:root{--wood-50:#fbf3e4;--wood-100:#f5e4c3;--wood-200:#ead1a0;--wood-300:#dcb877;--ink:#3b2a1e;--ink-muted:#93764f;--tip:#e2435a;--tip-dark:#c22c42;--tip-light:#fbe3e7;--white:#fff;--bg:var(--wood-50);--panel:var(--white);--border:var(--wood-200);--accent:var(--tip);--bubble-me:var(--tip);--bubble-them:var(--wood-100);--text:var(--ink);--text-dim:var(--ink-muted);--radius-lg:18px;--radius:12px;--radius-sm:8px;--shadow-sm:0 1px 3px rgba(120,72,30,.08);--shadow-md:0 8px 24px rgba(120,72,30,.14)}*{box-sizing:border-box}body,html{height:100%;margin:0;padding:0}body{background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;font-size:14px}a{color:var(--tip)}button,input{font-family:inherit}button{cursor:pointer}::-webkit-scrollbar{width:10px;height:10px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:var(--wood-300);border-radius:10px}::-webkit-scrollbar-thumb:hover{background:var(--tip)}.auth-page{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:24px;background:var(--wood-100)}.auth-card{width:100%;max-width:380px;background:var(--white);border-radius:var(--radius-lg);border-top:5px solid var(--tip);box-shadow:var(--shadow-md);padding:36px 32px 28px;text-align:center}.auth-logo{width:84px;height:84px;object-fit:contain;margin:0 auto 18px;display:block}.auth-card h1{margin:0 0 22px;font-size:19px;font-weight:600;color:var(--ink)}.auth-card input{width:100%;padding:12px 14px;margin-bottom:12px;border-radius:var(--radius-sm);border:1px solid var(--border);background:var(--wood-50);color:var(--ink);font-size:14px;outline:none;transition:border-color .15s ease,background .15s ease}.auth-card input:focus{border-color:var(--tip);background:var(--white)}.auth-card button[type=submit]{width:100%;padding:12px 14px;border-radius:var(--radius-sm);border:none;background:var(--tip);color:#fff;font-weight:600;font-size:14px;margin-top:4px;transition:background .15s ease}.auth-card button[type=submit]:hover{background:var(--tip-dark)}.auth-error{color:var(--tip-dark);font-size:13px;margin:-4px 0 12px;text-align:left}.auth-switch{margin-top:18px;font-size:13px;color:var(--text-dim)}.auth-switch a{color:var(--tip);font-weight:600;text-decoration:none}.auth-switch a:hover{text-decoration:underline}.app-shell{height:100vh;display:flex;flex-direction:column;background:var(--bg)}.navbar{height:60px;flex:none;display:flex;align-items:center;gap:12px;padding:0 20px;background:var(--tip);box-shadow:var(--shadow-sm)}.navbar-logo{height:36px;width:auto;object-fit:contain}.navbar-title{font-weight:700;letter-spacing:.3px;font-size:16px;color:#fff}.navbar-spacer{flex:1 1}.navbar-user{font-size:13px;color:hsla(0,0%,100%,.85);margin-right:8px}.navbar button{background:hsla(0,0%,100%,.15);color:#fff;border:1px solid hsla(0,0%,100%,.4);border-radius:999px;padding:7px 16px;font-size:13px;font-weight:600;transition:background .15s ease}.navbar button:hover{background:hsla(0,0%,100%,.28)}.app-body{flex:1 1;display:flex;min-height:0;padding:16px;gap:16px}.sidebar{width:230px;flex:none;background:var(--panel);border-radius:var(--radius-lg);box-shadow:var(--shadow-sm);overflow-y:auto;padding:16px 0}.sidebar-section-title{font-size:11px;font-weight:700;text-transform:uppercase;letter-spacing:.6px;color:var(--text-dim);padding:14px 18px 6px}.sidebar-link{display:flex;align-items:center;gap:10px;padding:9px 18px;text-decoration:none;color:var(--text);font-size:14px;transition:background .15s ease,color .15s ease}.sidebar-link.active,.sidebar-link:hover{background:var(--tip-light);color:var(--tip-dark)}.sidebar-avatar{width:34px;height:34px;border-radius:50%;background:var(--wood-100);border:1px solid var(--border);display:flex;align-items:center;justify-content:center;font-size:12px;font-weight:700;color:var(--ink);flex:none;overflow:hidden}.sidebar-avatar img{width:100%;height:100%;object-fit:cover}.sidebar-actions{padding:6px 14px;display:flex;gap:8px}.sidebar-actions a,.sidebar-actions button{flex:1 1;text-align:center;font-size:12px;padding:8px 6px;border-radius:var(--radius-sm);background:var(--wood-50);color:var(--text);text-decoration:none;border:1px solid var(--border);transition:background .15s ease,border-color .15s ease,color .15s ease}.sidebar-actions a:hover,.sidebar-actions button:hover{background:var(--tip-light);border-color:var(--tip);color:var(--tip-dark)}.main-content{min-width:0;background:var(--panel);border-radius:var(--radius-lg);box-shadow:var(--shadow-sm);overflow:hidden}.chat-window,.main-content{flex:1 1;display:flex;flex-direction:column}.chat-window{min-height:0}.chat-header{padding:16px 22px;font-weight:700;font-size:15px;color:var(--ink);border-bottom:1px solid var(--border)}.chat-messages{flex:1 1;overflow-y:auto;padding:20px 22px;display:flex;flex-direction:column;gap:16px}.message-row{display:flex;align-items:flex-end;gap:10px;max-width:72%}.message-row.me{align-self:flex-end;flex-direction:row-reverse}.message-row.them{align-self:flex-start;flex-direction:row}.message-avatar{width:42px;height:42px;flex:none;border-radius:50%;background:var(--wood-100);border:1px solid var(--border);display:flex;align-items:center;justify-content:center;font-size:15px;font-weight:700;color:var(--ink);overflow:hidden}.message-avatar img{width:100%;height:100%;object-fit:cover}.message-content-col{display:flex;flex-direction:column;min-width:0}.message-row.me .message-content-col{align-items:flex-end}.message-row.them .message-content-col{align-items:flex-start}.message-sender{font-size:12px;font-weight:600;color:var(--text-dim);margin-bottom:4px;padding:0 4px}.message-bubble{background:var(--bubble-them);border-radius:var(--radius);padding:10px 14px;font-size:14px;line-height:1.45;word-break:break-word;color:var(--ink)}.message-row.me .message-bubble{background:var(--bubble-me);color:#fff}.message-reply-quote{border-left:3px solid var(--tip);padding:5px 9px;margin-bottom:6px;font-size:12px;color:var(--text-dim);background:rgba(59,42,30,.05);border-radius:var(--radius-sm);cursor:default}.message-row.me .message-reply-quote{color:hsla(0,0%,100%,.9);background:hsla(0,0%,100%,.18)}.message-image{max-width:220px;max-height:220px;border-radius:var(--radius-sm);margin-top:6px;cursor:zoom-in;display:block}.message-actions{display:flex;gap:10px;margin-top:4px;padding:0 4px}.message-actions button{background:none;border:none;color:var(--text-dim);font-size:11px;font-weight:600;padding:0}.message-actions button:hover{color:var(--tip)}.reply-preview{display:flex;align-items:center;justify-content:space-between;background:var(--tip-light);border-left:3px solid var(--tip);padding:8px 14px;margin:0 22px 10px;border-radius:var(--radius-sm);font-size:12px;color:var(--tip-dark)}.reply-preview button{background:none;border:none;color:var(--tip-dark);font-size:15px}.chat-input-bar{display:flex;align-items:center;gap:10px;padding:16px 22px;border-top:1px solid var(--border)}.chat-input-bar input[type=text]{flex:1 1;padding:11px 16px;border-radius:999px;border:1px solid var(--border);background:var(--wood-50);color:var(--ink);font-size:14px;outline:none;transition:border-color .15s ease,background .15s ease}.chat-input-bar input[type=text]:focus{border-color:var(--tip);background:var(--white)}.chat-input-bar button.send-btn{background:var(--tip);border:none;color:#fff;border-radius:999px;padding:11px 22px;font-weight:600;font-size:13px;transition:background .15s ease}.chat-input-bar button.send-btn:hover{background:var(--tip-dark)}.attach-btn{background:var(--wood-50);border:1px solid var(--border);color:var(--ink);border-radius:50%;width:42px;height:42px;font-size:18px;flex:none;transition:background .15s ease,border-color .15s ease,color .15s ease}.attach-btn:hover{background:var(--tip-light);border-color:var(--tip);color:var(--tip-dark)}.image-preview-chip{display:flex;align-items:center;gap:8px;margin:0 22px 10px;font-size:12px;color:var(--text-dim)}.image-preview-chip img{width:40px;height:40px;border-radius:var(--radius-sm);object-fit:cover;border:1px solid var(--border)}.lightbox-backdrop{position:fixed;inset:0;background:rgba(59,42,30,.75);display:flex;align-items:center;justify-content:center;z-index:1000;cursor:zoom-out}.lightbox-backdrop img{max-width:90vw;max-height:90vh;border-radius:var(--radius);box-shadow:var(--shadow-md)}.page-content{padding:28px;max-width:640px;overflow-y:auto}.page-content h2{margin-top:0;font-size:19px;color:var(--ink)}.card{background:var(--panel);border-radius:var(--radius-lg);box-shadow:var(--shadow-sm);padding:18px;margin-bottom:16px}.row{display:flex;align-items:center;gap:12px;padding:10px 0;border-bottom:1px solid var(--border)}.row:last-child{border-bottom:none}.row-name{flex:1 1;font-size:14px;color:var(--ink)}.pill-btn{background:var(--tip);border:none;border-radius:999px;color:#fff;padding:7px 16px;font-size:12px;font-weight:600;transition:background .15s ease}.pill-btn:hover{background:var(--tip-dark)}.pill-btn.secondary{background:var(--wood-100);color:var(--ink)}.pill-btn.secondary:hover{background:var(--wood-200)}.inline-form{display:flex;gap:8px;margin-bottom:16px}.inline-form input{flex:1 1;padding:11px 14px;border-radius:var(--radius-sm);border:1px solid var(--border);background:var(--wood-50);color:var(--ink);outline:none;transition:border-color .15s ease,background .15s ease}.inline-form input:focus{border-color:var(--tip);background:var(--white)}.profile-avatar-lg{width:120px;height:120px;border-radius:50%;object-fit:cover;background:var(--wood-100);display:block;margin-bottom:16px;border:3px solid var(--white);box-shadow:var(--shadow-sm)}.group-username-list{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:14px}.username-chip{background:var(--wood-100);border-radius:999px;padding:6px 12px;font-size:12px;color:var(--ink);display:flex;align-items:center;gap:6px}.username-chip button{background:none;border:none;color:var(--text-dim);font-size:13px}.hint{font-size:12px;color:var(--text-dim);margin-top:-8px;margin-bottom:14px}