1px var(--border-strong);
}

.tl-now {
  position: absolute;
  top: -5px;
  bottom: -5px;
  width: 2px;
  margin-left: -1px;
  border-radius: 2px;
  background: var(--danger);
  pointer-events: none;
}

.tl-axis {
  display: flex;
  justify-content: space-between;
  margin-top: var(--sp-2);
  font-size: var(--fs-xs);
  font-variant-numeric: tabular-nums;
  color: var(--muted);
}

.tl-legend {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-2) var(--sp-6);
  margin: var(--sp-4) 0 0;
  padding: 0;
  list-style: none;
  font-size: var(--fs-sm);
  color: var(--muted);
}

.tl-legend li {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
}

.tl-legend b {
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  color: var(--text);
}

.tl-legend i {
  width: 10px;
  height: 10px;
  border-radius: 3px;
  background: var(--free-border);
}

.tl-legend i[data-state="mine"]     { background: var(--accent); }
.tl-legend i[data-state="pending"]  { background: var(--warn-dot); }
.tl-legend i[data-state="booked"]   { background: var(--border-strong); }
.tl-legend i[data-state="blackout"] {
  background: repeating-linear-gradient(135deg, var(--border-strong) 0 2px, transparent 2px 4px);
  box-shadow: inset 0 0 0 1px var(--border-strong);
}

/* ── Timeline rows ─────────────────────────────────────────── */

#timeline {
  gap: 6px;
}

#timeline .slot {
  --bar: var(--border-strong);
  position: relative;
  min-height: 3rem;
  padding: var(--sp-2) var(--sp-4) var(--sp-2) 1.375rem;
  gap: var(--sp-4);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: var(--panel-bg);
  color: var(--muted);
  transition: background-color 0.2s, border-color 0.2s, box-shadow 0.2s, transform 0.2s var(--ease-out);
}

/* state bar on the left edge */
#timeline .slot::before {
  content: "";
  position: absolute;
  left: 7px;
  top: 9px;
  bottom: 9px;
  width: 4px;
  border-radius: var(--radius-full);
  background: var(--bar);
  transition: background-color 0.2s, transform 0.2s var(--ease-out);
}

/* One line per hour on wide screens: :00 on the left, :30 on the right.
   (Member view only; admin rows carry approve/reject controls and keep
   the full width.) motion.js marks half-past rows with data-half. */
@media (min-width: 900px) {
  #timeline:not(:has(.admin-slot)) {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 6px 10px;
  }
  #timeline:not(:has(.admin-slot)) > .slot {
    grid-column: 1;
  }
  #timeline:not(:has(.admin-slot)) > .slot[data-half] {
    grid-column: 2;
  }
}

/* Single column (admin view, small screens): a new hour starts a group */
@media (max-width: 899px) {
  #timeline .slot[data-hour-start] {
    margin-top: var(--sp-3);
  }
}
#timeline:has(.admin-slot) .slot[data-hour-start] {
  margin-top: var(--sp-3);
}

/* time label: tabular so every row lines up */
#timeline .slot > span:first-child,
#timeline .slot-time {
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.01em;
}

#timeline .capacity-label {
  font-weight: 500;
  color: var(--muted);
}

/* Free (member) */
#timeline .slot.free {
  --bar: var(--free-border);
  background: var(--panel-bg);
  border-color: var(--border);
}

#timeline .slot.free > span:first-child {
  color: var(--text);
  font-weight: 600;
}

#timeline .slot.free:not(.past):not(.my-booked) {
  cursor: pointer;
}

#timeline .slot.free:not(.past):not(.my-booked):hover {
  background: var(--free);
  border-color: color-mix(in srgb, var(--free-border) 55%, var(--border));
  box-shadow: 0 6px 18px -8px rgba(34, 197, 94, 0.45);
  transform: translateX(3px);
}

#timeline .slot.free:not(.past):not(.my-booked):hover::before {
  transform: scaleY(1.15);
}

#timeline .slot.free button {
  height: 2rem;
  min-width: 4.75rem;
  padding: 0 var(--sp-4);
  border-radius: var(--radius-full);
  border: 1px solid var(--border-strong);
  background: var(--panel-bg);
  color: var(--text);
  font-size: var(--fs-sm);
  font-weight: 600;
  box-shadow: none;
  transition: background-color 0.18s, color 0.18s, border-color 0.18s, transform 0.12s;
}

#timeline .slot.free:not(.past):not(.my-booked):hover button,
#timeline .slot.free button:focus-visible {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--accent-contrast);
}

#timeline .slot.free:not(.past):not(.my-booked) button:active {
  transform: scale(0.95);
}

/* Mine */
#timeline .slot.free.my-booked {
  --bar: var(--accent);
  background: var(--accent-soft);
  border-color: color-mix(in srgb, var(--accent) 30%, var(--border));
}

#timeline .slot.free.my-booked > span:first-child {
  color: var(--accent);
}

#timeline .slot.free.my-booked button,
#timeline .slot.free.my-booked button:disabled {
  opacity: 1;
  background: var(--accent);
  border-color: var(--accent);
  color: var(--accent-contrast);
}

#timeline .slot.free.my-booked button::before {
  content: "";
  width: 12px;
  height: 12px;
  background: currentColor;
  -webkit-mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='black' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M5 12.5l4.5 4.5L19 7.5'/%3E%3C/svg%3E") center / contain no-repeat;
  mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='black' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M5 12.5l4.5 4.5L19 7.5'/%3E%3C/svg%3E") center / contain no-repeat;
}

/* A booking of yours that covers the whole room ("You (pending)") */
#timeline .slot.booked[data-state="mine"] {
  --bar: var(--accent);
  background: var(--accent-soft);
  border-color: color-mix(in srgb, var(--accent) 30%, var(--border));
  color: var(--accent);
}

#timeline .slot.booked[data-state="mine"] > span:first-child {
  font-weight: 600;
}

#timeline .slot.booked[data-state="mine"] .booked-label {
  color: var(--accent);
  font-weight: 600;
}

/* Taken by someone else */
#timeline .slot.booked {
  --bar: var(--border-strong);
  background: var(--panel-bg-subtle);
}

#timeline .slot.booked .booked-label {
  color: var(--muted);
}

/* Maintenance blackout: hatched, so it reads differently from "taken" */
#timeline .slot[data-state="blackout"] {
  --bar: var(--muted-2);
  background:
    repeating-linear-gradient(135deg, transparent 0 9px, color-mix(in srgb, var(--border-strong) 45%, transparent) 9px 10px),
    var(--panel-bg-subtle);
}

/* Past */
#timeline .slot.free.past,
#timeline .slot.slot-past {
  --bar: var(--border);
  opacity: 0.55;
  background: transparent;
  box-shadow: none;
  transform: none;
}

#timeline .slot.free.past button {
  border-color: var(--border);
  background: transparent;
}

/* Admin rows */
#timeline .slot.slot-all-free      { --bar: var(--free-border); background: var(--panel-bg); }
#timeline .slot.slot-all-free .slot-time { color: var(--text); }
#timeline .slot.slot-pending-approval { --bar: var(--warn-dot); background: var(--warn-bg); border-color: var(--warn-border); }
#timeline .slot.slot-confirmed-booked { --bar: var(--accent); background: var(--accent-soft); }

#timeline .slot-badge.badge-free {
  background: var(--free);
  color: var(--free-text);
  box-shadow: inset 0 0 0 1px color-mix(in srgb, var(--free-border) 45%, transparent);
}

/* "Now" line across the current slot */
#timeline .slot[data-now]::after {
  content: "";
  position: absolute;
  left: -4px;
  right: -4px;
  top: var(--now-pct, 0%);
  height: 2px;
  border-radius: 2px;
  background: var(--danger);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--danger) 18%, transparent);
  pointer-events: none;
  z-index: 1;
}

/* ── Booking drawer ────────────────────────────────────────── */

.booking-drawer {
  transition: transform 0.45s var(--ease-out), visibility 0.45s;
}

.booking-drawer-eyebrow {
  text-transform: none;
  letter-spacing: 0;
  font-size: var(--fs-sm);
  font-weight: 500;
  color: var(--muted);
}

.booking-slot-label {
  font-size: 1.5rem;
}

.booking-drawer .message.success,
.booking-drawer .message.error {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  padding: var(--sp-3) var(--sp-4);
  border-radius: var(--radius-md);
  font-weight: 500;
}

.booking-drawer .message.success::before {
  content: "";
  flex: none;
  width: 1.25rem;
  height: 1.25rem;
  border-radius: 50%;
  background: var(--success-text) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='white' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M6 12.5l4 4L18 8.5'/%3E%3C/svg%3E") center / 70% no-repeat;
}

/* ── Motion ────────────────────────────────────────────────── */

@media (prefers-reduced-motion: no-preference) {
  /* Timeline: rows cascade in when you pick a resource or a date
     (not on every live refresh — motion.js decides). */
  #timeline.tl-enter .slot {
    animation: tl-row-in 0.5s var(--ease-out) both;
    animation-delay: calc(var(--i, 0) * 22ms);
  }

  .tl-overview.tl-enter .tl-seg {
    animation: tl-seg-in 0.45s var(--ease-out) both;
    animation-delay: calc(var(--i, 0) * 14ms);
  }

  /* A row whose state changed while you watched (someone booked it,
     an admin approved it, a live update arrived) */
  #timeline .slot.tl-changed {
    animation: tl-changed 1.4s var(--ease-out);
  }

  /* Your own booking landing in the timeline */
  #timeline .slot.tl-stamp {
    animation: tl-stamp 0.9s var(--ease-spring);
  }

  #timeline .slot.tl-stamp::before {
    animation: tl-bar-grow 0.6s var(--ease-out);
  }

  /* Jumped to from the overview strip */
  #timeline .slot.tl-focus {
    animation: tl-focus 1.2s var(--ease-out);
  }

  /* Drawer contents settle in just after the sheet */
  .booking-drawer:not([hidden]) .booking-drawer-inner > * {
    animation: tl-row-in 0.45s var(--ease-out) both;
  }
  .booking-drawer:not([hidden]) .booking-drawer-inner > :nth-child(2) { animation-delay: 0.05s; }
  .booking-drawer:not([hidden]) .booking-drawer-inner > :nth-child(3) { animation-delay: 0.10s; }
  .booking-drawer:not([hidden]) .booking-drawer-inner > :nth-child(4) { animation-delay: 0.15s; }

  .booking-drawer .message.success {
    animation: tl-pop 0.5s var(--ease-spring);
  }

  .booking-drawer .message.error {
    animation: tl-nudge 0.4s var(--ease-out);
  }

  /* Tabs */
  .tab-pane.is-active {
    animation: tl-fade-up 0.32s var(--ease-out);
  }

  /* Day timeline <-> Resource board */
  #timeline-panel:not([hidden]),
  #board-panel:not([hidden]) {
    animation: tl-fade-up 0.35s var(--ease-out);
  }
}

@keyframes tl-row-in {
  from { opacity: 0; transform: translateY(10px); }
  to   { opacity: 1; transform: none; }
}

@keyframes tl-seg-in {
  from { opacity: 0; transform: scaleY(0); }
  to   { opacity: 1; transform: none; }
}

@keyframes tl-fade-up {
  from { opacity: 0; transform: translateY(6px); }
  to   { opacity: 1; transform: none; }
}

@keyframes tl-changed {
  0%   { box-shadow: 0 0 0 0 color-mix(in srgb, var(--warn-dot) 70%, transparent); background-color: var(--warn-bg); }
  60%  { box-shadow: 0 0 0 8px transparent; }
  100% { box-shadow: 0 0 0 0 transparent; }
}

@keyframes tl-stamp {
  0%   { transform: scale(0.97); box-shadow: 0 0 0 0 color-mix(in srgb, var(--accent) 55%, transparent); }
  45%  { transform: scale(1.012); }
  100% { transform: none; box-shadow: 0 0 0 14px transparent; }
}

@keyframes tl-bar-grow {
  from { transform: scaleY(0); }
  to   { transform: none; }
}

@keyframes tl-focus {
  0%, 40% { box-shadow: 0 0 0 3px var(--accent); }
  100%    { box-shadow: 0 0 0 3px transparent; }
}

@keyframes tl-pop {
  0%   { opacity: 0; transform: scale(0.94); }
  100% { opacity: 1; transform: none; }
}

@keyframes tl-nudge {
  0%, 100% { transform: none; }
  25% { transform: translateX(-6px); }
  50% { transform: translateX(5px); }
  75% { transform: translateX(-2px); }
}

@media (prefers-reduced-motion: reduce) {
  #timeline .slot,
  .booking-drawer {
    transition: none;
  }
}

/* ── Small screens ─────────────────────────────────────────── */

@media (max-width: 720px) {
  /* style.css gives inputs flex: 1 here, which collapses them inside the
     column-direction labels (and lets long resource names overflow). */
  .controls-row label > select,
  .controls-row label > input {
    flex: none;
    width: 100%;
    min-width: 0;
  }

  .app-toolbar .view-switch {
    align-self: flex-start;
  }

  .panel h2 {
    font-size: 1.125rem;
  }

  .tl-legend {
    gap: var(--sp-2) var(--sp-4);
  }

  #timeline .slot.free:not(.past):not(.my-booked):hover {
    transform: none;
  }

  .booking-slot-label {
    font-size: 1.25rem;
  }
}