/* ── Docked Event Panel ──────────────────────────────────────────────
   May-2026 Session 3 partial (action-points-2026-05-08 §4.4, §13.2).

   Notion Calendar pattern: clicking an event opens its full detail in a
   docked right-side sidebar — calendar stays interactive behind it. No
   modal, no page transition. Mirrors the existing AI right-sidebar
   chrome (static/css/shared/ai-companion.css) but on its own z-index
   layer so they can stack independently when both are open.

   Markup contract (the schedule-builder rewrite will populate this):

     <aside id="eventPanel" class="event-panel" aria-hidden="true">
       <header class="event-panel__head">
         <h2 class="event-panel__title">…</h2>
         <button data-event-panel-close>×</button>
       </header>
       <div class="event-panel__body"> … inline-edit fields … </div>
       <footer class="event-panel__foot"> … delete / save / undo … </footer>
     </aside>

   Drives via the [aria-hidden] attribute. JS toggles it; CSS owns the
   slide animation, layering, and inert-on-close behaviour. */

.event-panel {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  width: min(28rem, 92vw);
  background: var(--surface);
  border-left: 1px solid var(--border);
  box-shadow: -8px 0 32px rgba(0, 0, 0, 0.18);
  /* Sits above the page chrome but below modals so a recurrence-edit
     dialog popped from inside the panel can cover it. */
  z-index: calc(var(--z-modal-backdrop, 11000) - 1);
  display: flex;
  flex-direction: column;
  transform: translateX(100%);
  transition: transform 0.22s cubic-bezier(0.32, 0.72, 0.34, 1);
}

.event-panel[aria-hidden="false"] {
  transform: translateX(0);
}

.event-panel[aria-hidden="true"] {
  pointer-events: none;
  /* Stays mounted with `inert`-ish behaviour so inputs can't be tabbed
     into when the panel is closed. */
}

.event-panel__head {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.85rem 1.1rem;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}

.event-panel__title {
  flex: 1;
  margin: 0;
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--text-strong);
  letter-spacing: -0.005em;
}

.event-panel__close {
  background: transparent;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  width: 1.8rem;
  height: 1.8rem;
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.15s ease, color 0.15s ease;
}

.event-panel__close:hover {
  background: var(--surface-2);
  color: var(--text-strong);
}

.event-panel__body {
  flex: 1;
  overflow-y: auto;
  padding: 1rem 1.1rem;
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}

/* Recurrence navigation: ← → arrows that browse occurrences within a
   series — shows up only when the rendered event has series_id != null. */
.event-panel__series-nav {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.35rem 0.55rem;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 0.78rem;
  color: var(--text-muted);
}

.event-panel__series-nav button {
  width: 1.5rem;
  height: 1.5rem;
  border-radius: 4px;
  background: transparent;
  border: none;
  color: var(--text);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
}

.event-panel__series-nav button:hover {
  background: var(--surface-3);
  color: var(--primary);
}

.event-panel__field {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
}

.event-panel__label {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-weight: 600;
  color: var(--text-muted);
}

.event-panel__input,
.event-panel__textarea,
.event-panel__select {
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 0.5rem 0.65rem;
  color: var(--text-strong);
  font-size: 0.88rem;
  font-family: inherit;
  width: 100%;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.event-panel__input:focus,
.event-panel__textarea:focus,
.event-panel__select:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--input-ring);
}

.event-panel__textarea {
  min-height: 5rem;
  resize: vertical;
}

.event-panel__row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.6rem;
}

.event-panel__type-strip {
  display: flex;
  gap: 0.25rem;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.2rem;
}

.event-panel__type-chip {
  flex: 1;
  padding: 0.4rem 0.5rem;
  border-radius: 6px;
  background: transparent;
  border: none;
  font-size: 0.75rem;
  color: var(--text-muted);
  font-weight: 500;
  cursor: pointer;
  transition: background 0.15s ease, color 0.15s ease;
}

.event-panel__type-chip[aria-pressed="true"] {
  background: var(--primary);
  color: var(--text-inverse);
}

.event-panel__foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  padding: 0.85rem 1.1rem;
  border-top: 1px solid var(--border);
  flex-shrink: 0;
}

/* ── Click-to-create compact popup (§4.1) ──────────────────────────
   Non-docked, floats over the calendar grid where the user clicked.
   Same field set as the panel but minimal — title autofocus, time
   range, days strip, repeat selector, type selector. The popup can
   "expand" via an icon button into the docked event-panel above. */

.event-popup {
  position: absolute;
  z-index: calc(var(--z-modal-backdrop, 11000) - 2);
  background: var(--surface);
  border: 1px solid var(--border-2);
  border-radius: 10px;
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.22);
  width: 22rem;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  animation: event-popup-fade 0.14s ease;
}

.event-popup[hidden] { display: none; }

@keyframes event-popup-fade {
  from { opacity: 0; transform: scale(0.97); }
  to   { opacity: 1; transform: scale(1); }
}

.event-popup__head {
  padding: 0.7rem 0.85rem 0;
}

.event-popup__title-input {
  width: 100%;
  background: transparent;
  border: none;
  outline: none;
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-strong);
  padding: 0;
  font-family: inherit;
}

.event-popup__title-input::placeholder {
  color: var(--text-subtle);
  font-weight: 500;
}

.event-popup__body {
  padding: 0.5rem 0.85rem;
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
}

.event-popup__time-row {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.event-popup__time-row input[type="time"] {
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 0.3rem 0.5rem;
  color: var(--text-strong);
  font-family: inherit;
  font-size: 0.82rem;
}

.event-popup__days-strip {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 0.2rem;
}

.event-popup__day {
  height: 1.7rem;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 4px;
  font-size: 0.7rem;
  color: var(--text-muted);
  cursor: pointer;
  font-weight: 500;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.12s ease, color 0.12s ease;
}

.event-popup__day[aria-pressed="true"] {
  background: var(--primary);
  color: var(--text-inverse);
  border-color: var(--primary);
}

.event-popup__foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.4rem;
  padding: 0.55rem 0.85rem 0.7rem;
  border-top: 1px solid var(--border);
  background: var(--surface-2);
}

.event-popup__expand,
.event-popup__save {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.35rem 0.7rem;
  border-radius: 6px;
  font-size: 0.78rem;
  font-weight: 600;
  cursor: pointer;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  transition: background 0.15s ease, color 0.15s ease;
}

.event-popup__save {
  background: var(--primary);
  color: var(--text-inverse);
  border-color: var(--primary);
}

.event-popup__save:hover {
  background: var(--primary-strong);
}

.event-popup__expand:hover {
  background: var(--surface-3);
  color: var(--primary);
}

/* ── Drag preview block — shown while user click-drags on the time grid
   to select a duration. The schedule-builder JS will move this block
   under the cursor; CSS owns the look. */
.event-drag-preview {
  position: absolute;
  background: var(--primary-bg);
  border: 1.5px solid var(--primary);
  border-radius: 4px;
  pointer-events: none;
  z-index: 50;
  display: flex;
  align-items: flex-start;
  justify-content: flex-start;
  padding: 0.3rem 0.45rem;
  font-size: 0.72rem;
  color: var(--primary);
  font-weight: 600;
  letter-spacing: -0.005em;
}

.event-drag-preview__time {
  font-variant-numeric: tabular-nums;
}


/* ── Ghost block (active click-to-create) ─────────────────────────────
   Lives on the calendar grid as a contenteditable target. Visual
   distinguisher from regular saved events: dashed primary border + light
   primary fill + caret-shaped affordance. Promotes to a normal event
   block once a name is committed (the JS just removes --ghost). */

.event-block--ghost {
  background: var(--primary-bg) !important;
  border: 1.5px dashed var(--primary) !important;
  box-shadow: 0 0 0 1px rgba(91, 108, 240, 0.2);
  cursor: text;
  z-index: 25;
  animation: event-block-ghost-pop 0.16s ease;
}

@keyframes event-block-ghost-pop {
  from { transform: scale(0.985); opacity: 0; }
  to   { transform: scale(1);     opacity: 1; }
}

.event-block--ghost-vanish {
  transform: scale(0.96);
  opacity: 0;
  transition: transform 0.14s ease, opacity 0.14s ease;
}

.event-block--ghost .event-block__title {
  color: var(--primary);
  font-weight: 600;
  outline: none;
  caret-color: var(--primary);
  min-height: 1.1em;
  display: inline-block;
}

.event-block--ghost .event-block__title:empty::before {
  content: 'Untitled';
  color: var(--primary);
  opacity: 0.45;
  pointer-events: none;
}

.event-block--ghost .event-block__time {
  color: var(--primary);
  opacity: 0.7;
}

/* Active edit state on a saved block — the ring goes around the WHOLE
   block (not just the contenteditable title span). The contenteditable
   itself stays outline:none so the block-level ring is the single
   focus indicator. */
.event-block--editing {
  outline: 2px solid var(--primary);
  outline-offset: 1px;
  border-radius: 5px;
  z-index: 30;
}

.event-block--editing .event-block__title,
.event-block--editing .event-block__title:focus {
  outline: none;
  caret-color: var(--text-inverse);
}

.day-cell__event--editing {
  outline: 2px solid var(--primary);
  outline-offset: 1px;
  z-index: 5;
}

.day-cell__event--editing .day-cell__event-title {
  outline: none;
  caret-color: var(--primary);
}

/* Month-view ghost pill in a day cell */
.day-cell__event--ghost {
  border: 1.5px dashed var(--primary);
  background: var(--primary-bg);
  color: var(--primary);
  font-weight: 600;
  cursor: text;
  border-radius: 4px;
  padding: 1px 4px;
}

.day-cell__event--ghost .day-cell__event-title {
  outline: none;
  caret-color: var(--primary);
  display: inline-block;
  min-width: 1ch;
}

.day-cell__event--ghost .day-cell__event-title:empty::before {
  content: 'Untitled';
  opacity: 0.5;
}


/* ── Side modal — Notion-Calendar-style event detail panel ────────────
   Layout mirrors calendar.notion.so's right panel (analysis doc §5):
   header (type select + ⋯ + pop-out + close), big title, time row, date
   row with quick toggles, description, reminder. Theme-token-driven so
   it inherits the app's dark/light palette automatically.
*/

.event-side-modal {
  position: fixed;
  width: 19rem;
  max-height: 90vh;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.32);
  z-index: var(--z-modal, 11001);
  padding: 0.6rem 0.75rem 0.85rem;
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
  overflow-y: auto;
  animation: event-side-modal-fade 0.14s ease;
  font-size: 0.85rem;
}

@keyframes event-side-modal-fade {
  from { opacity: 0; transform: translateX(-4px); }
  to   { opacity: 1; transform: translateX(0); }
}

/* ── Header row ── */
.event-side-modal__head {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  padding-bottom: 0.4rem;
  border-bottom: 1px solid var(--border);
}

/* Segmented Task / Deadline toggle. The thumb pseudo-pill slides between
   the two segments based on data-active on the parent. Click either
   segment to flip. Smooth, theme-token-driven. */
.event-side-modal__type-toggle {
  position: relative;
  display: inline-flex;
  align-items: stretch;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 2px;
  gap: 0;
  flex: 1;
  max-width: 13rem;
  user-select: none;
}

.event-side-modal__type-seg {
  position: relative;
  z-index: 2;
  flex: 1 1 50%;
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: -0.005em;
  padding: 0.32rem 0.65rem;
  border-radius: 999px;
  cursor: pointer;
  transition: color 0.18s ease;
  font-family: inherit;
  text-align: center;
}

.event-side-modal__type-seg[aria-pressed="true"] {
  color: var(--text-inverse);
}

.event-side-modal__type-thumb {
  position: absolute;
  z-index: 1;
  top: 2px;
  bottom: 2px;
  left: 2px;
  width: calc(50% - 2px);
  background: var(--primary);
  border-radius: 999px;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.18);
  transition: transform 0.22s cubic-bezier(0.32, 0.72, 0.34, 1);
  pointer-events: none;
}

.event-side-modal__type-toggle[data-active="deadline"] .event-side-modal__type-thumb {
  transform: translateX(100%);
}

.event-side-modal__head-actions {
  display: inline-flex;
  align-items: center;
  gap: 0.15rem;
}

.event-side-modal__icon-btn {
  width: 1.7rem;
  height: 1.7rem;
  border-radius: 6px;
  background: transparent;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  transition: background 0.12s ease, color 0.12s ease;
}

.event-side-modal__icon-btn:hover {
  background: var(--surface-2);
  color: var(--text-strong);
}

/* ── Title (top, large, primary) ── */
.event-side-modal__title-wrap {
  padding: 0.45rem 0.15rem 0.55rem;
  border-bottom: 1px solid var(--border);
  margin-bottom: 0.25rem;
}

.event-side-modal__title {
  width: 100%;
  border: none;
  outline: none;
  background: transparent;
  color: var(--text-strong);
  font-size: 1.1rem;
  font-weight: 600;
  font-family: inherit;
  letter-spacing: -0.01em;
  padding: 0.3rem 0.25rem;
  border-radius: 4px;
  transition: background 0.12s ease;
}

.event-side-modal__title:hover { background: var(--surface-2); }
.event-side-modal__title:focus { background: var(--surface-2); }

.event-side-modal__title::placeholder {
  color: var(--text-subtle);
  font-weight: 500;
}

/* ── Generic row (icon + content) ── */
.event-side-modal__row {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  font-size: 0.82rem;
  color: var(--text);
  padding: 0.05rem 0;
}

.event-side-modal__row-icon {
  flex-shrink: 0;
  width: 0.9rem;
  text-align: center;
  font-size: 0.78rem;
  color: var(--text-muted);
}

/* Time row */
.event-side-modal__row--time {
  flex-wrap: wrap;
}

.event-side-modal__time {
  background: var(--surface-2);
  border: 1px solid transparent;
  color: var(--text-strong);
  font-family: inherit;
  font-size: 0.82rem;
  padding: 0.2rem 0.4rem;
  border-radius: 5px;
  font-feature-settings: "tnum" on;
  cursor: text;
  transition: background 0.12s ease, border-color 0.12s ease;
}

.event-side-modal__time:hover { background: var(--surface-3); }

.event-side-modal__time:focus {
  outline: none;
  border-color: var(--primary);
  background: var(--surface);
}

.event-side-modal__time:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.event-side-modal__arrow {
  color: var(--text-muted);
  font-size: 0.85rem;
}

.event-side-modal__duration {
  margin-left: auto;
  color: var(--text-muted);
  font-size: 0.75rem;
  font-feature-settings: "tnum" on;
}

/* Date row */
.event-side-modal__row--date {
  padding: 0.05rem 0 0;
}

.event-side-modal__date {
  background: transparent;
  border: 1px solid transparent;
  color: var(--text-strong);
  font-family: inherit;
  font-size: 0.85rem;
  font-weight: 500;
  padding: 0.2rem 0.4rem;
  border-radius: 5px;
  cursor: text;
  font-feature-settings: "tnum" on;
}

.event-side-modal__date:hover { background: var(--surface-2); }

.event-side-modal__date:focus {
  outline: none;
  border-color: var(--primary);
  background: var(--surface);
}

/* Quick toggles row (All-day / Time zone / Repeat) — Notion-style links */
.event-side-modal__quick-toggles {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.7rem;
  padding: 0.2rem 0 0.1rem;
  font-size: 0.78rem;
  color: var(--text-muted);
}

.event-side-modal__qt {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  cursor: pointer;
  user-select: none;
}

.event-side-modal__qt input[type="checkbox"] {
  width: 0.85rem;
  height: 0.85rem;
  margin: 0;
  accent-color: var(--primary);
}

.event-side-modal__qt-btn,
.event-side-modal__qt label {
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-size: 0.78rem;
  padding: 0;
  cursor: pointer;
}

.event-side-modal__qt-btn--placeholder {
  cursor: not-allowed;
  opacity: 0.45;
  text-decoration: line-through;
}

.event-side-modal__qt--repeat {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
}

/* Custom select — used by every <select> inside the modal so we don't
   ship native chrome that doesn't match the rest. The chevron is an
   inline SVG data URL so it tints correctly via background-image and
   stays consistent across light/dark. */
.event-side-modal select,
.event-side-modal__select,
.event-side-modal__qt--repeat select {
  appearance: none;
  -webkit-appearance: none;
  -moz-appearance: none;
  background: var(--surface-2);
  border: 1px solid var(--border);
  color: var(--text-strong);
  font-size: 0.78rem;
  font-family: inherit;
  padding: 0.25rem 1.5rem 0.25rem 0.5rem;
  border-radius: 5px;
  cursor: pointer;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='10' height='6' viewBox='0 0 10 6'><path fill='%239B9B9B' d='M0 0h10L5 6z'/></svg>");
  background-repeat: no-repeat;
  background-position: right 0.45rem center;
  transition: background-color 0.12s ease, border-color 0.12s ease;
}

.event-side-modal select:hover,
.event-side-modal__select:hover,
.event-side-modal__qt--repeat select:hover {
  background-color: var(--surface-3);
}

.event-side-modal select:focus,
.event-side-modal__select:focus,
.event-side-modal__qt--repeat select:focus {
  outline: none;
  border-color: var(--primary);
  background-color: var(--surface);
}

/* Repeat-until row — surfaces when a frequency is selected. */
.event-side-modal__row--repeat-until {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.78rem;
  padding: 0.1rem 0;
}

.event-side-modal__row--repeat-until[hidden] { display: none; }

.event-side-modal__row-label {
  font-size: 0.7rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  font-weight: 600;
  flex-shrink: 0;
}

.event-side-modal__repeat-status {
  margin-left: auto;
  font-size: 0.72rem;
  color: var(--text-muted);
  font-style: italic;
}

/* Divider — hairline, Notion-style */
.event-side-modal__divider {
  height: 1px;
  background: var(--border);
  margin: 0.3rem -0.2rem;
}

/* Description — full-width textarea, no leading icon. */
.event-side-modal__row--desc {
  align-items: stretch;
  padding: 0;
}

.event-side-modal__desc {
  width: 100%;
  flex: 1;
  background: transparent;
  border: 1px solid transparent;
  color: var(--text);
  font-family: inherit;
  font-size: 0.82rem;
  padding: 0.25rem 0.4rem;
  border-radius: 5px;
  resize: vertical;
  min-height: 1.6rem;
  outline: none;
  transition: background 0.12s, border-color 0.12s;
}

.event-side-modal__desc:hover { background: var(--surface-2); }

.event-side-modal__desc:focus {
  border-color: var(--primary);
  background: var(--surface);
}

.event-side-modal__desc::placeholder { color: var(--text-subtle); }

/* Reminder */
.event-side-modal__reminder-label {
  flex: 1;
  color: var(--text-muted);
  font-size: 0.82rem;
}

.event-side-modal__row--reminder select {
  background: var(--surface-2);
  border: 1px solid transparent;
  color: var(--text-strong);
  font-family: inherit;
  font-size: 0.78rem;
  padding: 0.2rem 0.4rem;
  border-radius: 5px;
  cursor: pointer;
}

.event-side-modal__row--reminder select:hover { background: var(--surface-3); }

.event-side-modal__row--reminder select:focus {
  outline: none;
  border-color: var(--primary);
}

/* Legacy classes retained for any inline callers — empty (the structural
   classes above replace these). Old hint / toggle / section CSS no
   longer used by the redesigned modal. */
.event-side-modal__section {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}