:root{
  --bg:#12151a;--surface:#1c222a;--surface2:#242b35;--border:#2b3440;
  --text:#eef2f7;--dim:#8b9bb5;--teal:#2dd4bf;--red:#ff5265;
  --amber:#f59e0b;--green:#4ade80;--radius:16px;
}
*{box-sizing:border-box}
html,body{margin:0;min-height:100%;background:var(--bg);color:var(--text);font-family:Inter,Arial,sans-serif}
body{padding-bottom:90px}
button,input,select,textarea{font:inherit}
button{cursor:pointer}
.topbar{height:76px;padding:12px 28px;display:flex;align-items:center;justify-content:space-between;background:var(--bg)}
.topbar-brand{display:flex;align-items:center;gap:12px;font-size:26px;font-weight:800}
.brand-mark{width:20px;height:20px;border-radius:6px;background:var(--teal);box-shadow:0 0 0 5px rgba(45,212,191,.12)}
.topbar-actions{display:flex;gap:10px}
.icon-btn,.logout-btn{border:1px solid var(--border);background:var(--surface);color:var(--text);border-radius:14px;min-height:48px;padding:0 16px;font-weight:700}
.icon-btn{width:58px;font-size:20px}
.icon-btn.granted{color:var(--teal)}
.view{max-width:1040px;margin:0 auto;padding:22px 24px}
.page-title{font-size:32px;margin:0 0 6px}
.page-subtitle{margin:0 0 22px;color:var(--dim);font-size:17px}
.section{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:20px;margin:16px 0}
.section-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:14px}
.section-title{font-size:20px;font-weight:800}
.section-count{color:var(--dim)}
.empty{padding:28px;text-align:center;color:var(--dim)}
.error{padding:16px;background:rgba(255,82,101,.1);color:#fca5a5;border-radius:14px}
.card{display:flex;align-items:center;justify-content:space-between;gap:18px;padding:18px;border:1px solid var(--border);border-left:4px solid var(--teal);border-radius:16px;background:var(--surface2);margin:10px 0}
.card.status-red{border-left-color:var(--red)}
.card.status-amber{border-left-color:var(--amber)}
.card.status-green{border-left-color:var(--green)}
.card-main{min-width:0;flex:1}
.card-title{font-size:19px;font-weight:800}
.card-sub{margin-top:6px;color:var(--dim)}
.card-chip{padding:8px 12px;border-radius:999px;font-weight:800;white-space:nowrap}
.chip-red{background:rgba(255,82,101,.12);color:var(--red)}
.chip-amber{background:rgba(245,158,11,.12);color:var(--amber)}
.chip-green{background:rgba(74,222,128,.12);color:var(--green)}
.stats{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.stat-card{background:var(--surface);border:1px solid var(--border);border-radius:16px;padding:18px}
.stat-num{font-size:30px;font-weight:800}.stat-label{color:var(--dim);margin-top:4px}
.btn{border:1px solid var(--border);background:var(--surface2);color:var(--text);padding:13px 18px;border-radius:14px;font-weight:800}
.btn.primary{background:var(--teal);border-color:var(--teal);color:#071310}
.btn.danger{color:var(--red);background:rgba(255,82,101,.12)}
.btn:disabled{opacity:.5;cursor:not-allowed}
.field{margin:16px 0}
.field label{display:block;color:var(--dim);font-weight:800;font-size:14px;text-transform:uppercase;letter-spacing:.03em;margin-bottom:8px}
.field input,.field select,.field textarea{width:100%;background:var(--surface2);color:var(--text);border:1px solid var(--border);border-radius:14px;padding:14px 16px;outline:none}
.field textarea{min-height:110px;resize:vertical}
.field small{display:block;color:var(--dim);margin-top:7px}
.field input:disabled,.field select:disabled,.field textarea:disabled{opacity:.55}
.chip-row{display:flex;flex-wrap:wrap;gap:10px}
.chip-toggle{border:1px solid var(--teal);background:transparent;color:var(--teal);border-radius:999px;padding:10px 17px;font-weight:800}
.chip-toggle.on{background:rgba(45,212,191,.18)}
.filepick{display:flex;align-items:center;gap:12px;flex-wrap:wrap}
.filepick-name{flex:1;min-width:0;color:var(--dim);overflow:hidden;text-overflow:ellipsis}
.filepick-btn{border:1px solid var(--border);background:var(--surface2);color:var(--text);border-radius:11px;padding:10px 14px;font-weight:800}
.filepick input{display:none}
.modal-backdrop{position:fixed;inset:0;background:rgba(0,0,0,.76);display:flex;align-items:center;justify-content:center;padding:16px;z-index:100}
.modal-sheet{width:min(720px,100%);max-height:92vh;overflow:auto;background:var(--surface);border:1px solid var(--border);border-radius:18px;padding:22px}
.modal-title{font-size:24px;font-weight:800;margin-bottom:18px}
.modal-actions{display:flex;gap:12px;margin-top:20px}
.modal-actions .btn{flex:1}
.detail-row{display:flex;justify-content:space-between;gap:20px;padding:12px 0;border-bottom:1px solid var(--border)}
/* ---------- Bottom Navigation ---------- */

.bottomnav{
  position:fixed;
  left:0;
  right:0;
  bottom:0;
  height:78px;
  padding:6px 4px calc(6px + env(safe-area-inset-bottom));
  background:#1a2028;
  border-top:1px solid var(--border);
  display:grid;
  grid-template-columns:repeat(5,minmax(0,1fr));
  z-index:40;
}

.navbtn{
  min-width:0;
  width:100%;
  height:66px;
  padding:6px 2px;
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:4px;
  color:var(--dim);
  font-weight:800;
  font-size:11px;
  line-height:1.1;
  text-align:center;
  text-decoration:none;
  white-space:nowrap;
  overflow:hidden;
  border-radius:14px;
  transition:
    background .2s ease,
    color .2s ease;
}

.navbtn.active{
  color:var(--teal);
  background:rgba(45,212,191,.10);
}

.navbtn:active{
  background:rgba(45,212,191,.06);
}
.fab{position:fixed;right:24px;bottom:100px;width:78px;height:78px;border:0;border-radius:50%;background:var(--teal);color:#071310;font-size:42px;box-shadow:0 14px 32px rgba(45,212,191,.24);z-index:50}
.finance-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.finance-big{font-size:30px;font-weight:800;color:var(--teal)}
.summary-table{width:100%;border-collapse:collapse}
.summary-table td,.summary-table th{padding:12px;border-bottom:1px solid var(--border);text-align:left}
.summary-table td:last-child,.summary-table th:last-child{text-align:right}
.auth-page{max-width:420px;margin:70px auto;padding:24px}
.auth-logo{width:48px;height:48px;border-radius:14px;background:var(--teal);color:#071310;display:flex;align-items:center;justify-content:center;font-weight:900;font-size:24px;margin:0 auto 18px}
.auth-page h1{text-align:center;margin:0}.auth-subtitle{text-align:center;color:var(--dim);margin:8px 0 28px}
.auth-error{background:rgba(255,82,101,.12);color:#fca5a5;padding:12px;border-radius:12px;margin-bottom:15px}
.notice{padding:12px;border-radius:12px;background:rgba(45,212,191,.08);color:var(--dim)}
@media(max-width:700px){
  .topbar{padding:10px 16px}.topbar-brand{font-size:20px}.view{padding:16px 14px}.page-title{font-size:28px}
  .stats,.finance-grid{grid-template-columns:1fr}.card{align-items:flex-start}.card-chip{margin-left:auto}
  .modal-actions{flex-direction:column}.detail-row{flex-direction:column;gap:5px}
  .fab{right:18px;bottom:96px;width:72px;height:72px}
}
.password-field {
  position: relative;
  width: 100%;
}

.password-field input {
  width: 100%;
  padding-right: 48px;
}

.password-toggle {
  position: absolute;
  right: 10px;
  top: 50%;
  transform: translateY(-50%);
  width: 34px;
  height: 34px;
  padding: 0;
  border: 0;
  background: transparent;
  cursor: pointer;
  display: grid;
  place-items: center;
  font-size: 17px;
  opacity: 0.7;
}

.password-toggle:hover {
  opacity: 1;
}
/* Shared Expenses */

.shared-group-card,
.invitation-card,
.expense-row,
.member-row,
.balance-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 16px;
  margin: 10px 0;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: var(--surface2);
}

.shared-actions {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.shared-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 16px;
  margin-bottom: 18px;
}

.shared-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
  margin-bottom: 16px;
}

.expense-amount {
  font-size: 18px;
  font-weight: 800;
  white-space: nowrap;
}

.balance-positive {
  color: var(--green);
}

.balance-negative {
  color: var(--red);
}

.custom-split-row {
  margin: 10px 0;
}

.shared-notice {
  margin: 12px 0;
}

.shared-bottomnav {
  grid-template-columns: repeat(5, 1fr);
}

@media (max-width: 700px) {
  .shared-header {
    flex-direction: column;
  }

  .shared-stats {
    grid-template-columns: 1fr;
  }

  .shared-group-card,
  .invitation-card,
  .expense-row,
  .member-row,
  .balance-row {
    align-items: flex-start;
  }

  .shared-bottomnav .navbtn {
    font-size: 11px;
  }
}