*{margin:0;padding:0;box-sizing:border-box}
:root{
  --bg:#FAFAF8;--surface:#FFF;--surface-raised:#FDFCFA;--surface-alt:#F4F3F0;--surface-hover:#EFEEE9;
  --border:#E5E3DD;--border-light:#EDECE8;
  --text:#1A1A18;--text-secondary:#6B6960;--text-tertiary:#9C9A90;
  --accent:#0F6E56;--accent-light:#E1F5EE;--accent-dark:#085041;--accent-mid:#1D9E75;
  --warm:#F8F0E3;--warm-text:#7A6840;--warm-border:#E8DCC8;
  --web-accent:#B07D1E;--web-bg:#FBF4E4;--web-border:#E8D9B4;
  --danger:#9A3131;--danger-bg:#FEF1F0;--danger-border:#F0D4D2;
  --compare:#185FA5;--explore:#854F0B;--local:#993556;
  --disease:#7C3AED;--disease-light:#EDE9FE;--disease-dark:#5B21B6;
  --serif:'Source Serif 4',Georgia,serif;--sans:'DM Sans',-apple-system,sans-serif;--mono:'JetBrains Mono',monospace;
}
body.dark{
  --bg:#141416;--surface:#1C1C20;--surface-raised:#202024;--surface-alt:#28282E;--surface-hover:#32323A;
  --border:#38383F;--border-light:#2E2E35;
  --text:#E4E2DB;--text-secondary:#A5A39B;--text-tertiary:#706E67;
  --accent:#3DB88E;--accent-light:#1A2E26;--accent-dark:#5DD4A8;--accent-mid:#4CC2A3;
  --warm:#262018;--warm-text:#C8A870;--warm-border:#36302A;
  --web-accent:#D4A030;--web-bg:#2A2518;--web-border:#3A3220;
  --danger:#E05050;--danger-bg:#2A1A1A;--danger-border:#3A2828;
  --compare:#5B9EE0;--explore:#D4A030;--local:#D06090;
  --disease:#A78BFA;--disease-light:#2D1B69;--disease-dark:#C4B5FD;
}
html{scroll-behavior:smooth}
body{font-family:var(--sans);background:var(--bg);color:var(--text);-webkit-font-smoothing:antialiased;height:100vh;height:100dvh;overflow:hidden;display:flex;flex-direction:column;font-size:14px;line-height:1.55;transition:background .3s,color .3s}
.container{max-width:960px;margin:0 auto;padding:0 24px;width:100%}
.container-wide{max-width:1200px;margin:0 auto;padding:0 24px;width:100%}

/* HEADER */
header.app-header{border-bottom:1px solid var(--border);background:var(--surface);position:sticky;top:0;z-index:50;transition:background .3s,border-color .3s}
.header-inner{padding:18px 0 14px;display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap}
.brand{display:flex;align-items:baseline;gap:12px;cursor:pointer}
.brand h1{font-family:var(--serif);font-size:24px;font-weight:500;letter-spacing:-.3px;color:var(--text);transition:color .15s}
.brand h1:hover{color:var(--accent)}
.header-right{display:flex;align-items:center;gap:16px}
.header-meta{text-align:right;font-size:12px;color:var(--text-tertiary);line-height:1.6}
.header-meta a{color:var(--accent);text-decoration:none}
.theme-toggle{background:var(--surface-alt);border:1px solid var(--border);border-radius:20px;padding:5px 12px;font-size:11px;font-family:var(--sans);color:var(--text-secondary);cursor:pointer;transition:all .2s;display:flex;align-items:center;gap:5px}
.theme-toggle:hover{border-color:var(--accent);color:var(--text)}

/* NAV */
nav.main-nav{background:var(--surface);border-bottom:1px solid var(--border);position:sticky;top:71px;z-index:49;transition:background .3s,border-color .3s}
.nav-inner{display:flex;gap:0;overflow-x:auto;scrollbar-width:none}
.nav-inner::-webkit-scrollbar{display:none}
.nav-item{display:inline-block;padding:11px 16px;font-size:13px;color:var(--text-secondary);text-decoration:none;border-bottom:2px solid transparent;transition:all .15s;font-weight:400;white-space:nowrap;background:none;border-left:none;border-right:none;border-top:none;font-family:var(--sans);cursor:pointer}
.nav-item:hover{color:var(--text);background:var(--surface-alt)}
.nav-item.active{color:var(--accent-dark);border-bottom-color:var(--accent);font-weight:500}

/* MAIN */
main{flex:1;display:flex;flex-direction:column;min-height:0}
.tab-panel.active#tab-scenario{display:flex;flex-direction:column;overflow:hidden}
#scenario-landing{flex:1;min-height:0;overflow-y:auto}
#scenario-conversation{display:flex;flex-direction:column;flex:1;min-height:0}
body:has(#scenario-conversation:not(.hidden)) footer.app-footer{display:none}
.tab-panel{display:none}
.tab-panel.active{display:block;flex:1;min-height:0;overflow-y:auto;animation:fadeIn .3s ease}
@keyframes fadeIn{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:translateY(0)}}

/* HERO */
.scenario-landing{padding:48px 0 40px}
.hero{text-align:center;margin-bottom:36px}
.hero h2{font-family:var(--serif);font-size:30px;font-weight:400;line-height:1.35;color:var(--text);max-width:620px;margin:0 auto 14px;letter-spacing:-.3px}
.hero p{font-size:15px;color:var(--text-secondary);max-width:540px;margin:0 auto;line-height:1.6}

/* SETUP PANEL */
.setup-panel{background:var(--surface);border:1px solid var(--border);border-radius:10px;padding:22px 26px 18px;margin-bottom:28px;transition:background .3s,border-color .3s}
.setup-row{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:18px;margin-bottom:14px}
@media(max-width:720px){.setup-row{grid-template-columns:1fr 1fr}}
.setup-group label{display:block;font-size:10.5px;font-weight:600;color:var(--text-tertiary);letter-spacing:.6px;text-transform:uppercase;margin-bottom:8px}
.mode-toggle{display:flex;border:1px solid var(--border);border-radius:6px;overflow:hidden;background:var(--surface-alt);cursor:pointer;transition:border-color .3s}
.mode-toggle span{flex:1;padding:9px 8px;font-size:12.5px;text-align:center;transition:all .15s;color:var(--text-secondary);border-right:1px solid var(--border);user-select:none}
.mode-toggle span:last-child{border-right:none}
.mode-toggle span.active{background:var(--accent);color:#fff;font-weight:500}
.select-wrapper{position:relative}
.select-wrapper select{width:100%;padding:9px 30px 9px 12px;font-size:13px;font-family:var(--sans);border:1px solid var(--border);border-radius:6px;background:var(--surface);color:var(--text);appearance:none;cursor:pointer;transition:border-color .3s,background .3s,color .3s}
.select-wrapper select:focus{outline:none;border-color:var(--accent)}
.select-wrapper::after{content:'▾';position:absolute;right:12px;top:50%;transform:translateY(-50%);color:var(--text-tertiary);font-size:10px;pointer-events:none}
.setup-meta{display:flex;justify-content:space-between;align-items:center;padding-top:13px;border-top:1px solid var(--border-light);font-size:11.5px;color:var(--text-tertiary);flex-wrap:wrap;gap:8px}
.dot{width:6px;height:6px;border-radius:50%;background:var(--accent-mid);display:inline-block}
.evidence-count{display:flex;align-items:center;gap:6px}

/* ENTRY CARDS */
.entry-section{margin-bottom:36px}
.entry-section h3{font-family:var(--serif);font-size:15px;font-weight:400;color:var(--text-secondary);margin-bottom:14px}
.entry-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}
@media(max-width:720px){.entry-grid{grid-template-columns:1fr}}
.entry-card{background:var(--surface);border:1px solid var(--border);border-radius:8px;padding:17px 19px;cursor:pointer;transition:all .15s;text-align:left;font-family:var(--sans)}
.entry-card:hover{border-color:var(--accent);box-shadow:0 2px 8px rgba(15,110,86,.08);transform:translateY(-1px)}
.entry-type{font-size:10px;font-weight:600;letter-spacing:.5px;text-transform:uppercase;margin-bottom:8px}
.entry-type.scenario{color:var(--accent)}.entry-type.explore{color:var(--explore)}.entry-type.compare{color:var(--compare)}.entry-type.local{color:var(--local)}
.entry-title{font-size:14px;font-weight:500;line-height:1.4;color:var(--text);margin-bottom:6px}
.entry-desc{font-size:12.5px;color:var(--text-tertiary);line-height:1.5}

/* INPUT */
.btn-primary{padding:14px 26px;background:var(--accent);color:#fff;border:none;border-radius:8px;font-family:var(--sans);font-size:14px;font-weight:500;cursor:pointer;transition:background .15s;white-space:nowrap}
.btn-primary:hover{background:var(--accent-dark)}
.btn-secondary{padding:10px 16px;background:transparent;color:var(--text-secondary);border:1px solid var(--border);border-radius:6px;font-family:var(--sans);font-size:13px;cursor:pointer;transition:all .15s}
.btn-secondary:hover{background:var(--surface-alt);color:var(--text)}
.btn-secondary:disabled{opacity:.45;cursor:not-allowed}
.btn-secondary:disabled:hover{background:transparent;color:var(--text-secondary)}

/* EVIDENCE STRIP */
.evidence-strip{background:var(--warm);border:1px solid var(--warm-border);border-radius:8px;padding:15px 18px;margin-bottom:28px;transition:background .3s,border-color .3s}
.evidence-strip h4{font-size:10.5px;font-weight:600;letter-spacing:.5px;text-transform:uppercase;color:var(--warm-text);margin-bottom:10px}
.evidence-tags{display:flex;flex-wrap:wrap;gap:6px}
.evidence-tags span{font-size:11.5px;padding:4px 10px;background:rgba(255,255,255,.75);border:1px solid var(--warm-border);border-radius:4px;color:var(--warm-text);cursor:pointer;transition:background .15s}
body.dark .evidence-tags span{background:rgba(255,255,255,.08)}
.evidence-tags span:hover{background:rgba(255,255,255,1)}
body.dark .evidence-tags span:hover{background:rgba(255,255,255,.15)}

/* CONVERSATION */
.session-info{font-size:11px;color:var(--text-tertiary)}
/* Conversation is two columns: the transcript scrolls on the left, session
   context and actions sit in a static panel on the right. Below 1000px the
   panel reflows into a single strip above the transcript. */
.session-layout{display:flex;gap:36px;flex:1;min-height:0}
.session-main{display:flex;flex-direction:column;flex:1;min-width:0}
.chat-scroll{flex:1;overflow-y:auto;min-height:0}
.chat-scroll{scrollbar-width:none;-ms-overflow-style:none}
.chat-scroll::-webkit-scrollbar{display:none}
.chat-area{padding:24px 0 8px}
.session-panel{width:220px;flex-shrink:0;display:flex;flex-direction:column;justify-content:space-between;padding:34px 0 34px}
.panel-context{background:var(--surface);border:1px solid var(--border);border-radius:10px;overflow:hidden;transition:background .3s,border-color .3s}
.session-info{font-size:12.5px;color:var(--text-secondary);padding:13px 16px;border-bottom:1px solid var(--border-light)}
.panel-settings{display:grid;grid-template-columns:auto 1fr;gap:13px 10px;margin:0;padding:16px;font-size:14px}
.panel-settings dt{color:var(--text-tertiary)}
.panel-settings dd{margin:0;text-align:right;color:var(--text)}
.panel-actions{display:flex;flex-direction:column;gap:8px}
.panel-btn{display:flex;align-items:center;gap:10px;width:100%;padding:13px 16px;font-family:var(--sans);font-size:14px;text-align:left;color:var(--text-secondary);background:var(--surface);border:1px solid var(--border);border-radius:9px;cursor:pointer;transition:all .15s}
.panel-btn:hover{border-color:var(--accent);color:var(--text);background:var(--surface)}
.panel-btn svg{width:16px;height:16px;flex-shrink:0}
.panel-btn:disabled{opacity:.4;cursor:not-allowed}
.panel-btn:disabled:hover{border-color:var(--border);color:var(--text-secondary);background:var(--surface)}

@media(max-width:1000px){
  .session-layout{flex-direction:column;gap:0}
  .session-panel{width:auto;flex-direction:row;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:10px;padding:12px 0;border-bottom:1px solid var(--border-light)}
  .panel-context{display:flex;align-items:center;gap:10px;flex-wrap:wrap;background:transparent;border:none;border-radius:0}
  .session-info{padding:0;border-bottom:none}
  .panel-settings{display:flex;gap:0;padding:0}
  .panel-settings dt{display:none}
  .panel-settings dd{text-align:left}
  .panel-settings dd::after{content:'\00b7';margin:0 7px;color:var(--text-tertiary)}
  .panel-settings dd:last-child::after{content:''}
  .panel-actions{flex-direction:row}
  .panel-btn{width:auto}
}
.message{margin-bottom:22px;max-width:760px}
.msg-header{display:flex;align-items:center;gap:8px;margin-bottom:8px}
.msg-label{font-size:10.5px;font-weight:600;letter-spacing:.4px;text-transform:uppercase}
.msg-label.user{color:var(--text-tertiary)}.msg-label.assistant{color:var(--accent)}
.msg-time{font-size:10.5px;color:var(--text-tertiary)}
.msg-body{padding:14px 18px;background:var(--surface);border:1px solid var(--border);border-radius:10px;transition:background .3s,border-color .3s}
.msg-body.user-msg{font-size:14.5px;line-height:1.55}
.msg-body.assistant-msg{font-size:14px;line-height:1.72;padding:18px 22px}
.msg-body.assistant-msg p{margin-bottom:13px}
.msg-body.assistant-msg p:last-child{margin-bottom:0}
.highlight{background:var(--accent-light);padding:1px 5px;border-radius:3px;color:var(--accent-dark);font-weight:500;font-size:13px}
.web-highlight{background:var(--web-bg);padding:1px 5px;border-radius:3px;color:var(--web-accent);font-weight:500;font-size:13px}
.ecdc-highlight{background:#e3f2fd;padding:1px 5px;border-radius:3px;color:#1565c0;font-weight:500;font-size:13px}
body.dark .ecdc-highlight{background:rgba(33,150,243,.15);color:#90caf9}
.disease-term{font-weight:600;cursor:help}
.msg-meta{display:flex;gap:14px;margin-top:10px;font-size:10.5px;color:var(--text-tertiary);flex-wrap:wrap}
.ref-block{margin-top:14px;padding-top:12px;border-top:1px solid var(--border-light)}
.ref-block h5{font-size:10.5px;font-weight:600;letter-spacing:.4px;text-transform:uppercase;color:var(--text-tertiary);margin-bottom:8px}
.ref-item{font-size:12px;color:var(--text-secondary);line-height:1.55;margin-bottom:3px;padding-left:12px;position:relative}
.ref-item::before{content:'–';position:absolute;left:0;color:var(--text-tertiary)}

/* SOURCE PANEL */
.source-panel{background:var(--surface-raised);border:1px solid var(--border);border-radius:10px;margin-top:12px;max-width:760px;overflow:hidden;transition:background .3s,border-color .3s}
.source-header{display:flex;justify-content:space-between;align-items:center;padding:11px 18px;border-bottom:1px solid var(--border-light);cursor:pointer;user-select:none}
.source-header:hover{background:var(--surface-alt)}
.source-header h4{font-size:12px;font-weight:500}
.source-header .toggle{font-size:10px;color:var(--text-tertiary)}
.source-list{padding:8px 12px;display:none}
.source-panel.expanded .source-list{display:block}
.source-panel.expanded .toggle::before{content:'collapse ▴'}
.source-panel:not(.expanded) .toggle::before{content:'expand ▾'}
.source-item{display:flex;align-items:flex-start;gap:10px;padding:9px 11px;border-radius:6px;margin-bottom:2px;cursor:pointer;transition:background .1s}
.source-item:hover{background:var(--surface-alt)}
.source-score{font-size:10.5px;font-weight:600;padding:3px 8px;border-radius:4px;min-width:38px;text-align:center;flex-shrink:0;font-family:var(--mono)}
.source-score.evidence{background:var(--accent-light);color:var(--accent-dark)}
.source-score.web{background:var(--web-bg);color:var(--web-accent)}
.source-score.ecdc{background:#e3f2fd;color:#1565c0}
body.dark .source-score.ecdc{background:rgba(33,150,243,.15);color:#90caf9}
.source-title{font-size:12.5px;color:var(--text);margin-bottom:2px;line-height:1.4}
.source-origin{font-size:11px;color:var(--text-tertiary)}
.source-legend{display:flex;gap:16px;padding:9px 18px;border-top:1px solid var(--border-light);font-size:10.5px;color:var(--text-tertiary);flex-wrap:wrap}
.legend-dot{width:8px;height:8px;border-radius:2px;display:inline-block;vertical-align:middle;margin-right:5px}
.legend-dot.ev{background:var(--accent)}.legend-dot.wb{background:var(--web-accent)}.legend-dot.ec{background:#1565c0}

/* THINKING */
.thinking{display:flex;align-items:center;gap:8px;padding:16px 22px;font-size:13px;color:var(--text-secondary);background:var(--surface);border:1px solid var(--border);border-radius:10px;max-width:760px;margin-bottom:22px}
.thinking-dot{width:5px;height:5px;border-radius:50%;background:var(--accent);animation:pulse 1.4s ease-in-out infinite}
.thinking-dot:nth-child(2){animation-delay:.2s}.thinking-dot:nth-child(3){animation-delay:.4s}
@keyframes pulse{0%,80%,100%{opacity:.3;transform:scale(.8)}40%{opacity:1;transform:scale(1)}}

/* FOLLOWUP INPUT */
/* Composer. The conversation column scrolls, so this simply sits last in
   the flex column and stays put. No sticky, no jumping. */
.followup-input{padding:8px 0 18px;flex-shrink:0}
.followup-input .container{position:relative}
.composer{display:flex;align-items:flex-end;gap:8px;padding:8px 8px 8px 16px;background:var(--surface);border:1px solid var(--border);border-radius:14px;transition:border-color .15s,background .3s}
.composer:focus-within{border-color:var(--accent)}
.composer textarea{flex:1;border:none;outline:none;resize:none;background:transparent;color:var(--text);font-family:var(--sans);font-size:14.5px;line-height:1.5;padding:7px 0;min-height:112px;max-height:220px;overflow-y:auto}
.composer textarea::placeholder{color:var(--text-tertiary)}
.composer-send{flex-shrink:0;width:34px;height:34px;border:none;border-radius:9px;background:var(--accent);color:#fff;cursor:pointer;font-size:15px;line-height:1;display:flex;align-items:center;justify-content:center;transition:background .15s}
.composer-send:hover{background:var(--accent-dark)}
.composer-hint{font-size:11px;color:var(--text-tertiary);text-align:center;margin-top:7px}

/* DOCUMENT TAB */
.document-tab,.export-tab,.evidence-tab,.about-tab{padding:40px 0}
.page-header{margin-bottom:28px}
.page-header h2{font-family:var(--serif);font-size:26px;font-weight:400;color:var(--text);margin-bottom:8px;letter-spacing:-.2px}
.page-header p{font-size:14px;color:var(--text-secondary);max-width:640px;line-height:1.6}
.dropzone{background:var(--surface);border:2px dashed var(--border);border-radius:12px;padding:60px 28px;text-align:center;transition:all .2s;cursor:pointer;margin-bottom:24px;display:block;width:100%}
.dropzone:hover,.dropzone.dragover{border-color:var(--accent);background:var(--accent-light)}
.dropzone-icon{font-size:32px;color:var(--accent);margin-bottom:12px;font-family:var(--serif)}
.dropzone h3{font-family:var(--serif);font-size:18px;font-weight:400;margin-bottom:6px}
.dropzone p{font-size:13px;color:var(--text-tertiary)}
.dropzone input[type="file"]{display:none}

/* SESSIONS TAB */
.session-list{display:flex;flex-direction:column;gap:10px}
.session-card{background:var(--surface);border:1px solid var(--border);border-radius:8px;padding:18px 22px;transition:all .15s;cursor:pointer}
.session-card:hover{border-color:var(--accent);box-shadow:0 1px 6px rgba(15,110,86,.06)}
.session-head{display:flex;justify-content:space-between;align-items:flex-start;gap:16px;margin-bottom:6px}
.session-title{font-family:var(--serif);font-size:16px;font-weight:500;line-height:1.35;flex:1}
.session-time{font-size:11.5px;color:var(--text-tertiary);white-space:nowrap;font-family:var(--mono)}
.session-summary{font-size:12.5px;color:var(--text-secondary);line-height:1.55;margin-bottom:10px}
.session-meta{display:flex;gap:12px;font-size:10.5px;color:var(--text-tertiary);flex-wrap:wrap;align-items:center}
.session-meta .tag{padding:2px 8px;background:var(--surface-alt);border-radius:10px}
.empty-state{text-align:center;padding:60px 24px;color:var(--text-tertiary)}
.empty-state h3{font-family:var(--serif);font-size:18px;color:var(--text-secondary);margin-bottom:8px;font-weight:400}
.empty-state p{font-size:13px;line-height:1.6;max-width:400px;margin:0 auto 18px}

/* EVIDENCE TAB */
.evidence-controls{display:flex;gap:12px;margin-bottom:24px;flex-wrap:wrap}
.evidence-search{flex:1;min-width:240px;padding:11px 16px;font-size:13px;font-family:var(--sans);border:1px solid var(--border);border-radius:8px;background:var(--surface);color:var(--text);outline:none;transition:all .3s}
.evidence-search:focus{border-color:var(--accent)}
.chip{padding:6px 12px;font-size:11.5px;border:1px solid var(--border);border-radius:16px;background:var(--surface);color:var(--text-secondary);cursor:pointer;transition:all .15s;font-family:var(--sans)}
.chip:hover{border-color:var(--accent);color:var(--text)}
.chip.active{background:var(--accent);color:#fff;border-color:var(--accent)}
.pathway-group{margin-bottom:28px}
.pathway-group h3{font-family:var(--serif);font-size:14px;font-weight:500;color:var(--text-secondary);margin-bottom:12px;text-transform:uppercase;letter-spacing:.4px;display:flex;align-items:center;gap:10px}
.pathway-group .count{font-family:var(--mono);font-size:11px;color:var(--text-tertiary);font-weight:400;letter-spacing:0;text-transform:none}
.doc-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:10px}
.doc-card{background:var(--surface);border:1px solid var(--border);border-radius:8px;padding:14px 16px;cursor:pointer;transition:all .15s}
.doc-card:hover{border-color:var(--accent);box-shadow:0 1px 6px rgba(15,110,86,.06)}
.doc-id{font-family:var(--mono);font-size:10.5px;color:var(--accent);letter-spacing:.3px;margin-bottom:4px}
.doc-title{font-family:var(--serif);font-size:14.5px;font-weight:500;line-height:1.35;margin-bottom:6px}
.doc-summary{font-size:11.5px;color:var(--text-tertiary);line-height:1.5;margin-bottom:8px}
.doc-chips{display:flex;gap:4px;flex-wrap:wrap}
.doc-chip{font-size:10px;padding:2px 7px;background:var(--surface-alt);color:var(--text-secondary);border-radius:3px}
.doc-chip.co{background:var(--accent-light);color:var(--accent-dark)}
.doc-chip.tr{background:var(--warm);color:var(--warm-text)}

/* DOC DETAIL OVERLAY */
.detail-overlay{position:fixed;inset:0;background:rgba(26,26,24,.5);z-index:200;display:none;align-items:flex-start;justify-content:center;padding:60px 20px;overflow-y:auto}
body.dark .detail-overlay{background:rgba(0,0,0,.65)}
.detail-overlay.open{display:flex}
.detail-panel{background:var(--surface);border-radius:12px;max-width:760px;width:100%;padding:32px 36px 28px;position:relative;transition:background .3s}
.detail-close{position:absolute;top:16px;right:18px;background:none;border:none;font-size:18px;color:var(--text-tertiary);cursor:pointer;padding:4px 8px;border-radius:4px}
.detail-close:hover{background:var(--surface-alt);color:var(--text)}
.detail-panel h2{font-family:var(--serif);font-size:24px;font-weight:500;margin-bottom:6px;letter-spacing:-.2px;line-height:1.25}
.section-item{background:var(--surface-alt);border-radius:6px;margin-bottom:6px;font-size:13px;line-height:1.5;transition:background .3s}
.section-item:not(.has-detail){padding:10px 14px}
.section-item.co-benefit{background:var(--accent-light);color:var(--accent-dark)}
.section-item.trade-off{background:var(--warm);color:var(--warm-text)}
.section-item-type{display:block;font-size:9.5px;font-weight:600;text-transform:uppercase;letter-spacing:.4px;margin-bottom:3px}
.section-item.has-detail{padding:0}
.mech-head{width:100%;display:flex;align-items:flex-start;gap:10px;padding:10px 14px;background:none;border:none;text-align:left;color:inherit;font-family:var(--sans);font-size:13px;line-height:1.5;cursor:pointer;border-radius:6px}
.mech-head:hover .mech-chevron{opacity:1}
.mech-head-text{flex:1;min-width:0}
.mech-chevron{flex-shrink:0;margin-top:2px;opacity:.6;transition:transform .25s,opacity .15s}
.mech-chevron svg{width:15px;height:15px;display:block}
.section-item.open .mech-chevron{transform:rotate(180deg);opacity:1}
.mech-body{padding:0 14px}
.mech-empty{color:inherit;opacity:.7;font-style:italic}
.mech-detail{display:grid;grid-template-rows:0fr;transition:grid-template-rows .3s ease}
.section-item.open .mech-detail{grid-template-rows:1fr}
.mech-detail-inner{overflow:hidden;min-height:0}
.mech-detail-body{padding:11px 0 12px;margin-top:2px;border-top:1px solid var(--border-light);font-size:12.5px;line-height:1.6}
.mech-detail-body p{margin:0 0 9px}
.mech-detail-body p:last-child{margin-bottom:0}
.mech-detail-body ul{margin:0;padding-left:16px}
.mech-detail-body li{margin-bottom:6px}
.mech-detail-body li:last-child{margin-bottom:0}
.measure-list{margin:0 0 18px;padding-left:18px;font-size:13px;line-height:1.6}
.measure-list li{margin-bottom:6px}

/* PATHWAY EXPLORER TAB — fresh */
.px-wrap{padding:32px 0 60px}
.px-top{display:flex;justify-content:space-between;align-items:flex-start;gap:24px;margin-bottom:32px;flex-wrap:wrap}
.px-top h2{font-family:var(--serif);font-size:28px;font-weight:400;color:var(--text);margin-bottom:6px;letter-spacing:-.2px}
.px-top p{font-size:13.5px;color:var(--text-secondary);line-height:1.6;max-width:620px}
.px-pdf-btn{display:inline-flex;align-items:center;gap:7px;padding:9px 16px;background:var(--surface);border:1px solid var(--border);border-radius:6px;color:var(--text-secondary);font-size:12.5px;font-family:var(--sans);cursor:pointer;text-decoration:none;transition:all .15s;white-space:nowrap}
.px-pdf-btn:hover{border-color:var(--accent);color:var(--accent);background:var(--accent-light)}
.px-pdf-btn svg{width:14px;height:14px}
.px-reset{display:inline-flex;align-items:center;gap:6px;padding:7px 14px;background:transparent;border:1px solid var(--border);border-radius:5px;color:var(--text-secondary);font-size:12px;font-family:var(--sans);cursor:pointer;margin-bottom:18px;transition:all .15s}
.px-reset:hover{border-color:var(--accent);color:var(--text)} .px-learn{display:inline-flex;align-items:center;gap:6px;padding:7px 14px;margin-left:10px;margin-bottom:18px;background:var(--accent-light);border:1px solid var(--accent);border-radius:5px;color:var(--accent-dark);font-size:12px;font-family:var(--sans);cursor:pointer;transition:all .15s;vertical-align:top} .px-learn:hover{background:var(--accent);color:#fff} .px-learn svg{width:14px;height:14px}
.px-hero{display:flex;flex-direction:column;align-items:center;padding:32px 0 20px}
.px-hero h3{font-family:var(--serif);font-size:22px;font-weight:400;margin-bottom:10px;color:var(--text);letter-spacing:-.2px}
.px-hero p{font-size:13px;color:var(--text-tertiary);margin-bottom:32px;max-width:440px;text-align:center;line-height:1.55}
.px-sector-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:14px;width:100%;max-width:1000px}
.px-sector-card{padding:22px 20px;border-radius:10px;cursor:pointer;text-align:left;font-family:var(--sans);border:1px solid;transition:all .25s;position:relative;overflow:hidden}
.px-sector-card:hover{transform:translateY(-2px);box-shadow:0 4px 16px rgba(0,0,0,.06)}
.px-sector-card .px-sec-label{font-family:var(--mono);font-size:9.5px;letter-spacing:.15em;text-transform:uppercase;opacity:.7;margin-bottom:8px}
.px-sector-card .px-sec-name{font-family:var(--serif);font-size:17px;font-weight:500;line-height:1.25;margin-bottom:10px}
.px-sector-card .px-sec-count{font-size:11.5px;opacity:.7}
.px-flow{position:relative;min-height:620px;overflow-x:auto;padding-bottom:20px}
.px-flow-inner{display:flex;align-items:flex-start;position:relative;min-width:100%}
.px-svg{position:absolute;inset:0;pointer-events:none;z-index:1;overflow:visible}
.px-svg path{fill:none}
.px-col{flex-shrink:0;position:relative;z-index:2;display:flex;flex-direction:column}
.px-col-head{font-family:var(--mono);font-size:9.5px;letter-spacing:.14em;text-transform:uppercase;color:var(--text-tertiary);padding-bottom:10px;border-bottom:1px solid var(--border-light);margin-bottom:12px;white-space:nowrap}
.px-col-sub{font-family:var(--mono);font-size:8.5px;letter-spacing:.12em;text-transform:uppercase;padding:10px 0 4px;font-weight:600;opacity:.65}
.px-col-sub.co{color:var(--accent)}
.px-col-sub.tr{color:var(--web-accent)}
.px-node{display:block;width:100%;text-align:left;padding:7px 13px;margin-bottom:4px;border-radius:6px;font-size:12.5px;font-family:var(--sans);line-height:1.35;cursor:pointer;transition:all .28s;border:1px solid transparent;background:var(--surface);color:var(--text);opacity:.38;position:relative}
.px-node:hover{opacity:.75}
.px-node.dim{opacity:.18;cursor:default}
.px-node.dim:hover{opacity:.18}
.px-node.lit-co{opacity:1;background:var(--accent-light);border-color:var(--accent);color:var(--accent-dark);border-left:3px solid var(--accent);border-radius:0 6px 6px 0;font-weight:500}
.px-node.lit-tr{opacity:1;background:var(--web-bg);border-color:var(--web-accent);color:var(--web-accent);border-left:3px solid var(--web-accent);border-radius:0 6px 6px 0;font-weight:500}
.px-node.lit-measure{opacity:1;font-weight:500}
.px-node.lit-disease{opacity:1;background:var(--disease-light);border-color:var(--disease);color:var(--disease-dark);border-left:3px solid var(--disease);border-radius:0 6px 6px 0;font-weight:500}
.px-node.sel{font-weight:600;box-shadow:0 0 0 2px var(--accent)}
.px-node.sel.lit-tr{box-shadow:0 0 0 2px var(--web-accent)}
.px-node-sub{font-family:var(--mono);font-size:9.5px;opacity:.55;margin-right:6px}
.px-col-sector{padding-right:40px}
.px-col-sector .px-sec-card{padding:12px 14px;border-radius:8px;border:1px solid;cursor:default;transition:all .3s}
.px-col-sector .px-sec-card.dim{opacity:.25}
.px-col-sector .px-sec-card .px-sec-label{font-family:var(--mono);font-size:9px;letter-spacing:.12em;text-transform:uppercase;opacity:.7;margin-bottom:5px}
.px-col-sector .px-sec-card .px-sec-name{font-family:var(--serif);font-size:14.5px;font-weight:500;line-height:1.3}
.px-bc{display:flex;align-items:center;gap:8px;margin-top:24px;padding-top:18px;border-top:1px solid var(--border-light);font-size:12px;color:var(--text-tertiary);flex-wrap:wrap}
.px-bc .px-bc-item{padding:4px 10px;border-radius:4px;font-weight:500}
.px-bc .px-bc-sep{opacity:.4;font-size:10px}
.px-legend{display:flex;gap:20px;margin-top:14px;font-size:11px;color:var(--text-tertiary);flex-wrap:wrap;align-items:center}
.px-legend-item{display:flex;align-items:center;gap:6px}
.px-legend-line{width:22px;height:2px;border-radius:1px}
@keyframes pxFadeIn{from{opacity:0;transform:translateX(18px)}to{opacity:1;transform:translateX(0)}}
.px-col.animate-in{animation:pxFadeIn .4s cubic-bezier(.16,1,.3,1)}

/* ABOUT TAB */
.about-tab{padding:48px 0 60px}
.about-section{margin-bottom:56px;padding-bottom:48px;border-bottom:1px solid var(--border)}
.about-section:last-child{border-bottom:none;padding-bottom:0}
.about-section .eyebrow{font-family:var(--mono);font-size:10.5px;letter-spacing:.18em;text-transform:uppercase;color:var(--accent);margin-bottom:14px}
.about-section h2{font-family:var(--serif);font-size:clamp(26px,3vw,36px);font-weight:400;line-height:1.15;margin-bottom:18px;letter-spacing:-.2px}
.about-section h2 .italic{font-style:italic;color:var(--accent)}
.about-section>p{font-size:15px;line-height:1.7;max-width:680px;margin-bottom:14px}
.about-section>p.lede{font-size:16px;color:var(--text-secondary)}
.two-col{display:grid;grid-template-columns:1fr;gap:28px;margin-top:20px}
@media(min-width:760px){.two-col{grid-template-columns:1fr 1fr;gap:40px}}
.two-col h3{font-family:var(--serif);font-size:17px;font-weight:500;margin-bottom:8px}
.two-col p{font-size:14px;line-height:1.65}
.pipeline{display:grid;grid-template-columns:1fr;gap:16px;margin-top:24px}
@media(min-width:900px){.pipeline{grid-template-columns:repeat(5,1fr);gap:12px}}
.step{padding:20px 22px;background:var(--surface);border:1px solid var(--border);border-radius:8px;transition:background .3s,border-color .3s}
.step-num{font-family:var(--mono);font-size:10.5px;color:var(--accent);letter-spacing:.15em;margin-bottom:10px}
.step h4{font-family:var(--serif);font-size:15px;font-weight:500;margin-bottom:8px;line-height:1.3}
.step p{font-size:12.5px;line-height:1.55;color:var(--text-secondary)}
.step .model{font-family:var(--mono);font-size:10.5px;color:var(--accent-dark);margin-top:10px}
.limit-list{display:grid;grid-template-columns:1fr;gap:0;margin-top:18px}
@media(min-width:800px){.limit-list{grid-template-columns:1fr 1fr;gap:0 36px}}
.limit-item{padding:16px 0;border-bottom:1px solid var(--border-light)}
.mark{display:inline-block;font-family:var(--mono);font-size:10.5px;letter-spacing:.12em;padding:3px 8px;margin-bottom:8px;text-transform:uppercase}
.mark.yes{background:var(--accent);color:var(--bg)}.mark.no{background:var(--danger);color:var(--bg)}
.limit-item h4{font-family:var(--serif);font-size:15px;font-weight:500;margin-bottom:4px}
.limit-item p{font-size:13px;color:var(--text-secondary);line-height:1.55}

/* FOOTER */
footer.app-footer{border-top:1px solid var(--border);padding:20px 0;margin-top:24px;background:var(--surface);transition:background .3s,border-color .3s}
.footer-inner{display:flex;justify-content:space-between;align-items:center;font-size:11.5px;color:var(--text-tertiary);line-height:1.6;gap:16px;flex-wrap:wrap}
.footer-inner a{color:var(--accent);text-decoration:none}
.footer-disclaimer{max-width:520px}

.hidden{display:none!important}

@media print{
  header.app-header,nav.main-nav,.followup-input,footer.app-footer,.panel-actions,.theme-toggle{display:none!important}
  .tab-panel{display:block!important}
  body,body.dark{background:#fff;color:#1A1A18}
  .msg-body,.source-panel,.session-card,.doc-card{break-inside:avoid}
}

/* Disease profile modal */
.dp-overlay{display:none;position:fixed;inset:0;background:rgba(20,18,15,.55);backdrop-filter:blur(2px);z-index:400;align-items:center;justify-content:center;padding:24px}
.dp-overlay.open{display:flex;animation:fadeIn .18s ease}
.dp-panel{background:var(--surface,#fff);color:var(--text,#1a1a18);max-width:720px;width:100%;max-height:88vh;overflow-y:auto;border-radius:10px;padding:32px 36px;box-shadow:0 16px 48px rgba(0,0,0,.18);position:relative}
body.dark .dp-panel{background:#1f1d1a;color:#e8e4dc}
.dp-close{position:absolute;top:14px;right:18px;background:transparent;border:none;font-size:24px;cursor:pointer;color:var(--text-muted,#666);line-height:1}
.dp-close:hover{color:var(--text,#1a1a18)}
body.dark .dp-close{color:#999}
body.dark .dp-close:hover{color:#fff}
.dp-title{font-family:var(--serif,Georgia,serif);font-size:24px;font-weight:500;line-height:1.2;margin-bottom:16px;padding-right:36px;letter-spacing:-0.01em}
.dp-body{font-size:14px;line-height:1.65;color:var(--text,#1a1a18)}
body.dark .dp-body{color:#d8d4cc}
.dp-body p{margin-bottom:16px}
.dp-body h4{font-family:var(--serif,Georgia,serif);font-size:14px;font-weight:600;margin-top:18px;margin-bottom:8px;text-transform:uppercase;letter-spacing:0.06em;color:var(--text-muted,#666)}
body.dark .dp-body h4{color:#aaa}
.dp-sources{list-style:none;padding:0;margin:0}
.dp-sources li{padding:6px 0;border-bottom:1px dotted var(--border,#e0d8c4);font-size:13px}
.dp-sources li:last-child{border-bottom:none}
.dp-sources a{color:var(--accent,#0F6E56);text-decoration:none}
.dp-sources a:hover{text-decoration:underline}
body.dark .dp-sources a{color:#5cba9a}


/* Shown only if the JSON in data/ cannot be fetched. */
.data-error{max-width:640px;margin:80px auto;padding:24px 26px;background:var(--danger-bg);border:1px solid var(--danger-border);border-radius:12px;color:var(--text)}
.data-error h3{font-family:var(--serif);font-size:18px;font-weight:500;margin-bottom:8px}
.data-error p{font-size:13.5px;line-height:1.6;color:var(--text-secondary);margin-bottom:8px}
.data-error code{font-family:var(--mono);font-size:12.5px;background:var(--surface-alt);padding:2px 6px;border-radius:4px;color:var(--text)}