*{box-sizing:border-box;margin:0;padding:0}
body{font-family:'Segoe UI',Arial,sans-serif;background:#0d1117;color:#e6edf3;line-height:1.6}
body::before{content:'';position:fixed;inset:0;background:url('images/logo-white.svg') center/80vw no-repeat;opacity:0.035;pointer-events:none;z-index:0}
#login-screen,#site{position:relative;z-index:1}

/* ── LOGIN ── */
#login-screen{display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:100vh;background:linear-gradient(135deg,#0d1117 0%,#1a2332 100%)}
.login-box{display:flex;flex-direction:column;align-items:center;text-align:center;width:100%}
.login-box img{height:60px;margin-bottom:24px}
.login-box h1{font-size:20px;color:#fff;margin-bottom:6px}
.login-box p{font-size:13px;color:#8b949e;margin-bottom:28px}
#clerk-sign-in{display:flex;justify-content:center}

/* ── SITE SHELL ── */
#site{display:none}
.header{background:linear-gradient(135deg,#1a2332 0%,#0d1117 100%);border-bottom:2px solid #21a1f1;padding:16px 40px;display:flex;align-items:center;justify-content:space-between}
.header-left{display:flex;align-items:center;gap:18px}
.header-left img{height:52px}
.header-divider{width:1px;height:40px;background:#21272e}
.header-text .label{font-size:10px;letter-spacing:3px;text-transform:uppercase;color:#21a1f1;margin-bottom:2px}
.header-text .title{font-size:18px;font-weight:700;color:#fff}
.header-right{display:flex;align-items:center;gap:12px}
.btn-logout{background:transparent;border:1px solid #30363d;color:#8b949e;font-size:11px;padding:6px 14px;border-radius:6px;cursor:pointer}
.btn-logout:hover{border-color:#f85149;color:#f85149}

/* ── LIBRARY VIEW ── */
#library-view{max-width:1100px;margin:0 auto;padding:36px 32px}
.lib-header{display:flex;align-items:flex-end;justify-content:space-between;margin-bottom:24px;flex-wrap:wrap;gap:12px}
.lib-header h2{font-size:22px;font-weight:700}
.lib-header p{font-size:13px;color:#8b949e;margin-top:2px}
.search-bar{background:#161b22;border:1px solid #30363d;border-radius:8px;padding:8px 14px;color:#e6edf3;font-size:13px;width:220px;outline:none}
.search-bar:focus{border-color:#21a1f1}

/* Tag filters */
.tag-filters{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:28px}
.tag-btn{background:#161b22;border:1px solid #30363d;border-radius:20px;padding:5px 14px;font-size:12px;color:#8b949e;cursor:pointer;transition:all .15s}
.tag-btn:hover{border-color:#21a1f1;color:#21a1f1}
.tag-btn.active{border-color:#21a1f1;color:#21a1f1;background:#0d1f35}
.tag-btn.active.red{border-color:#f85149;color:#f85149;background:#1f0d0d}
.tag-btn.active.green{border-color:#3fb950;color:#3fb950;background:#0d1f10}

/* Case grid */
.cases-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:18px}
.case-card{background:#161b22;border:1px solid #21272e;border-radius:12px;overflow:hidden;cursor:pointer;transition:border-color .15s,transform .15s}
.case-card:hover{border-color:#21a1f1;transform:translateY(-2px)}
.case-thumb{background:#000;height:160px;display:flex;align-items:center;justify-content:center;position:relative;overflow:hidden}
.case-thumb img{width:100%;height:100%;object-fit:cover}
.case-thumb-placeholder{text-align:center;color:#21272e}
.case-thumb-placeholder svg{width:48px;height:48px}
.case-num-badge{position:absolute;top:10px;left:10px;background:rgba(0,0,0,.7);border:1px solid #30363d;border-radius:4px;padding:2px 8px;font-size:10px;color:#8b949e}
.case-meta{padding:16px}
.case-meta h3{font-size:15px;font-weight:700;color:#fff;margin-bottom:6px}
.case-meta p{font-size:12px;color:#8b949e;margin-bottom:10px}
.case-tags{display:flex;gap:6px;flex-wrap:wrap}
.ctag{border-radius:10px;padding:2px 10px;font-size:10px;border:1px solid}
.ctag.red{border-color:#f85149;color:#f85149}
.ctag.blue{border-color:#21a1f1;color:#21a1f1}
.ctag.green{border-color:#3fb950;color:#3fb950}
.ctag.yellow{border-color:#e3b341;color:#e3b341}
.empty-state{grid-column:1/-1;text-align:center;color:#484f58;padding:60px 0;font-size:14px}

/* ── CASE DETAIL VIEW ── */
#case-view{display:none}
.case-nav{background:#161b22;border-bottom:1px solid #21272e;padding:12px 40px;display:flex;align-items:center;gap:12px;font-size:12px;color:#8b949e}
.case-nav a{color:#21a1f1;cursor:pointer;text-decoration:none}
.case-nav a:hover{text-decoration:underline}
.case-content{max-width:980px;margin:0 auto;padding:40px 32px 60px}

/* Reuse all case styling from original */
.section-label{display:flex;align-items:center;gap:12px;margin:36px 0 16px}
.section-label .num{background:#21a1f1;color:#000;font-weight:700;font-size:11px;width:24px;height:24px;border-radius:50%;display:flex;align-items:center;justify-content:center;flex-shrink:0}
.section-label h2{font-size:13px;font-weight:700;text-transform:uppercase;letter-spacing:2px;color:#21a1f1}
.divider{flex:1;height:1px;background:#21272e}
.card{background:#161b22;border:1px solid #21272e;border-radius:10px;padding:22px 26px;margin-bottom:14px}
.card p{color:#c9d1d9;font-size:15px}
.card p+p{margin-top:10px}
.vitals-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(120px,1fr));gap:12px;margin-bottom:14px}
.vital-box{background:#161b22;border:1px solid #21272e;border-radius:8px;padding:14px 16px;text-align:center}
.vital-box .val{font-size:22px;font-weight:700;color:#f85149}
.vital-box .val.yellow{color:#e3b341}
.vital-box .lbl{font-size:10px;letter-spacing:1px;text-transform:uppercase;color:#8b949e;margin-top:2px}
.echo-compare{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-bottom:14px}
.echo-panel{background:#161b22;border:1px solid #21272e;border-radius:10px;overflow:hidden}
.echo-panel .ep-header{padding:12px 18px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid #21272e}
.echo-panel.before .ep-header{border-left:3px solid #f85149}
.echo-panel.after .ep-header{border-left:3px solid #3fb950}
.ep-header .ep-title{font-size:12px;font-weight:700;text-transform:uppercase;letter-spacing:1px}
.echo-panel.before .ep-title{color:#f85149}
.echo-panel.after .ep-title{color:#3fb950}
.ep-header .ep-time{font-size:11px;color:#8b949e}
.echo-screen{background:#000;aspect-ratio:4/3;display:flex;align-items:center;justify-content:center;overflow:hidden}
.echo-screen img{width:100%;height:100%;object-fit:cover}
.echo-placeholder{text-align:center;color:#30363d}
.echo-placeholder svg{width:64px;height:64px;opacity:.4;margin-bottom:8px}
.echo-placeholder p{font-size:11px;color:#8b949e}
.echo-data{padding:14px 18px}
.echo-row{display:flex;justify-content:space-between;align-items:center;padding:5px 0;border-bottom:1px solid #0d1117;font-size:13px}
.echo-row:last-child{border-bottom:none}
.echo-row .param{color:#8b949e}
.echo-row .val-before{color:#f85149;font-weight:700}
.echo-row .val-after{color:#3fb950;font-weight:700}
.vti-visual{background:#161b22;border:1px solid #21272e;border-radius:10px;padding:24px 28px;margin-bottom:14px;text-align:center}
.vti-visual h3{font-size:11px;text-transform:uppercase;letter-spacing:2px;color:#8b949e;margin-bottom:20px}
.vti-bar-wrap{display:flex;align-items:center;justify-content:center;gap:20px;flex-wrap:wrap}
.vti-item{text-align:center}
.vti-item .vti-num{font-size:42px;font-weight:800;line-height:1}
.vti-item .vti-unit{font-size:14px;color:#8b949e;margin-top:2px}
.vti-item .vti-label{font-size:11px;text-transform:uppercase;letter-spacing:1px;margin-top:6px}
.vti-item.before .vti-num,.vti-item.before .vti-label{color:#f85149}
.vti-item.after .vti-num,.vti-item.after .vti-label{color:#3fb950}
.vti-arrow{font-size:32px;color:#21a1f1;display:flex;flex-direction:column;align-items:center;gap:4px}
.vti-arrow .pct{font-size:13px;font-weight:700;color:#3fb950;background:rgba(63,185,80,.1);border:1px solid rgba(63,185,80,.3);border-radius:4px;padding:2px 8px}
.vti-cutoff{margin-top:16px;font-size:12px;color:#8b949e;background:#0d1117;border-radius:6px;padding:8px 16px;display:inline-block}
.vti-cutoff span{color:#e3b341;font-weight:600}
.timeline{position:relative;padding-left:28px}
.timeline::before{content:'';position:absolute;left:8px;top:6px;bottom:6px;width:2px;background:linear-gradient(to bottom,#f85149,#e3b341,#21a1f1,#3fb950)}
.tl-item{position:relative;margin-bottom:20px}
.tl-dot{position:absolute;left:-24px;top:5px;width:12px;height:12px;border-radius:50%;border:2px solid #0d1117}
.tl-item .tl-title{font-weight:700;font-size:14px;color:#e6edf3;margin-bottom:4px}
.tl-item .tl-body{font-size:13px;color:#8b949e}
.tl-item .tl-drug{display:inline-block;background:#21272e;border-radius:4px;padding:1px 8px;font-size:12px;font-family:monospace;margin-right:4px;margin-top:4px}
.tp-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-bottom:14px}
.tp-card{background:#161b22;border:1px solid #21272e;border-left:3px solid #21a1f1;border-radius:8px;padding:16px 18px}
.tp-card .tp-num{font-size:10px;letter-spacing:1px;text-transform:uppercase;color:#21a1f1;margin-bottom:6px}
.tp-card .tp-text{font-size:13px;color:#c9d1d9;line-height:1.6}
.tp-card strong{color:#e6edf3}
.patho-box{background:#161b22;border:1px solid #21272e;border-radius:10px;padding:22px 26px;margin-bottom:14px}
.patho-flow{display:flex;align-items:center;flex-wrap:wrap;gap:0;margin-top:12px}
.pf-step{background:#0d1117;border:1px solid #30363d;border-radius:6px;padding:8px 14px;font-size:12px;color:#c9d1d9;text-align:center;line-height:1.4}
.pf-arrow{color:#21a1f1;font-size:18px;padding:0 8px;flex-shrink:0}
.site-footer{border-top:1px solid #21272e;padding:20px 40px;display:flex;justify-content:space-between;font-size:11px;color:#484f58}

@media(max-width:640px){
  .echo-compare,.tp-grid{grid-template-columns:1fr}
  .header{padding:14px 16px}
  .case-content,.lib-header,#library-view{padding-left:16px;padding-right:16px}
  .patho-flow{flex-direction:column}
  .pf-arrow{transform:rotate(90deg)}
}