:root{
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  color:#172033;background:#f4f6f9;
  --primary:#2563eb;--primary-dark:#1d4ed8;--border:#e2e6ed;
  --muted:#687386;--card:#fff;--success:#e8f7ee;--danger:#fdecec;--warning:#fff7df;
}
*{box-sizing:border-box}
body{margin:0;line-height:1.45}
.topbar{height:64px;background:#fff;border-bottom:1px solid var(--border);display:flex;align-items:center;justify-content:space-between;padding:0 max(18px,calc((100vw - 1120px)/2))}
.brand{font-weight:800;color:#172033;text-decoration:none;font-size:18px}
.container{max-width:1120px;margin:0 auto;padding:32px 18px 72px}
.hero{padding:34px 0 26px}.hero h1{font-size:44px;line-height:1.1;margin:0 0 12px}.hero p{font-size:19px;color:var(--muted);max-width:720px}
h1{margin:0 0 10px}h2{margin:0 0 16px}h3{margin:0 0 8px}
.card{background:var(--card);border:1px solid var(--border);border-radius:14px;padding:22px;margin:18px 0;box-shadow:0 2px 8px rgba(20,30,50,.03)}
.cards{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}.cards .card{margin:0}
.button{display:inline-flex;align-items:center;justify-content:center;border:0;border-radius:9px;background:var(--primary);color:#fff;padding:10px 16px;text-decoration:none;cursor:pointer;font-size:15px;font-weight:650;transition:.15s}
.button:hover{background:var(--primary-dark)}.button.secondary{background:#eef2f7;color:#243044}.button.small{padding:7px 11px;font-size:13px}
.form label{display:block;margin:15px 0;font-weight:650}
input,select,textarea{display:block;width:100%;margin-top:7px;padding:10px 11px;border:1px solid #cbd2dc;border-radius:8px;font:inherit;background:#fff;color:#172033}
input:focus,select:focus,textarea:focus{outline:2px solid #bfdbfe;border-color:var(--primary)}
.option-row{display:grid;grid-template-columns:minmax(150px,1fr) minmax(240px,1fr) auto;gap:10px;align-items:end;margin:10px 0}
.option-row .time-fields{display:grid;grid-template-columns:1fr auto 1fr;gap:7px;align-items:center}.remove{border:0;background:transparent;cursor:pointer;font-size:20px;padding:8px}.hidden{display:none!important}
.hotel-settings{border-top:1px solid var(--border);margin-top:25px;padding-top:10px}
.success{padding:12px 15px;border-radius:9px;background:var(--success);margin:15px 0;color:#175b32}
.notice{padding:12px 15px;border-radius:9px;background:var(--warning);margin:15px 0}
.muted{color:var(--muted);font-size:14px}.lead{color:var(--muted);font-size:18px}
.link-box{display:grid;grid-template-columns:auto 1fr auto;gap:12px;align-items:center;background:#fff;border:1px solid var(--border);border-radius:12px;padding:14px;margin:18px 0}
.link-box input{margin:0;font-size:13px}
.summary-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin:18px 0}.stat{background:#fff;border:1px solid var(--border);border-radius:12px;padding:17px}.stat span{display:block;color:var(--muted);font-size:13px}.stat strong{display:block;font-size:25px;margin-top:3px}
.inline-form{display:grid;grid-template-columns:1fr 1fr auto;gap:12px;align-items:end}.inline-form label{margin:0}
.table-wrap{overflow-x:auto;border:1px solid var(--border);border-radius:10px}
table{width:100%;border-collapse:collapse;min-width:650px;background:#fff}th,td{padding:11px 12px;border-bottom:1px solid #edf0f4;text-align:left;white-space:nowrap}th{background:#f8fafc;font-size:13px;color:#566174;position:sticky;top:0}tr:last-child td{border-bottom:0}
.answer{text-align:center;font-size:18px;font-weight:700}.answer.yes,.answer.selected{color:#138a4b}.answer.maybe{color:#b77900}.answer.no{color:#c43b3b}
.participant-option{border:1px solid var(--border);border-radius:12px;padding:15px;margin:10px 0;background:#fff}
.checkline{display:flex!important;gap:12px;align-items:center;margin:0!important;cursor:pointer}.checkline input{width:20px;height:20px;margin:0}.checkline strong{font-size:16px}.checkline span{color:var(--muted)}
.slot-title{display:flex;justify-content:space-between;gap:15px}.slot-time{color:var(--muted)}
.choices{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;margin-top:12px}.choice{border:1px solid var(--border);border-radius:9px;padding:9px;text-align:center;cursor:pointer}.choice input{width:auto;display:inline;margin:0 5px 0 0}.choice:hover{background:#f8fafc}
.calendar{display:grid;grid-template-columns:repeat(7,1fr);gap:7px}.day{border:1px solid var(--border);border-radius:10px;min-height:88px;padding:8px;background:#fff}.day.selected{border-color:var(--primary);background:#eff6ff}.day .dow{font-size:11px;color:var(--muted);text-transform:uppercase}.day .date{font-weight:750}.day label{display:block;margin:6px 0 0;font-size:12px}.day input{width:18px;height:18px;margin:0 4px 0 0;display:inline;vertical-align:middle}
.section-head{display:flex;align-items:center;justify-content:space-between;gap:15px;margin-bottom:12px}
.person-costs td:last-child,.person-costs th:last-child{text-align:right}
.actions{display:flex;gap:8px;flex-wrap:wrap}
@media(max-width:800px){.summary-grid{grid-template-columns:repeat(2,1fr)}.cards{grid-template-columns:1fr}.option-row{grid-template-columns:1fr auto}.option-row .time-fields{grid-column:1/-1}.inline-form{grid-template-columns:1fr}.calendar{grid-template-columns:repeat(4,1fr)}}
@media(max-width:520px){.container{padding-top:22px}.hero h1{font-size:34px}.summary-grid{grid-template-columns:1fr 1fr}.link-box{grid-template-columns:1fr}.choices{grid-template-columns:1fr}.calendar{grid-template-columns:repeat(2,1fr)}}


.topbar-actions, .hero-actions { display: flex; gap: 0.6rem; align-items: center; flex-wrap: wrap; }
.button.small { padding: 0.45rem 0.7rem; font-size: 0.9rem; }
.button.danger { background: #b42318; color: white; border-color: #b42318; }
.button.danger:hover { background: #8f1c13; border-color: #8f1c13; }
.hero .section-head { align-items: flex-start; }
@media (max-width: 700px) { .topbar-actions { width: 100%; justify-content: flex-end; } .hero-actions { width: 100%; } }

.date-range{display:grid;grid-template-columns:1fr auto 1fr;gap:12px;align-items:end;max-width:760px}
.date-range label{margin:10px 0}.date-arrow{padding-bottom:12px;color:var(--muted);font-size:22px}.hotel-settings p{margin-top:-6px}
@media(max-width:600px){.date-range{grid-template-columns:1fr}.date-arrow{display:none}}

.participant-name{cursor:help}




/* v15: app version */
.app-version{font-size:.72rem;font-weight:650;color:#94a3b8;margin-left:.45rem;vertical-align:middle}

/* v15: hotel result matrix - people as rows, nights as columns */
.matrix-wrap{overflow-x:auto;max-width:100%}
.hotel-matrix{min-width:max-content}
.hotel-matrix th,.hotel-matrix td{min-width:88px;text-align:center}
.hotel-matrix .sticky-corner,.hotel-matrix .sticky-person{
  position:sticky;left:0;z-index:3;text-align:left;min-width:160px;
  background:#f8fafc;box-shadow:2px 0 4px rgba(20,30,50,.06)
}
.hotel-matrix .sticky-corner{top:0;z-index:5}
.hotel-matrix .hotel-date-header{top:0;z-index:4;background:#f8fafc;white-space:nowrap}
.hotel-matrix .matrix-summary th,.hotel-matrix .matrix-summary td{background:#f8fafc;font-weight:700}

/* v15: Monday-first hotel date range calendar */
.date-range-fields{display:grid;grid-template-columns:1fr auto 1fr;gap:12px;align-items:end;max-width:760px}
.date-range-fields label{margin:10px 0}
.date-arrow{padding-bottom:12px;color:var(--muted);font-size:22px}
.calendar-picker{margin-top:14px;max-width:760px}
.card-lite{border:1px solid var(--border);border-radius:12px;padding:14px;background:#fff}
.calendar-toolbar{display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:12px;margin-bottom:12px}
.calendar-toolbar strong{text-align:center;text-transform:capitalize}
.calendar-weekdays,.calendar-grid{display:grid;grid-template-columns:repeat(7,1fr);gap:5px}
.calendar-weekdays span{text-align:center;font-size:12px;font-weight:700;color:var(--muted);padding:5px 0}
.calendar-day{min-height:42px;border:1px solid transparent;border-radius:8px;background:#fff;cursor:pointer;font:inherit}
.calendar-day:hover{border-color:#93c5fd;background:#eff6ff}
.calendar-day.empty{visibility:hidden;pointer-events:none}
.calendar-day.range-start,.calendar-day.range-end{background:var(--primary);color:#fff;font-weight:700}
.calendar-day.in-range{background:#dbeafe;border-color:#bfdbfe}
.calendar-help{margin-top:10px}

/* v15: read-only participant results */
.read-only-results table{min-width:760px}
.read-only-results th,.read-only-results td{text-align:center}
.read-only-results th:first-child,.read-only-results td:first-child{text-align:left}
.participant-result-name{min-width:150px}

@media(max-width:700px){
  .hotel-matrix th,.hotel-matrix td{min-width:72px}
  .hotel-matrix .sticky-corner,.hotel-matrix .sticky-person{min-width:140px}
  .date-range-fields{grid-template-columns:1fr}
  .date-arrow{display:none}
}

/* v17: custom ISO date picker for dinner/availability and ISO hotel date fields */
.date-picker-field{margin-top:7px}
.date-picker-button{display:flex;align-items:center;justify-content:space-between;width:100%;min-height:43px;padding:10px 11px;border:1px solid #cbd2dc;border-radius:8px;background:#fff;color:#687386;font:inherit;text-align:left;cursor:pointer}
.date-picker-button.has-value{color:#172033}
.date-picker-button:hover{border-color:#93c5fd;background:#f8fbff}
.date-picker-button:focus{outline:2px solid #bfdbfe;border-color:var(--primary)}
#availability-calendar-picker{margin-top:14px;max-width:760px}

/* v18: saved/locked participant choices and summaries */
.saved-badge{display:inline-flex;align-items:center;padding:5px 9px;border-radius:999px;background:#e8f7ee;color:#175b32;font-size:13px;font-weight:700;white-space:nowrap}
.saved-summary{background:#e8f7ee;border-color:#b7dfc6}
.locked-option{background:#f3f4f6!important;border-color:#d6d9dd!important;color:#6b7280;box-shadow:none}
.locked-option.selected{background:#e8f7ee!important;border-color:#8fd0a5!important}
.locked-option.unselected,.day.locked-option:not(.selected){background:#f3f4f6!important;border-color:#d6d9dd!important;color:#6b7280!important;box-shadow:none!important}
.selected-mark{color:#138a4b;font-weight:750;font-size:13px;margin-top:6px}
.has-answer .selected-choice{background:#d9f2e2;border-color:#8fd0a5;color:#175b32;font-weight:750}
.mine-card{display:flex;flex-direction:column}
.mine-card .mine-summary{margin-top:4px}
.mine-card .mine-summary h3{font-size:17px;margin-bottom:10px}
.mine-card .mine-actions{display:flex;gap:8px;flex-wrap:wrap;margin-top:auto;padding-top:18px}
.mine-card .calendar{margin-top:8px}
.mine-card .participant-option{margin:8px 0}
.form-locked input:disabled{background:#f4f6f9;color:#687386;cursor:not-allowed}
.bottom-actions{margin-top:18px}
.read-only-results .hotel-matrix{min-width:max-content}
@media(max-width:700px){.mine-card .section-head{align-items:flex-start;flex-direction:column}.saved-badge{align-self:flex-start}}

/* v19: availability uses only yes/no */
.mine-result-table{min-width:760px}
.mine-result-table th,.mine-result-table td{text-align:center}
.mine-result-table th:first-child,.mine-result-table td:first-child{text-align:left}
.choices{grid-template-columns:repeat(2,1fr)}

/* v21: hotel poll editing/locking */
.lock-notice{margin:14px 0;padding:14px 16px;border-radius:10px;background:#fff4e5;border:1px solid #f2c078;color:#7a4b00}
.disabled-button{cursor:default;opacity:.82;pointer-events:none;text-align:center}
.participant-summary-grid{margin-top:18px}
.result-cost-summary{margin-top:10px;padding:10px 12px;border-radius:8px;background:#f8fafc;border:1px solid var(--border)}