*,:after,:before{box-sizing:border-box;margin:0;padding:0}:root{--bg:#0f0f11;--surface:#18181b;--border:#27272a;--text:#e4e4e7;--muted:#71717a;--accent:#6366f1;--accent-hover:#818cf8;--green:#10b981;--red:#ef4444;--yellow:#f59e0b}body{background:var(--bg);color:var(--text);font-family:system-ui,-apple-system,sans-serif;font-size:15px;line-height:1.6}a{color:var(--accent);text-decoration:none}a:hover{color:var(--accent-hover)}button{cursor:pointer;border:none;border-radius:6px;padding:8px 16px;font-size:14px;font-weight:500;transition:background .15s}.btn-primary{background:var(--accent);color:#fff}.btn-primary:hover{background:var(--accent-hover)}.btn-ghost{background:transparent;color:var(--muted);border:1px solid var(--border)}.btn-ghost:hover{color:var(--text);border-color:var(--muted)}input,textarea{background:var(--surface);border:1px solid var(--border);border-radius:6px;color:var(--text);font-family:inherit;font-size:14px;padding:8px 12px;width:100%;outline:none;transition:border-color .15s}input:focus,textarea:focus{border-color:var(--accent)}.app-shell{display:grid;grid-template-columns:220px 1fr;min-height:100vh}.sidebar{background:var(--surface);border-right:1px solid var(--border);padding:24px 16px;display:flex;flex-direction:column;gap:4px}.sidebar-title{font-size:13px;font-weight:600;color:var(--muted);text-transform:uppercase;letter-spacing:.08em;padding:0 8px;margin-bottom:8px}.nav-link{display:flex;align-items:center;gap:8px;padding:8px 10px;border-radius:6px;color:var(--muted);font-size:14px;font-weight:500;transition:all .15s}.nav-link.active,.nav-link:hover{background:var(--border);color:var(--text)}.main-content{padding:32px;overflow-y:auto}.card{background:var(--surface);border:1px solid var(--border);border-radius:10px;padding:16px;transition:border-color .15s}.card:hover{border-color:var(--muted)}.badge{display:inline-flex;align-items:center;font-size:11px;font-weight:500;padding:2px 8px;border-radius:999px;background:var(--border);color:var(--muted)}.chat-window{display:flex;flex-direction:column;height:calc(100vh - 64px)}.chat-messages{flex:1 1;overflow-y:auto;display:flex;flex-direction:column;gap:16px;padding:16px 0}.message{max-width:80%;padding:12px 16px;border-radius:12px;font-size:14px;line-height:1.5;white-space:pre-wrap}.message.user{align-self:flex-end;background:var(--accent);color:#fff;border-bottom-right-radius:4px}.message.assistant{align-self:flex-start;background:var(--surface);border:1px solid var(--border);border-bottom-left-radius:4px}.chat-input-row{display:flex;gap:8px;padding-top:16px;border-top:1px solid var(--border)}.berlin-footer{display:inline-flex;align-items:center;gap:4px;font-size:12px;color:var(--muted);cursor:default;-webkit-user-select:none;-moz-user-select:none;user-select:none;padding:4px 0}.berlin-hearts{position:relative;display:inline-block;width:64px;height:24px}.berlin-hearts span{position:absolute;left:0;top:50%;transform:translateY(-50%);transition:opacity .5s ease-out,transform .5s ease-out;line-height:1}.berlin-hearts .heart-default{opacity:1}.berlin-hearts .heart-pink{opacity:0}.berlin-hearts .heart-blue,.berlin-hearts .heart-purple{opacity:0;transform:translateY(-50%) translateX(0)}.berlin-footer:hover .heart-default{opacity:0}.berlin-footer:hover .heart-pink{opacity:1}.berlin-footer:hover .heart-purple{opacity:1;transform:translateY(-50%) translateX(20px)}.berlin-footer:hover .heart-blue{opacity:1;transform:translateY(-50%) translateX(40px)}