:root{--bg:#1a1d24;--bg-2:#20242d;--card:#f6f1e7;--ink:#2a2622;--ink-soft:#5c554c;--accent:#b8895a;--accent-deep:#8a6234;--line:#e0d7c6;--user-bubble:#2f3742;--user-ink:#eef1f5}*{box-sizing:border-box}body,html{margin:0;padding:0;background:var(--bg);color:var(--ink);font-family:ui-serif,Georgia,Times New Roman,serif;-webkit-font-smoothing:antialiased}.app{max-width:760px;margin:0 auto;min-height:100vh;display:flex;flex-direction:column;padding:0 16px}.masthead{text-align:center;padding:28px 0 12px;color:#efe7d6}.masthead h1{font-size:26px;letter-spacing:.5px;margin:0 0 4px}.masthead p{margin:0;font-size:14px;color:#b9b0a0;font-style:italic}.transcript{flex:1 1;display:flex;flex-direction:column;gap:16px;padding:18px 0 8px}.bubble{max-width:88%;padding:14px 18px;border-radius:14px;line-height:1.55;font-size:16px;white-space:normal}.bubble.assistant{background:var(--card);color:var(--ink);border:1px solid var(--line);border-bottom-left-radius:4px;align-self:flex-start;box-shadow:0 1px 0 rgba(0,0,0,.18)}.bubble.user{background:var(--user-bubble);color:var(--user-ink);border-bottom-right-radius:4px;align-self:flex-end;font-family:ui-sans-serif,system-ui,sans-serif;font-size:15px}.bubble strong{color:var(--accent-deep)}.bubble.user strong{color:#f0d9bf}.bubble em{color:var(--ink-soft)}.thinking{align-self:flex-start;color:#b9b0a0;font-style:italic;font-size:14px;padding:6px 4px}.composer{position:-webkit-sticky;position:sticky;bottom:0;background:linear-gradient(180deg,rgba(26,29,36,0) 0,var(--bg) 26%);padding:10px 0 18px}.quickbar{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:10px}.chip{font-family:ui-sans-serif,system-ui,sans-serif;font-size:13px;letter-spacing:.4px;padding:7px 13px;border-radius:999px;border:1px solid #3a414c;background:var(--bg-2);color:#d8cfbe;cursor:pointer;transition:all .12s ease}.chip:hover{color:#f4e9d6}.chip.primary,.chip:hover{border-color:var(--accent)}.chip.primary{background:var(--accent);color:#20242d;font-weight:600}.inputrow{display:flex;gap:10px;align-items:flex-end}textarea.input{flex:1 1;resize:none;min-height:52px;max-height:180px;padding:14px 16px;border-radius:12px;border:1px solid #3a414c;background:#f6f1e7;color:var(--ink);font-family:ui-sans-serif,system-ui,sans-serif;font-size:15px;line-height:1.45}textarea.input:focus{outline:none;border-color:var(--accent)}button.send{font-family:ui-sans-serif,system-ui,sans-serif;font-weight:600;font-size:15px;padding:14px 20px;border-radius:12px;border:none;background:var(--accent);color:#20242d;cursor:pointer;height:52px}button.send:disabled{opacity:.5;cursor:default}.login-wrap{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:24px}.login-card{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:34px 30px;width:100%;max-width:400px;text-align:center}.login-card h1{font-size:22px;margin:0 0 6px}.login-card p{color:var(--ink-soft);font-size:14px;margin:0 0 22px;font-style:italic}.login-card input{padding:13px 14px;border-radius:10px;border:1px solid var(--line);margin-bottom:12px}.login-card button,.login-card input{width:100%;font-size:15px;font-family:ui-sans-serif,system-ui,sans-serif}.login-card button{padding:13px;border-radius:10px;border:none;background:var(--accent-deep);color:#fff;font-weight:600;cursor:pointer}.login-error{color:#b3402f;font-size:13px;margin:0 0 12px;font-style:normal}.worksheet{background:var(--card);color:var(--ink);border:1px solid var(--line);border-radius:14px;padding:26px;align-self:stretch}.worksheet h2{font-size:22px;margin:0 0 4px;text-align:center}.worksheet .meta{text-align:center;font-size:13px;color:var(--ink-soft);margin-bottom:18px;font-style:italic}.worksheet table{width:100%;border-collapse:collapse;margin-bottom:22px;font-size:14px}.worksheet td,.worksheet th{border:1px solid var(--line);padding:9px 11px;text-align:left;vertical-align:top}.worksheet th{background:#efe7d6;font-size:12px;letter-spacing:.5px;text-transform:uppercase}.worksheet .cat{font-weight:700}.worksheet .role{display:block;font-weight:400;font-size:11px;font-style:italic;color:var(--accent-deep)}.worksheet h3{font-size:15px;letter-spacing:.4px;text-transform:uppercase;color:var(--accent-deep);border-bottom:1px solid var(--line);padding-bottom:4px;margin:18px 0 8px}.worksheet ul{margin:0;padding-left:20px}.worksheet li{margin-bottom:4px}.worksheet .future-text{line-height:1.55}.export-row{display:flex;gap:10px;justify-content:center;margin-top:8px}.export-btn{font-family:ui-sans-serif,system-ui,sans-serif;font-weight:600;font-size:14px;padding:11px 22px;border-radius:10px;border:none;background:var(--accent-deep);color:#fff;cursor:pointer}@media print{body{background:#fff}body *{visibility:hidden}.printable,.printable *{visibility:visible}.printable{position:absolute;left:0;top:0;width:100%;border:none;box-shadow:none;padding:0}.no-print{display:none!important}}