:root {
  --bg: #f5f7fb;
  --card: #ffffff;
  --ink: #1f2937;
  --muted: #6b7280;
  --accent: #4f46e5;
  --accent-ink: #ffffff;
  --yes: #16a34a;
  --maybe: #f59e0b;
  --no: #ef4444;
  --border: #e5e7eb;
  --grid-line: #eef1f6;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--ink);
  line-height: 1.5;
}

header { text-align: center; padding: 2rem 1rem 0.5rem; }
header h1 { margin: 0; font-size: 1.8rem; }
header h1 a { color: var(--ink); text-decoration: none; }
.tagline { color: var(--muted); margin: 0.25rem 0 0; }

.container { max-width: 900px; margin: 0 auto; padding: 1rem; }

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.25rem 1.5rem;
  margin-bottom: 1.25rem;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.04);
}

h2 { margin-top: 0; }
.muted { color: var(--muted); }
.hint { color: var(--muted); font-size: 0.9rem; margin: 0.5rem 0 0.75rem; }

.fields { display: grid; grid-template-columns: 1fr 1fr; gap: 0.5rem 1rem; }
.fields label:first-child { grid-column: 1 / -1; }
label { display: block; font-weight: 600; margin: 0.4rem 0; }
input {
  width: 100%;
  padding: 0.5rem 0.65rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  font: inherit;
  font-weight: 400;
  margin-top: 0.2rem;
}

button {
  background: var(--accent);
  color: var(--accent-ink);
  border: none;
  padding: 0.55rem 1rem;
  border-radius: 8px;
  font: inherit;
  font-weight: 600;
  cursor: pointer;
}
button:hover { filter: brightness(1.05); }
button:disabled { opacity: 0.5; cursor: default; }
button.secondary { background: #eef2ff; color: var(--accent); padding: 0.4rem 0.7rem; }

/* toolbar: durations + week nav */
.toolbar {
  display: flex; align-items: center; justify-content: space-between;
  gap: 1rem; flex-wrap: wrap; margin-top: 1rem;
}
.toolbar-label { font-weight: 600; margin-right: 0.5rem; color: var(--muted); }
.durations { display: flex; align-items: center; gap: 0.35rem; }
.dur {
  background: #f3f4f6; color: var(--ink); font-weight: 600;
  padding: 0.4rem 0.7rem; border: 1px solid var(--border);
}
.dur.active { background: var(--accent); color: var(--accent-ink); border-color: var(--accent); }

.weeknav { display: flex; align-items: center; gap: 0.5rem; }
.week-label { font-weight: 600; min-width: 12rem; text-align: center; }
.name-field { margin: 0; font-weight: 600; }
.name-field input { width: 12rem; }

/* ---- calendar ---- */
.cal { border: 1px solid var(--border); border-radius: 10px; overflow: hidden; user-select: none; }
.cal-row { display: grid; grid-template-columns: 56px repeat(7, 1fr); }
.cal-header { background: #f9fafb; border-bottom: 1px solid var(--border); }
.cal-corner { border-right: 1px solid var(--border); }
.cal-dayhead {
  padding: 0.4rem 0.25rem; text-align: center; font-size: 0.8rem; font-weight: 600;
  border-right: 1px solid var(--border);
}
.cal-dayhead:last-child { border-right: none; }
.cal-dayhead.today { color: var(--accent); background: #eef2ff; }

.cal-body { position: relative; }
.cal-axis { position: relative; border-right: 1px solid var(--border); }
.cal-hour {
  position: absolute; right: 6px; transform: translateY(-50%);
  font-size: 0.7rem; color: var(--muted);
}
.cal-col {
  position: relative;
  border-right: 1px solid var(--border);
  background-image: linear-gradient(to bottom, var(--grid-line) 1px, transparent 1px);
  background-size: 100% 52px; /* one hour = 2 * SLOT_PX */
  cursor: crosshair;
}
.cal-col:last-child { border-right: none; }

/* hover preview (outlined block) */
.cal-preview {
  position: absolute; left: 2px; right: 2px;
  border: 2px dashed var(--accent);
  border-radius: 6px;
  background: rgba(79, 70, 229, 0.08);
  pointer-events: none;
  z-index: 3;
}

/* Google Calendar connect bar */
.gcal-bar { margin: 0.25rem 0 0.75rem; }
.gcal-btn { display: inline-flex; align-items: center; gap: 0.4rem; }
.gcal-btn.connected {
  background: rgba(22, 163, 74, 0.12);
  color: #15803d;
  cursor: default;
}

/* overlaid Google Calendar events (read-only, behind everything) */
.cal-event {
  position: absolute; left: 1px; right: 1px;
  z-index: 0;
  pointer-events: none;
  border-radius: 5px;
  background: repeating-linear-gradient(
    45deg, rgba(107,114,128,0.16), rgba(107,114,128,0.16) 6px,
    rgba(107,114,128,0.09) 6px, rgba(107,114,128,0.09) 12px);
  border: 1px solid rgba(107,114,128,0.35);
  color: #4b5563;
  font-size: 0.66rem;
  padding: 1px 4px;
  overflow: hidden;
  white-space: nowrap;
  text-overflow: ellipsis;
}

/* placed blocks */
.cal-block {
  position: absolute; left: 2px; right: 2px;
  z-index: 2;
  border-radius: 6px;
  font-size: 0.72rem;
  padding: 2px 5px;
  overflow: hidden;
  cursor: pointer;
  box-shadow: 0 1px 2px rgba(0,0,0,0.12);
}
.cal-block.selected {
  background: var(--accent); color: #fff;
  border: 1px solid var(--accent);
}
.cal-block.selected:hover { filter: brightness(1.08); }

/* vote blocks (poll view) */
.cal-block.vote {
  background: #eef2ff; color: var(--ink);
  border: 1px solid #c7d2fe;
  display: flex; flex-direction: column; justify-content: space-between;
}
.cal-block.vote .blk-count { font-weight: 700; color: var(--accent); align-self: flex-end; }
.cal-block.vote.mine-yes { background: rgba(22,163,74,0.18); border-color: var(--yes); }
.cal-block.vote.mine-maybe { background: rgba(245,158,11,0.20); border-color: var(--maybe); }
.cal-block.vote.mine-no { background: rgba(239,68,68,0.14); border-color: var(--no); }

.create-footer {
  display: flex; align-items: center; justify-content: space-between;
  gap: 1rem; margin-top: 1rem; flex-wrap: wrap;
}

.share { display: flex; gap: 0.5rem; align-items: center; flex-wrap: wrap; margin-top: 1rem; }
.share span { font-weight: 600; }
.share input { flex: 1 1 240px; margin-top: 0; }

.chip { padding: 0 0.4rem; border-radius: 6px; font-weight: 700; font-size: 0.8rem; }
.chip.yes { background: rgba(22,163,74,0.18); color: var(--yes); }
.chip.maybe { background: rgba(245,158,11,0.20); color: #b45309; }
.chip.no { background: rgba(239,68,68,0.14); color: var(--no); }

/* results table */
table.grid { width: 100%; border-collapse: collapse; margin-top: 0.5rem; font-size: 0.85rem; }
table.grid th, table.grid td { border: 1px solid var(--border); padding: 0.45rem 0.5rem; text-align: center; }
table.grid th:first-child, table.grid td:first-child { text-align: left; }
table.grid tr:first-child th { background: #f9fafb; }
.cell.yes { background: rgba(22,163,74,0.15); color: var(--yes); font-weight: 700; }
.cell.maybe { background: rgba(245,158,11,0.15); color: #b45309; font-weight: 700; }
.cell.no { background: rgba(239,68,68,0.08); color: var(--no); }

footer { text-align: center; color: var(--muted); padding: 2rem 1rem; }
.error { color: var(--no); }

@media (max-width: 640px) {
  .fields { grid-template-columns: 1fr; }
  .week-label { min-width: 8rem; font-size: 0.85rem; }
}