@import url('https://fonts.googleapis.com/css2?family=DM+Mono:wght@400;500&family=Manrope:wght@400;500;600;700;800&family=Noto+Sans+SC:wght@400;500;600;700;800&display=swap');
:root{--bg:#f4f6fa;--panel:#fff;--ink:#172033;--muted:#65718a;--line:#e2e7f0;--line-strong:#cfd7e5;--navy:#111c30;--blue:#315fe8;--blue-soft:#edf2ff;--mint:#0e9f83;--mint-soft:#e5f8f3;--amber:#b7791f;--amber-soft:#fff6df;--red:#c83d4b;--red-soft:#fff0f1;--shadow:0 14px 44px rgba(20,35,65,.07);--radius:18px}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--ink);font-family:Manrope,'Noto Sans SC',system-ui,-apple-system,sans-serif;font-size:14px;line-height:1.55}button,input,select{font:inherit}button{cursor:pointer}button:focus-visible,input:focus-visible{outline:3px solid #9db5ff;outline-offset:2px}a{color:inherit;text-decoration:none}.app-shell{max-width:1440px;margin:0 auto;padding:0 28px}.topbar{height:84px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line);gap:16px}.brand{display:flex;align-items:center;gap:12px}.brand-mark{width:42px;height:42px;border-radius:13px;background:var(--navy);color:#fff;display:grid;place-items:center;font-weight:800;letter-spacing:-1px;font-size:16px;box-shadow:0 6px 14px #17203320}.brand-copy{display:grid;gap:0}.brand-copy strong{font-size:15px;letter-spacing:-.3px}.brand-copy small{font-size:9px;letter-spacing:1.35px;color:var(--muted);font-weight:700}.topbar-actions{display:flex;align-items:center;gap:12px}.storage-pill{display:inline-flex;align-items:center;gap:8px;color:var(--muted);font-size:12px;padding:8px 12px;background:#fff;border:1px solid var(--line);border-radius:999px}.status-dot{width:7px;height:7px;border-radius:50%;background:var(--mint);box-shadow:0 0 0 3px var(--mint-soft)}.button{border:1px solid transparent;border-radius:10px;padding:11px 15px;display:inline-flex;align-items:center;justify-content:center;gap:8px;font-weight:700;transition:transform .15s,background .15s,border-color .15s;color:var(--ink);background:#fff}.button:hover{transform:translateY(-1px)}.button:disabled{opacity:.42;cursor:not-allowed;transform:none}.button-primary{background:var(--blue);color:#fff;box-shadow:0 6px 15px #315fe826}.button-primary:hover{background:#234ed1}.button-secondary{border-color:var(--line-strong);background:#fff}.button-quiet{background:transparent;border-color:var(--line)}.button-danger{color:var(--red);background:var(--red-soft);border-color:#ffd9dd}.button-small{padding:8px 12px;font-size:12px}.eyebrow{font-size:10px;letter-spacing:1.8px;font-weight:800;color:var(--blue);text-transform:uppercase}.page-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;padding:34px 0 24px}.page-head h1{margin:7px 0 8px;font-size:clamp(25px,3vw,36px);line-height:1.2;letter-spacing:-1.1px}.page-head p{margin:0;color:var(--muted);max-width:760px}.head-actions{display:flex;gap:9px;align-items:center;flex-wrap:wrap}.stepper{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:8px;margin:4px 0 22px}.step{display:flex;align-items:center;gap:12px;padding:13px 16px;background:#e9edf5;border:1px solid transparent;border-radius:13px;color:var(--muted)}.step.active{background:#fff;border-color:#b8c8ff;box-shadow:0 5px 18px #315fe80d;color:var(--ink)}.step.done{background:#eaf8f4;color:#116e5c}.step-num{width:28px;height:28px;display:grid;place-items:center;border-radius:9px;background:#dce2ed;font-size:12px;font-weight:800;flex-shrink:0}.step.active .step-num{background:var(--blue);color:#fff}.step.done .step-num{background:#c7eee4;color:#087c64}.step-copy{display:grid}.step-copy strong{font-size:12px}.step-copy small{font-size:10px;opacity:.8}.metrics-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px;margin-bottom:20px}.metric-card{background:var(--panel);border:1px solid var(--line);border-radius:15px;padding:16px 18px;min-width:0}.metric-label{color:var(--muted);font-size:11px;font-weight:600}.metric-value{font-size:25px;line-height:1.25;letter-spacing:-.8px;font-weight:800;margin:6px 0 2px}.metric-note{font-size:10px;color:var(--muted)}.metric-accent{color:var(--blue)}.panel{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow)}.panel-head{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:19px 21px;border-bottom:1px solid var(--line)}.panel-head h2,.panel-head h3{font-size:14px;margin:0;letter-spacing:-.2px}.panel-head p{margin:4px 0 0;color:var(--muted);font-size:11px}.panel-body{padding:20px}.tiny-badge{display:inline-flex;align-items:center;gap:5px;padding:5px 8px;background:#f0f3f8;color:#59677e;border-radius:7px;font-size:10px;font-weight:800;white-space:nowrap}.tiny-badge.blue{background:var(--blue-soft);color:var(--blue)}.tiny-badge.green{background:var(--mint-soft);color:#087c64}.notice{display:flex;gap:12px;padding:14px 16px;background:#f0f4ff;border:1px solid #dce5ff;border-radius:12px;color:#364b80;font-size:12px;margin-bottom:18px}.notice-icon{font-size:16px;line-height:1.3}.notice strong{display:block;margin-bottom:3px}.workspace{display:grid;grid-template-columns:290px minmax(0,1fr);gap:18px;align-items:start}.sidebar{overflow:hidden;position:sticky;top:14px}.sidebar-top{padding:16px;border-bottom:1px solid var(--line)}.sidebar-title{display:flex;justify-content:space-between;align-items:center;margin-bottom:12px}.sidebar-title strong{font-size:13px}.sidebar-title span{font-size:10px;color:var(--muted)}.search-wrap{position:relative}.search-wrap input{width:100%;padding:10px 12px 10px 34px;border:1px solid var(--line);border-radius:9px;background:#f8f9fc;outline:none;font-size:12px}.search-wrap input:focus{border-color:#9bb0ff;background:#fff}.search-icon{position:absolute;left:12px;top:8px;color:#8b96aa;font-size:16px}.label-list{max-height:calc(100vh - 340px);min-height:260px;overflow:auto;padding:7px}.label-item{display:flex;align-items:center;gap:9px;width:100%;text-align:left;border:1px solid transparent;background:transparent;border-radius:9px;padding:10px 9px;color:var(--ink);margin-bottom:2px}.label-item:hover{background:#f6f8fc}.label-item.active{background:var(--blue-soft);border-color:#dbe4ff}.label-item.complete .label-status{background:var(--mint-soft);color:var(--mint)}.label-status{width:24px;height:24px;border-radius:7px;display:grid;place-items:center;flex-shrink:0;background:#edf0f5;color:#7e8aa0;font-size:10px;font-weight:800}.label-name{flex:1;min-width:0;font-size:11px;font-weight:600;line-height:1.35;overflow-wrap:anywhere}.label-count{font-family:'DM Mono',monospace;font-size:10px;color:var(--muted);white-space:nowrap}.sidebar-foot{padding:13px 16px;border-top:1px solid var(--line);font-size:10px;color:var(--muted)}.gallery-panel{min-width:0}.gallery-head{display:flex;justify-content:space-between;align-items:flex-start;gap:16px}.gallery-head h2{margin:4px 0 4px;font-size:20px;letter-spacing:-.5px;overflow-wrap:anywhere}.gallery-head p{margin:0;color:var(--muted);font-size:11px}.selection-count{padding:9px 11px;border-radius:10px;background:#f4f6fa;border:1px solid var(--line);white-space:nowrap;font-size:11px;font-weight:800}.selection-count strong{color:var(--blue)}.shot-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;margin-top:18px}.shot-card{padding:0;text-align:left;border:1px solid var(--line);border-radius:13px;background:#fff;overflow:hidden;position:relative;min-width:0;transition:border .15s,box-shadow .15s,transform .15s}.shot-card:hover{border-color:#a9bbff;transform:translateY(-2px);box-shadow:0 8px 20px #1d31500d}.shot-card.selected{border:2px solid var(--blue);box-shadow:0 0 0 3px #315fe812}.image-shell{position:relative;aspect-ratio:4/3;background:linear-gradient(135deg,#eef1f7,#e5eaf2);overflow:hidden}.image-shell img{width:100%;height:100%;display:block;object-fit:contain;background:#eef1f7}.image-placeholder{position:absolute;inset:0;display:grid;place-items:center;text-align:center;padding:12px;color:#8b96aa;background:repeating-linear-gradient(135deg,#f0f3f8,#f0f3f8 9px,#e9edf4 9px,#e9edf4 18px)}.placeholder-inner{display:grid;gap:7px;justify-items:center}.placeholder-symbol{width:38px;height:31px;border:1.5px solid #aeb9cc;border-radius:7px;display:grid;place-items:center;font-size:16px;color:#8e9bb1}.placeholder-inner small{font-size:9px;max-width:150px;overflow-wrap:anywhere}.selected-mark{position:absolute;top:9px;right:9px;width:25px;height:25px;border-radius:8px;background:#fff;color:var(--blue);display:grid;place-items:center;box-shadow:0 3px 10px #10204420;font-weight:900;opacity:0}.shot-card.selected .selected-mark{opacity:1;background:var(--blue);color:#fff}.shot-meta{padding:11px 12px 12px}.shot-filename{font-family:'DM Mono',monospace;font-size:10px;color:#45536a;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.shot-submeta{display:flex;justify-content:space-between;gap:8px;margin-top:7px;color:var(--muted);font-size:10px}.shot-tag{color:#77849a}.gallery-footer{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:17px 20px;border-top:1px solid var(--line);margin-top:20px}.gallery-footer p{margin:0;font-size:11px;color:var(--muted)}.bottom-actions{display:flex;gap:9px;flex-wrap:wrap}.upload-row{display:flex;align-items:center;justify-content:space-between;gap:14px;padding:13px 15px;background:#fafbfe;border:1px dashed #cbd4e4;border-radius:12px;margin-top:18px}.upload-row strong{font-size:11px;display:block}.upload-row p{margin:3px 0 0;color:var(--muted);font-size:10px}.file-input{display:none}.upload-label{cursor:pointer;flex-shrink:0}.quiz-layout{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:18px;align-items:start}.question-panel{overflow:hidden}.question-top{display:flex;justify-content:space-between;align-items:center;padding:18px 21px;border-bottom:1px solid var(--line);gap:12px}.question-number{display:flex;align-items:center;gap:10px}.question-number strong{font-size:13px}.question-number small{display:block;color:var(--muted);font-size:10px}.progress-track{height:5px;background:#e8edf5;border-radius:99px;overflow:hidden;margin-top:13px}.progress-fill{height:100%;background:var(--blue);border-radius:99px;transition:width .2s}.question-content{padding:22px}.question-prompt{display:flex;align-items:flex-start;gap:10px;margin-bottom:18px}.question-prompt h2{font-size:18px;line-height:1.45;margin:0;letter-spacing:-.3px}.question-prompt p{margin:4px 0 0;color:var(--muted);font-size:11px}.question-image{border:1px solid var(--line);border-radius:13px;overflow:hidden;background:#f4f6fa;margin-bottom:21px;max-height:420px;display:grid;place-items:center;position:relative;min-height:220px}.question-image img{display:block;max-width:100%;max-height:420px;object-fit:contain}.question-image .image-placeholder{position:relative;min-height:250px;width:100%;background:repeating-linear-gradient(135deg,#f2f4f8,#f2f4f8 10px,#e9edf4 10px,#e9edf4 20px)}.question-image .placeholder-symbol{width:58px;height:46px;font-size:22px}.question-image .placeholder-inner small{font-size:11px}.question-image .image-placeholder[hidden]{display:none}.options-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}.option-button{display:flex;align-items:flex-start;gap:11px;padding:13px 14px;min-height:72px;text-align:left;border:1px solid var(--line);background:#fff;border-radius:12px;color:var(--ink);transition:border .15s,background .15s}.option-button:hover{border-color:#aebeff;background:#fafbff}.option-button.selected{border-color:var(--blue);background:var(--blue-soft);box-shadow:0 0 0 2px #315fe810}.option-letter{width:25px;height:25px;border:1px solid var(--line-strong);background:#f5f7fb;border-radius:8px;display:grid;place-items:center;flex-shrink:0;font-size:10px;font-weight:800;color:#5d6b82}.option-button.selected .option-letter{background:var(--blue);border-color:var(--blue);color:#fff}.option-text{font-size:12px;font-weight:600;line-height:1.45;overflow-wrap:anywhere}.quiz-controls{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:16px 21px;border-top:1px solid var(--line)}.quiz-controls-left,.quiz-controls-right{display:flex;gap:8px;align-items:center}.quiz-side{display:grid;gap:14px}.side-card{padding:17px}.side-card h3{margin:0 0 12px;font-size:12px}.side-stat{display:flex;align-items:center;justify-content:space-between;padding:9px 0;border-bottom:1px solid var(--line);font-size:11px}.side-stat:last-child{border-bottom:0;padding-bottom:0}.side-stat span{color:var(--muted)}.side-stat strong{font-family:'DM Mono',monospace;font-size:12px}.question-jump{display:grid;grid-template-columns:repeat(6,1fr);gap:5px;max-height:180px;overflow:auto}.jump-dot{border:1px solid var(--line);border-radius:6px;padding:6px 0;background:#fff;color:#77849a;font-size:9px}.jump-dot.answered{background:var(--blue-soft);border-color:#d2ddff;color:var(--blue);font-weight:800}.jump-dot.current{outline:2px solid var(--blue);outline-offset:1px}.jump-dot.correct{background:var(--mint-soft);color:#087c64;border-color:#b8ebde}.jump-dot.wrong{background:var(--red-soft);color:var(--red);border-color:#ffd7dc}.hint-text{font-size:10px;color:var(--muted);line-height:1.55}.results-hero{display:grid;grid-template-columns:1.2fr 1fr;gap:16px;margin-bottom:18px}.acc-card{background:var(--navy);color:#fff;border-radius:18px;padding:24px;position:relative;overflow:hidden;min-height:205px}.acc-card:after{content:'';position:absolute;width:230px;height:230px;border:1px solid #ffffff15;border-radius:50%;right:-65px;top:-85px;box-shadow:0 0 0 28px #ffffff06,0 0 0 58px #ffffff04}.acc-label{font-size:11px;color:#aab7d0;font-weight:700;letter-spacing:1.1px}.acc-number{font-size:clamp(44px,6vw,64px);font-weight:800;letter-spacing:-3px;line-height:1.1;margin:15px 0 8px;position:relative;z-index:1}.acc-foot{color:#bdc8dc;font-size:11px;position:relative;z-index:1}.acc-progress{height:5px;background:#ffffff20;border-radius:99px;margin-top:20px;max-width:340px;overflow:hidden}.acc-progress span{display:block;height:100%;background:#7be0c7}.result-stat-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}.result-stat{background:#fff;border:1px solid var(--line);border-radius:15px;padding:17px}.result-stat .metric-value{font-size:24px}.table-wrap{overflow:auto}.data-table{width:100%;border-collapse:collapse;font-size:11px}.data-table th{text-align:left;background:#f8f9fc;color:#77849a;font-size:10px;text-transform:uppercase;letter-spacing:.5px;padding:11px 14px;white-space:nowrap}.data-table td{padding:12px 14px;border-top:1px solid var(--line);vertical-align:top}.data-table td:first-child{font-weight:600}.data-table .label-cell{min-width:220px;max-width:400px;overflow-wrap:anywhere}.accuracy-chip{display:inline-block;padding:4px 7px;border-radius:6px;font-family:'DM Mono',monospace;font-size:10px;font-weight:800;background:#eef2f7;color:#5d6b82}.accuracy-chip.good{background:var(--mint-soft);color:#087c64}.accuracy-chip.bad{background:var(--red-soft);color:var(--red)}.filter-row{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:13px 18px;border-bottom:1px solid var(--line)}.filter-row select{border:1px solid var(--line);border-radius:8px;padding:8px 10px;background:#fff;color:var(--ink);font-size:11px}.history-list{display:grid;gap:10px}.history-item{display:flex;align-items:center;justify-content:space-between;gap:15px;padding:15px;border:1px solid var(--line);border-radius:12px;background:#fff}.history-item strong{font-size:12px;display:block}.history-item small{display:block;color:var(--muted);font-size:10px;margin-top:4px}.history-item-actions{display:flex;align-items:center;gap:8px;flex-shrink:0}.history-acc{font-family:'DM Mono',monospace;font-size:18px;font-weight:800}.empty-state{text-align:center;padding:46px 20px;color:var(--muted)}.empty-icon{width:50px;height:50px;border-radius:15px;display:grid;place-items:center;background:#edf1f8;color:#73819a;font-size:22px;margin:0 auto 12px}.empty-state strong{display:block;color:var(--ink);font-size:13px;margin-bottom:5px}.empty-state p{font-size:11px;margin:0}.footer{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:28px 0 24px;color:#8b96aa;font-size:10px}.footer span:first-child{font-weight:800;letter-spacing:.4px}.loading-state{display:grid;justify-items:center;padding:120px 0;color:var(--muted)}.spinner{width:28px;height:28px;border:3px solid #dce3f0;border-top-color:var(--blue);border-radius:50%;animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.toast-region{position:fixed;right:22px;bottom:22px;z-index:50;display:grid;gap:8px;pointer-events:none}.toast{max-width:min(390px,calc(100vw - 32px));padding:12px 15px;background:var(--navy);color:#fff;border-radius:11px;box-shadow:0 12px 35px #111c3033;font-size:12px;animation:toastIn .2s ease-out}.toast.error{background:#9f2734}.toast.success{background:#087c64}@keyframes toastIn{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}.muted{color:var(--muted)}.mono{font-family:'DM Mono',monospace}.spacer{height:16px}.section-gap{margin-top:18px}.result-actions{display:flex;flex-wrap:wrap;gap:8px}.question-review-row.correct td:first-child:before{content:'✓ ';color:var(--mint)}.question-review-row.incorrect td:first-child:before{content:'× ';color:var(--red)}.text-right{text-align:right}.nowrap{white-space:nowrap}.hidden{display:none!important}
@media(max-width:1050px){.workspace{grid-template-columns:250px minmax(0,1fr)}.quiz-layout{grid-template-columns:minmax(0,1fr) 250px}.shot-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.app-shell{padding:0 20px}.metrics-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:760px){.app-shell{padding:0 13px}.topbar{height:70px}.brand-mark{width:36px;height:36px}.brand-copy small{display:none}.storage-pill{display:none}.page-head{align-items:flex-start;flex-direction:column;padding:26px 0 18px}.head-actions{width:100%}.step{padding:10px 9px;gap:7px}.step-copy small{display:none}.step-copy strong{font-size:10px}.step-num{width:24px;height:24px}.workspace,.quiz-layout{grid-template-columns:1fr}.sidebar{position:static}.label-list{max-height:210px;min-height:0;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));align-content:start}.label-item{padding:8px 6px}.label-name{font-size:10px}.sidebar-foot{display:none}.shot-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:9px}.panel-body{padding:14px}.panel-head{padding:15px}.gallery-footer{padding:14px;align-items:flex-start;flex-direction:column}.bottom-actions{width:100%}.bottom-actions .button{flex:1}.quiz-side{grid-template-columns:1fr}.question-content{padding:15px}.question-top{padding:14px}.options-grid{grid-template-columns:1fr}.option-button{min-height:58px}.quiz-controls{padding:13px;flex-wrap:wrap}.quiz-controls-left,.quiz-controls-right{flex:1}.quiz-controls .button{padding:9px 10px}.results-hero{grid-template-columns:1fr}.acc-card{min-height:180px}.result-stat-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.history-item{align-items:flex-start;flex-direction:column}.history-item-actions{width:100%;justify-content:space-between}.upload-row{align-items:flex-start;flex-direction:column}.footer{align-items:flex-start;flex-direction:column;gap:5px}.question-jump{grid-template-columns:repeat(8,1fr)}}
@media(max-width:390px){.shot-grid{grid-template-columns:1fr}.metrics-grid{gap:8px}.metric-card{padding:12px}.metric-value{font-size:22px}.topbar-actions .button{padding:7px 9px}.step{padding:8px 6px}.step-copy strong{font-size:9px}}