:root{--bg:#f4f7fb;--card:#fff;--text:#172033;--muted:#687386;--line:#e4e9f0;--brand:#2563eb;--brand2:#1d4ed8;--good:#15803d;--bad:#b91c1c;--warn:#b45309;--shadow:0 8px 26px rgba(15,23,42,.07)}
*{box-sizing:border-box}body{margin:0;font-family:Inter,"Noto Sans TC","Microsoft JhengHei",system-ui,sans-serif;background:var(--bg);color:var(--text)}a{color:inherit}
.container{max-width:1180px;margin:auto;padding:22px}.topbar{display:flex;justify-content:space-between;align-items:flex-start;gap:16px;margin-bottom:18px}.brand h1{margin:0;font-size:28px}.brand p{margin:5px 0 0;color:var(--muted)}.actions{display:flex;gap:8px;flex-wrap:wrap}
button,.btn{border:0;border-radius:10px;padding:10px 14px;font-weight:750;cursor:pointer;text-decoration:none;display:inline-flex;align-items:center;justify-content:center}.primary{background:var(--brand);color:white}.primary:hover{background:var(--brand2)}.secondary{background:#eaf0ff;color:#1d4ed8}.ghost{background:#edf1f6;color:#334155}.danger{background:#fee2e2;color:#991b1b}
.card{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:18px;box-shadow:var(--shadow)}.grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}.full{grid-column:1/-1}.trip-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}.trip-card{background:white;border:1px solid var(--line);border-radius:15px;padding:16px;box-shadow:var(--shadow)}.trip-card h3{margin:0 0 8px}.meta{font-size:13px;color:var(--muted);display:flex;gap:12px;flex-wrap:wrap}.trip-bottom{display:flex;justify-content:space-between;align-items:end;margin-top:16px;gap:12px}.money{font-size:22px;font-weight:850}.badge{font-size:12px;padding:5px 8px;border-radius:999px;background:#eef2ff;color:#3730a3;font-weight:750}.badge.archived{background:#f1f5f9;color:#64748b}.badge.ended{background:#fff7ed;color:#9a3412}
.kpis{display:grid;grid-template-columns:repeat(5,1fr);gap:12px;margin:14px 0}.kpi{background:white;border:1px solid var(--line);border-radius:14px;padding:15px}.kpi .l{font-size:12px;color:var(--muted)}.kpi .v{font-size:23px;font-weight:850;margin-top:6px}
h2{font-size:18px;margin:0 0 14px}.section-title{display:flex;justify-content:space-between;align-items:center;gap:12px;margin-bottom:12px}.row{display:grid;grid-template-columns:1fr 1fr;gap:12px}.field{margin-bottom:12px}label{display:block;font-size:13px;font-weight:750;color:#475569;margin-bottom:6px}input,select,textarea{width:100%;padding:10px 12px;border:1px solid #cbd5e1;border-radius:9px;font:inherit;background:white}
.members{display:flex;flex-wrap:wrap;gap:8px}.pill{display:flex;gap:7px;align-items:center;background:#eff6ff;color:#1d4ed8;border:1px solid #bfdbfe;border-radius:999px;padding:7px 10px}.pill button{padding:0;background:transparent;color:#64748b}.split-list{display:grid;gap:8px}.split-item{display:grid;grid-template-columns:28px 1fr 130px;gap:8px;align-items:center}
table{width:100%;border-collapse:collapse}th,td{padding:10px 8px;border-bottom:1px solid var(--line);font-size:14px;text-align:left;vertical-align:top}th{font-size:12px;color:#64748b}.right{text-align:right}.good{color:var(--good);font-weight:800}.bad{color:var(--bad);font-weight:800}.muted{color:var(--muted)}.small{font-size:12px}.settlement{display:flex;justify-content:space-between;border-bottom:1px solid var(--line);padding:11px 0}.settlement:last-child{border-bottom:0}
.log-list{display:grid;gap:8px;max-height:400px;overflow:auto}.log-item{display:grid;grid-template-columns:155px 110px 100px 1fr 78px;gap:10px;border:1px solid var(--line);border-radius:10px;padding:10px;background:#fafafa}.empty{color:var(--muted);padding:12px 0}.notice{padding:12px 14px;border-radius:10px;background:#fff7ed;color:#9a3412;margin-bottom:14px}.admin-grid{display:grid;grid-template-columns:repeat(6,1fr);gap:12px}.admin-kpi{background:white;border:1px solid var(--line);border-radius:12px;padding:14px}.admin-kpi b{font-size:22px}.login{max-width:420px;margin:10vh auto}.hidden{display:none!important}.actor-box{display:flex;align-items:center;gap:7px}.actor-box input{width:130px;padding:8px 10px}
@media(max-width:850px){.grid,.row,.trip-grid,.kpis,.admin-grid{grid-template-columns:1fr}.topbar{flex-direction:column}.split-item{grid-template-columns:28px 1fr 95px}.log-item{grid-template-columns:1fr}.full{grid-column:auto}.actor-box input{width:150px}}

button:disabled,.btn:disabled{opacity:.45;cursor:not-allowed;filter:grayscale(.25)}

/* V4.3 collapsible sections */
.collapsible{padding:0;overflow:hidden}
.collapsible summary{
  list-style:none;
  cursor:pointer;
  padding:18px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  font-size:18px;
  font-weight:800;
  user-select:none;
}
.collapsible summary::-webkit-details-marker{display:none}
.collapsible summary::after{
  content:"＋";
  flex:0 0 auto;
  font-size:22px;
  color:var(--muted);
  line-height:1;
}
.collapsible[open] summary::after{content:"－"}
.collapsible[open] summary{border-bottom:1px solid var(--line)}
.collapsible-body{padding:18px}
.summary-hint{font-size:12px;font-weight:600;color:var(--muted);margin-left:auto}
.summary-preview{font-size:12px;font-weight:650;color:var(--muted);margin-left:auto;text-align:right}
.compact-kpis{margin:0}
@media(max-width:850px){
  .summary-preview{max-width:58%;white-space:normal}
  .collapsible summary{padding:16px}
  .collapsible-body{padding:16px}
}

/* V4.7 多付款人 + 多幣別 */
.amount-currency{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,2fr);gap:8px}
.payer-box{border:1px solid var(--line);border-radius:12px;padding:12px;background:#f8fafc}
.payer-pay-row{display:grid;grid-template-columns:1fr 140px;gap:8px;align-items:center;margin-bottom:8px}
.payment-summary{display:flex;justify-content:space-between;gap:12px;padding:9px 10px;border-radius:9px;background:white;border:1px solid var(--line);font-size:13px}
.rate-panel{}
.rate-row{display:grid;grid-template-columns:minmax(120px,1fr) 150px auto;gap:8px;align-items:center;padding:8px 0;border-bottom:1px dashed var(--line)}
.rate-row:last-child{border-bottom:0}
.currency-admin-row{display:grid;grid-template-columns:110px 1fr 110px 130px auto;gap:8px;align-items:center}
@media(max-width:850px){.amount-currency{grid-template-columns:minmax(0,1fr) minmax(0,2fr)}.payer-pay-row{grid-template-columns:1fr 105px}.rate-row{grid-template-columns:1fr 110px}.rate-row button{grid-column:1/-1}.currency-admin-row{grid-template-columns:1fr 1fr}.currency-admin-row button{grid-column:1/-1}}

/* V4.8 basic settings */
.basic-section + .basic-section{
  margin-top:20px;
  padding-top:18px;
  border-top:1px solid var(--line);
}
.basic-section h3{
  margin:0 0 12px;
}

/* V4.9 archive/read-only polish */
.rate-readonly{grid-template-columns:minmax(120px,1fr) 150px}
.readonly-value{padding:10px 12px;border:1px solid var(--line);border-radius:9px;background:#f8fafc;text-align:right;font-weight:750}
@media(max-width:850px){.rate-readonly{grid-template-columns:1fr 110px}.trip-card .trip-bottom{align-items:center}}

/* V4.11 支出金額與幣別等寬 */
.amount-currency > input,
.amount-currency > select{
  width:100%;
  min-width:0;
}

/* V4.12 旅程標頭版面 */
.trip-head{
  min-width:0;
}
.trip-name{
  margin:0 0 8px;
  font-size:22px;
  white-space:nowrap;
  overflow:hidden;
  text-overflow:ellipsis;
  max-width:100%;
}
.trip-status{
  margin-bottom:12px;
}
.trip-head-actions{
  display:flex;
  gap:8px;
  flex-wrap:wrap;
  align-items:center;
}
@media(max-width:850px){
  .trip-head-actions{
    display:grid;
    grid-template-columns:1fr 1fr;
    width:100%;
  }
  .trip-head-actions > button,
  .trip-head-actions > .btn{
    width:100%;
    min-width:0;
  }
}

/* V4.13 管理後台批量刪除旅程 */
.bulk-trip-toolbar{
  display:flex;
  align-items:center;
  gap:12px;
  flex-wrap:wrap;
  padding:12px;
  margin-bottom:12px;
  border:1px solid var(--line);
  border-radius:12px;
  background:#f8fafc;
}
.bulk-select-all{
  display:inline-flex;
  align-items:center;
  gap:7px;
  margin:0;
  color:#334155;
  font-size:14px;
}
.bulk-select-all input,
.bulk-check-cell input{
  width:18px;
  height:18px;
  margin:0;
}
.bulk-check-cell{
  width:36px;
  text-align:center;
  vertical-align:middle;
}
#bulkSelectedCount{
  margin-right:auto;
}
@media(max-width:850px){
  .bulk-trip-toolbar{
    display:grid;
    grid-template-columns:auto 1fr;
  }
  #bulkSelectedCount{
    margin-right:0;
    text-align:right;
  }
  #bulkDeleteTrips{
    grid-column:1/-1;
    width:100%;
  }
}

/* V4.16 參與結算單位：三人並排 */
.split-list{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:10px;
}
.split-item{
  display:grid;
  grid-template-columns:24px minmax(0,1fr);
  gap:6px 8px;
  align-items:start;
  min-width:0;
  padding:8px;
  border:1px solid var(--line);
  border-radius:10px;
  background:#fff;
}
.split-item > input.pchk{
  width:20px;
  height:20px;
  margin:1px 0 0;
}
.split-item > div{
  min-width:0;
  line-height:1.25;
  word-break:keep-all;
}
.split-item > input.custom{
  grid-column:1/-1;
  width:100%;
  min-width:0;
}
@media(max-width:850px){
  .split-list{
    grid-template-columns:repeat(3,minmax(0,1fr));
    gap:8px;
  }
  .split-item{
    padding:7px 6px;
    grid-template-columns:20px minmax(0,1fr);
    gap:5px 5px;
  }
  .split-item > input.pchk{
    width:18px;
    height:18px;
  }
}

/* V4.17 多付款人與計算幣別 */
.currency-calc-toggle{
  display:inline-flex;
  align-items:center;
  gap:8px;
  margin:9px 0 0;
  font-size:14px;
  color:#334155;
  cursor:pointer;
}
.currency-calc-toggle input{
  width:18px;
  height:18px;
  margin:0;
}
.payer-rows{
  display:grid;
  gap:8px;
  margin-bottom:8px;
}
.dynamic-payer-row{
  grid-template-columns:minmax(0,1fr) minmax(0,140px) 42px;
}
.dynamic-payer-row:first-child:last-child{
  grid-template-columns:minmax(0,1fr);
}
.dynamic-payer-row .remove-payer{
  padding:8px 10px;
  min-width:42px;
}
@media(max-width:850px){
  .dynamic-payer-row{
    grid-template-columns:minmax(0,1fr) minmax(0,105px) 38px;
  }
  .dynamic-payer-row .remove-payer{
    min-width:38px;
    padding:8px;
  }
}

/* V4.19 多幣別餘額與建議結算 */
.currency-balance-group + .currency-balance-group,
.currency-settlement-group + .currency-settlement-group{
  margin-top:18px;
  padding-top:16px;
  border-top:1px solid var(--line);
}
.currency-balance-group h3,
.currency-settlement-group h3{
  margin:0 0 10px;
  font-size:15px;
}

/* ===== DinoPay V5 Preview shell ===== */
.cover-hero{position:relative;height:310px;border-radius:24px;overflow:hidden;background:#0f172a;box-shadow:var(--shadow)}
.cover-preview{position:absolute;inset:0;width:100%;height:100%;border:0;pointer-events:none;background:white}
.cover-shade{position:absolute;inset:0;background:linear-gradient(90deg,rgba(15,23,42,.86),rgba(15,23,42,.25) 62%,rgba(15,23,42,.08))}
.cover-content{position:absolute;left:28px;bottom:28px;right:28px;color:white;z-index:2}
.cover-content h2{font-size:34px;margin:7px 0 18px;color:white;text-shadow:0 2px 14px rgba(0,0,0,.35)}
.cover-kicker{display:inline-block;padding:5px 10px;border:1px solid rgba(255,255,255,.35);background:rgba(255,255,255,.12);backdrop-filter:blur(8px);border-radius:999px;font-size:13px}
.cover-actions{display:flex;gap:10px;flex-wrap:wrap}
.glass-btn{background:rgba(255,255,255,.18)!important;color:white!important;border:1px solid rgba(255,255,255,.3)!important;backdrop-filter:blur(10px)}
.cover-empty{min-height:220px;display:grid;place-items:center;text-align:center}
.cover-empty-icon{font-size:52px}
.upload-card{border:1px solid #dbeafe;background:linear-gradient(180deg,#fff,#f8fbff)}
.cover-checkbox{display:flex;align-items:center;gap:9px;margin:4px 0 14px;font-weight:650}
.cover-checkbox input{width:18px;height:18px}
.v5-trip-card{position:relative}
.v5-trip-card.is-cover{box-shadow:0 0 0 2px rgba(37,99,235,.2),var(--shadow)}
.v5-card-actions{display:flex;gap:8px;flex-wrap:wrap;margin-top:14px}
.v5-card-actions>*{flex:1 1 130px}
body.embedded{background:#f4f7fb}
body.embedded .container{max-width:none;padding:10px}
body.embedded .brand,body.embedded #copyUrl,body.embedded #adminLink,body.embedded .topbar>a{display:none!important}
body.embedded .topbar{position:sticky;top:0;z-index:20;margin:0 0 8px;padding:8px 10px;border-radius:14px;background:rgba(255,255,255,.92);backdrop-filter:blur(14px)}
body.embedded .topbar .actions{width:100%;justify-content:flex-start}
body.embedded .actor-box{width:100%;display:grid;grid-template-columns:auto minmax(120px,1fr);align-items:center;gap:8px}
body.embedded .actor-box input{width:100%}
body.embedded .trip-head-card{display:none}
body.embedded .grid{grid-template-columns:1fr}
@media(max-width:850px){
  .cover-hero{height:250px;border-radius:18px}
  .cover-content{left:18px;right:18px;bottom:18px}
  .cover-content h2{font-size:28px}
  .cover-shade{background:linear-gradient(0deg,rgba(15,23,42,.9),rgba(15,23,42,.12) 75%)}
  .v5-card-actions>*{flex:1 1 calc(50% - 8px)}
}

/* V5.0.2 independent cover photos */
.cover-photo{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.cover-placeholder{position:absolute;inset:0;display:grid;place-items:center;font-size:88px;background:linear-gradient(135deg,#0f172a,#1e3a8a);color:white}
.trip-cover-thumb{width:100%;height:150px;object-fit:cover;border-radius:14px;margin-bottom:12px;border:1px solid var(--line)}
@media(max-width:850px){.trip-cover-thumb{height:120px}}