:root{--bg:#f4f1eb;--surface:#fffdf9;--ink:#171717;--muted:#85827c;--line:#ded9d0;--dark:#1b1b1a;--ok:#55745f;--warn:#a37a39;--danger:#9a5954}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"SF Pro Display","Segoe UI",sans-serif}button,input,textarea{font:inherit}.app{max-width:520px;margin:auto;min-height:100vh;padding-bottom:86px}.top{padding:22px 20px 8px}.logo{font-size:17px;letter-spacing:6px;font-weight:500}.hello{font-size:29px;line-height:1.05;font-weight:700;margin-top:24px}.sub{color:var(--muted);margin-top:7px}.stats{display:grid;grid-template-columns:repeat(3,1fr);gap:9px;padding:16px}.stat,.card,.field{background:var(--surface);border:1px solid var(--line);border-radius:18px}.stat{padding:15px}.num{font-size:24px;font-weight:700}.lbl{font-size:12px;color:var(--muted);margin-top:5px}.primary{margin:0 16px;width:calc(100% - 32px);border:0;border-radius:15px;padding:16px;background:var(--dark);color:white;font-weight:700}.section{padding:20px 16px 8px;font-weight:700}.card{margin:8px 16px;padding:15px}.row{display:flex;justify-content:space-between;gap:12px}.patient{font-weight:700}.work{font-size:13px;color:var(--muted);margin-top:5px}.badge{padding:6px 9px;border-radius:9px;font-size:11px;height:max-content}.yellow{background:#f4e8cf;color:#87652d}.green{background:#e4eee7;color:#496651}.red{background:#f2dfdc;color:#874e49}.nav{position:fixed;bottom:0;left:50%;transform:translateX(-50%);width:min(520px,100%);height:72px;background:#fffdf9;border-top:1px solid var(--line);display:grid;grid-template-columns:repeat(4,1fr);padding:7px 8px calc(7px + env(safe-area-inset-bottom));z-index:5}.nav button{border:0;background:none;color:#8a8781;font-size:11px}.nav button.active{color:var(--ink);font-weight:700}.plus{font-size:22px!important}.screen{display:none}.screen.active{display:block}.back{padding:18px 20px 0;color:var(--muted)}.title{font-size:28px;font-weight:750;padding:14px 20px}.form{padding:0 16px}.field{padding:12px;margin:10px 0}.label{font-size:11px;color:var(--muted);margin-bottom:7px}.input,textarea{width:100%;border:0;outline:0;background:transparent;font-size:15px}.input{min-height:24px}textarea{min-height:100px;resize:none}.chips{display:flex;gap:7px;flex-wrap:wrap}.chip{border:1px solid var(--line);background:var(--surface);border-radius:10px;padding:9px 12px}.chip.active{background:var(--dark);color:#fff;border-color:var(--dark)}.filegrid{display:grid;grid-template-columns:repeat(3,1fr);gap:7px}.file{height:72px;border:1px dashed #c9c3b8;border-radius:12px;display:flex;align-items:center;justify-content:center;color:var(--muted);font-size:11px}.timeline{padding:0 20px}.step{display:flex;gap:12px;min-height:51px}.dot{width:13px;height:13px;border-radius:50%;background:#cbc7bf;margin-top:3px}.done .dot{background:var(--ok)}.current .dot{background:var(--warn)}.step b{font-size:13px}.step span{display:block;font-size:11px;color:var(--muted);margin-top:3px}.chat{margin:8px 16px;padding:12px;background:var(--surface);border:1px solid var(--line);border-radius:18px}.msg{padding:10px;border-radius:12px;background:#efede8;margin:6px 0;font-size:13px}.msg.me{margin-left:28px;background:#e6eee8}.outline{margin:8px 16px;width:calc(100% - 32px);border:1px solid var(--line);background:var(--surface);border-radius:14px;padding:14px;font-weight:650}.admin{background:#20201f;color:#f4f1eb;border-radius:18px;margin:8px 16px;padding:15px}.admin .muted{color:#aaa69f}

.tooth-box{background:#fff;border:1px solid var(--line);border-radius:18px;padding:14px}.jaw-label{font-size:11px;color:var(--muted);text-transform:uppercase;letter-spacing:.08em;margin:2px 0 8px}.teeth-row{display:grid;grid-template-columns:repeat(8,1fr);gap:5px}.tooth{border:1px solid #dfe2e5;background:#fafafa;border-radius:9px;min-height:38px;font-size:11px;color:#4d5257;cursor:pointer}.tooth.selected{background:#202326;color:#fff;border-color:#202326;box-shadow:0 0 0 2px #20232622}.midline{height:1px;background:#e7e8e9;margin:13px 0}.hint{font-size:12px;color:var(--muted);padding:8px 4px}.selected-groups{margin-top:9px}.selected-title{font-size:12px;color:var(--muted);margin-bottom:6px}.tooth-group{display:flex;justify-content:space-between;gap:8px;background:#f0f1f2;border-radius:11px;padding:9px 11px;margin-top:5px;font-size:12px}.tooth-group b{font-weight:650}.sheet-back{position:fixed;inset:0;background:#0004;z-index:20;display:flex;align-items:flex-end}.sheet{width:min(430px,100vw);margin:auto;background:#fff;border-radius:24px 24px 0 0;padding:10px 16px 24px;box-shadow:0 -10px 40px #0002}.sheet-handle{width:38px;height:4px;border-radius:10px;background:#d2d4d6;margin:2px auto 18px}.sheet-title{font-size:21px;font-weight:750}.sheet-sub{font-size:13px;color:var(--muted);margin:5px 0 14px}.material{width:100%;border:0;border-bottom:1px solid #eee;background:#fff;text-align:left;padding:16px 5px;font-size:15px;display:flex;justify-content:space-between;cursor:pointer}.material span{color:#aaa;font-size:20px}

/* V1.3 patient detail tabs */
.tabbar{display:grid;grid-template-columns:repeat(4,1fr);gap:6px;margin:8px 16px 0}.tab{border:1px solid var(--line);border-radius:11px;background:var(--surface);padding:11px 4px;color:var(--muted);font-size:13px}.tab.active{background:var(--dark);border-color:var(--dark);color:white}.tab-content{margin-top:8px}.task-text{font-size:14px;line-height:1.55;color:#333;padding:3px 0 12px}.detail-line{display:flex;justify-content:space-between;gap:12px;padding:9px 0;border-bottom:1px solid #eee9e0;font-size:13px}.detail-line:last-child{border-bottom:0}.detail-line span{color:var(--muted)}.chat-compose{display:flex;gap:8px;margin-top:10px}.chat-compose .input{flex:1;min-width:0;border:1px solid var(--line);border-radius:11px;padding:10px}.send{border:0;background:var(--dark);color:white;border-radius:11px;padding:0 13px}
.notice{margin:12px 16px;padding:12px 14px;border:1px solid #d9b6ae;background:#f7e9e5;border-radius:13px;font-size:12px;line-height:1.4}.notice button{margin-left:6px;border:0;border-radius:8px;padding:6px 9px;background:#242423;color:#fff}.field select{appearance:auto;min-height:28px}.hint{line-height:1.45}

/* V1.5: three-zone tooth shade selection */
.shade-field{padding:14px}.shade-types{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:6px;margin:8px 0 14px}.shade-type{border:1px solid var(--line);border-radius:11px;padding:10px 5px;background:#fffdf9;font-size:12px;font-weight:650}.shade-type.active{background:var(--dark);color:#fff;border-color:var(--dark)}.shade-layout{display:grid;grid-template-columns:minmax(0,1fr) 116px;gap:12px;align-items:start}.shade-controls>.label,.preview-caption{font-size:9px;letter-spacing:.06em;line-height:1.4;color:var(--muted);margin-bottom:8px}.zone-list{display:grid;gap:5px;margin-bottom:13px}.zone-btn{border:1px solid var(--line);border-radius:9px;padding:8px;background:#fff;text-align:left;font-size:10px;color:#57534c;display:flex;flex-direction:column;gap:3px}.zone-btn b{font-size:13px;color:var(--ink)}.zone-btn.active{border-color:#282826;box-shadow:0 0 0 1px #282826}.shade-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:5px}.shade-chip{border:1px solid var(--line);border-radius:8px;background:#fff;padding:5px 2px;font-size:10px;display:flex;align-items:center;justify-content:center;gap:3px;min-height:33px}.shade-chip.active{border-color:#252523;box-shadow:0 0 0 1px #252523;background:#f3f0e9}.shade-dot{display:inline-block;width:10px;height:10px;flex:0 0 10px;border-radius:50%;background:var(--shade);border:1px solid #0001}.tooth-preview-wrap{position:sticky;top:12px;text-align:center;background:#f6f3ed;border:1px solid #e5dfd4;border-radius:13px;padding:8px 4px}.tooth-preview{width:100%;height:auto;display:block;overflow:visible}.preview-caption{font-size:8px;margin:0}.preview-legend{display:grid;gap:5px;text-align:left;padding:2px 2px 4px}.preview-legend span{font-size:8px;color:#777168;display:flex;align-items:center;gap:4px}.preview-legend i{width:8px;height:8px;border:1px solid #0001;border-radius:50%;display:inline-block;flex:0 0 8px}.shade-summary{font-size:11px;line-height:1.5;color:#68635a;background:#f5f2ec;border-radius:10px;padding:9px;margin-top:12px;overflow-wrap:anywhere}.shade-summary b{color:#282826}.custom-shades{display:grid;gap:8px}.custom-label{display:grid;gap:5px;font-size:10px;color:var(--muted)}.custom-input{border:1px solid var(--line);border-radius:8px;background:#fff;padding:9px;font-size:11px;min-height:34px}.custom-input::placeholder{color:#aaa49a}.shade-controls .hint{padding:7px 0;font-size:10px}
@media(max-width:380px){.shade-layout{grid-template-columns:minmax(0,1fr) 98px;gap:8px}.shade-chip{font-size:9px}.preview-legend span{font-size:7px}}