/* Zone 3 — the "desk pad": one continuous surface, hairline-divided lanes */
#weekgrid { display: grid; grid-template-columns: repeat(7, 1fr);
  margin: 0 28px 22px; background: var(--plane); border: 1px solid var(--hairline);
  border-radius: 14px; box-shadow: var(--shadow-pad); overflow: hidden; flex: 1;
  align-items: stretch; min-height: 360px; }

.day-col { display: flex; flex-direction: column; position: relative;
  border-left: 1px solid var(--hairline); min-height: 340px; }
.day-col:first-child { border-left: none; }
.day-col.weekend { background: #fcfcfd; }

/* Day header — big tabular date + uppercase weekday */
.day-head { display: flex; align-items: baseline; gap: 7px; padding: 12px 12px 9px;
  border-bottom: 1px solid var(--hairline); }
.day-head .dow { font-size: 11px; font-weight: 700; letter-spacing: .1em;
  text-transform: uppercase; color: var(--ink-faint); }
.day-head .dnum { font-size: 19px; font-weight: 700; line-height: 1;
  color: var(--ink); font-variant-numeric: tabular-nums; }

/* Today lane: accent spine + wash + emphasized header */
.day-col.is-today { background: var(--today-tint); }
.day-col.is-today::before { content: ''; position: absolute; top: 0; left: 0; right: 0;
  height: 3px; background: var(--accent); }
.day-col.is-today .day-head { border-bottom-color: #cfe0f3; }
.day-col.is-today .dow { color: var(--accent); }

/* Events zone (top portion) */
.events { padding: 8px; overflow: hidden; position: relative; min-height: 96px;
  border-bottom: 1px solid var(--hairline); }
.events.expanded { overflow: visible; }
.add-block { display: block; width: 100%; text-align: left; border: none;
  background: none; color: var(--ink-faint); font-size: 12px; font-weight: 600;
  padding: 4px 2px 0; transition: color .12s ease; }
.add-block:hover { background: none; color: var(--accent); }

/* Empty events hint */
.events:not(:has(.block))::before { content: 'Nothing planned'; display: block;
  font-size: 11px; color: var(--ink-faint); opacity: .65; padding: 2px 2px 6px; }
.events.expanded::before, .events:has(.block)::before { content: none; }

/* Notes — ruled paper */
.notes { display: flex; flex-direction: column; flex: 1; }
.notes-label { font-size: 10px; font-weight: 700; letter-spacing: .1em;
  text-transform: uppercase; color: var(--ink-faint); padding: 8px 10px 2px; }
.notes-body { flex: 1; font-size: 12px; line-height: 20px; padding: 0 10px 8px;
  outline: none; overflow-y: auto; white-space: pre-wrap; color: var(--ink);
  background-image: repeating-linear-gradient(var(--plane), var(--plane) 19px, var(--rule) 19px, var(--rule) 20px);
  background-position: 0 0; background-attachment: local; }
.day-col.is-today .notes-body {
  background-image: repeating-linear-gradient(var(--today-tint), var(--today-tint) 19px, #dbe7f5 19px, #dbe7f5 20px); }
.notes-body:focus-visible { outline: 2px solid var(--accent); outline-offset: -2px; border-radius: 4px; }
.notes-body[data-empty]::before { content: attr(data-placeholder);
  color: var(--ink-faint); opacity: .7; font-style: italic; pointer-events: none; }
.notes-body ul, .notes-body ol { margin: 0; padding-left: 18px; }
.notes-body p { margin: 0; }

/* WYSIWYG toolbar — visible only while editing */
.notes-toolbar { display: none; gap: 3px; padding: 4px 10px 0; flex-wrap: wrap; }
.notes.editing .notes-toolbar, .notes:focus-within .notes-toolbar { display: flex; }
.nt-btn { font-size: 12px; line-height: 1; padding: 3px 7px; min-width: 24px;
  border: 1px solid var(--hairline); background: var(--plane); border-radius: 6px;
  color: var(--ink); transition: background-color .12s ease, border-color .12s ease; }
.nt-btn:hover { background: #eef2f7; border-color: var(--ink-faint); }

/* Mobile: swipeable day lanes */
@media (max-width: 720px) {
  #weekgrid { margin: 0 16px 18px; grid-auto-flow: column; grid-template-columns: none;
    grid-auto-columns: 82%; overflow-x: auto; scroll-snap-type: x mandatory; }
  .day-col { scroll-snap-align: start; min-height: 66vh; }
}