:root{
    --sand:#FFF6EC; --card:#FFFFFF;
    --coral:#FF6F59; --coral-deep:#E8543F;
    --ocean:#1AA6A0; --ocean-deep:#0E7D78;
    --gold:#FFB84D; --pink:#FF8FA3; --purple:#8C7AE6;
    --ink:#3A2E27; --muted:#9C8B7C; --muted-2:#B9A99A;
    --line:#F2E1CB; --shadow: 0 6px 18px rgba(154,101,60,0.12);
    --shadow-lg: 0 12px 30px rgba(154,101,60,0.18);
    --input-bg:#FFFBF5; --chip-bg:#FFF9F0; --surface:#FFFFFF;
  }
  body.theme-dark{
    --sand:#1A2230; --card:#232D3E; --ink:#F2E9DC; --muted:#93A2B5; --muted-2:#5F7086;
    --line:#324259; --shadow:0 6px 18px rgba(0,0,0,0.35); --shadow-lg:0 12px 30px rgba(0,0,0,0.5);
    --input-bg:#2A3547; --chip-bg:#2A3547; --surface:#232D3E;
  }
  body.theme-vacay{
    --sand:#FFEFD6; --input-bg:#FFF3DC; --chip-bg:#FFEAC2; --surface:#FFFDF7;
    background: linear-gradient(180deg, #FFE7B8 0%, #FFC98E 35%, #FF9F70 70%, #FF7F8A 100%) fixed;
  }
  #app{position:relative;z-index:1;}
  .vacay-decor{position:fixed;inset:0;pointer-events:none;z-index:0;overflow:hidden;}
  .vacay-decor .vd{position:absolute;top:0;left:0;opacity:0;will-change:transform,opacity;}
  .vacay-decor .vd-emoji{font-size:48px;}
  .vacay-decor .vd-photo{width:96px;}
  .vacay-decor .polaroid{background:#fff;padding:7px 7px 16px;border-radius:8px;box-shadow:0 12px 28px rgba(0,0,0,0.28);width:100%;}
  .vacay-decor .polaroid img{width:100%;height:auto;aspect-ratio:1/1;object-fit:cover;border-radius:3px;display:block;}
  .theme-toggle{display:flex;gap:2px;background:var(--surface);border-radius:16px;padding:3px;box-shadow:var(--shadow);}
  .theme-opt{width:30px;height:30px;border-radius:13px;display:flex;align-items:center;justify-content:center;cursor:pointer;font-size:14px;background:none;}
  .theme-opt.on{background:var(--coral);}
  .profile-quick{position:relative;cursor:pointer;transition:transform .15s;}
  .profile-quick:hover{transform:scale(1.1);}
  .profile-quick:hover .avatar{box-shadow:0 0 0 3px #fff, 0 0 14px 3px rgba(255,111,89,0.55);}
  .profile-quick .quick-overlay{position:absolute;inset:0;border-radius:50%;background:rgba(0,0,0,0.5);color:#fff;font-size:8px;font-weight:800;display:flex;align-items:center;justify-content:center;text-align:center;line-height:1.1;opacity:0;transition:opacity .15s;}
  .profile-quick:hover .quick-overlay{opacity:1;}
  .vibes-card{background:linear-gradient(120deg,#FFEFD6,#FFD9B3);border-radius:20px;padding:18px 20px;margin:0 24px 16px;box-shadow:var(--shadow);}
  .vibes-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(120px,1fr));gap:12px;margin-top:12px;}
  .vibes-item{background:rgba(255,255,255,0.6);border-radius:14px;padding:10px 12px;text-align:center;}
  .vibes-item .v-num{font-family:'Fredoka',sans-serif;font-size:16px;color:var(--coral-deep);font-weight:600;}
  .vibes-item .v-lbl{font-size:10px;color:var(--muted);font-weight:800;margin-top:2px;}
  *{box-sizing:border-box;}
  body{margin:0;background:var(--sand);color:var(--ink);font-family:'Nunito',sans-serif;min-height:100vh;}
  .display{font-family:'Fredoka',sans-serif;}
  .mono{font-family:'IBM Plex Mono',monospace;}
  .eyebrow{text-transform:uppercase;letter-spacing:0.1em;font-size:11px;color:var(--muted);font-weight:800;}
  #app{max-width:880px;margin:0 auto;padding:0 0 5rem;}
  a{color:var(--ocean-deep);}
  ::selection{background:var(--gold);color:var(--ink);}

  .navbar{display:flex;justify-content:space-between;align-items:center;padding:16px 24px;background:var(--sand);position:sticky;top:0;z-index:20;}
  .brand{display:flex;align-items:center;gap:8px;font-family:'Fredoka',sans-serif;font-weight:600;font-size:19px;color:var(--coral-deep);cursor:pointer;}
  .nav-pills{display:flex;gap:2px;background:var(--surface);border-radius:20px;padding:4px;box-shadow:var(--shadow);}
  .nav-pill{border:none;background:none;padding:8px 16px;border-radius:16px;font-weight:800;font-size:13px;color:var(--muted);cursor:pointer;transition:all .15s;}
  .nav-pill:hover{color:var(--coral-deep);}
  .nav-pill.active{background:var(--coral);color:#fff;}
  .nav-right{display:flex;align-items:center;gap:14px;position:relative;}
  .bell-wrap{position:relative;cursor:pointer;font-size:20px;}
  .bell-badge{position:absolute;top:-4px;right:-6px;background:var(--coral);color:#fff;font-size:10px;font-weight:800;border-radius:8px;padding:1px 5px;min-width:14px;text-align:center;}
  .notif-panel{position:absolute;top:38px;right:0;width:290px;background:var(--surface);border-radius:16px;box-shadow:var(--shadow-lg);padding:10px;z-index:30;max-height:340px;overflow-y:auto;}
  .notif-item{padding:9px 8px;border-bottom:1px solid var(--line);font-size:13px;}
  .notif-item:last-child{border-bottom:none;}
  .notif-item .t{color:var(--muted);font-size:11px;margin-top:2px;}
  .notif-item.unread{background:#FFF6EC;border-radius:10px;}
  .notif-actions{display:flex;gap:8px;margin-top:8px;}
  .notif-actions button.tiny{padding:5px 12px;}

  .avatar-menu-wrap{position:relative;}
  .dropdown{position:absolute;top:44px;right:0;background:var(--surface);border-radius:16px;box-shadow:var(--shadow-lg);padding:8px;width:180px;z-index:30;}
  .dropdown-item{padding:10px 12px;border-radius:10px;cursor:pointer;font-size:13.5px;font-weight:700;color:var(--ink);}
  .dropdown-item:hover{background:#FFF0EB;}
  .dropdown-item.danger{color:var(--coral-deep);}

  .avatar{border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:800;color:#fff;flex-shrink:0;overflow:hidden;background:linear-gradient(135deg,var(--coral),var(--pink));font-family:'Nunito',sans-serif;}
  .avatar img{width:100%;height:100%;object-fit:cover;}
  .avatar.sm{width:30px;height:30px;font-size:12px;}
  .avatar.md{width:42px;height:42px;font-size:15px;}
  .avatar.lg{width:96px;height:96px;font-size:34px;}
  .avatar-stack{display:flex;}
  .avatar-stack .avatar{margin-left:-10px;border:2.5px solid var(--card);}
  .avatar-stack .avatar:first-child{margin-left:0;}

  button{font-family:'Nunito',sans-serif;}
  button.primary{background:var(--coral);border:none;color:#fff;padding:12px 20px;border-radius:16px;font-size:14.5px;font-weight:800;cursor:pointer;box-shadow:0 4px 0 var(--coral-deep);transition:transform .08s;}
  button.primary:active{transform:translateY(3px);box-shadow:none;}
  button.primary.block{width:100%;margin-top:18px;}
  button.ghost{background:var(--surface);border:2px solid var(--coral);color:var(--coral-deep);padding:9px 16px;border-radius:14px;cursor:pointer;font-size:13.5px;font-weight:700;}
  button.ghost:hover{background:#FFF0EB;}
  button.tiny{background:var(--surface);border:2px solid var(--line);color:var(--muted);padding:6px 12px;border-radius:12px;cursor:pointer;font-size:12px;font-weight:700;}
  button.tiny.accept{border-color:var(--ocean);color:var(--ocean-deep);}
  button.tiny.decline{border-color:var(--pink);color:#C9445C;}
  .linkbtn{background:none;border:none;color:var(--muted);cursor:pointer;font-size:13px;font-weight:700;}

  .section{padding:18px 24px;}
  .section h2{font-family:'Fredoka',sans-serif;font-size:18px;margin:0 0 12px;color:var(--ink);font-weight:600;}
  .card{background:var(--card);border-radius:20px;padding:20px 22px;margin-bottom:14px;box-shadow:var(--shadow);}
  .muted{color:var(--muted);font-size:13px;}

  label{display:block;font-size:12.5px;color:var(--muted);margin:14px 0 5px;font-weight:700;}
  label:first-child{margin-top:0;}
  input,select,textarea{width:100%;background:var(--input-bg);border:2px solid var(--line);color:var(--ink);padding:10px 12px;border-radius:12px;font-family:'Nunito',sans-serif;font-size:14px;font-weight:600;}
  textarea{resize:vertical;min-height:60px;}
  input.mono,select.mono{font-family:'IBM Plex Mono',monospace;}
  input:focus,select:focus,textarea:focus{outline:none;border-color:var(--coral);}
  .hint{font-size:11.5px;color:var(--muted-2);margin-top:5px;line-height:1.5;}
  .row2{display:grid;grid-template-columns:1fr 1fr;gap:12px;}
  .row3{display:grid;grid-template-columns:1fr 1fr 1fr;gap:12px;}
  .inline-add{display:flex;gap:8px;}
  .inline-add input,.inline-add select{flex:1;}

  .toggle-row{display:flex;gap:8px;margin-bottom:18px;}
  .toggle-btn{flex:1;text-align:center;padding:10px;border-radius:14px;cursor:pointer;border:2px solid var(--line);color:var(--muted);font-size:13px;font-weight:700;}
  .toggle-btn.on{border-color:var(--coral);color:var(--coral-deep);background:#FFF0EB;}
  .toggle-btn.sm{padding:7px;font-size:12px;}

  .chip{display:flex;align-items:center;gap:6px;background:var(--chip-bg);border:2px solid var(--line);padding:5px 12px 5px 5px;border-radius:20px;font-size:13px;font-weight:700;}
  .chip-wrap{display:flex;flex-wrap:wrap;gap:8px;}

  .info-rows{display:flex;flex-direction:column;}
  .info-row{display:flex;justify-content:space-between;align-items:baseline;gap:16px;padding:11px 0;border-bottom:1px solid var(--line);}
  .info-row:last-child{border-bottom:none;}
  .info-row .k{font-size:12px;font-weight:800;text-transform:uppercase;letter-spacing:0.04em;color:var(--muted);flex:0 0 auto;}
  .info-row .v{text-align:right;font-weight:700;color:var(--ink);word-break:break-word;}
  .edit-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:6px;}
  .req-row{display:flex;justify-content:space-between;align-items:center;padding:10px 0;border-bottom:1px solid var(--line);gap:10px;}
  .req-row:last-child{border-bottom:none;}

  .trip-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:16px;}
  .trip-card{border-radius:20px;overflow:hidden;background:var(--card);box-shadow:var(--shadow);cursor:pointer;transition:transform .15s, box-shadow .15s;}
  .trip-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);}
  .trip-cover{height:120px;background-size:cover;background-position:center;position:relative;}
  .trip-body{padding:14px 16px 16px;}
  .trip-body .name{font-family:'Fredoka',sans-serif;font-size:16.5px;color:var(--ink);font-weight:600;}
  .trip-body .meta{font-size:12px;color:var(--muted);margin-top:4px;}
  .trip-body .stack-row{display:flex;justify-content:space-between;align-items:center;margin-top:10px;}

  .hero{position:relative;padding:32px 24px 40px;color:#fff;overflow:hidden;border-radius:0 0 28px 28px;}
  .hero-top{display:flex;justify-content:space-between;align-items:flex-start;gap:16px;flex-wrap:wrap;position:relative;z-index:2;}
  .hero-emoji{font-size:44px;line-height:1;}
  .hero-dest{font-size:28px;font-weight:600;margin:6px 0 4px;font-family:'Fredoka',sans-serif;}
  .hero-code{font-family:'IBM Plex Mono',monospace;background:rgba(255,255,255,0.25);padding:6px 12px;border-radius:12px;font-size:13px;color:#fff;white-space:nowrap;}
  .hero-members{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px;position:relative;z-index:2;}
  .hero-chip{display:flex;align-items:center;gap:6px;background:rgba(255,255,255,0.22);padding:5px 12px 5px 5px;border-radius:20px;font-size:13px;font-weight:700;color:#fff;}

  .tabs{display:flex;gap:4px;background:var(--card);margin:18px 24px 0;padding:12px 20px 0;border-radius:20px 20px 0 0;position:relative;z-index:3;overflow-x:auto;}
  .tab{font-size:12.5px;font-weight:800;color:var(--muted);background:none;border:none;border-bottom:3px solid transparent;padding:6px 4px 10px;margin-right:20px;cursor:pointer;white-space:nowrap;}
  .tab.active{color:var(--coral-deep);border-bottom-color:var(--coral);}

  .ledger-row{display:flex;justify-content:space-between;align-items:center;padding:14px 4px;border-bottom:1px dashed var(--line);gap:12px;}
  .ledger-row:last-child{border-bottom:none;}
  .ledger-desc{font-weight:800;font-size:14.5px;color:var(--ink);}
  .ledger-meta{font-size:12px;color:var(--muted);margin-top:3px;}
  .ledger-amt{font-family:'IBM Plex Mono',monospace;font-size:15px;text-align:right;color:var(--ink);font-weight:600;}
  .ledger-amt small{display:block;font-size:11px;color:var(--muted-2);font-weight:400;}
  .markup-badge{display:inline-block;background:#FFF0D6;color:#9A6B1C;font-size:10.5px;font-weight:800;padding:3px 8px;border-radius:8px;margin-top:5px;}
  .empty{text-align:center;padding:40px 20px;color:var(--muted);}
  .empty .display{font-size:19px;color:var(--ink);margin-bottom:6px;}
  .empty .big-emoji{font-size:40px;margin-bottom:8px;}
  .details-toggle{font-size:11.5px;color:var(--ocean-deep);font-weight:800;cursor:pointer;margin-top:5px;display:inline-block;}
  .details-box{background:#FFF9F0;border-radius:10px;padding:10px 12px;margin-top:8px;font-size:12px;color:var(--ink);line-height:1.8;}

  .split-grid{display:flex;flex-wrap:wrap;gap:8px;margin-top:6px;}
  .split-pill{border:2px solid var(--line);background:var(--surface);color:var(--ink);padding:7px 14px;border-radius:16px;font-size:13px;font-weight:700;cursor:pointer;}
  .split-pill.on{background:var(--ocean);border-color:var(--ocean-deep);color:#fff;}
  .split-row{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:7px 0;}
  .split-row input{width:90px;text-align:right;}
  .split-sum{font-size:12.5px;font-weight:800;margin-top:8px;}
  .split-sum.ok{color:var(--ocean-deep);}
  .split-sum.bad{color:#C9445C;}

  .board-row{display:flex;align-items:center;justify-content:space-between;padding:14px 4px;border-bottom:1px solid var(--line);}
  .board-row:last-child{border-bottom:none;}
  .board-names{font-weight:800;font-size:14.5px;display:flex;align-items:center;gap:8px;}
  .board-names .arrow{color:var(--coral);font-size:16px;}
  .board-amt{font-family:'IBM Plex Mono',monospace;font-size:15.5px;color:var(--coral-deep);font-weight:700;background:#FFF0EB;padding:5px 12px;border-radius:10px;}
  .recovered{display:flex;justify-content:space-between;align-items:center;background:linear-gradient(120deg,#FFF0D6,#FFE7CC);border-radius:18px;padding:16px 20px;margin-bottom:16px;}
  .recovered .num{font-family:'IBM Plex Mono',monospace;color:#9A6B1C;font-size:20px;font-weight:700;}

  .budget-bar-track{background:var(--line);border-radius:10px;height:14px;overflow:hidden;margin-top:8px;}
  .budget-bar-fill{height:100%;border-radius:10px;background:linear-gradient(90deg,var(--ocean),var(--ocean-deep));}
  .budget-bar-fill.over{background:linear-gradient(90deg,var(--coral),var(--coral-deep));}

  .drop-upload{display:block;border:3px dashed var(--line);border-radius:20px;padding:38px 20px;text-align:center;cursor:pointer;background:var(--surface);}
  .drop-upload:hover{border-color:var(--coral);}
  .drop-upload input{display:none;}
  .receipt-preview{max-width:150px;border-radius:14px;box-shadow:var(--shadow);}
  .scan-status{display:flex;align-items:center;gap:10px;color:var(--muted);font-size:13px;margin:14px 0;font-weight:700;}
  .spinner{width:18px;height:18px;border:3px solid var(--line);border-top-color:var(--coral);border-radius:50%;animation:spin .7s linear infinite;}
  @keyframes spin{to{transform:rotate(360deg);}}

  .item-chip{display:flex;align-items:center;gap:6px;background:var(--surface);color:var(--ink);border-radius:14px;padding:9px 12px;font-size:13px;font-weight:700;cursor:grab;user-select:none;box-shadow:var(--shadow);border:2px solid transparent;}
  .item-chip:hover{border-color:var(--gold);}
  .item-chip .emoji{font-size:18px;}
  .item-chip .qty{color:var(--muted);font-size:11px;font-weight:700;}
  .item-chip.dragging{opacity:0.35;}
  .unassigned-tray{display:flex;flex-wrap:wrap;gap:10px;background:var(--chip-bg);border:2px dashed var(--line);border-radius:18px;padding:16px;min-height:60px;}
  .assign-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:12px;margin-top:14px;}
  .assign-col{background:var(--surface);border-radius:18px;padding:14px;min-height:96px;box-shadow:var(--shadow);border:2px solid transparent;}
  .assign-col.dragover{border-color:var(--gold);background:#FFFBEF;}
  .assign-col h3{font-size:13px;margin:0 0 8px;color:var(--ink);font-weight:800;display:flex;align-items:center;gap:6px;}
  .assign-col .subtotal{font-family:'IBM Plex Mono',monospace;font-size:11.5px;color:var(--coral-deep);margin-bottom:8px;font-weight:700;}
  .assign-col .items{display:flex;flex-direction:column;gap:6px;}
  .assign-col .item-chip{width:100%;justify-content:space-between;box-shadow:none;border:1px solid var(--line);}
  .rm-x{background:none;border:none;color:var(--muted-2);cursor:pointer;font-size:14px;padding:0;}

  /* profile */
  .banner{height:150px;border-radius:20px;position:relative;overflow:hidden;cursor:pointer;background:linear-gradient(135deg,var(--coral),var(--pink));}
  .banner img{width:100%;height:100%;object-fit:cover;}
  .banner .overlay{position:absolute;inset:0;background:rgba(0,0,0,0.35);display:flex;align-items:center;justify-content:center;color:#fff;font-weight:700;font-size:13px;opacity:0;transition:opacity .2s;}
  .banner:hover .overlay{opacity:1;}
  .profile-head{display:flex;align-items:flex-end;gap:18px;margin-top:-48px;padding:0 6px;position:relative;z-index:2;}
  .avatar-edit{position:relative;cursor:pointer;}
  .avatar-edit .overlay-c{position:absolute;inset:0;border-radius:50%;background:rgba(0,0,0,0.4);color:#fff;display:flex;align-items:center;justify-content:center;font-size:10px;font-weight:700;text-align:center;opacity:0;transition:opacity .2s;}
  .avatar-edit:hover .overlay-c{opacity:1;}
  .profile-head .info{padding-bottom:8px;}
  .profile-head .info .name{font-family:'Fredoka',sans-serif;font-size:22px;font-weight:600;}
  .profile-head .info .sub{color:var(--muted);font-size:13px;margin-top:2px;font-weight:700;}
  .bio-text{font-size:13.5px;color:var(--ink);margin-top:10px;line-height:1.6;}
  .emoji-grid{display:flex;flex-wrap:wrap;gap:8px;margin-top:8px;}
  .emoji-opt{width:38px;height:38px;border-radius:50%;background:var(--chip-bg);border:2px solid var(--line);display:flex;align-items:center;justify-content:center;font-size:18px;cursor:pointer;}
  .emoji-opt.on{border-color:var(--coral);background:#FFF0EB;}
  .border-grid{display:flex;gap:10px;margin-top:8px;}
  .border-opt{width:46px;height:46px;border-radius:50%;background:#eee;cursor:pointer;display:flex;align-items:center;justify-content:center;font-size:16px;}
  .border-opt.pick-on{outline:3px solid var(--coral-deep);outline-offset:2px;}
  .stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;}
  .stat-card{background:linear-gradient(135deg,#FFF0EB,#FFF6EC);border-radius:16px;padding:12px 6px;text-align:center;}
  .stat-card .num{font-family:'Fredoka',sans-serif;font-size:21px;color:var(--coral-deep);font-weight:600;}
  .stat-card .lbl{font-size:10px;color:var(--muted);font-weight:800;margin-top:2px;}
  .settings-row{display:flex;justify-content:space-between;align-items:center;padding:10px 0;border-bottom:1px solid var(--line);}
  .settings-row:last-child{border-bottom:none;}
  .switch{width:42px;height:24px;border-radius:12px;background:var(--line);position:relative;cursor:pointer;flex-shrink:0;}
  .switch.on{background:var(--ocean);}
  .switch .knob{width:18px;height:18px;border-radius:50%;background:#fff;position:absolute;top:3px;left:3px;transition:left .15s;box-shadow:0 1px 3px rgba(0,0,0,0.2);}
  .switch.on .knob{left:21px;}
  .past-trip-row{display:flex;justify-content:space-between;align-items:center;padding:10px 0;border-bottom:1px solid var(--line);}
  .past-trip-row:last-child{border-bottom:none;}

  /* crop modal */
  .modal-bg{position:fixed;inset:0;background:rgba(0,0,0,0.55);z-index:80;display:flex;align-items:center;justify-content:center;}
  .modal-card{background:var(--surface);border-radius:20px;padding:22px;max-width:340px;width:90%;text-align:center;}
  .crop-viewport{width:200px;height:200px;margin:14px auto;overflow:hidden;position:relative;background:#111;cursor:grab;}
  .crop-viewport.rect{width:280px;height:100px;border-radius:14px;}
  .crop-viewport.circle{border-radius:50%;}
  .crop-viewport img{position:absolute;top:50%;left:50%;user-select:none;pointer-events:none;}

  #toast{position:fixed;bottom:22px;left:50%;transform:translateX(-50%) translateY(20px);background:var(--ink);color:#fff;padding:11px 20px;border-radius:16px;font-size:13.5px;font-weight:700;opacity:0;pointer-events:none;transition:all .25s cubic-bezier(.34,1.56,.64,1);z-index:90;max-width:80%;text-align:center;}
  #toast.show{opacity:1;transform:translateX(-50%) translateY(0);}
  #confetti-layer{position:fixed;inset:0;pointer-events:none;z-index:95;overflow:hidden;}
  .confetti-piece{position:absolute;font-size:22px;top:-30px;animation:fall 1.3s ease-in forwards;}
  @keyframes fall{to{transform:translateY(100vh) rotate(280deg);opacity:0;}}

  .setup-wrap{max-width:440px;margin:36px auto;padding:0 20px;}