:root{--bg:#f4f5f7;--card:#fff;--text:#1a1d23;--muted:#6b7280;--border:#e2e4e9;--accent:#4f46e5;--accent-hover:#4338ca;--accent-soft:#eef2ff;--danger:#dc2626;--danger-soft:#fef2f2;--radius:12px;--shadow:0 1px 3px #00000014}@media (prefers-color-scheme:dark){:root{--bg:#111318;--card:#1c1f26;--text:#e8eaf0;--muted:#9aa1ad;--border:#2c303a;--accent:#818cf8;--accent-hover:#a5b4fc;--accent-soft:#26294a;--danger:#f87171;--danger-soft:#3a2222;--shadow:0 1px 3px #0006}}*{box-sizing:border-box}body{background:var(--bg);color:var(--text);margin:0;font-family:system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Noto Sans,Ubuntu,Cantarell,Helvetica Neue,sans-serif;line-height:1.5}.page{max-width:760px;margin:0 auto;padding:24px 16px 64px}.page.narrow{max-width:480px}.boot{text-align:center;color:var(--muted);padding:48px}.hero{text-align:center;margin:24px 0 32px}.hero h1{margin:0 0 8px;font-size:2.2rem}.hero p{color:var(--muted);max-width:520px;margin:0 auto}.card-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:16px}.card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);padding:20px}.card h2{margin:0 0 8px;font-size:1.15rem}.card.center{text-align:center}.muted{color:var(--muted);font-size:.92rem}.banner{background:var(--accent-soft);border:1px solid var(--border);border-radius:var(--radius);margin-bottom:16px;padding:10px 14px;font-size:.95rem}.banner-error{background:var(--danger-soft);color:var(--danger)}.btn{display:inline-flex;cursor:pointer;text-decoration:none;color:inherit;background:0 0;border:1px solid #0000;border-radius:10px;justify-content:center;align-items: center;gap:6px;padding:9px 16px;transition:background .15s,border-color .15s;font-size:.95rem;font-weight:600}.btn:disabled{opacity:.5;cursor:default}.btn.primary{background:var(--accent);color:#fff}.btn.primary:not(:disabled):hover{background:var(--accent-hover)}.btn.ghost{border-color:var(--border)}.btn.ghost:hover{background:var(--accent-soft)}.btn.danger{border-color:var(--danger);color:var(--danger)}.btn.danger:hover{background:var(--danger-soft)}.icon-btn{cursor:pointer;color:var(--muted);background:0 0;border:none;border-radius:8px;padding:6px;font-size:1rem}.icon-btn:hover{background:var(--accent-soft)}.btn-row{display:flex;flex-wrap:wrap;justify-content:center;gap:8px}.join-form{display:flex;gap:8px}.code-input{border:1px solid var(--border);letter-spacing:.12em;text-transform:uppercase;background:var(--bg);color:var(--text);border-radius:10px;flex:1;min-width:0;padding:9px 12px;font-family:ui-monospace,SF Mono,Consolas,monospace;font-size:1.05rem}.code-input:focus{outline:2px solid var(--accent);border-color:#0000}.divider{display:flex;color:var(--muted);align-items: center;gap:12px;margin:16px 0;font-size:.85rem}.divider:before,.divider:after{content:"";border-top:1px solid var(--border);flex:1}.pair-box{display:flex;text-align:center;flex-direction:column;align-items: center;gap:12px}.qr{background:#fff;border-radius:10px;padding:8px}.qr-placeholder{background:var(--border);animation:pulse 1.2s infinite alternate}@keyframes pulse{0%{opacity:.5}to{opacity:1}}.qr-modal{display:flex;text-align:center;flex-direction:column;align-items: center;gap:12px}.session-head{display:flex;flex-wrap:wrap;justify-content:space-between;align-items: center;gap:12px;margin-bottom:20px}.session-title{display:flex;align-items: center;gap:12px}.session-title h1{margin:0;font-size:1.4rem}.code-chip{border:1px solid var(--border);background:var(--card);letter-spacing:.08em;cursor:pointer;color:var(--text);border-radius:10px;padding:6px 12px;font-family:ui-monospace,SF Mono,Consolas,monospace;font-size:1.05rem;font-weight:700}.code-chip:hover{background:var(--accent-soft)}.chip-qr{color:var(--accent);margin-left:4px}.session-actions{display:flex;flex-wrap:wrap;align-items: center;gap:8px}.ttl{white-space:nowrap}.composer{display:flex;flex-direction:column;gap:14px;margin-bottom:20px}.dropzone{border:2px dashed var(--border);border-radius:var(--radius);text-align:center;color:var(--muted);cursor:pointer;padding:26px 16px;transition:border-color .15s,background .15s}.dropzone:hover{border-color:var(--accent);background:var(--accent-soft)}.note-row{display:flex;flex-direction:column;gap:8px}.note-row textarea{border:1px solid var(--border);font:inherit;resize:vertical;background:var(--bg);color:var(--text);border-radius:10px;width:100%;padding:10px 12px}.note-row textarea:focus{outline:2px solid var(--accent);border-color:#0000}.note-buttons{display:flex;flex-wrap:wrap;gap:8px}.items{display:flex;flex-direction:column;gap:10px}.empty{text-align:center;color:var(--muted);border:2px dashed var(--border);border-radius:var(--radius);padding:40px 16px}.item{display:flex;align-items: flex-start;gap:14px;padding:14px 16px}.item-icon{display:flex;background:var(--accent-soft);border-radius:10px;flex-shrink:0;justify-content:center;align-items: center;width:48px;height:48px;font-size:1.6rem}.item-thumb{object-fit:cover;border:1px solid var(--border);border-radius:10px;flex-shrink:0;width:48px;height:48px}.item-body{flex:1;min-width:0}.item-title{word-break:break-word;font-weight:600}.item-meta{color:var(--muted);font-size:.85rem}.item-text{font:inherit;white-space:pre-wrap;word-break:break-word;overflow-y:auto;max-height:180px;margin:4px 0 0}.item-actions{display:flex;flex-shrink:0;align-items: center;gap:4px}.session-foot{text-align:center;margin-top:20px}.drop-overlay{position:fixed;display:flex;z-index:50;pointer-events:none;background:#00000073;justify-content:center;align-items: center;inset:0}.drop-overlay-inner{background:var(--card);border:3px dashed var(--accent);border-radius:16px;padding:40px 56px;font-size:1.3rem;font-weight:700}.toast{position:fixed;background:var(--text);color:var(--bg);box-shadow:var(--shadow);z-index:60;border-radius:10px;max-width:min(90vw,480px);padding:10px 18px;font-size:.95rem;bottom:24px;left:50%;transform:translate(-50%)}.modal-backdrop{position:fixed;display:flex;z-index:40;background:#00000080;justify-content:center;align-items: center;padding:16px;inset:0}.modal{background:var(--card);border-radius:16px;width:100%;max-width:420px;padding:20px 24px 24px;box-shadow:0 10px 40px #0000004d}.modal-head{display:flex;justify-content:space-between;align-items: center;margin-bottom:12px}.modal-head h2{margin:0;font-size:1.15rem}@media (max-width:540px){.session-head{flex-direction:column;align-items:stretch}.session-title,.session-actions{justify-content:space-between}.item{flex-wrap:wrap}.item-actions{justify-content:flex-end;width:100%}}