:root{
    --primary:#1E6FD9;
    --primary-dark:#175bb3;
    --secondary:#0D9E75;
    --warning:#EF9F27;
    --danger:#E24B4A;
    --surface:#F8F7F4;
    --card:#FFFFFF;
    --ink:#1C1C1A;
    --grey-500:#8b8b86;
    --grey-400:#a6a6a1;
    --grey-300:#c9c9c4;
    --grey-200:#e3e3df;
    --grey-100:#f1f1ee;
    --radius:12px;
    --radius-sm:10px;
  }
  *{box-sizing:border-box;}
  html,body{height:100%;}
  body{
    margin:0;
    background:#e9e9e4;
    font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
    color:var(--ink);
    display:flex;
    justify-content:center;
    align-items:flex-start;
    min-height:100vh;
    padding:0;
  }
  /* ── phone frame ─────────────────────────────────────────── */
  #frame{
    width:100%;
    max-width:100%;
    min-height:100vh;
    background:var(--surface);
    position:relative;
    overflow:hidden;
    display:flex;
    flex-direction:column;
  }

  /* ── app bar ──────────────────────────────────────────────── */
  .appbar{
    background:var(--primary);
    color:#fff;
    padding:14px 8px 14px 4px;
    display:flex;
    align-items:center;
    gap:4px;
    flex-shrink:0;
    z-index:20;
  }
  .appbar .icon-btn{
    width:40px;height:40px;
    border:none;background:transparent;color:#fff;
    display:flex;align-items:center;justify-content:center;
    border-radius:50%;cursor:pointer;flex-shrink:0;
  }
  .appbar .icon-btn:active{background:rgba(255,255,255,0.15);}
  .appbar .title{
    flex:1;min-width:0;
  }
  .appbar .title h1{
    font-size:18px;font-weight:600;margin:0;
    white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
  }
  .appbar .title p{
    font-size:12px;margin:1px 0 0;color:rgba(255,255,255,0.75);
    white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
  }
  .appbar .status-slot{margin-right:6px;}

  /* ── screens ──────────────────────────────────────────────── */
  .screens{flex:1;position:relative;overflow:hidden;}
  .screen{
    position:absolute;inset:0;
    display:flex;flex-direction:column;
    background:var(--surface);
    overflow-y:auto;
    -webkit-overflow-scrolling:touch;
  }
  .screen.hidden{display:none;}
  .screen-body{padding:16px;padding-bottom:100px;flex:1;}

  /* ── generic elements ─────────────────────────────────────── */
  .section-label{font-weight:600;font-size:14px;margin:0 0 8px;}
  .hint{color:var(--grey-500);font-size:13px;margin:0 0 16px;}
  .card{
    background:var(--card);
    border-radius:var(--radius);
    border:1px solid rgba(0,0,0,0.08);
    padding:16px;
  }
  .btn{
    display:flex;align-items:center;justify-content:center;gap:8px;
    width:100%;padding:14px;border-radius:var(--radius-sm);
    border:none;font-size:15px;font-weight:500;cursor:pointer;
    background:var(--primary);color:#fff;
    transition:opacity .15s;
  }
  .btn:active{opacity:.85;}
  .btn:disabled{opacity:.5;cursor:not-allowed;}
  .btn.outline{
    background:transparent;color:var(--primary);
    border:1px solid var(--primary);
  }
  .btn.danger{
    background:transparent;color:var(--danger);
    border:1px solid rgba(226,75,74,.6);
  }
  .btn.small{padding:8px 14px;font-size:13px;width:auto;border-radius:20px;}
  .btn.text{background:transparent;color:var(--primary);width:auto;padding:6px 4px;font-weight:600;}

  input[type=text],input[type=email],input[type=tel],input[type=password],input[type=number],textarea,select{
    width:100%;padding:13px 14px;font-size:14px;border-radius:var(--radius-sm);
    border:1px solid rgba(0,0,0,0.15); background:#fff; color:var(--ink);
    font-family:inherit;
  }
  input:focus,textarea:focus,select:focus{outline:none;border-color:var(--primary);border-width:1.5px;padding:12.5px 13.5px;}
  textarea{resize:vertical;min-height:70px;}
  label.field-label{display:block;font-weight:600;font-size:13px;margin-bottom:6px;}
  .field{margin-bottom:16px;}
  .error-text{color:var(--danger);font-size:12px;margin-top:4px;}

  /* stat cards */
  .stats-row{display:flex;gap:12px;margin-bottom:6px;}
  .stat-card{
    flex:1;padding:14px;border-radius:var(--radius);
    background:var(--stat-c,var(--primary));
  }
  .stat-card .val{font-size:22px;font-weight:600;display:block;margin:8px 0 2px;}
  .stat-card .lbl{font-size:11px;opacity:.8;}

  /* request card */
  .req-card{
    background:#fff;border-radius:var(--radius);border:1px solid rgba(0,0,0,.08);
    padding:16px;margin-bottom:10px;cursor:pointer;
  }
  .req-card:active{background:#fafaf9;}
  .req-top{display:flex;align-items:center;gap:8px;margin-bottom:10px;}
  .chip{
    display:inline-flex;align-items:center;gap:4px;padding:3px 8px;border-radius:6px;
    font-size:11px;font-weight:500;
  }
  .badge{
    padding:4px 10px;border-radius:20px;font-size:12px;font-weight:500;border:1px solid;
    margin-left:auto;white-space:nowrap;
  }
  .req-desc{font-size:14px;font-weight:500;margin:0 0 6px;}
  .req-loc{font-size:12px;color:var(--grey-500);display:flex;gap:4px;align-items:flex-start;}

  /* empty state */
  .empty-state{
    display:flex;flex-direction:column;align-items:center;justify-content:center;
    padding:80px 20px;text-align:center;color:var(--grey-500);
  }
  .empty-state svg{margin-bottom:16px;opacity:.4;}
  .empty-state .t1{font-size:16px;color:var(--grey-500);margin:0 0 6px;}
  .empty-state .t2{font-size:13px;color:var(--grey-400);margin:0;}

  /* FAB */
  .fab{
    position:absolute;right:18px;bottom:22px;
    background:var(--primary);color:#fff;border:none;border-radius:30px;
    padding:14px 20px;display:flex;align-items:center;gap:8px;
    font-size:14px;font-weight:600;cursor:pointer;
    box-shadow:0 4px 14px rgba(30,111,217,0.4);z-index:15;
  }
  .fab:active{opacity:.9;}

  /* service tile */
  .service-tile{
    display:flex;align-items:center;gap:14px;background:#fff;border-radius:var(--radius);
    border:1px solid rgba(0,0,0,.1);padding:16px;margin-bottom:12px;cursor:pointer;
  }
  .service-tile:active{background:#fafaf9;}
  .service-icon{
    width:44px;height:44px;border-radius:10px;background:rgba(30,111,217,.1);
    display:flex;align-items:center;justify-content:center;flex-shrink:0;
  }
  .service-tile h3{margin:0 0 2px;font-size:15px;font-weight:600;}
  .service-tile p{margin:0;font-size:12px;color:var(--grey-500);}

  /* type chip selector (submit form) */
  .type-row{display:flex;gap:12px;margin-bottom:20px;}
  .type-chip{
    flex:1;text-align:center;padding:14px 6px;border-radius:var(--radius-sm);
    border:1px solid var(--grey-200);cursor:pointer;background:#fff;
  }
  .type-chip.selected{border:1.5px solid var(--primary);background:rgba(30,111,217,.08);}
  .type-chip .ic{font-size:22px;display:block;margin-bottom:4px;}
  .type-chip span{font-size:13px;color:var(--grey-500);}
  .type-chip.selected span{color:var(--primary);font-weight:500;}

  /* photo box */
  .photo-box{
    height:130px;border-radius:var(--radius-sm);border:1px solid rgba(0,0,0,.12);
    background:#fff;display:flex;flex-direction:column;align-items:center;justify-content:center;
    cursor:pointer;overflow:hidden;color:var(--grey-400);font-size:13px;
  }
  .photo-box img{width:100%;height:100%;object-fit:cover;}

  /* address tile */
  .addr-tile{
    display:flex;gap:12px;padding:14px;border-radius:var(--radius-sm);margin-bottom:8px;
    border:1px solid var(--grey-200);background:#fff;cursor:pointer;align-items:flex-start;
  }
  .addr-tile.selected{border:1.5px solid var(--primary);background:rgba(30,111,217,.06);}
  .addr-label-row{display:flex;align-items:center;gap:6px;}
  .addr-label{font-weight:600;font-size:13px;}
  .default-pill{
    font-size:9px;font-weight:700;color:var(--secondary);background:rgba(13,158,117,.12);
    padding:1px 6px;border-radius:6px;letter-spacing:.4px;
  }
  .addr-line{font-size:12px;color:var(--grey-500);margin-top:2px;}
  .addr-card{
    background:#fff;border-radius:var(--radius-sm);border:1px solid var(--grey-200);
    padding:14px;margin-bottom:8px;display:flex;gap:12px;align-items:flex-start;
  }
  .addr-actions{display:flex;gap:4px;margin-left:auto;flex-shrink:0;}
  .icon-btn-sm{
    width:32px;height:32px;border:none;background:transparent;border-radius:8px;cursor:pointer;
    display:flex;align-items:center;justify-content:center;color:var(--grey-500);
  }
  .icon-btn-sm:active{background:var(--grey-100);}

  /* footer bar (sticky submit) */
  .footer-bar{
    position:absolute;left:0;right:0;bottom:0;background:#fff;
    padding:12px 16px 16px;box-shadow:0 -2px 8px rgba(0,0,0,.05);z-index:10;
  }

  /* address form */
  .addr-form{background:#fff;border-radius:var(--radius);border:1px solid rgba(30,111,217,.3);padding:16px;margin-bottom:12px;}
  .addr-form-head{display:flex;align-items:center;gap:8px;margin-bottom:14px;}
  .addr-form-head h4{margin:0;font-size:14px;font-weight:600;color:var(--primary);flex:1;}
  .label-chips{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:16px;}
  .label-chip{
    padding:7px 14px;border-radius:20px;font-size:12px;background:var(--grey-100);
    border:1px solid transparent;cursor:pointer;color:var(--grey-500);
  }
  .label-chip.selected{background:rgba(30,111,217,.1);border-color:var(--primary);color:var(--primary);font-weight:600;}
  .two-col{display:flex;gap:12px;}
  .two-col .field{flex:1;}
  .readonly-box{
    background:var(--grey-100);border-radius:var(--radius-sm);padding:13px 14px;font-size:14px;color:var(--grey-500);
  }
  .checkbox-row{display:flex;align-items:center;gap:8px;font-size:14px;margin:4px 0 12px;cursor:pointer;}
  .checkbox-row input{width:16px;height:16px;}
  .divider{height:1px;background:rgba(0,0,0,.08);margin:12px 0;}
  .form-actions{display:flex;gap:10px;margin-top:16px;}
  .form-actions .btn{flex:1;}
  details.instructions summary{font-weight:600;font-size:14px;cursor:pointer;list-style:none;padding:8px 0;}
  details.instructions summary::-webkit-details-marker{display:none;}
  details.instructions .sub{font-size:12px;color:var(--grey-500);font-weight:400;display:block;margin-top:2px;}

  /* dropdown search sheet */
  .sheet-backdrop{
    position:absolute;inset:0;background:rgba(0,0,0,.4);z-index:40;display:none;
  }
  .sheet-backdrop.show{display:block;}
  .sheet{
    position:absolute;left:0;right:0;bottom:0;background:#fff;border-radius:16px 16px 0 0;
    max-height:75%;display:flex;flex-direction:column;
    transform:translateY(100%);transition:transform .2s ease;
  }
  .sheet-backdrop.show .sheet{transform:translateY(0);}
  .sheet-handle{width:36px;height:4px;background:var(--grey-300);border-radius:2px;margin:10px auto 4px;}
  .sheet-title{font-weight:600;font-size:15px;padding:8px 16px 0;}
  .sheet-search{padding:12px 16px 8px;}
  .sheet-list{overflow-y:auto;padding-bottom:12px;}
  .sheet-item{display:flex;align-items:center;gap:12px;padding:10px 16px;cursor:pointer;}
  .sheet-item:active{background:var(--grey-100);}
  .sheet-item .av{
    width:32px;height:32px;border-radius:50%;background:rgba(30,111,217,.1);
    display:flex;align-items:center;justify-content:center;flex-shrink:0;
  }
  .sheet-item .txt strong{display:block;font-size:14px;}
  .sheet-item .txt span{font-size:12px;color:var(--grey-500);}

  /* info card (request detail) */
  .info-card{background:#fff;border-radius:var(--radius);border:1px solid rgba(0,0,0,.08);padding:16px;margin-bottom:14px;}
  .info-card h4{margin:0 0 12px;font-size:14px;font-weight:600;}
  .info-row{display:flex;gap:10px;margin-bottom:10px;font-size:13px;}
  .info-row .lbl{width:90px;flex-shrink:0;color:var(--grey-500);}
  .info-row .val{font-weight:500;}

  /* timeline */
  .timeline{display:flex;background:#fff;border-radius:var(--radius);border:1px solid rgba(0,0,0,.08);padding:16px;}
  .tl-step{flex:1;display:flex;align-items:flex-start;}
  .tl-step .col{flex:1;display:flex;flex-direction:column;align-items:center;}
  .tl-dot{width:28px;height:28px;border-radius:50%;background:var(--grey-200);display:flex;align-items:center;justify-content:center;color:var(--grey-500);}
  .tl-dot.active{background:var(--primary);color:#fff;}
  .tl-label{font-size:10px;color:var(--grey-500);margin-top:4px;text-align:center;}
  .tl-label.active{color:var(--primary);font-weight:500;}
  .tl-line{height:2px;background:var(--grey-200);flex:1;margin-bottom:20px;align-self:flex-start;margin-top:14px;}
  .tl-line.active{background:var(--primary);}
  .cancelled-banner{
    display:flex;align-items:center;gap:12px;padding:16px;border-radius:var(--radius);
    background:rgba(226,75,74,.05);border:1px solid rgba(226,75,74,.2);color:var(--danger);
    font-weight:500;font-size:14px;
  }

  /* technician card */
  .tech-avatar{width:44px;height:44px;border-radius:50%;background:rgba(30,111,217,.1);color:var(--primary);
    display:flex;align-items:center;justify-content:center;font-weight:600;font-size:16px;flex-shrink:0;}
  .tech-row{display:flex;align-items:center;gap:12px;}
  .action-btn{display:inline-flex;align-items:center;gap:4px;padding:7px 12px;border-radius:8px;font-size:12px;font-weight:500;border:1px solid;cursor:pointer;background:none;}

  /* login */
  .logo-box{width:56px;height:56px;background:var(--primary);border-radius:16px;display:flex;align-items:center;justify-content:center;margin-bottom:24px;}
  .tabs{display:flex;padding:4px;background:rgba(30,111,217,.1);border-radius:10px;margin-bottom:24px;}
  .tab-btn{flex:1;padding:10px;text-align:center;border-radius:8px;font-size:14px;font-weight:600;color:var(--primary);cursor:pointer;display:flex;align-items:center;justify-content:center;gap:6px;}
  .tab-btn.active{background:var(--primary);color:#fff;box-shadow:0 2px 6px rgba(30,111,217,.3);}

  /* toast */
  #toast{
    position:absolute;left:16px;right:16px;bottom:22px;background:#333;color:#fff;
    padding:12px 16px;border-radius:10px;font-size:13px;text-align:center;
    opacity:0;pointer-events:none;transition:opacity .25s, transform .25s;transform:translateY(10px);
    z-index:100;
  }
  #toast.show{opacity:1;transform:translateY(0);}

  /* drawer */
  .drawer-backdrop{position:absolute;inset:0;background:rgba(0,0,0,.35);z-index:60;display:none;}
  .drawer-backdrop.show{display:block;}
  .drawer{
    position:absolute;top:0;right:0;bottom:0;width:88%;max-width:360px;background:var(--surface);
    transform:translateX(100%);transition:transform .22s ease;display:flex;flex-direction:column;
  }
  .drawer-backdrop.show .drawer{transform:translateX(0);}
  .drawer-head{display:flex;align-items:center;padding:16px 8px 12px 16px;}
  .drawer-head h3{flex:1;margin:0;font-size:18px;font-weight:600;}
  .drawer-body{flex:1;overflow-y:auto;padding:16px;}
  .id-card{display:flex;align-items:center;gap:14px;background:#fff;border-radius:var(--radius);border:1px solid rgba(0,0,0,.08);padding:16px;margin-bottom:12px;}
  .id-avatar{width:52px;height:52px;border-radius:50%;background:rgba(30,111,217,.1);color:var(--primary);display:flex;align-items:center;justify-content:center;font-weight:700;font-size:22px;flex-shrink:0;}
  .role-pill{display:inline-block;margin-top:2px;font-size:11px;font-weight:600;color:var(--secondary);background:rgba(13,158,117,.12);padding:2px 8px;border-radius:6px;}
  .menu-tile{display:flex;align-items:center;gap:14px;background:#fff;border-radius:var(--radius);border:1px solid rgba(0,0,0,.08);padding:14px;margin-bottom:12px;cursor:pointer;}
  .menu-tile:active{background:#fafaf9;}
  .menu-tile h4{margin:0 0 2px;font-size:14px;font-weight:600;}
  .menu-tile p{margin:0;font-size:12px;color:var(--grey-500);}

  /* modal (confirm dialogs) */
  .modal-backdrop{position:absolute;inset:0;background:rgba(0,0,0,.45);z-index:80;display:none;align-items:center;justify-content:center;padding:24px;}
  .modal-backdrop.show{display:flex;}
  .modal{background:#fff;border-radius:16px;padding:20px;width:100%;max-width:320px;text-align:center;}
  .modal .m-icon{width:56px;height:56px;border-radius:50%;background:rgba(30,111,217,.1);display:flex;align-items:center;justify-content:center;margin:0 auto 14px;}
  .modal h4{margin:0 0 8px;font-size:16px;font-weight:600;}
  .modal p{margin:0 0 18px;font-size:13px;color:var(--grey-500);line-height:1.5;}
  .modal .m-actions{display:flex;gap:10px;}
  .modal .m-actions .btn{flex:1;padding:11px;font-size:14px;}

  svg{display:block;}