/* ── Reset & base ────────────────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg:      #0f1117;
  --bg-2:    #1a1d27;
  --bg-3:    #22263a;
  --border:  #2e3250;
  --text:    #e8eaf6;
  --text-2:  #8b92b8;
  --text-3:  #5c6390;
  --accent:  #6c7ef7;
  --accent-h:#8693ff;
  --danger:  #e05c5c;
  --success: #4caf6c;

  --status-open:       #4db6ac;
  --status-come_along: #f9a825;
  --status-private:    #78909c;
  --loc-in-town:       #6a9b6a;

  --r:  8px;
  --rl: 14px;
  --shadow: 0 4px 24px rgba(0,0,0,0.45);

  font-family: 'Inter', 'Segoe UI', system-ui, sans-serif;
  font-size: 15px;
  line-height: 1.5;
  color: var(--text);
  background: var(--bg);
}

body { min-height: 100vh; }
a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-h); }

/* ── Buttons ─────────────────────────────────────────────────────────────────── */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 0.3rem;
  padding: 0.45rem 1rem; border-radius: var(--r);
  font-size: 0.85rem; font-weight: 500; cursor: pointer;
  border: none; transition: background .15s, color .15s, opacity .15s;
  white-space: nowrap; line-height: 1;
}
.btn:disabled { opacity: .4; cursor: not-allowed; }
.btn-primary   { background: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-h); }
.btn-secondary { background: var(--bg-3); color: var(--text); border: 1px solid var(--border); }
.btn-secondary:hover { background: var(--border); }
.btn-ghost     { background: transparent; color: var(--text-2); }
.btn-ghost:hover { color: var(--text); background: var(--bg-3); }
.btn-danger    { background: transparent; color: var(--danger); border: 1px solid var(--danger); }
.btn-danger:hover { background: var(--danger); color: #fff; }
.btn-sm { padding: 0.3rem 0.65rem; font-size: 0.78rem; }
.icon-btn { padding: 0.3rem 0.6rem; font-size: 1.1rem; }

/* ── Inputs ──────────────────────────────────────────────────────────────────── */
input[type=text], input[type=date] {
  background: var(--bg-3); border: 1px solid var(--border); color: var(--text);
  border-radius: var(--r); padding: 0.48rem 0.75rem; font-size: 0.875rem; width: 100%;
  outline: none; transition: border-color .15s;
}
input[type=text]:focus, input[type=date]:focus { border-color: var(--accent); }
input::placeholder { color: var(--text-3); }
.field { display: flex; flex-direction: column; gap: 0.4rem; margin-bottom: 1rem; }
.field label { font-size: 0.82rem; font-weight: 500; color: var(--text-2); }
.hint { color: var(--text-3); font-weight: 400; }

/* ── Utils ───────────────────────────────────────────────────────────────────── */
.hidden { display: none !important; }
.error-message {
  background: rgba(224,92,92,.12); border: 1px solid var(--danger);
  color: #ff8a8a; border-radius: var(--r); padding: .55rem .85rem; font-size: .82rem; margin-top: .4rem;
}

/* ── Toast ───────────────────────────────────────────────────────────────────── */
#toast-container { position: fixed; bottom: 1.2rem; right: 1.2rem; display: flex; flex-direction: column; gap: .4rem; z-index: 9999; }
.toast {
  background: var(--bg-3); border: 1px solid var(--border); color: var(--text);
  padding: .55rem .9rem; border-radius: var(--r); font-size: .82rem;
  box-shadow: var(--shadow); animation: toast-in .2s ease; max-width: 260px;
}
.toast.success { border-color: var(--success); color: #7ddf97; }
.toast.error   { border-color: var(--danger);  color: #ff8a8a; }
@keyframes toast-in { from { opacity:0; transform:translateY(6px); } to { opacity:1; transform:none; } }

/* ── Landing ─────────────────────────────────────────────────────────────────── */
.landing { max-width: 560px; margin: 0 auto; padding: 3rem 1.25rem; }
.landing-header { text-align: center; margin-bottom: 2.5rem; }
.logo { font-size: 1.9rem; font-weight: 700; margin-bottom: .4rem; }
.tagline { color: var(--text-2); font-size: .95rem; }
.groups-list h2 { font-size: .78rem; font-weight: 600; color: var(--text-3); text-transform: uppercase; letter-spacing: .08em; margin-bottom: .6rem; }
.group-cards { display: flex; flex-direction: column; gap: .4rem; margin-bottom: 1.5rem; }
.group-card {
  display: flex; align-items: center; gap: .65rem;
  background: var(--bg-2); border: 1px solid var(--border); border-radius: var(--rl);
  padding: .9rem 1.1rem; color: var(--text); transition: border-color .15s, background .15s;
}
.group-card:hover { border-color: var(--accent); background: var(--bg-3); color: var(--text); }
.group-card-name { font-weight: 600; flex: 1; }
.group-card-city { font-size: .78rem; color: var(--text-3); }
.group-card-arrow { color: var(--text-3); }
.create-group-cta { text-align: center; }
.empty-state { text-align: center; color: var(--text-2); padding: 1.5rem 0 1rem; }

/* ── Create group ────────────────────────────────────────────────────────────── */
.page-container { max-width: 640px; margin: 0 auto; padding: 2rem 1.25rem; }
.page-header { margin-bottom: 1.5rem; }
.page-header h1 { font-size: 1.4rem; font-weight: 700; }
.back-link { display: inline-block; color: var(--text-3); font-size: .82rem; margin-bottom: .4rem; }
.back-link:hover { color: var(--text-2); }
.form-card { background: var(--bg-2); border: 1px solid var(--border); border-radius: var(--rl); padding: 1.5rem; }
.form-section { margin-bottom: 1.75rem; padding-bottom: 1.75rem; border-bottom: 1px solid var(--border); }
.form-section:last-of-type { border-bottom: none; margin-bottom: 0; }
.form-section h2 { font-size: .9rem; font-weight: 600; margin-bottom: .2rem; }
.section-hint { font-size: .78rem; color: var(--text-3); margin-bottom: .65rem; }
.tag-list { display: flex; flex-wrap: wrap; gap: .35rem; margin-bottom: .4rem; min-height: 28px; }
.tag {
  display: inline-flex; align-items: center; gap: .3rem;
  background: var(--bg-3); border: 1px solid var(--border);
  color: var(--text); border-radius: 99px; padding: .18rem .55rem .18rem .7rem; font-size: .78rem;
}
.tag-remove { cursor: pointer; color: var(--text-3); font-size: .72rem; }
.tag-remove:hover { color: var(--danger); }
.add-row { display: flex; gap: .4rem; }
.add-row input { flex: 1; }
.challenge-block { background: var(--bg-3); border: 1px solid var(--border); border-radius: var(--r); padding: .9rem; margin-bottom: .65rem; }
.challenge-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: .65rem; }
.challenge-header span { font-size: .8rem; font-weight: 600; color: var(--text-2); }
.options-grid { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: .4rem; }
.option-row { display: flex; flex-direction: column; gap: .25rem; }
.option-row label { font-size: .72rem; color: var(--text-3); }
.correct-row { display: flex; align-items: center; gap: .45rem; margin-top: .45rem; font-size: .78rem; color: var(--text-2); }
.correct-row select { background: var(--bg-3); border: 1px solid var(--border); color: var(--text); border-radius: var(--r); padding: .28rem .5rem; font-size: .78rem; }
.form-actions { padding-top: 1.25rem; display: flex; justify-content: flex-end; }

/* ── Auth & member screens ───────────────────────────────────────────────────── */
.screen { min-height: 100vh; display: flex; align-items: flex-start; justify-content: center; padding: 3rem 1.25rem; }
.auth-card { background: var(--bg-2); border: 1px solid var(--border); border-radius: var(--rl); padding: 1.75rem; width: 100%; max-width: 480px; box-shadow: var(--shadow); }
.auth-card h1 { font-size: 1.4rem; font-weight: 700; margin-bottom: .2rem; }
.auth-intro { color: var(--text-2); margin-bottom: 1.25rem; font-size: .9rem; }
.challenge-item { margin-bottom: 1.1rem; }
.challenge-item p { font-weight: 500; margin-bottom: .45rem; font-size: .9rem; }
.challenge-options { display: flex; flex-direction: column; gap: .35rem; }
.challenge-option {
  display: flex; align-items: center; gap: .55rem;
  background: var(--bg-3); border: 1px solid var(--border); border-radius: var(--r);
  padding: .5rem .8rem; cursor: pointer; transition: border-color .12s; font-size: .85rem;
}
.challenge-option:hover { border-color: var(--accent); }
.challenge-option.selected { border-color: var(--accent); background: rgba(108,126,247,.1); }
.challenge-option input[type=radio] { accent-color: var(--accent); flex-shrink: 0; }
.member-select-grid { display: flex; flex-wrap: wrap; gap: .5rem; }
.member-btn {
  display: inline-flex; align-items: center; gap: .45rem;
  background: var(--bg-3); border: 2px solid var(--border); border-radius: var(--r);
  padding: .55rem .9rem; cursor: pointer; font-size: .88rem; font-weight: 500;
  transition: all .12s; color: var(--text);
}
.member-btn:hover { border-color: var(--accent); background: rgba(108,126,247,.1); }
.member-dot { width: 9px; height: 9px; border-radius: 50%; flex-shrink: 0; }

/* ── App layout — vertical stack ─────────────────────────────────────────────── */
#screen-main {
  display: flex; flex-direction: column;
  height: 100vh;
  min-height: 0;
}

/* Nav */
.app-nav {
  display: flex; align-items: center; gap: .6rem;
  padding: .6rem 1rem; background: var(--bg-2);
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}
.nav-logo { font-size: 1.2rem; color: var(--text); flex-shrink: 0; }
.nav-group-name { font-weight: 600; color: var(--text); font-size: .9rem; flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.nav-right { display: flex; align-items: center; gap: .4rem; flex-shrink: 0; }
.nav-member { font-size: .8rem; color: var(--text-2); }

/* Toolbar */
.calendar-toolbar {
  display: flex; align-items: center; gap: .5rem;
  padding: .5rem .9rem; border-bottom: 1px solid var(--border);
  background: var(--bg-2); flex-shrink: 0;
}
.calendar-month-title { font-size: .95rem; font-weight: 600; min-width: 130px; text-align: center; }
.view-toggle { display: flex; gap: .2rem; margin-left: auto; }
.view-toggle .btn { background: var(--bg-3); color: var(--text-2); }
.view-toggle .btn.active { background: var(--accent); color: #fff; }

/* Calendar scrollable area */
.calendar-container {
  flex: 1 1 0;
  overflow: auto;
  -webkit-overflow-scrolling: touch;
  padding: 0;
  min-height: 0;
  width: 100%;
}
.calendar-loading { color: var(--text-3); padding: 2rem; text-align: center; font-size: .9rem; }

/* Grid */
.calendar-grid {
  display: grid;
  width: 100%;
  /* columns are set inline per render, with minmax so they stretch */
}

.cal-header-cell {
  background: var(--bg-2); padding: .4rem .5rem;
  font-size: .72rem; font-weight: 600; color: var(--text-2);
  border-bottom: 2px solid var(--border);
  border-right: 1px solid var(--border);
  text-align: center; position: sticky; top: 0; z-index: 10;
}
.cal-header-cell:last-child { border-right: none; }
.member-name-wrap { display: block; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; max-width: 80px; margin: 0 auto; }
.member-color-bar { width: 20px; height: 3px; border-radius: 2px; margin: 3px auto 0; }

.cal-day-cell {
  background: var(--bg); padding: .2rem .4rem;
  font-size: .72rem; color: var(--text-3);
  border-bottom: 1px solid var(--border);
  border-right: 1px solid var(--border);
  white-space: nowrap; display: flex; align-items: center; gap: .25rem;
  position: sticky; left: 0; z-index: 5; background: var(--bg);
}
.cal-day-cell.today { color: var(--accent); }
.cal-day-cell.weekend { background: var(--bg-2); }
.cal-day-num  { font-weight: 600; font-size: .78rem; }
.cal-day-name { color: var(--text-3); font-size: .65rem; }

.cal-entry-cell {
  background: var(--bg); padding: 2px 3px;
  border-bottom: 1px solid var(--border);
  border-right: 1px solid var(--border);
  min-height: 28px; vertical-align: middle;
}
.cal-entry-cell:last-child { border-right: none; }
.cal-entry-cell.today-row { background: rgba(108,126,247,.04); }
.cal-entry-cell.own-empty { cursor: pointer; }
.cal-entry-cell.own-empty:hover { background: rgba(108,126,247,.07); }

.entry-block {
  border-radius: 3px; padding: 2px 5px;
  font-size: .7rem; font-weight: 500; color: #fff;
  cursor: default; overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
  transition: opacity .1s; margin-bottom: 2px;
}
.entry-block:last-child { margin-bottom: 0; }
.entry-block.status-open      { background: var(--status-open); }
.entry-block.status-come_along { background: var(--status-come_along); color: #000; }
.entry-block.status-private   { background: var(--status-private); }
.entry-block.own-entry        { box-shadow: inset 0 0 0 1px rgba(255,255,255,.25); }
.entry-block.loc-in-town      { background: var(--loc-in-town) !important; }

/* Tooltip */
.entry-tooltip {
  position: fixed; z-index: 500;
  background: var(--bg-2); border: 1px solid var(--border);
  border-radius: var(--r); padding: .55rem .75rem;
  font-size: .78rem; max-width: 200px; box-shadow: var(--shadow); pointer-events: none;
}
.tt-location { font-weight: 600; margin-bottom: .15rem; }
.tt-status   { font-size: .7rem; color: var(--text-2); margin-bottom: .2rem; }
.tt-note     { color: var(--text-3); font-style: italic; margin-bottom: .15rem; }
.tt-dates    { font-size: .65rem; color: var(--text-3); }

/* Legend */
.legend {
  display: flex; gap: 1rem; padding: .5rem 1rem;
  border-top: 1px solid var(--border); font-size: .75rem; color: var(--text-2);
  flex-shrink: 0; background: var(--bg-2);
}
.legend-item { display: flex; align-items: center; gap: .35rem; }
.legend-dot  { width: 9px; height: 9px; border-radius: 2px; flex-shrink: 0; }
.legend-dot.status-open       { background: var(--status-open); }
.legend-dot.status-come_along { background: var(--status-come_along); }
.legend-dot.status-private    { background: var(--status-private); }

/* ── Modal ───────────────────────────────────────────────────────────────────── */
.modal-overlay {
  position: fixed; inset: 0; background: rgba(0,0,0,.65);
  display: flex; align-items: center; justify-content: center;
  z-index: 400; padding: 1rem;
}
.modal {
  background: var(--bg-2); border: 1px solid var(--border); border-radius: var(--rl);
  width: 100%; max-width: 480px; box-shadow: var(--shadow); max-height: 90vh; overflow-y: auto;
}
.modal-header { display: flex; justify-content: space-between; align-items: center; padding: 1.1rem 1.25rem; border-bottom: 1px solid var(--border); }
.modal-header h2 { font-size: .95rem; font-weight: 600; }
.modal-close { background: none; border: none; color: var(--text-3); font-size: 1rem; cursor: pointer; padding: 0; }
.modal-close:hover { color: var(--text); }
.modal-body { padding: 1.1rem 1.25rem; }
.modal-footer { display: flex; justify-content: space-between; align-items: center; padding: .9rem 1.25rem; border-top: 1px solid var(--border); }
.modal-footer-right { display: flex; gap: .4rem; }

.date-range-row { display: flex; align-items: center; gap: .4rem; }
.date-range-row span { color: var(--text-3); font-size: .8rem; white-space: nowrap; }
.date-range-row input { flex: 1; }

.location-picker { display: flex; flex-wrap: wrap; gap: .35rem; margin-bottom: .4rem; }
.loc-btn {
  padding: .27rem .7rem; border-radius: 99px; border: 1px solid var(--border);
  background: var(--bg-3); color: var(--text-2); font-size: .78rem; cursor: pointer; transition: all .12s;
}
.loc-btn:hover, .loc-btn.selected { border-color: var(--accent); color: var(--accent); background: rgba(108,126,247,.1); }

.status-picker { display: flex; flex-direction: column; gap: .35rem; }
.status-option {
  display: flex; align-items: center; gap: .55rem;
  background: var(--bg-3); border: 1px solid var(--border); border-radius: var(--r);
  padding: .5rem .8rem; cursor: pointer; transition: border-color .12s;
}
.status-option:has(input:checked) { border-color: var(--accent); }
.status-label { font-size: .82rem; }
.status-label.open       { color: var(--status-open); }
.status-label.come_along { color: var(--status-come_along); }
.status-label.private    { color: var(--status-private); }

/* ── Mobile ──────────────────────────────────────────────────────────────────── */
@media (max-width: 600px) {
  :root { font-size: 16px; }
  .options-grid { grid-template-columns: 1fr; }
  .nav-member { display: none; }
  .date-range-row { flex-direction: column; align-items: stretch; }
  .date-range-row span { text-align: center; }
  .legend { flex-wrap: wrap; gap: .6rem; }

  /* calendar-container handles scroll for both orientations */
  .cal-entry-cell { min-height: 36px; }
  .entry-block    { padding: 3px 6px; font-size: .75rem; }
  .cal-day-num    { font-size: .82rem; }
}

/* ── Settings page ───────────────────────────────────────────────────────────── */
.settings-container { max-width: 680px; margin: 0 auto; padding: 1.5rem 1.25rem; }
.settings-section {
  background: var(--bg-2); border: 1px solid var(--border); border-radius: var(--rl);
  padding: 1.25rem; margin-bottom: 1rem;
}
.settings-section h2 { font-size: .9rem; font-weight: 600; margin-bottom: .9rem; color: var(--text); }
.settings-list { display: flex; flex-direction: column; gap: .4rem; margin-bottom: .75rem; }
.settings-row {
  display: flex; align-items: center; gap: .5rem; flex-wrap: wrap;
  background: var(--bg-3); border: 1px solid var(--border); border-radius: var(--r);
  padding: .45rem .75rem;
}
.settings-row-label { flex: 1; font-size: .85rem; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.color-input { font-size: .75rem !important; padding: .2rem .4rem !important; width: 80px !important; }
.empty-hint { font-size: .82rem; color: var(--text-3); padding: .25rem 0; }
.danger-btn { color: var(--danger) !important; }
.danger-btn:hover { background: rgba(224,92,92,.12) !important; }
.inline-edit-row { display: flex; gap: .4rem; }
.inline-edit-row input { flex: 1; }
.danger-zone h2 { color: var(--danger); }

/* ── Transposed calendar (mobile) ────────────────────────────────────────────── */
.cal-transposed {
  width: 100%;
  /* scrolling handled by parent .calendar-container */
}

.cal-table {
  border-collapse: collapse;
  width: max-content;
  min-width: 100%;
}

/* Sticky member name column — rotated 90deg to save horizontal space */
.cal-td-member {
  position: sticky;
  left: 0;
  z-index: 10;
  background: var(--bg-2);
  border-right: 2px solid var(--border);
  border-bottom: 1px solid var(--border);
  /* Fixed narrow width — text rotates inside */
  width: 32px;
  min-width: 32px;
  max-width: 32px;
  padding: 0;
  text-align: center;
  vertical-align: middle;
}

.cal-td-member-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 4px;
  padding: .5rem 0;
  height: 100%;
}

.cal-member-name {
  font-size: .7rem;
  font-weight: 600;
  white-space: nowrap;
  writing-mode: vertical-rl;
  text-orientation: mixed;
  transform: rotate(180deg);  /* read bottom-to-top */
  overflow: hidden;
  max-height: 80px;
  text-overflow: ellipsis;
}

/* Sticky corner cell */
.cal-th-corner {
  position: sticky;
  left: 0;
  z-index: 20;
  background: var(--bg-2);
  border-right: 2px solid var(--border);
  border-bottom: 2px solid var(--border);
  width: 32px;
  min-width: 32px;
}

/* Day header cells */
.cal-th-day {
  background: var(--bg-2);
  padding: .35rem .5rem;
  text-align: center;
  border-bottom: 2px solid var(--border);
  border-right: 1px solid var(--border);
  min-width: 56px;
  white-space: nowrap;
  font-size: .72rem;
  font-weight: 600;
  color: var(--text-2);
  position: sticky;
  top: 0;
  z-index: 5;
}
.cal-th-day:last-child { border-right: none; }
.cal-th-day.today { color: var(--accent); }
.cal-th-day.weekend { background: var(--bg-3); }
.cal-th-day .cal-day-num { display: block; font-size: .82rem; }
.cal-th-day .cal-day-name { display: block; font-size: .65rem; color: var(--text-3); }

/* Entry cells in transposed table */
.cal-table .cal-entry-cell {
  border-bottom: 1px solid var(--border);
  border-right: 1px solid var(--border);
  padding: 2px 3px;
  min-width: 56px;
  min-height: 34px;
  vertical-align: middle;
}
.cal-table .cal-entry-cell:last-child { border-right: none; }
.cal-table .cal-entry-cell.today-row { background: rgba(108,126,247,.06); }
.cal-table .cal-entry-cell.own-empty { cursor: pointer; }
.cal-table .cal-entry-cell.own-empty:hover,
.cal-table .cal-entry-cell.own-empty:active { background: rgba(108,126,247,.1); }

/* ── Footer ──────────────────────────────────────────────────────────────────── */
.site-footer {
  margin-top: 3rem;
  border-top: 1px solid var(--border);
  padding-top: 1.25rem;
  font-size: 0.78rem;
  color: var(--text-3);
  line-height: 1.8;
  text-align: center;
}
.site-footer a { color: var(--text-3); text-decoration: underline; }
.site-footer a:hover { color: var(--text-2); }

/* ── Disclaimer page ─────────────────────────────────────────────────────────── */
.disclaimer-page { padding: 2.5rem 1.25rem; }
.disclaimer-card { max-width: 640px; margin: 0 auto; width: 100%; }
.disclaimer-card { background: var(--bg-2); border: 1px solid var(--border); border-radius: var(--rl); padding: 2rem; }
.disclaimer-card h1 { font-size: 1.3rem; font-weight: 700; margin-bottom: 1.25rem; }
.disclaimer-card h2 { font-size: .9rem; font-weight: 600; margin: 1.25rem 0 .4rem; color: var(--text-2); }
.disclaimer-card p, .disclaimer-card li { font-size: .875rem; color: var(--text-2); line-height: 1.65; }
.disclaimer-card ul { padding-left: 1.25rem; display: flex; flex-direction: column; gap: .4rem; margin-top: .25rem; }
.disclaimer-card a { color: var(--accent); }
.disclaimer-card a:hover { color: var(--accent-h); }
.disclaimer-meta {
  display: grid; grid-template-columns: auto 1fr; gap: .3rem 1rem;
  background: var(--bg-3); border: 1px solid var(--border); border-radius: var(--r);
  padding: .75rem 1rem; margin-bottom: 1.25rem; font-size: .85rem;
}
.disclaimer-meta dt { color: var(--text-3); font-weight: 500; }
.disclaimer-meta dd { color: var(--text); }

/* ── Also-for picker ─────────────────────────────────────────────────────────── */
.also-for-list {
  display: flex;
  flex-wrap: wrap;
  gap: .4rem;
}
.also-for-option {
  display: inline-flex;
  align-items: center;
  gap: .35rem;
  padding: .3rem .65rem;
  border-radius: var(--r);
  border: 1px solid var(--border);
  background: var(--bg-3);
  cursor: pointer;
  font-size: .82rem;
  user-select: none;
  transition: border-color .15s, background .15s;
}
.also-for-option:has(input:checked) {
  border-color: var(--accent);
  background: rgba(108,126,247,.12);
}
.also-for-option input { display: none; }