:root{color-scheme:light;--bg: #f5efe7;--bg-2: #ede2d3;--surface: rgba(255, 250, 243, .82);--surface-strong: #fffaf3;--surface-muted: rgba(255, 255, 255, .72);--line: rgba(60, 42, 21, .12);--line-strong: rgba(60, 42, 21, .2);--text: #20150d;--muted: #6d5a46;--accent: #b94f24;--accent-strong: #8d3715;--accent-soft: #f3d2bf;--success: #17745a;--danger: #a11f2a;--shadow: 0 24px 70px rgba(49, 30, 9, .14);font-family:IBM Plex Sans,Segoe UI,sans-serif}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;min-height:100vh;background:radial-gradient(circle at top left,rgba(185,79,36,.18),transparent 32%),radial-gradient(circle at 90% 10%,rgba(23,116,90,.12),transparent 24%),linear-gradient(135deg,var(--bg) 0%,var(--bg-2) 100%);color:var(--text)}a{color:inherit;text-decoration:none}button,input,textarea{font:inherit}button{cursor:pointer}.shell{min-height:100vh;display:grid;grid-template-columns:minmax(320px,380px) minmax(0,1fr)}.sidebar{padding:24px;display:grid;gap:18px;border-right:1px solid var(--line);background:#fffaf3ad;-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);overflow:auto}.brand{display:flex;align-items:center;gap:14px}.brand h1,.hero h2,.panel h3,.message strong,.attachment-card strong{font-family:Space Grotesk,Segoe UI,sans-serif;margin:0}.brand-mark{width:54px;height:54px;border-radius:18px;display:grid;place-items:center;background:linear-gradient(135deg,#24170f,#5c2e17);color:#fff8f2;font-size:1.35rem;font-weight:700;box-shadow:0 16px 30px #24170f38}.eyebrow{margin:0 0 6px;text-transform:uppercase;letter-spacing:.14em;font-size:.72rem;color:var(--muted)}.sidebar-card,.panel,.notice,.room-row,.message,.attachment-card{border:1px solid var(--line);border-radius:24px;background:var(--surface);box-shadow:var(--shadow)}.sidebar-card{padding:18px}.sidebar-status dl{margin:16px 0 0;display:grid;gap:12px}.sidebar-status dt{margin-bottom:4px;color:var(--muted);font-size:.8rem;letter-spacing:.08em;text-transform:uppercase}.sidebar-status dd{margin:0;font-weight:600}.inline-input{width:100%;border:1px solid var(--line);background:#ffffffd1;border-radius:14px;padding:10px 12px;color:var(--text)}.auth-card,.stack{display:grid;gap:12px}.panel-header{display:flex;justify-content:space-between;align-items:start;gap:12px}.panel-header.compact{align-items:center}.panel-header h3{font-size:1.25rem;line-height:1.1}.panel-note{margin:8px 0 0;color:var(--muted);line-height:1.5}.panel-header-actions{display:flex;gap:8px;flex-wrap:wrap;justify-content:flex-end}.segmented{display:inline-flex;padding:4px;border-radius:999px;background:#ffffffa3;border:1px solid var(--line)}.segmented button{border:0;border-radius:999px;padding:8px 12px;color:var(--muted);background:transparent}.segmented-active{background:linear-gradient(135deg,#281a12,#6a3318)!important;color:#fff8f2!important}.field{display:grid;gap:8px}.field span{font-size:.8rem;color:var(--muted);text-transform:uppercase;letter-spacing:.08em}.field input,.field textarea{width:100%;border:1px solid var(--line);background:#ffffffd6;color:var(--text);border-radius:16px;padding:12px 14px;min-height:46px}.field textarea{resize:vertical}.field-grow{grid-column:1 / -1}.button{border:1px solid transparent;border-radius:999px;padding:12px 16px;transition:transform .16s ease,box-shadow .16s ease,opacity .16s ease}.button:hover{transform:translateY(-1px)}.button:disabled{opacity:.55;cursor:not-allowed;transform:none}.button-primary{background:linear-gradient(135deg,var(--accent),var(--accent-strong));color:#fff8f3;box-shadow:0 16px 30px #b94f243d}.button-secondary{background:#fffc;border-color:var(--line);color:var(--text)}.button-ghost{background:transparent;border-color:var(--line);color:var(--text)}.button-danger{background:linear-gradient(135deg,#b12535,#7c1320);color:#fff7f3}.button-wide{width:100%}.notice{padding:12px 14px;background:#ffffffc2;color:var(--text)}.notice-error{border-color:#a11f2a47;background:#a11f2a14;color:#7f1220}.meta-pill,.status-chip{display:inline-flex;align-items:center;gap:10px;padding:8px 12px;border-radius:999px;border:1px solid var(--line);background:#ffffffb8;color:var(--muted);font-size:.84rem;font-weight:600}.status-chip{color:#135742;background:#17745a1f;border-color:#17745a29}.status-dot{width:10px;height:10px;border-radius:999px;background:#9da89f;box-shadow:0 0 0 6px #9da89f24}.status-dot-on{background:var(--success);box-shadow:0 0 0 6px #17745a29}.room-list{display:grid;gap:10px}.room-row{display:flex;justify-content:space-between;gap:12px;align-items:center;padding:14px 16px;text-align:left;background:#ffffffa3}.room-row:hover{border-color:var(--line-strong);transform:translateY(-1px)}.room-row-selected{background:linear-gradient(135deg,#b94f241f,#fffc);border-color:#b94f243d}.room-copy{display:grid;gap:4px}.room-copy p{margin:0;color:var(--muted)}.room-meta{display:grid;justify-items:end;gap:6px}.room-time{color:var(--muted);font-size:.8rem}.empty-state{padding:18px;border:1px dashed var(--line);border-radius:20px;background:#ffffff8f;color:var(--muted)}.empty-state strong{display:block;color:var(--text);margin-bottom:6px}.content{padding:28px;display:grid;gap:20px}.hero{display:flex;justify-content:space-between;gap:18px;align-items:end}.hero h2{margin:0;max-width:860px;font-size:clamp(2.1rem,4vw,4.1rem);line-height:.98}.hero-copy{max-width:720px;margin:16px 0 0;color:var(--muted);line-height:1.7;font-size:1.02rem}.hero-actions{display:flex;gap:10px;flex-wrap:wrap;justify-content:flex-end}.workspace{display:grid;grid-template-columns:minmax(0,1fr)}.active-room{padding:18px;min-height:calc(100vh - 220px);display:grid;grid-template-rows:auto minmax(0,1fr) auto;gap:16px}.message-column{display:grid;gap:12px;align-content:start;overflow:auto;padding-right:4px}.message{max-width:min(760px,78%);padding:14px 16px;display:grid;gap:10px}.message-out{margin-left:auto;background:linear-gradient(135deg,#fff1e6,#fce0cf)}.message-in{background:#ffffffd1}.message-topline{display:flex;justify-content:space-between;gap:12px;color:var(--muted);font-size:.82rem}.message p{margin:0;line-height:1.6}.message-meta{margin-top:4px;color:var(--muted);font-size:.82rem}.attachment-list{display:grid;gap:10px}.attachment-card{padding:12px 14px;background:#ffffffb8}.attachment-meta,.attachment-foot{display:flex;justify-content:space-between;gap:12px;align-items:center}.attachment-meta{margin-bottom:8px;color:var(--muted)}.attachment-meta span,.attachment-foot span{font-size:.84rem;color:var(--muted)}.attachment-foot a{color:var(--accent-strong);font-weight:600}.composer{display:grid;grid-template-columns:minmax(0,1.4fr) minmax(220px,.7fr);gap:12px;align-items:start}.selected-files{grid-column:1 / -1;display:flex;flex-wrap:wrap;gap:8px}.file-chip{display:inline-flex;align-items:center;gap:8px;padding:8px 12px;border-radius:999px;border:1px solid var(--line);background:#ffffffbd;color:var(--muted);font-size:.84rem}.composer-actions{grid-column:1 / -1;display:flex;gap:10px;flex-wrap:wrap}@media(max-width:1180px){.shell{grid-template-columns:1fr}.sidebar{border-right:none;border-bottom:1px solid var(--line)}.active-room{min-height:auto}}@media(max-width:760px){.sidebar,.content{padding:18px}.hero{flex-direction:column;align-items:start}.hero-actions{justify-content:flex-start}.composer{grid-template-columns:1fr}.message{max-width:100%}.panel-header{flex-direction:column;align-items:start}.panel-header-actions{justify-content:flex-start}}