@import url('https://fonts.googleapis.com/css2?family=DM+Sans:wght@400;500;600;700&family=Manrope:wght@500;600;700;800&display=swap');
[hidden]{display:none!important}
:root{--bg:#f6f8f5;--surface:#fff;--ink:#1d2b25;--muted:#58695f;--line:#dde5db;--brand:#25503f;--brand-hover:#2f6650;--soft:#e8f0e6;--tint:#f1f6ef;--warn:#8a3b2b;--ring:#7fae92;font-family:'DM Sans',system-ui,sans-serif;color:var(--ink);background:var(--bg);font-size:16px}
*{box-sizing:border-box}
body{margin:0;display:flex;height:100dvh;line-height:1.5;overflow:hidden}
button,input,textarea,select{font:inherit;color:inherit}
button{cursor:pointer;border:1px solid var(--line);background:var(--surface);border-radius:10px;padding:9px 14px}
button:hover{background:var(--tint)}
button:disabled{opacity:.55;cursor:not-allowed}
button:focus-visible,input:focus-visible,textarea:focus-visible,select:focus-visible,a:focus-visible,summary:focus-visible{outline:3px solid var(--ring);outline-offset:2px}
a{color:#1f6046}
.primary{background:var(--brand);color:#fff;border-color:var(--brand);font-weight:600}
.primary:hover{background:var(--brand-hover)}
.muted{color:var(--muted);font-size:14px}
input{padding:10px 12px;border:1px solid #cbd7c9;border-radius:10px;background:#fff;max-width:100%}

/* Sidebar */
aside{width:280px;background:#eef3ec;border-right:1px solid var(--line);padding:24px 16px 18px;display:flex;flex-direction:column;flex-shrink:0;gap:20px}
.brand{font-family:Manrope,sans-serif;font-size:24px;font-weight:800;text-decoration:none;color:var(--brand);display:flex;align-items:center;gap:10px}
.logo{font-size:19px;background:var(--brand);color:#fff;padding:3px 9px;border-radius:10px}
.new-chat{width:100%;padding:12px;font-size:15px}
.chat-history{flex:1;min-height:80px;overflow:auto}
.chat-history h2{font-size:12px;letter-spacing:.08em;text-transform:uppercase;color:var(--muted);margin:0 0 12px 8px;font-weight:700}
.saved-chat-row{display:flex;margin-bottom:6px}
.saved-chat{display:block;text-align:left;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;width:100%;border:0;border-left:3px solid transparent;background:transparent;padding:11px 12px;font-size:14px;border-radius:8px;font-weight:500}
.saved-chat:hover{background:#e1eadf}
.saved-chat.active{background:#fff;border-left-color:var(--brand);font-weight:600;box-shadow:0 1px 6px #1d2b2514}
.profile{border-top:1px solid var(--line);padding-top:14px}
.account-profile strong{display:block;font-size:14px}
.account-profile small{display:block;overflow-wrap:anywhere;color:var(--muted);font-size:12px}
.account-profile form{padding:0;border:0;box-shadow:none;background:transparent;margin-top:8px}
.account-profile button{font-size:13px;padding:6px 12px}
.close-chat-sidebar{display:none}

/* Header with simple tabs */
main{flex:1;min-width:0;min-height:0;height:100dvh;display:flex;flex-direction:column}
header{height:64px;border-bottom:1px solid var(--line);background:var(--surface);display:flex;align-items:center;gap:12px;padding:0 28px;flex-shrink:0}
.tabs{display:flex;gap:6px}
.nav{border:0;background:transparent;color:var(--muted);padding:9px 16px;border-radius:999px;font-weight:500}
.nav:hover{background:var(--tint)}
.nav.active{background:var(--soft);color:var(--brand);font-weight:700}
.nav span{margin-left:6px;background:#fff;border-radius:999px;padding:1px 8px;font-size:12px;color:var(--muted)}
#toggleChats{display:none}

/* Chat */
#chatView{flex:1;min-height:0;display:flex;flex-direction:column;overflow:hidden}
#chatScroll{flex:1;min-height:0;overflow:auto;display:flex;flex-direction:column;scroll-padding-top:12px}
#welcome{max-width:720px;width:100%;padding:56px 24px 16px;margin:auto}
#welcome h1,.library-head h1{font-family:Manrope,sans-serif;font-size:36px;line-height:1.2;letter-spacing:-.02em;font-weight:700;margin:0 0 12px}
#welcome>p,.library-head>p{color:var(--muted);font-size:17px;line-height:1.6;margin:0}
.suggest-label{font-size:13px;font-weight:700;letter-spacing:.06em;text-transform:uppercase;color:var(--muted);margin:30px 0 10px}
.suggestions{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.suggestions button{text-align:left;padding:16px 18px;background:#fff;border-color:var(--line);font-weight:500;line-height:1.4}
.suggestions button:hover{border-color:#a9c4b2;background:var(--tint)}
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin:30px 0 0;padding:0;list-style:none}
.steps li{background:var(--tint);border-radius:14px;padding:14px 16px;font-size:14px;color:var(--muted)}
.steps b{display:block;color:var(--ink);margin-bottom:2px;font-size:15px}
.empty-hint{font-size:14px;color:var(--muted);margin:18px 0}
#chatActions{max-width:800px;width:100%;margin:0 auto;padding:12px 24px 0;text-align:right}
#chatActions button,#olderMessages{font-size:13px;padding:6px 12px}
#olderMessages{margin:12px auto}
#messages{max-width:800px;width:100%;margin:0 auto;padding:12px 24px 32px;flex:1}
.message{margin:18px 0;line-height:1.7;font-size:16px}
.message.user{margin-left:auto;padding:12px 18px;background:var(--soft);border-radius:16px 16px 4px 16px;max-width:85%;width:fit-content;white-space:pre-wrap}
.message:not(.user){background:transparent;border:0;border-radius:0;padding:4px 0 26px;margin:22px 0 34px;border-bottom:1px solid var(--line);box-shadow:none}
.message:not(.user):last-child{border-bottom:0}
.answer-label{display:flex;align-items:center;gap:8px;font-weight:700;margin-bottom:14px;color:var(--brand)}
.answer-label:before{content:'lp';background:var(--brand);color:#fff;font-size:11px;padding:2px 6px;border-radius:7px}
.message h3{margin:22px 0 6px;font-size:12px;letter-spacing:.08em;text-transform:uppercase;color:var(--brand);font-weight:700}
.message h3:first-of-type{margin-top:4px}
.message p{margin:6px 0}
.message ul{margin:6px 0 6px 20px;padding:0}
.message li{margin:8px 0}
.protocol-phase{margin:16px 0 2px;font-size:15px;color:var(--ink)}
.sentence-text{display:inline;border:0;background:none;padding:0;color:inherit;font:inherit;text-align:left;line-height:1.7;cursor:pointer}
.sentence-text:hover{text-decoration:underline;text-decoration-color:#76a68a;text-underline-offset:4px}
.citation{font-size:12px;padding:1px 8px;border-radius:999px;background:var(--soft);border:0;color:var(--brand);font-weight:600;max-width:100%;overflow-wrap:anywhere}
.citation:hover{background:#d3e3d0}
.grounded-sentence .citation,.message li .citation{display:inline;vertical-align:baseline}
.analysis-box{border-left:4px solid #6f9a82;background:var(--tint);padding:12px 16px;margin:20px 0;border-radius:6px 12px 12px 6px}
.analysis-box strong{color:var(--brand)}
.analysis-box p{margin:6px 0 0}
.next-questions{margin:18px 0 0;padding:14px 16px;background:#fafbf9;border:1px dashed #c5d3c2;border-radius:12px}
.next-questions ul{margin:6px 0 0 18px}
.next-questions li{margin:8px 0}
.followup-arrow{margin-left:8px;padding:2px 9px;font-size:16px;line-height:1.2;border-radius:8px}
.sources-title{margin-top:28px!important}
.answer-note{display:block;margin-top:18px;padding-top:12px;border-top:1px solid var(--line);font-size:13px;line-height:1.5}
.save-error{color:var(--warn)}
.message a,#sourceLocation a{color:#1f6046;text-decoration:underline}
.evidence{border-left:3px solid #95ae86;padding:5px 18px;margin:18px 0;background:var(--tint)}
.evidence p{white-space:pre-wrap;font-size:14px;max-height:320px;overflow:auto}

/* Composer */
.composer-wrap{flex-shrink:0;width:100%;max-width:800px;padding:10px 24px 18px;margin:0 auto}
form{border:1px solid #c9d6c6;border-radius:16px;background:#fff;padding:12px 16px;box-shadow:0 4px 20px #1d2b250d}
form:focus-within{border-color:#8fb5a0;box-shadow:0 4px 22px #25503f1f}
textarea{resize:none;width:100%;border:0;background:transparent;font-size:16px;line-height:1.5;outline:none}
textarea::placeholder{color:#7a8a80}
.composer-bottom{display:flex;align-items:center;justify-content:space-between;margin-top:6px;font-size:13px;color:var(--muted)}
.send{background:var(--brand);color:#fff;font-size:20px;line-height:1;padding:8px 14px;border:0;border-radius:12px}
.send:hover{background:var(--brand-hover)}
#chatSaveStatus{margin:8px 0 0;font-size:12px;min-height:16px;text-align:center;color:var(--muted)}
.fine{text-align:center;font-size:12px;color:#7a887f;margin:2px 0 0}

/* Library */
#libraryView{overflow:auto;padding:36px 28px;flex:1;max-width:860px;width:100%;margin:0 auto}
.library-head h1{font-size:30px}
.library-toolbar{display:flex;gap:12px;margin:22px 0 10px}
.library-toolbar input{flex:1;max-width:none}
.file-row{display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid var(--line);padding:14px 4px;gap:15px}
.file-row strong{overflow-wrap:anywhere;font-weight:600}
.file-row small{display:block;color:var(--muted);margin-top:4px;overflow-wrap:anywhere;font-size:13px}
.file-row>div{min-width:0}
.file-row button{flex-shrink:0;font-size:14px}
#importStatus{font-size:13px;color:var(--muted)}

/* Source passage dialog */
dialog{border:1px solid var(--line);border-radius:18px;width:760px;max-width:92vw;max-height:88vh;padding:26px;box-shadow:0 24px 80px #142c3530;background:#fff}
dialog::backdrop{background:#1e332a66}
.dialog-header{display:flex;justify-content:space-between;gap:20px;align-items:flex-start}
.dialog-header>button{width:42px;height:42px;flex-shrink:0;padding:0}
.eyebrow{letter-spacing:.08em;font-size:12px;font-weight:700;color:var(--muted);text-transform:uppercase}
h2{font-size:21px;margin:4px 0;overflow-wrap:anywhere}
#sourceLocation{color:var(--muted);font-size:14px}
pre{white-space:pre-wrap;overflow-wrap:anywhere;font-family:inherit;font-size:15px;line-height:1.75;background:var(--tint);padding:20px;border-radius:12px}
#sourceText{max-height:58vh;overflow:auto}
mark{background:#f1e08a;color:#172f23;padding:0 2px;border-radius:3px}

/* Sign in / create account */
.account-form{height:auto;min-height:0;flex:none;max-width:440px;width:100%;margin:auto;background:#fff;border:1px solid var(--line);border-radius:20px;padding:32px;box-shadow:0 10px 40px #1d2b250f}
.account-form h1{font-family:Manrope,sans-serif;font-size:28px;line-height:1.2;margin:18px 0 6px}
.account-form label{display:block;margin-top:14px;font-weight:600;font-size:15px}
.account-form input{display:block;max-width:none;width:100%;margin:6px 0 4px}
.account-form form{border:0;box-shadow:none;padding:0;background:transparent}
.account-form button{margin-top:16px}
.account-form .primary{width:100%;padding:12px}
.account-form details{margin-top:22px;border-top:1px solid var(--line);padding-top:16px}
.account-form summary{cursor:pointer;font-weight:600;color:var(--brand)}
.account-form input[aria-invalid="true"]{border:2px solid #aa392c}
.account-form [role=alert]{background:#fbeceb;color:#7d2a20;border-radius:10px;padding:10px 12px;margin:14px 0 0}
.account-form .privacy{font-size:13px;color:var(--muted);margin-top:18px}

/* Tablet and phone: the chat list becomes a slide-in menu */
@media(max-width:820px){
 #toggleChats{display:block}
 aside{position:fixed;inset:0 auto 0 0;z-index:20;transform:translateX(-102%);transition:transform .2s ease;width:290px;box-shadow:6px 0 30px #0003}
 .show-chat-sidebar aside{transform:none}
.sidebar-backdrop{position:fixed;inset:0;z-index:15;border:0;border-radius:0;background:#1e332a55;padding:0}
 .close-chat-sidebar{display:block;align-self:flex-end;padding:6px 12px;font-size:13px}
 header{padding:0 14px;gap:8px}
 #welcome{padding:32px 18px 8px}
 #welcome h1{font-size:29px}
 .suggestions,.steps{grid-template-columns:1fr}
 #messages{padding:8px 14px 20px}
 .message:not(.user){padding:4px 0 22px}
 .composer-wrap{padding:10px 14px 12px}
 #libraryView{padding:24px 16px}
 .library-toolbar{flex-wrap:wrap}
 dialog{padding:18px}
 .account-form{padding:24px 20px}
}
@media(prefers-reduced-motion:reduce){aside{transition:none}}

/* Sources: one compact line per document */
.source-row{display:flex;align-items:center;gap:10px;margin:0!important;padding:9px 0;border-top:1px solid var(--line);font-size:15px}
.source-row:first-of-type{border-top:0}
.source-row[hidden]{display:none!important}
.source-main{flex:1;min-width:0;display:flex;gap:6px;text-align:left;background:transparent;border:0;border-radius:6px;padding:2px 4px;margin-left:-4px;font-size:15px;font-weight:500;color:var(--ink)}
.source-main:hover{background:var(--tint)}
.source-num{flex-shrink:0;color:var(--brand);font-weight:700}
.source-title{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.source-meta{flex-shrink:0;font-size:12px;color:var(--muted);white-space:nowrap}
.source-tag{display:inline-block;border:1px solid var(--line);border-radius:999px;padding:1px 8px;font-size:11px;font-weight:700;letter-spacing:.04em;text-transform:uppercase;background:#fff}
.source-open{flex-shrink:0;display:inline-flex;align-items:center;justify-content:center;width:30px;height:30px;border-radius:8px;text-decoration:none!important;font-size:17px;color:var(--brand);border:1px solid var(--line);background:#fff}
.source-open:hover{background:var(--tint)}
.source-passages{flex-basis:100%;padding-left:2px}
.source-row:has(.source-passages){flex-wrap:wrap}
.sources-toggle{margin-top:8px;font-size:14px;padding:6px 12px;color:var(--brand)}
@media(max-width:560px){.source-meta{display:none}}

/* Keep the composer inside the visible viewport, including the phone keyboard. */
body:not(.account-page),body:not(.account-page)>main{height:var(--app-height,100dvh)}
.account-page{overflow:auto;height:auto;min-height:100dvh;padding:24px}
.message{overflow-wrap:anywhere;min-width:0}
.message table{display:block;max-width:100%;overflow-x:auto}
.sidebar-backdrop:hover{background:#1e332a55}
@media(max-width:820px){
 aside{width:min(320px,calc(100vw - 32px));height:var(--app-height,100dvh);padding: max(14px,env(safe-area-inset-top)) 16px max(16px,env(safe-area-inset-bottom));gap:14px;overflow-y:auto}
 .chat-history{min-height:60px}
 header{height:auto;min-height:60px;padding-top:env(safe-area-inset-top);padding-left:max(10px,env(safe-area-inset-left));padding-right:max(10px,env(safe-area-inset-right))}
 .tabs{min-width:0;gap:2px}
 .nav{padding:10px 12px;white-space:nowrap}
 #toggleChats,.close-chat-sidebar,.send,.followup-arrow,.source-open,.source-main,.sources-toggle,.saved-chat,#chatActions button,#olderMessages,.file-row button{min-height:44px}
 .followup-arrow,.source-open,.send{min-width:44px}
 .followup-arrow{display:inline-flex;align-items:center;justify-content:center;vertical-align:middle}
 .source-main{align-items:center}
 .composer-wrap{padding:8px max(12px,env(safe-area-inset-right)) max(10px,env(safe-area-inset-bottom)) max(12px,env(safe-area-inset-left))}
 .composer-wrap form{padding:10px 12px}
 .composer-bottom>span{min-width:0;overflow-wrap:anywhere}
 #question{display:block;max-height:140px;overflow:auto}
 .fine{line-height:1.4}
 dialog{width:calc(100vw - 24px);max-width:760px;max-height:calc(var(--app-height,100dvh) - 24px);padding:16px;overflow:auto;overscroll-behavior:contain}
 .dialog-header{gap:10px}
 .dialog-header>div{min-width:0}
 #sourceTitle{font-size:18px;line-height:1.4;max-height:4.2em;overflow:auto;overscroll-behavior:contain}
 .dialog-header>button{min-width:44px;min-height:44px;position:sticky;top:0;background:#fff}
 #sourceText{max-height:50dvh;padding:12px;font-size:15px;overscroll-behavior:contain}
 .account-page{padding:max(14px,env(safe-area-inset-top)) max(12px,env(safe-area-inset-right)) max(14px,env(safe-area-inset-bottom)) max(12px,env(safe-area-inset-left))}
 .account-form{margin:auto;min-width:0}
 .account-form button,.account-form summary{min-height:44px}
}
@media(max-width:380px){
 header{gap:4px}
 #toggleChats{padding:9px 10px}
 .nav{padding:10px}
 .nav span{margin-left:3px;padding:1px 5px}
 #welcome{padding:24px 14px 8px}
 #welcome h1{font-size:26px}
 .message.user{max-width:94%;padding:10px 14px}
 #messages{padding-left:12px;padding-right:12px}
}
@media(pointer:coarse){.keyboard-hint{display:none}}
@media(max-height:500px) and (max-width:820px){
 .composer-wrap .fine{display:none}
 .composer-wrap{padding-top:4px;padding-bottom:max(4px,env(safe-area-inset-bottom))}
 #chatSaveStatus{margin-top:2px}
}