:root {
  --bg: #f4f6f8;
  --surface: #ffffff;
  --surface-2: #e9edf1;
  --text: #1a2129;
  --text-dim: #647385;
  --accent: #17b085;
  --accent-dark: #0f8f6b;
  --accent-soft: rgba(23, 176, 133, 0.14);
  --danger: #d64550;
  --border: #dfe4ea;
  --radius: 14px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  height: 100%;
  background: var(--bg);
  color: var(--text);
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  -webkit-tap-highlight-color: transparent;
}

#app { height: 100%; }

.view {
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
}
/* display:flex would otherwise override the hidden attribute */
.view[hidden] { display: none; }
[hidden] { display: none !important; }

/* ---------- Login ---------- */
#view-login {
  align-items: center;
  justify-content: center;
  padding: 24px;
}

.login-card {
  width: 100%;
  max-width: 360px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  text-align: center;
}

.logo {
  font-size: 2.2rem;
  font-weight: 800;
  letter-spacing: -0.03em;
}
.logo span { color: var(--accent); }
.logo-small { font-size: 1.2rem; }

.tagline {
  color: var(--text-dim);
  margin: 0 0 8px;
  line-height: 1.5;
}

.btn {
  border: none;
  border-radius: var(--radius);
  padding: 14px 18px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  min-height: 48px;
}
.btn-primary { background: var(--accent); color: #06281d; }
.btn-primary:active { background: var(--accent-dark); }
.btn-secondary { background: var(--surface); color: var(--text); border: 1px solid var(--border); }
.btn-ghost {
  background: none;
  color: var(--text-dim);
  padding: 8px 10px;
  min-height: 0;
  font-size: 0.85rem;
}

.divider {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--text-dim);
  font-size: 0.85rem;
}
.divider::before, .divider::after {
  content: "";
  flex: 1;
  height: 1px;
  background: var(--surface-2);
}

.guest-form { display: flex; flex-direction: column; gap: 10px; }

input[type="text"] {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
  padding: 14px;
  font-size: 1rem;
  min-height: 48px;
}
input[type="text"]:focus { outline: 2px solid var(--accent); border-color: transparent; }

.note { color: var(--text-dim); font-size: 0.8rem; min-height: 1em; }

/* ---------- Topbar ---------- */
.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  padding: 10px 12px;
  padding-top: calc(10px + env(safe-area-inset-top));
  background: var(--surface);
  position: sticky;
  top: 0;
  z-index: 10;
}
.topbar-right { display: flex; align-items: center; gap: 8px; }
.user-name { color: var(--text-dim); font-size: 0.9rem; }

.main-content {
  flex: 1;
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

/* ---------- Home ---------- */
.room-list { display: flex; flex-direction: column; gap: 10px; }
.room-item {
  background: var(--surface);
  border: none;
  color: var(--text);
  border-radius: var(--radius);
  padding: 16px;
  text-align: left;
  font-size: 1rem;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.room-item .mode-tag {
  font-size: 0.7rem;
  color: var(--text-dim);
  background: var(--surface-2);
  border-radius: 8px;
  padding: 3px 8px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.mode-sheet { display: flex; flex-direction: column; gap: 8px; }
.mode-option {
  background: var(--surface);
  border: 1px solid var(--surface-2);
  border-radius: var(--radius);
  color: var(--text);
  padding: 14px 16px;
  text-align: left;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  gap: 3px;
}
.mode-option span { color: var(--text-dim); font-size: 0.82rem; }
.mode-option:active { border-color: var(--accent); }

/* ---------- Room ---------- */
.members-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  padding: 6px 12px;
  background: var(--surface);
  border-top: 1px solid var(--surface-2);
  font-size: 0.8rem;
}
.member-chip {
  display: inline-block;
  background: var(--surface-2);
  border-radius: 10px;
  padding: 3px 10px;
  margin-right: 6px;
  color: var(--text-dim);
}
.member-chip .cal { color: var(--accent); }
.room-title {
  flex: 1;
  font-weight: 700;
  font-size: 1rem;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.tab-bar { display: flex; gap: 4px; background: var(--surface-2); border-radius: 10px; padding: 3px; }
.tab {
  border: none;
  background: none;
  color: var(--text-dim);
  padding: 6px 12px;
  border-radius: 8px;
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
}
.tab.active { background: var(--surface); color: var(--text); }

.chat-pane {
  flex: 1;
  overflow-y: auto;
  padding: 14px 12px 90px;
}
.messages { display: flex; flex-direction: column; gap: 10px; max-width: 680px; margin: 0 auto; }

.msg { max-width: 86%; border-radius: var(--radius); padding: 10px 14px; line-height: 1.45; white-space: pre-wrap; word-wrap: break-word; }
.msg-user { align-self: flex-end; background: var(--accent-soft); }
.msg-agent { align-self: flex-start; background: var(--surface); }
.msg .author { font-size: 0.72rem; color: var(--text-dim); margin-bottom: 2px; }
.msg-pending { opacity: 0.55; }

.proposals { display: flex; flex-direction: column; gap: 8px; align-self: stretch; }
.proposal-card {
  background: var(--surface);
  border: 1px solid var(--surface-2);
  border-radius: var(--radius);
  padding: 12px 14px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.proposal-card.best { border-color: var(--accent); }
.proposal-card .slot-line { display: flex; align-items: baseline; gap: 8px; }
.proposal-card .slot-when { font-weight: 700; }
.proposal-card .slot-title { color: var(--text-dim); font-size: 0.9rem; }
.proposal-card .why { color: var(--text-dim); font-size: 0.78rem; line-height: 1.4; }
.proposal-card .btn-confirm {
  align-self: flex-end;
  padding: 8px 18px;
  min-height: 40px;
  font-size: 0.9rem;
}
.confirmed-banner {
  background: var(--accent-soft);
  border-radius: var(--radius);
  padding: 10px 14px;
  font-size: 0.9rem;
}

/* ---------- Input bar ---------- */
.input-bar {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 10px 12px calc(10px + env(safe-area-inset-bottom));
  background: linear-gradient(transparent, var(--bg) 30%);
  z-index: 10;
}
.input-bar form { display: flex; gap: 8px; max-width: 680px; margin: 0 auto; }
.input-bar input { flex: 1; min-width: 0; }
.btn-send { min-width: 52px; padding: 0; }

/* ---------- Week grid ---------- */
.week-pane {
  flex: 1;
  overflow: auto;
  padding: 10px 8px 90px;
}
.week-grid {
  display: grid;
  grid-template-columns: 34px repeat(7, minmax(44px, 1fr));
  gap: 2px;
  max-width: 680px;
  margin: 0 auto;
}
.wg-corner { }
.wg-dayhead {
  text-align: center;
  font-size: 0.7rem;
  color: var(--text-dim);
  padding: 4px 0;
  position: sticky;
  top: 0;
  background: var(--bg);
}
.wg-dayhead.today { color: var(--accent); font-weight: 700; }
.wg-hours { position: relative; }
.wg-hourlabel {
  position: absolute;
  right: 4px;
  font-size: 0.62rem;
  color: var(--text-dim);
  transform: translateY(-50%);
}
.wg-daycol {
  position: relative;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 6px;
  overflow: hidden;
}
.wg-block {
  position: absolute;
  left: 2px;
  right: 2px;
  border-radius: 5px;
  font-size: 0.6rem;
  overflow: hidden;
  padding: 2px 4px;
  line-height: 1.2;
  box-shadow: 0 0 0 1px var(--bg); /* hairline gap so adjacent events separate */
}
.wg-blocktime { display: block; font-size: 0.55rem; opacity: 0.7; font-weight: 600; }
.wg-busy { background: #ccd4dd; color: #5a6774; }
.wg-prop { background: var(--accent-soft); border: 1px solid var(--accent); color: var(--accent); }
.wg-conf { background: var(--accent); color: #06281d; font-weight: 700; }
.wg-hourline { position: absolute; left: 0; right: 0; height: 1px; background: rgba(0,0,0,0.05); }

.legend {
  display: flex;
  gap: 16px;
  justify-content: center;
  margin-top: 10px;
  color: var(--text-dim);
  font-size: 0.75rem;
}
.legend .sw { display: inline-block; width: 10px; height: 10px; border-radius: 3px; margin-right: 5px; }
.sw-busy { background: #ccd4dd; }
.sw-prop { background: var(--accent-soft); border: 1px solid var(--accent); }
.sw-conf { background: var(--accent); }

.privacy-note {
  background: var(--surface-2);
  border-radius: var(--radius);
  padding: 8px 12px;
  color: var(--text-dim);
  font-size: 0.78rem;
  line-height: 1.4;
}
.avail-chip {
  margin-left: auto;
  background: var(--surface-2);
  border-radius: 8px;
  padding: 2px 8px;
  font-size: 0.72rem;
  color: var(--text-dim);
}
.avail-chip.all { background: var(--accent-soft); color: var(--accent); }
.confirmed-banner a { color: var(--accent); }

.week-nav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 14px;
  padding-bottom: 6px;
  color: var(--text-dim);
  font-size: 0.85rem;
}
.week-nav .btn { font-size: 1.2rem; padding: 4px 14px; }
.tz-note { padding: 4px 12px; margin: 0; background: var(--surface); }

.confirmed-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  padding: 2px 0;
}
.btn-remove {
  background: none;
  border: none;
  color: var(--text-dim);
  font-size: 1rem;
  cursor: pointer;
  padding: 6px 10px;
  min-width: 40px;
  min-height: 36px;
}
.btn-remove:active { color: var(--danger); }

/* ---------- calendar picker ---------- */
.cal-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px 16px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.cal-card-head { display: flex; align-items: center; justify-content: space-between; }
.cal-title { font-weight: 600; }
.cal-status { color: var(--text-dim); font-size: 0.8rem; }
.cal-list { display: flex; flex-direction: column; gap: 2px; }
.cal-row {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 4px;
  cursor: pointer;
  border-radius: 8px;
}
.cal-row:active { background: var(--surface-2); }
.cal-row input { width: 20px; height: 20px; accent-color: var(--accent); flex-shrink: 0; }
.cal-dot { width: 10px; height: 10px; border-radius: 50%; flex-shrink: 0; }
.cal-name { font-size: 0.95rem; }
#btn-cal-toggle { align-self: flex-start; padding: 4px 0; }

/* ---------- my-calendar view ---------- */
.cal-actions { display: flex; gap: 14px; align-items: center; }
#btn-view-cal { align-self: flex-start; padding: 4px 0; color: var(--accent); }
.week-nav-inline { flex: 1; justify-content: flex-end; }
.wg-cal {
  background: var(--accent-soft);
  color: var(--text);
  border-left: 3px solid var(--accent);
  font-weight: 500;
}
.wg-allday {
  min-height: 22px;
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: 1px;
  position: sticky;
  top: 0;
  background: var(--bg);
}
.wg-allday-chip {
  background: var(--accent-soft);
  color: var(--text);
  border-radius: 4px;
  font-size: 0.58rem;
  padding: 1px 4px;
  overflow: hidden;
  white-space: nowrap;
  text-overflow: ellipsis;
}

/* ---------- my-calendar day view + nav ---------- */
.mycal-nav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
  padding: 6px 10px;
  background: var(--surface);
  border-top: 1px solid var(--surface-2);
}
.mycal-label { font-weight: 600; color: var(--text); font-size: 0.95rem; flex: 1; text-align: center; }
.mycal-today { color: var(--accent); font-weight: 600; }
.mycal-nav .btn { font-size: 1.15rem; padding: 4px 14px; }

.week-grid.day-grid { grid-template-columns: 44px 1fr; }
.wg-dayblock { font-size: 0.78rem; padding: 4px 6px; }
.wg-dayblock .wg-blocktime { font-size: 0.66rem; }
.wg-dayhead.tappable { cursor: pointer; }
.wg-dayhead.tappable:active { color: var(--accent); }

/* ---------- month view ---------- */
.week-grid.month-grid {
  grid-template-columns: repeat(7, 1fr);
  gap: 2px;
}
.mg-wd {
  text-align: center;
  font-size: 0.68rem;
  color: var(--text-dim);
  padding: 4px 0 2px;
  position: sticky;
  top: 0;
  background: var(--bg);
}
.mg-cell {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 6px;
  min-height: 86px;
  padding: 2px;
  overflow: hidden;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.mg-cell:active { border-color: var(--accent); }
.mg-out { opacity: 0.45; }
.mg-num {
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--text-dim);
  text-align: center;
  line-height: 1.5;
}
.mg-today { border-color: var(--accent); }
.mg-today .mg-num {
  color: #fff;
  background: var(--accent);
  border-radius: 50%;
  width: 20px;
  height: 20px;
  margin: 0 auto;
  line-height: 20px;
}
.mg-chip {
  background: var(--accent-soft);
  border-left: 2px solid var(--accent);
  color: var(--text);
  border-radius: 3px;
  font-size: 0.55rem;
  line-height: 1.35;
  padding: 1px 3px;
  overflow: hidden;
  white-space: nowrap;
  text-overflow: ellipsis;
  flex-shrink: 0;
}
.mg-more { font-size: 0.58rem; color: var(--text-dim); text-align: center; }