:root{
  --pri:#00BCD4;--pri-lt:#4FC3F7;--pri-dk:#0097A7;
  --orange:#FF9800;--orange-bg:#FFF3E0;
  --green:#4CAF50;--green-bg:#E8F5E9;
  --red:#F44336;
  --txt:#1a1a1a;--txt2:#666;--txt3:#999;
  --bg:#f5f5f5;--surface:#fff;--border:#e8e8e8;
  --shadow:0 2px 12px rgba(0,0,0,.07);
  --r:12px;--r-sm:8px;
}
[data-theme="dark"]{
  --txt:#e8e8e8;--txt2:#aaa;--txt3:#888;
  --bg:#121212;--surface:#1e1e1e;--border:#333;
  --shadow:0 2px 12px rgba(0,0,0,.3);
  --orange-bg:#2e1e00;--green-bg:#0e1f0e;
}
[data-theme="dark"] .chip{background:var(--surface);border-color:var(--border);color:var(--txt2)}
[data-theme="dark"] .chip.active{background:#004D56;border-color:var(--pri);color:var(--pri-lt)}
[data-theme="dark"] .result-card{background:var(--surface)}
[data-theme="dark"] .result-card.low-conf{background:#2a1515;border-left-color:var(--red)}
[data-theme="dark"] .drawer{background:#1e1e1e}
[data-theme="dark"] .drawer-item:hover{background:#2a2a2a}
[data-theme="dark"] .scan-list{background:var(--surface)}
[data-theme="dark"] .stat-card{background:var(--surface)}
[data-theme="dark"] .bottom-sheet{background:var(--surface)}
[data-theme="dark"] .batch-header{background:linear-gradient(135deg,#1a5c6a 0%,#00838F 100%);border-bottom-color:var(--border)}
[data-theme="dark"] .batch-footer{background:var(--surface);border-top-color:var(--border)}
[data-theme="dark"] .batch-body{background:var(--bg)}
[data-theme="dark"] .img-toggle{background:rgba(0,0,0,.7)}
[data-theme="dark"] .top-bar.solid{background:linear-gradient(135deg,#1a5c6a 0%,#00838F 100%)}
[data-theme="dark"] .hero{background:linear-gradient(135deg,#1a5c6a 0%,#00838F 100%)}
[data-theme="dark"] .tabs-row{border-bottom-color:var(--border)}
[data-theme="dark"] .auth-card{background:var(--surface)}
[data-theme="dark"] input,
[data-theme="dark"] textarea{background:var(--surface);color:var(--txt);border-color:var(--border)}
[data-theme="dark"] .card-class-badge.digital{background:#004D56;color:#4FC3F7}
[data-theme="dark"] .card-class-badge.analog{background:#2e1e00;color:#FFB74D}
[data-theme="dark"] .results-sheet{background:var(--surface)}
[data-theme="dark"] .section-header,
[data-theme="dark"] .main-content{background:var(--bg)}
[data-theme="dark"] .profile-section{background:var(--bg)}
[data-theme="dark"] .warning-msg{color:var(--txt3)}
[data-theme="dark"] .btn-outline{border-color:var(--border);color:var(--txt2)}
[data-theme="dark"] .scan-item{border-bottom-color:var(--border)}
*{margin:0;padding:0;box-sizing:border-box;
  scrollbar-width:thin;scrollbar-color:#b2ebf2 transparent}
::-webkit-scrollbar{width:6px;height:6px}
::-webkit-scrollbar-track{background:transparent}
::-webkit-scrollbar-thumb{background:#b2ebf2;border-radius:3px}
::-webkit-scrollbar-thumb:hover{background:#4dd0e1}
html{height:100%;-webkit-tap-highlight-color:transparent}
body{font-family:'Inter',system-ui,-apple-system,sans-serif;
  background:var(--bg);color:var(--txt);min-height:100%;
  -webkit-font-smoothing:antialiased;overflow-x:hidden}
a{text-decoration:none;color:inherit}
button{font-family:inherit;cursor:pointer}

.hero{background:linear-gradient(135deg,#87CEEB 0%,#00BCD4 100%)}
.top-bar{padding:14px 16px;display:flex;justify-content:space-between;
  align-items:center;color:#fff;position:sticky;top:0;z-index:50}
.top-bar.solid{background:linear-gradient(135deg,#87CEEB 0%,#00BCD4 100%)}
.top-bar .icon-btn{background:none;border:none;color:#fff;font-size:0;
  padding:4px;border-radius:50%}
.top-bar .icon-btn .material-icons-round{font-size:26px}
.logo{display:flex;align-items:center;gap:6px}
.logo-icon{height:26px;width:auto;filter:brightness(0) invert(1)}
.logo-text{font-size:18px;letter-spacing:.5px}
.logo-text strong{font-weight:700}

.hero-body{padding:0 16px 22px}
.stats-card{padding:16px;background:var(--surface);border-radius:16px;box-shadow:var(--shadow)}
.stats-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:14px}
.stats-title{font-size:13px;font-weight:700;letter-spacing:.5px;color:var(--txt)}
.stats-grid{display:grid;grid-template-columns:1fr 1fr 1fr;gap:10px}
.stat-item{display:flex;flex-direction:column;align-items:center;gap:8px;
  padding:12px 8px;border:1px solid #e8f5f7;border-radius:var(--r);background:#fafffe;text-align:center}
.stat-icon{width:36px;height:36px;border-radius:50%;
  background:#e0f7fa;display:flex;align-items:center;justify-content:center}
.stat-icon .material-icons-round{font-size:18px;color:var(--pri)}
.stat-info{display:flex;flex-direction:column;align-items:center}
.stat-value{font-size:20px;font-weight:700}
.stat-label{font-size:11px;color:var(--txt3)}

.main-content{padding-bottom:80px;background:var(--surface)}

.section-header{display:flex;justify-content:space-between;align-items:center;padding:16px 16px 8px}
.section-header h3{font-size:16px;font-weight:600}
.view-all{font-size:13px;color:var(--txt3);border:1px solid var(--border);padding:4px 10px;border-radius:6px}

.tabs-row{display:flex;align-items:center;padding:0 16px;border-bottom:1px solid var(--border)}
.tabs-row .tabs{display:flex;gap:0;flex:1;border-bottom:none}
.tab{background:none;border:none;padding:10px 16px;font-size:14px;
  color:var(--txt3);border-bottom:2px solid transparent;font-weight:500}
.tab.active{color:#2196F3;border-bottom-color:#2196F3}

.scan-list{padding:0 16px}
.scan-item{display:flex;align-items:center;gap:12px;padding:14px 0;border-bottom:1px solid #f3f3f3}
.scan-thumb{width:56px;height:56px;border-radius:var(--r-sm);
  background:#f0f0f0;display:flex;align-items:center;justify-content:center;
  overflow:hidden;flex-shrink:0}
.scan-thumb .material-icons-round{font-size:28px;color:#bbb}
.scan-thumb img{width:100%;height:100%;object-fit:cover}
.scan-info{flex:1;min-width:0}
.scan-reading{font-size:15px;font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.scan-id-line{font-size:12px;color:var(--txt3);margin-top:2px}
.scan-meta{display:flex;flex-direction:column;align-items:flex-end;gap:6px;flex-shrink:0}
.type-badge{padding:4px 12px;border-radius:20px;font-size:11px;font-weight:600}
.type-badge.type-digital{background:#E3F2FD;color:#1565C0}
.type-badge.type-analog{background:#FFF3E0;color:#E65100}
[data-theme="dark"] .type-badge.type-digital{background:#004D56;color:#4FC3F7}
[data-theme="dark"] .type-badge.type-analog{background:#2e1e00;color:#FFB74D}
.scan-time{font-size:11px;color:var(--txt3)}

.bottom-nav{position:fixed;bottom:0;left:0;right:0;height:64px;
  background:#fff;display:flex;justify-content:space-around;
  align-items:center;box-shadow:0 -2px 10px rgba(0,0,0,.08);z-index:100}
.nav-item{display:flex;flex-direction:column;align-items:center;gap:2px;
  color:var(--txt3);font-size:11px;padding:6px 12px}
.nav-item .material-icons-round{font-size:24px}
.nav-item.active{color:#2196F3}
.scan-center{position:relative}
.scan-fab{width:54px;height:54px;border-radius:50%;
  background:linear-gradient(135deg,#4FC3F7,#00BCD4);
  display:flex;align-items:center;justify-content:center;
  color:#fff;margin-top:-30px;box-shadow:0 4px 14px rgba(0,188,212,.4)}
.scan-fab .material-icons-round{font-size:26px}

/* ---- Sidebar / Drawer ---- */
.drawer-overlay{position:fixed;inset:0;background:rgba(0,0,0,.4);z-index:500;
  opacity:0;pointer-events:none;transition:opacity .25s}
.drawer-overlay.open{opacity:1;pointer-events:auto}
.drawer{position:fixed;top:0;left:0;bottom:0;width:280px;background:#fff;
  z-index:510;transform:translateX(-100%);transition:transform .25s ease;
  display:flex;flex-direction:column;box-shadow:4px 0 20px rgba(0,0,0,.12)}
.drawer.open{transform:translateX(0)}
.drawer-header{background:linear-gradient(135deg,#87CEEB 0%,#00BCD4 100%);
  padding:32px 20px 20px;color:#fff}
.drawer-avatar{width:52px;height:52px;border-radius:50%;background:rgba(255,255,255,.25);
  display:flex;align-items:center;justify-content:center;margin-bottom:12px}
.drawer-avatar .material-icons-round{font-size:30px}
.drawer-name{font-size:16px;font-weight:600}
.drawer-email{font-size:12px;opacity:.85;margin-top:2px}
.drawer-nav{flex:1;padding:8px 0;overflow-y:auto}
.drawer-item{display:flex;align-items:center;gap:14px;padding:13px 20px;
  font-size:14px;font-weight:500;color:var(--txt);transition:background .12s}
.drawer-item:hover{background:#f5f5f5}
.drawer-item .material-icons-round{font-size:22px;color:var(--txt2)}
.drawer-divider{height:1px;background:var(--border);margin:6px 0}
.drawer-item.danger{color:var(--red)}
.drawer-item.danger .material-icons-round{color:var(--red)}

/* ---- Auth Pages (login / register) ---- */
.auth-page{min-height:100vh;background:linear-gradient(135deg,#87CEEB 0%,#00BCD4 100%);
  display:flex;align-items:center;justify-content:center;padding:24px}
.auth-card{width:100%;max-width:400px;background:#fff;border-radius:16px;
  padding:36px 28px;box-shadow:0 8px 32px rgba(0,0,0,.12)}
.auth-brand{text-align:center;margin-bottom:24px}
.auth-brand img{height:44px;width:auto}
.form-group{margin-bottom:18px}
.form-label{display:block;font-size:14px;font-weight:500;margin-bottom:8px}
.required{color:var(--red);margin-left:2px}
.form-input{width:100%;padding:13px 16px;border:1px solid #ddd;border-radius:8px;
  font-size:14px;font-family:inherit;outline:none;transition:border-color .2s}
.form-input:focus{border-color:var(--pri)}
.auth-btn{width:100%;padding:14px;border:none;border-radius:8px;
  font-size:15px;font-weight:600;font-family:inherit;cursor:pointer;transition:background .2s}
.auth-btn.primary{background:var(--pri);color:#fff;margin-top:8px}
.auth-btn.primary:hover{background:var(--pri-dk)}
.auth-link{display:block;text-align:center;margin-top:18px;font-size:13px;color:var(--txt2)}
.auth-link a{color:var(--pri-dk);font-weight:600}
.error-msg{background:#FFEBEE;color:var(--red);padding:10px 14px;border-radius:8px;font-size:13px;margin-bottom:16px}
.success-msg{background:var(--green-bg);color:var(--green);padding:10px 14px;border-radius:8px;font-size:13px;margin-bottom:16px}

/* ---- Profile Page ---- */
.profile-page .main-content{padding-top:0}
.profile-section{padding:20px 16px;max-width:480px;margin:0 auto}
.profile-section h3{font-size:16px;font-weight:600;margin-bottom:16px;padding-bottom:8px;border-bottom:1px solid var(--border)}
.profile-actions{margin-top:8px}
.profile-actions .auth-btn{margin-top:12px}

.scan-page{display:flex;flex-direction:column;height:100vh;height:100dvh;background:#000}
.scan-header{background:#1a1a1a;padding:12px 16px;display:flex;
  justify-content:space-between;align-items:center;color:#fff;z-index:10}
.back-link{display:flex;align-items:center;gap:4px;color:#fff;font-size:14px;background:none;border:none}
.back-link .material-icons-round{font-size:22px}
.header-title{font-size:16px;font-weight:600;color:#fff}
.icon-btn-lt{background:none;border:none;color:#fff;padding:4px}
.mode-toggle{position:absolute;top:56px;left:50%;transform:translateX(-50%);
  display:flex;background:rgba(255,255,255,.15);border-radius:20px;
  overflow:hidden;z-index:20;backdrop-filter:blur(8px)}
.mode-btn{padding:7px 18px;border:none;background:transparent;
  color:rgba(255,255,255,.7);font-size:13px;font-weight:500;transition:all .15s}
.mode-btn.active{background:var(--pri);color:#fff;border-radius:20px}
.ai-toggle-bar{position:absolute;top:92px;left:50%;transform:translateX(-50%);
  display:inline-flex;gap:4px;padding:3px;border-radius:16px;z-index:20;
  backdrop-filter:blur(8px);background:rgba(0,0,0,.35);user-select:none}
.ai-provider-btn{display:inline-flex;align-items:center;gap:3px;padding:4px 10px;
  border:none;border-radius:12px;font-size:11px;font-weight:600;
  background:transparent;color:rgba(255,255,255,.55);cursor:pointer;
  transition:all .2s;letter-spacing:.2px;white-space:nowrap}
.ai-provider-btn .ai-provider-icon{font-size:14px}
.ai-provider-btn .ai-provider-status{font-size:9px;opacity:.7}
.ai-provider-btn.active:not(.ai-unavailable){background:rgba(46,125,50,.5);color:#81C784}
.ai-provider-btn.ai-unavailable{opacity:.35;cursor:not-allowed;color:rgba(255,255,255,.35)}
.ai-provider-btn:not(.ai-unavailable):hover{background:rgba(255,255,255,.1)}
.ai-provider-btn:not(.ai-unavailable):active{transform:scale(.95)}
.ai-provider-btn .ai-provider-icon{animation:none}
.ai-provider-btn:disabled:not(.ai-unavailable) .ai-provider-icon{animation:spin .8s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}
.camera-area{flex:1;position:relative;overflow:hidden;display:flex;
  align-items:center;justify-content:center;background:#111}
.camera-area video,.camera-area>img{width:100%;height:100%;object-fit:cover}
.upload-fallback{display:flex;flex-direction:column;align-items:center;
  gap:8px;color:#888;cursor:pointer;text-align:center;position:relative}
.upload-fallback input[type=file]{position:absolute;inset:0;opacity:0;cursor:pointer}
.capture-bar{background:rgba(0,0,0,.85);padding:20px 0;display:flex;
  justify-content:center;align-items:center;gap:40px}
.side-btn{background:none;border:none;color:#fff;padding:8px}
.side-btn .material-icons-round{font-size:28px}
.capture-btn{width:66px;height:66px;border-radius:50%;background:#fff;
  border:4px solid rgba(255,255,255,.4);transition:transform .1s}
.capture-btn:active{transform:scale(.92)}
.capture-btn:disabled{opacity:.5}

.overlay{position:fixed;inset:0;background:rgba(0,0,0,.35);
  opacity:0;pointer-events:none;transition:opacity .3s;z-index:150}
.overlay.active{opacity:1;pointer-events:auto}
.results-sheet{position:fixed;bottom:0;left:0;right:0;background:#fff;
  border-radius:20px 20px 0 0;padding:12px 24px 34px;
  transform:translateY(100%);transition:transform .35s ease;
  z-index:200;max-height:65vh;overflow-y:auto}
.results-sheet.active{transform:translateY(0)}
.sheet-handle{width:40px;height:4px;background:#ddd;border-radius:2px;margin:0 auto 16px}
.result-status{display:flex;align-items:center;gap:8px;justify-content:center;margin-bottom:6px}
.reading-display{text-align:center;margin-bottom:2px;
  display:flex;align-items:baseline;justify-content:center;gap:4px}
.reading-val{font-size:38px;font-weight:700}
.reading-unit{font-size:22px;color:var(--txt2)}
.edit-reading{background:none;border:none;color:var(--txt3);padding:4px}
.confidence-text{text-align:center;color:var(--txt3);font-size:13px;margin-bottom:14px}
.class-info{text-align:center;font-size:12px;color:var(--txt3);margin-bottom:6px}
.divider{border:none;border-top:1px solid var(--border);margin:0 0 14px}
.unit-section{margin-bottom:8px}
.unit-label{font-size:14px;font-weight:500;margin-bottom:10px;display:block}
.unit-chips{display:flex;gap:8px;flex-wrap:wrap}
.chip{padding:7px 18px;border:1.5px solid #ddd;border-radius:20px;
  background:#fff;font-size:13px;font-weight:500;color:var(--txt2);transition:all .15s}
.chip.active{border-color:var(--pri);background:#e0f7fa;color:var(--pri-dk)}
.warning-msg{text-align:center;color:var(--orange);font-size:12px;
  margin:16px 0;display:flex;align-items:center;justify-content:center;gap:6px}
.sheet-actions{display:flex;gap:12px;margin-top:12px}
.btn-outline{flex:1;padding:13px;border:1.5px solid var(--border);
  border-radius:8px;background:#fff;font-size:14px;font-weight:500}
.btn-primary{flex:1;padding:13px;border:none;border-radius:8px;
  background:var(--pri);color:#fff;font-size:14px;font-weight:500;transition:background .2s}
.btn-primary:hover{background:var(--pri-dk)}

.batch-panel{position:fixed;inset:0;background:var(--bg);z-index:250;display:none;flex-direction:column}
.batch-panel.active{display:flex}
.batch-header{background:linear-gradient(135deg,#87CEEB 0%,#00BCD4 100%);
  padding:14px 16px;display:flex;justify-content:space-between;align-items:center;color:#fff}
.batch-body{flex:1;overflow-y:auto;padding:16px;padding-bottom:24px}
.group-title{font-size:15px;font-weight:700;margin:16px 0 10px;display:flex;align-items:center;gap:8px}
.group-title:first-child{margin-top:0}
.group-count{font-size:12px;font-weight:500;background:var(--pri);color:#fff;padding:2px 8px;border-radius:10px}
.result-card{background:#fff;border-radius:var(--r);box-shadow:var(--shadow);margin-bottom:14px;overflow:hidden}
.card-img-wrap{position:relative;background:#111;aspect-ratio:4/3;overflow:hidden}
.card-img-wrap img{width:100%;height:100%;object-fit:contain;display:block}
.card-img-wrap img.hidden{display:none}
.img-toggle{position:absolute;bottom:8px;left:50%;transform:translateX(-50%);
  display:flex;background:rgba(0,0,0,.6);border-radius:16px;overflow:hidden;backdrop-filter:blur(4px)}
.img-toggle button{padding:5px 14px;border:none;background:transparent;
  color:rgba(255,255,255,.6);font-size:11px;font-weight:500}
.img-toggle button.active{background:rgba(255,255,255,.2);color:#fff}
.card-body{padding:14px}
.card-class-row{display:flex;align-items:center;gap:8px;margin-bottom:8px}
.card-class-badge{padding:3px 10px;border-radius:10px;font-size:11px;font-weight:600;text-transform:capitalize}
.card-class-badge.digital{background:#E3F2FD;color:#1565C0}
.card-class-badge.analog{background:#FFF3E0;color:#E65100}
.card-class-conf{font-size:11px;color:var(--txt3)}
.card-reading-row{margin-bottom:4px;display:flex;align-items:center;gap:6px;position:relative}
.card-reading-input{font-size:24px;font-weight:700;border:1.5px dashed var(--border);
  border-radius:8px;background:var(--bg);color:var(--txt);padding:8px 36px 8px 10px;width:100%;
  font-family:'Courier New',monospace;letter-spacing:.5px;outline:none;transition:all .2s;box-sizing:border-box}
.card-reading-input:focus{border-color:var(--pri);border-style:solid;background:#fff;
  box-shadow:0 0 0 3px rgba(0,188,212,.12)}
.card-reading-input::placeholder{color:var(--txt3);font-weight:400;font-size:14px;
  font-family:'Inter',system-ui,sans-serif;letter-spacing:0}
.card-reading-row::after{content:'edit';font-family:'Material Icons Round';font-size:18px;
  position:absolute;right:10px;top:50%;transform:translateY(-50%);color:var(--txt3);
  pointer-events:none;opacity:.5}
.card-reading-input:focus+.card-reading-row::after,
.card-reading-row:focus-within::after{opacity:0}
[data-theme="dark"] .card-reading-input{color:var(--txt);background:var(--surface)}
[data-theme="dark"] .card-reading-input:focus{border-color:var(--pri-lt);background:var(--surface);
  box-shadow:0 0 0 3px rgba(0,188,212,.15)}
.card-conf{font-size:12px;color:var(--txt3);margin-bottom:8px}
.result-card.low-conf{border-left:4px solid var(--red);background:#FFF5F5}
.result-card.low-conf .card-conf{color:var(--red);font-weight:600}
.card-unit-chips{display:flex;gap:6px;flex-wrap:wrap;margin-bottom:8px}
.card-unit-chips .chip{padding:5px 14px;font-size:12px}
.card-note{font-size:12px;color:var(--txt3);font-style:italic}
.card-warning{font-size:11px;color:var(--orange);display:flex;align-items:center;gap:4px;margin-top:6px}
.unit-hint{font-size:11px;color:var(--orange);display:flex;align-items:center;gap:4px;margin-top:6px}
.card-ai-badge{display:inline-block;padding:2px 8px;border-radius:8px;font-size:10px;font-weight:600;background:#E8F5E9;color:#2E7D32;margin-left:auto}
.card-readings{display:flex;flex-direction:column;gap:0}
.card-rdg-row{display:flex;align-items:center;gap:8px;padding:8px 0;border-bottom:1px solid var(--border)}
.card-rdg-row:last-child{border-bottom:none}
.card-rdg-row .rr-check{width:20px;height:20px;accent-color:var(--pri);cursor:pointer;flex-shrink:0}
.card-rdg-row .card-reading-input{font-size:16px;font-weight:700;min-width:0;flex:1;
  font-family:'Courier New',monospace;letter-spacing:.5px;
  border:1.5px dashed var(--border);border-radius:6px;background:var(--bg);
  color:var(--txt);padding:6px 8px;outline:none;transition:all .2s;box-sizing:border-box}
.card-rdg-row .card-reading-input:focus{border-color:var(--pri);border-style:solid;background:#fff;
  box-shadow:0 0 0 3px rgba(0,188,212,.12)}
.card-rdg-row .card-reading-input::placeholder{color:var(--txt3);font-weight:400;font-size:13px;
  font-family:'Inter',system-ui,sans-serif;letter-spacing:0}
.card-rdg-row .rr-unit{padding:4px 6px;border:1.5px solid var(--border);border-radius:6px;
  font-size:12px;background:var(--surface);color:var(--txt);font-family:inherit;
  appearance:auto;cursor:pointer;flex-shrink:0}
.rdg-remove{background:none;border:none;color:var(--txt3);padding:2px;cursor:pointer;
  border-radius:50%;transition:all .15s;flex-shrink:0;display:flex;align-items:center;justify-content:center}
.rdg-remove:hover{background:rgba(244,67,54,.1);color:var(--red)}
.card-add-btn{display:flex;align-items:center;gap:4px;justify-content:center;
  width:100%;padding:8px;border:1.5px dashed var(--border);border-radius:var(--r-sm);
  background:transparent;color:var(--pri-dk);font-size:12px;font-weight:500;
  margin-top:8px;transition:background .15s}
.card-add-btn:hover{background:#e0f7fa}
[data-theme="dark"] .card-rdg-row .card-reading-input{color:var(--txt);background:var(--surface)}
[data-theme="dark"] .card-rdg-row .card-reading-input:focus{background:var(--surface);box-shadow:0 0 0 3px rgba(0,188,212,.15)}
[data-theme="dark"] .card-rdg-row .rr-unit{background:var(--surface);color:var(--txt);border-color:var(--border)}
[data-theme="dark"] .rdg-remove:hover{background:rgba(244,67,54,.15)}
[data-theme="dark"] .card-add-btn{border-color:var(--border);color:var(--pri-lt)}
[data-theme="dark"] .card-add-btn:hover{background:#1a3a3f}
[data-theme="dark"] .card-ai-badge{background:#1b3d1e;color:#81C784}
.batch-footer{padding:12px 16px;background:#fff;border-top:1px solid var(--border);display:flex;gap:12px}

/* ---- Image zoom popup ---- */
.zoom-overlay{position:fixed;inset:0;background:rgba(0,0,0,.92);z-index:600;
  display:none;align-items:center;justify-content:center;flex-direction:column}
.zoom-overlay.active{display:flex}
.zoom-close{position:absolute;top:12px;right:12px;z-index:610;width:40px;height:40px;
  border-radius:50%;background:rgba(255,255,255,.15);border:none;color:#fff;
  display:flex;align-items:center;justify-content:center;cursor:pointer;
  backdrop-filter:blur(4px);transition:background .15s}
.zoom-close:hover{background:rgba(255,255,255,.3)}
.zoom-close .material-icons-round{font-size:24px}
.zoom-container{width:100%;height:100%;display:flex;align-items:center;justify-content:center;
  overflow:hidden;touch-action:none;cursor:grab}
.zoom-container:active{cursor:grabbing}
#zoomImg{max-width:100%;max-height:100%;object-fit:contain;transition:transform .15s ease;
  transform-origin:center center;user-select:none;-webkit-user-drag:none;pointer-events:none}
.card-img-wrap img:not(.hidden){cursor:zoom-in}
#capturedImage,#capturedAnnotated{cursor:zoom-in}
.single-img-toggle{position:absolute;bottom:8px;left:50%;transform:translateX(-50%);z-index:15}

.processing-spinner{position:absolute;inset:0;background:rgba(0,0,0,.6);
  display:none;align-items:center;justify-content:center;z-index:30;color:#fff;flex-direction:column;gap:12px}
.processing-spinner.active{display:flex}
@keyframes spin{to{transform:rotate(360deg)}}
.spinner{width:40px;height:40px;border:3px solid rgba(255,255,255,.3);
  border-top-color:#fff;border-radius:50%;animation:spin .8s linear infinite}

/* ---- Multi-reading sheet ---- */
.status-subtitle{text-align:center;font-size:12px;color:var(--txt3);margin-bottom:12px}
.class-override{display:flex;align-items:center;justify-content:space-between;
  margin-bottom:14px;padding:10px 14px;background:var(--bg);border-radius:var(--r-sm)}
.class-toggle{display:flex;gap:0;border:1.5px solid var(--border);border-radius:8px;overflow:hidden}
.class-btn{padding:5px 14px;border:none;background:transparent;font-size:12px;font-weight:500;
  color:var(--txt2);transition:all .15s}
.class-btn.active{background:var(--pri);color:#fff}
.reading-list{display:flex;flex-direction:column;gap:0}
.reading-row{display:flex;align-items:center;gap:10px;padding:12px 0;
  border-bottom:1px solid var(--border)}
.reading-row:last-child{border-bottom:none}
.reading-row.low-conf{background:rgba(244,67,54,.04)}
.rr-check{width:22px;height:22px;accent-color:var(--pri);cursor:pointer;flex-shrink:0}
.rr-value{font-size:18px;font-weight:700;min-width:0;flex:1;
  font-family:'Courier New',monospace;letter-spacing:.5px;
  border:1.5px dashed var(--border);border-radius:6px;background:var(--bg);
  color:var(--txt);padding:6px 8px;outline:none;transition:all .2s;box-sizing:border-box}
.rr-value:focus{border-color:var(--pri);border-style:solid;background:#fff;
  box-shadow:0 0 0 3px rgba(0,188,212,.12)}
.rr-value::placeholder{color:var(--txt3);font-weight:400;font-size:13px;
  font-family:'Inter',system-ui,sans-serif;letter-spacing:0}
[data-theme="dark"] .rr-value{color:var(--txt);background:var(--surface)}
[data-theme="dark"] .rr-value:focus{background:var(--surface);box-shadow:0 0 0 3px rgba(0,188,212,.15)}
.rr-unit{padding:4px 8px;border:1.5px solid var(--border);border-radius:6px;
  font-size:12px;background:var(--surface);color:var(--txt);
  font-family:inherit;appearance:auto;cursor:pointer;flex-shrink:0}
.rr-conf{font-size:12px;color:var(--txt3);white-space:nowrap;margin-left:auto;flex-shrink:0}
.rr-conf.warn{color:var(--red);font-weight:600}
.add-reading-btn{display:flex;align-items:center;gap:6px;justify-content:center;
  width:100%;padding:10px;border:1.5px dashed var(--border);border-radius:var(--r-sm);
  background:transparent;color:var(--pri-dk);font-size:13px;font-weight:500;
  margin:10px 0;transition:background .15s}
.add-reading-btn:hover{background:#e0f7fa}
.sheet-btn-row{display:flex;gap:8px;margin:10px 0}
.sheet-btn-row .add-reading-btn{margin:0;flex:1}
.ask-ai-btn{display:inline-flex;align-items:center;gap:6px;justify-content:center;
  padding:10px 16px;border:1.5px solid #4CAF50;border-radius:var(--r-sm);
  background:#E8F5E9;color:#2E7D32;font-size:13px;font-weight:600;
  cursor:pointer;transition:all .15s;white-space:nowrap}
.ask-ai-btn:hover{background:#C8E6C9}
.ask-ai-btn:disabled{opacity:.5;cursor:not-allowed}
.flash-btn{background:none;border:none;color:#fff;padding:4px;border-radius:50%;font-size:0;
  transition:opacity .15s}
.flash-btn.on{color:#FFD600}
[data-theme="dark"] .class-override{background:var(--border)}
[data-theme="dark"] .class-toggle{border-color:#555}
[data-theme="dark"] .class-btn{color:var(--txt2)}
[data-theme="dark"] .class-btn.active{background:var(--pri-dk);color:#fff}
[data-theme="dark"] .rr-unit{background:var(--surface);color:var(--txt);border-color:var(--border)}
[data-theme="dark"] .add-reading-btn{border-color:var(--border);color:var(--pri-lt)}
[data-theme="dark"] .add-reading-btn:hover{background:#1a3a3f}
[data-theme="dark"] .ask-ai-btn{background:#1b3d1e;color:#81C784;border-color:#388E3C}
[data-theme="dark"] .ask-ai-btn:hover{background:#2e5e32}
[data-theme="dark"] .reading-row.low-conf{background:rgba(244,67,54,.08)}

.history-page .main-content{padding-top:0}
.empty-state{display:flex;flex-direction:column;align-items:center;
  justify-content:center;padding:80px 20px;color:var(--txt3)}
.empty-state p{margin-top:12px;font-size:15px}

.export-btn{display:inline-flex;align-items:center;gap:4px;padding:6px 12px;
  border:1.5px solid var(--pri);border-radius:8px;background:#fff;
  color:var(--pri-dk);font-size:12px;font-weight:500;transition:all .15s;
  flex-shrink:0;margin-right:2px}
.export-btn:hover{background:#e0f7fa}
.export-btn .material-icons-round{font-size:16px}

@media(min-width:480px){
  .main-content,.scan-list,.tabs-row,.section-header{width:100%;max-width:600px;margin-left:auto;margin-right:auto}
  .hero-body{width:100%;max-width:600px;margin-left:auto;margin-right:auto}
  .batch-body{width:100%;max-width:620px;margin-left:auto;margin-right:auto}
  .auth-card{padding:40px 32px}
}
@media(min-width:768px){
  .main-content,.scan-list,.tabs-row,.section-header{max-width:720px}
  .hero-body{max-width:720px}
  .batch-body{max-width:740px}
}
@media(min-width:1024px){
  .main-content,.scan-list,.tabs-row,.section-header{max-width:800px}
  .hero-body{max-width:800px}
  .batch-body{max-width:820px}
}

[data-theme="dark"] .stat-item{background:#1a2a2e;border-color:#1e3438}
[data-theme="dark"] .stat-icon{background:#0d2428}
[data-theme="dark"] .bottom-nav{background:#1a1a1a;box-shadow:0 -2px 10px rgba(0,0,0,.4)}
[data-theme="dark"] .nav-item{color:#888}
[data-theme="dark"] .nav-item.active{color:#4FC3F7}
[data-theme="dark"] .export-btn{background:transparent;border-color:var(--pri-dk);color:var(--pri-lt)}
[data-theme="dark"] .export-btn:hover{background:rgba(0,188,212,.1)}
[data-theme="dark"] .scan-thumb{background:#2a2a2a}
[data-theme="dark"] .view-all{border-color:var(--border);color:var(--txt3)}
[data-theme="dark"] .stats-card{background:#1e2828;box-shadow:0 2px 12px rgba(0,0,0,.3)}
[data-theme="dark"] .scan-fab{box-shadow:0 4px 14px rgba(0,188,212,.25)}
[data-theme="dark"] .btn-outline{background:transparent}
[data-theme="dark"] .sheet-handle{background:var(--border)}
[data-theme="dark"] .auth-page{background:linear-gradient(135deg,#0a1a20 0%,#0d2830 100%)}
[data-theme="dark"] .auth-card{box-shadow:0 8px 32px rgba(0,0,0,.5)}
[data-theme="dark"] .auth-brand img{filter:brightness(1.4)}
[data-theme="dark"] .auth-link{color:var(--txt3)}
[data-theme="dark"] .auth-link a{color:var(--pri-lt)}
[data-theme="dark"] .form-label{color:var(--txt2)}
[data-theme="dark"] .drawer-header{background:linear-gradient(135deg,#1a5c6a 0%,#00838F 100%)}
[data-theme="dark"] .error-msg{background:#2a1515;color:#ef9a9a}
[data-theme="dark"] .success-msg{background:#0e1f0e;color:#81c784}
.scan-item{transition:background .12s;cursor:pointer}
.scan-item:active{background:rgba(0,0,0,.03)}
[data-theme="dark"] .scan-item:active{background:rgba(255,255,255,.04)}

@keyframes skel-shimmer{0%{background-position:-400px 0}100%{background-position:400px 0}}
.skel-group{display:none;padding:0 16px}
.skel-group.active{display:block}
.skel-item{display:flex;align-items:center;gap:12px;padding:14px 0;border-bottom:1px solid var(--border)}
.skel-thumb{width:56px;height:56px;border-radius:var(--r-sm);flex-shrink:0}
.skel-info{flex:1;display:flex;flex-direction:column;gap:8px}
.skel-meta{display:flex;flex-direction:column;align-items:flex-end;gap:8px;flex-shrink:0}
.skel-line{height:14px;border-radius:4px}
.skel-pulse{background:linear-gradient(90deg,#e8e8e8 25%,#f5f5f5 50%,#e8e8e8 75%);
  background-size:800px 100%;animation:skel-shimmer 1.5s infinite linear}
[data-theme="dark"] .skel-pulse{background:linear-gradient(90deg,#2a2a2a 25%,#3a3a3a 50%,#2a2a2a 75%);
  background-size:800px 100%;animation:skel-shimmer 1.5s infinite linear}

.home-page{display:flex;flex-direction:column;height:100vh;height:100dvh;overflow:hidden}
.home-page .hero{flex-shrink:0}
.home-page .main-content{flex:1;overflow:hidden;display:flex;flex-direction:column;padding-bottom:0}
.home-page .section-header{flex-shrink:0;background:var(--surface)}
.home-page .tabs-row{flex-shrink:0;background:var(--surface)}
.home-page .scan-list{flex:1;overflow-y:auto;padding-bottom:80px}
[data-theme="dark"] .home-page .main-content,
[data-theme="dark"] .home-page .section-header,
[data-theme="dark"] .home-page .tabs-row{background:var(--surface)}

.history-page{display:flex;flex-direction:column;height:100vh;height:100dvh;overflow:hidden}
.history-page .top-bar{flex-shrink:0;position:relative}
.history-page .main-content{flex:1;overflow:hidden;display:flex;flex-direction:column;padding-bottom:0;padding-top:0}
.history-page .tabs-row{flex-shrink:0;background:var(--surface)}
.history-page .scan-list{flex:1;overflow-y:auto;padding-bottom:80px}
[data-theme="dark"] .history-page .main-content,
[data-theme="dark"] .history-page .tabs-row{background:var(--surface)}

.detail-overlay{position:fixed;inset:0;background:rgba(0,0,0,.5);z-index:300;
  opacity:0;pointer-events:none;transition:opacity .25s}
.detail-overlay.active{opacity:1;pointer-events:auto}
.detail-popup{position:fixed;top:50%;left:50%;transform:translate(-50%,-50%) scale(.92);
  width:calc(100% - 32px);max-width:400px;max-height:85vh;
  background:var(--surface);border-radius:16px;z-index:310;
  opacity:0;pointer-events:none;transition:all .25s ease;
  overflow:hidden;box-shadow:0 16px 48px rgba(0,0,0,.2);
  display:flex;flex-direction:column}
.detail-popup.active{opacity:1;pointer-events:auto;transform:translate(-50%,-50%) scale(1)}
.detail-close{position:absolute;top:8px;right:8px;z-index:5;width:32px;height:32px;
  border-radius:50%;background:rgba(0,0,0,.5);display:flex;align-items:center;
  justify-content:center;cursor:pointer;color:#fff;border:none}
.detail-close:hover{background:rgba(0,0,0,.7)}
.detail-img-wrap{width:100%;aspect-ratio:4/3;background:#111;overflow:hidden;flex-shrink:0}
.detail-img-wrap img{width:100%;height:100%;object-fit:contain}
.detail-no-img{width:100%;aspect-ratio:4/3;background:#1a1a1a;display:flex;
  align-items:center;justify-content:center;flex-shrink:0}
.detail-no-img .material-icons-round{font-size:48px;color:#555}
.detail-body{padding:16px 20px 20px;overflow-y:auto}
.detail-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:4px}
.detail-scan-id{font-size:20px;font-weight:700}
.detail-reading-row{font-size:32px;font-weight:700;margin-bottom:12px;
  display:flex;align-items:baseline;gap:6px}
.detail-reading-row .unit{font-size:20px;color:var(--txt2);font-weight:500}
.detail-type-badge{display:inline-block;padding:3px 12px;border-radius:12px;
  font-size:12px;font-weight:600;margin-bottom:14px}
.detail-type-badge.digital{background:#E3F2FD;color:#1565C0}
.detail-type-badge.analog{background:#FFF3E0;color:#E65100}
[data-theme="dark"] .detail-type-badge.digital{background:#004D56;color:#4FC3F7}
[data-theme="dark"] .detail-type-badge.analog{background:#2e1e00;color:#FFB74D}
.detail-meta{display:flex;flex-direction:column}
.detail-row{display:flex;justify-content:space-between;align-items:center;
  padding:10px 0;border-bottom:1px solid var(--border);font-size:14px}
.detail-row:last-child{border-bottom:none}
.detail-row .dlabel{color:var(--txt3)}
.detail-row .dvalue{font-weight:500;text-align:right}