:root{--bg:#0a0e1a;--bg2:#111827;--card:#1a2236;--card-hover:#1e2840;--border:#2a3550;--text:#e8ecf4;--text2:#94a3b8;--text3:#64748b;--accent:#3b82f6;--accent2:#60a5fa;--green:#22c55e;--green-bg:rgba(34,197,94,.1);--yellow:#eab308;--yellow-bg:rgba(234,179,8,.1);--orange:#f97316;--orange-bg:rgba(249,115,22,.1);--red:#ef4444;--red-bg:rgba(239,68,68,.1);--purple:#a855f7;--radius:12px}*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Inter,Roboto,sans-serif;background:var(--bg);color:var(--text);line-height:1.6;min-height:100vh}.container{max-width:1200px;margin:0 auto;padding:0 20px}.header{background:var(--bg2);border-bottom:1px solid var(--border);padding:16px 0}.header-inner{display:flex;justify-content:space-between;align-items:center}.logo{font-size:22px;font-weight:800}.logo span{color:var(--accent)}.logo-sub{font-size:12px;color:var(--text3);margin-top:2px}.header-badges{display:flex;gap:8px}.h-badge{padding:4px 12px;border-radius:20px;font-size:11px;font-weight:600;background:rgba(59,130,246,.1);color:var(--accent2)}.hero{text-align:center;padding:50px 0 30px}.hero h1{font-size:38px;font-weight:800;line-height:1.2;background:linear-gradient(135deg,#e8ecf4,#60a5fa);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.hero p{color:var(--text2);font-size:16px;margin-top:12px;max-width:600px;margin-left:auto;margin-right:auto}.scanner{max-width:800px;margin:0 auto 40px;padding:0 20px}.scan-tabs{display:flex;gap:4px;margin-bottom:16px}.scan-tab{padding:8px 20px;border-radius:8px 8px 0 0;font-size:13px;font-weight:600;background:var(--card);color:var(--text3);border:1px solid var(--border);border-bottom:none;cursor:pointer;transition:.2s}.scan-tab:hover{color:var(--text2)}.scan-tab.active{background:var(--bg2);color:var(--accent2);border-color:var(--accent)}.scan-box{background:var(--bg2);border:1px solid var(--border);border-radius:0 var(--radius) var(--radius) var(--radius);padding:24px}.scan-input-row{display:flex;gap:12px}.scan-input{flex:1 1;padding:14px 18px;border-radius:10px;border:2px solid var(--border);background:var(--card);color:var(--text);font-size:15px;outline:none;transition:.2s}.scan-input:focus{border-color:var(--accent)}.scan-input::placeholder{color:var(--text3)}.scan-textarea{width:100%;min-height:160px;padding:14px 18px;border-radius:10px;border:2px solid var(--border);background:var(--card);color:var(--text);font-size:13px;font-family:monospace;outline:none;resize:vertical;transition:.2s}.scan-textarea:focus{border-color:var(--accent)}.scan-btn{padding:14px 32px;border-radius:10px;border:none;font-size:15px;font-weight:700;background:linear-gradient(135deg,#3b82f6,#2563eb);color:#fff;cursor:pointer;transition:.2s;white-space:nowrap}.scan-btn:hover{transform:translateY(-1px);box-shadow:0 4px 20px rgba(59,130,246,.3)}.scan-btn:disabled{opacity:.5;cursor:not-allowed;transform:none;box-shadow:none}.scan-options{display:flex;gap:20px;margin-top:14px;flex-wrap:wrap}.scan-option{display:flex;align-items:center;gap:6px;font-size:13px;color:var(--text2);cursor:pointer}.scan-option input{accent-color:var(--accent)}.results{max-width:1000px;margin:0 auto;padding:0 20px 60px}.score-card{background:var(--bg2);border:1px solid var(--border);border-radius:var(--radius);padding:30px;text-align:center;margin-bottom:24px}.score-ring{width:140px;height:140px;margin:0 auto 16px;position:relative}.score-ring svg{width:100%;height:100%;transform:rotate(-90deg)}.score-ring circle{fill:none;stroke-width:10;stroke-linecap:round}.score-ring .bg-ring{stroke:var(--border)}.score-ring .score-arc{transition:stroke-dashoffset 1s ease}.score-number{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);font-size:36px;font-weight:800}.score-label{font-size:14px;color:var(--text2);margin-bottom:4px}.score-url{font-size:13px;color:var(--text3);word-break:break-all}.summary-grid{display:grid;grid-template-columns:repeat(4,1fr);grid-gap:14px;gap:14px;margin-bottom:24px}.summary-card{background:var(--bg2);border:1px solid var(--border);border-radius:var(--radius);padding:16px 20px;text-align:center}.summary-count{font-size:28px;font-weight:800}.summary-label{font-size:11px;color:var(--text3);text-transform:uppercase;letter-spacing:.5px;margin-top:4px}.issue-group{margin-bottom:20px}.issue-group-header{display:flex;align-items:center;gap:10px;padding:12px 16px;background:var(--bg2);border:1px solid var(--border);border-radius:var(--radius) var(--radius) 0 0;cursor:pointer;-webkit-user-select:none;-moz-user-select:none;user-select:none}.issue-group-header h3{font-size:14px;font-weight:600;flex:1 1}.issue-count{padding:2px 10px;border-radius:12px;font-size:11px;font-weight:700}.issue-group-body{border:1px solid var(--border);border-top:none;border-radius:0 0 var(--radius) var(--radius)}.issue-item{padding:16px 20px;border-bottom:1px solid var(--border)}.issue-item:last-child{border-bottom:none}.issue-title{font-size:13px;font-weight:600;margin-bottom:4px}.issue-desc{font-size:12px;color:var(--text2);margin-bottom:8px}.issue-meta{display:flex;gap:8px;flex-wrap:wrap}.issue-tag{padding:2px 8px;border-radius:4px;font-size:10px;font-weight:600}.issue-element{padding:8px 12px;background:var(--card);font-size:11px;font-family:monospace;color:var(--text2);overflow-x:auto;white-space:pre-wrap;word-break:break-all}.issue-element,.issue-fix{margin-top:8px;border-radius:6px}.issue-fix{padding:10px 14px;background:var(--green-bg);border-left:3px solid var(--green);font-size:12px;color:var(--green)}.severity-critical{color:var(--red)}.severity-critical-bg{background:var(--red-bg);color:var(--red)}.severity-serious{color:var(--orange)}.severity-serious-bg{background:var(--orange-bg);color:var(--orange)}.severity-moderate{color:var(--yellow)}.severity-moderate-bg{background:var(--yellow-bg);color:var(--yellow)}.severity-minor,.severity-minor-bg{color:var(--accent2)}.severity-minor-bg{background:rgba(96,165,250,.1)}.scanning{text-align:center;padding:60px 20px}.scan-spinner{width:48px;height:48px;border:4px solid var(--border);border-top-color:var(--accent);border-radius:50%;animation:spin .8s linear infinite;margin:0 auto 16px}@keyframes spin{to{transform:rotate(1turn)}}.error-box{background:var(--red-bg);border:1px solid rgba(239,68,68,.3);border-radius:var(--radius);padding:16px 20px;margin-bottom:20px;color:var(--red);font-size:13px}.export-bar{display:flex;gap:10px;justify-content:flex-end;margin-bottom:20px}.export-btn{padding:8px 18px;border-radius:8px;border:1px solid var(--border);background:var(--card);color:var(--text);font-size:12px;font-weight:600;cursor:pointer;transition:.2s}.export-btn:hover{border-color:var(--accent);color:var(--accent)}.footer{background:var(--bg2);border-top:1px solid var(--border);padding:24px 0;text-align:center;font-size:12px;color:var(--text3)}.footer a{color:var(--accent2);text-decoration:none}.footer a:hover{text-decoration:underline}.features{display:grid;grid-template-columns:repeat(3,1fr);grid-gap:16px;gap:16px;max-width:1000px;margin:0 auto 50px;padding:0 20px}.feature-card{background:var(--bg2);border:1px solid var(--border);border-radius:var(--radius);padding:24px;text-align:center;transition:.2s}.feature-card:hover{border-color:var(--accent);transform:translateY(-2px)}.feature-icon{font-size:28px;margin-bottom:10px}.feature-card h3{font-size:14px;font-weight:700;margin-bottom:6px}.feature-card p{font-size:12px;color:var(--text2)}.mode-selector{background:var(--bg2);border-bottom:1px solid var(--border);padding:16px 0;margin-bottom:40px}.mode-selector .container{display:flex;gap:12px}.mode-btn{padding:10px 24px;border-radius:8px;border:1px solid var(--border);background:var(--card);color:var(--text2);font-size:13px;font-weight:600;cursor:pointer;transition:.2s}.mode-btn:hover{border-color:var(--accent);color:var(--text)}.mode-btn.active{background:var(--accent);border-color:var(--accent);color:#fff}.contrast-container{padding:40px 0 60px}.contrast-card{background:var(--bg2);border:1px solid var(--border);border-radius:var(--radius);padding:32px;max-width:600px;margin:0 auto}.contrast-inputs{display:grid;grid-template-columns:1fr 1fr;grid-gap:24px;gap:24px;margin-bottom:28px}.contrast-input-group{display:flex;flex-direction:column}.contrast-input-group label{font-size:12px;font-weight:600;color:var(--text3);text-transform:uppercase;letter-spacing:.5px;margin-bottom:10px}.color-input-wrapper{display:flex;gap:10px;align-items:center}.color-picker{width:50px;height:50px;border-radius:8px;border:2px solid var(--border);cursor:pointer}.color-picker:hover{border-color:var(--accent)}.color-hex{flex:1 1;padding:10px 12px;border-radius:8px;border:2px solid var(--border);background:var(--card);color:var(--text);font-size:12px;font-family:monospace;outline:none;transition:.2s}.color-hex:focus{border-color:var(--accent)}.contrast-preview{margin-bottom:24px}.contrast-ratio{text-align:center;margin-bottom:28px}.ratio-value{font-size:36px;font-weight:800;color:var(--accent2)}.ratio-label{font-size:12px;color:var(--text3);margin-top:4px}.contrast-results{display:grid;grid-gap:16px;gap:16px}.contrast-level{background:var(--card);border:1px solid var(--border);border-radius:8px;padding:16px}.level-title{font-size:12px;font-weight:600;color:var(--text2);margin-bottom:10px}.level-reqs{display:flex;flex-direction:column;gap:6px}.requirement{font-size:13px;font-weight:600;padding:6px 10px;border-radius:4px}.requirement.pass{color:var(--green);background:var(--green-bg)}.requirement.fail{color:var(--red);background:var(--red-bg)}.result-tabs{display:flex;gap:8px;margin-bottom:20px;border-bottom:1px solid var(--border)}.result-tab{padding:12px 20px;background:transparent;color:var(--text3);font-size:13px;font-weight:600;cursor:pointer;transition:.2s;border:none;border-bottom:2px solid transparent;margin-bottom:-1px}.result-tab:hover{color:var(--text2)}.result-tab.active{color:var(--accent2);border-bottom-color:var(--accent2)}.structure-view{background:var(--bg2);border:1px solid var(--border);border-radius:var(--radius);padding:20px;margin-bottom:20px}.heading-tree{margin-bottom:24px}.heading-item{padding:8px 12px;color:var(--text);margin-bottom:6px;border-left:3px solid var(--accent2)}.heading-item,.landmark-item{background:var(--card);border-radius:6px;font-size:13px}.landmark-item{display:flex;align-items:center;gap:10px;padding:10px 12px;margin-bottom:8px}.landmark-tag{display:inline-block;padding:2px 8px;background:rgba(168,85,247,.1);color:var(--purple);border-radius:4px;font-size:11px;font-weight:600}.landmark-label{color:var(--text2)}.screenreader-view{background:var(--bg2);border:1px solid var(--border);border-radius:var(--radius);padding:20px;margin-bottom:20px}.screenreader-text{background:var(--card);border:1px solid var(--border);border-radius:8px;padding:16px;font-family:Monaco,Courier New,monospace;font-size:12px;color:var(--text2);line-height:1.6;overflow-x:auto;white-space:pre-wrap;word-wrap:break-word;max-height:400px;overflow-y:auto}.history-section{background:var(--bg2);border-top:1px solid var(--border);border-bottom:1px solid var(--border);padding:30px 0;margin:40px 0}.history-section h2{font-size:18px;margin-bottom:20px}.history-list{display:flex;flex-direction:column;gap:12px}.history-item{background:var(--card);border:1px solid var(--border);border-radius:8px;padding:16px;cursor:pointer;transition:.2s}.history-item:hover{border-color:var(--accent);background:var(--card-hover)}.history-url{font-size:13px;font-weight:600;color:var(--text);margin-bottom:8px;word-break:break-all}.history-meta{display:flex;gap:16px;flex-wrap:wrap;font-size:12px}.history-score{font-weight:700}.history-date,.history-issues{color:var(--text3)}.copy-link-btn{margin-left:auto}@media (max-width:768px){.hero h1{font-size:26px}.scan-input-row{flex-direction:column}.summary-grid{grid-template-columns:repeat(2,1fr)}.contrast-inputs,.features{grid-template-columns:1fr}.mode-selector .container{flex-direction:column}.result-tabs{flex-wrap:wrap}}