:root{--bg-color:#0d1117;--panel-bg:#161b22b3;--border-color:#ffffff1a;--text-primary:#e6edf3;--text-secondary:#8b949e;--accent-color:#58a6ff;--accent-hover:#3182ce;--glass-shadow:0 8px 32px 0 #0000005e;--glass-border:1px solid #ffffff0d}*{box-sizing:border-box;margin:0;padding:0}body{background:var(--bg-color);color:var(--text-primary);background-image:radial-gradient(circle at 15%,#58a6ff14,#0000 25%),radial-gradient(circle at 85% 30%,#c858ff0d,#0000 25%);flex-direction:column;height:100vh;font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Open Sans,Helvetica Neue,sans-serif;display:flex;overflow:hidden}.app-container{flex-direction:column;width:100%;max-width:1400px;height:100vh;margin:0 auto;padding:1rem;display:flex}.app-header{background:var(--panel-bg);-webkit-backdrop-filter:blur(12px);border:var(--glass-border);box-shadow:var(--glass-shadow);border-radius:16px;flex-shrink:0;justify-content:space-between;align-items:center;margin-bottom:1rem;padding:1rem 2rem;display:flex}.app-header h1{background:linear-gradient(90deg,#58a6ff,#c858ff);-webkit-text-fill-color:transparent;-webkit-background-clip:text;background-clip:text;font-size:1.5rem;font-weight:600}.api-key-input input{color:#fff;background:#0000004d;border:1px solid #ffffff1a;border-radius:8px;outline:none;width:250px;padding:.5rem 1rem;font-family:inherit;transition:all .2s}.api-key-input input:focus{border-color:var(--accent-color);box-shadow:0 0 0 2px #58a6ff33}.app-main{flex:1;gap:1rem;min-height:0;display:flex}.chat-container{background:var(--panel-bg);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);border:var(--glass-border);box-shadow:var(--glass-shadow);border-radius:16px;flex-direction:column;flex:1;max-width:500px;display:flex;overflow:hidden}.messages{flex-direction:column;flex:1;gap:1rem;padding:1.5rem;display:flex;overflow-y:auto}.welcome-message{text-align:center;color:var(--text-secondary);margin:auto}.welcome-message h2{color:var(--text-primary);margin-bottom:.5rem}.message{width:100%;display:flex}.message.user{justify-content:flex-end}.message.model{justify-content:flex-start}.message-content{border-radius:12px;max-width:80%;padding:.75rem 1rem;line-height:1.5}.message.user .message-content{background:var(--accent-color);color:#fff;border-bottom-right-radius:4px}.message.model .message-content{background:#ffffff0d;border:1px solid #ffffff1a;border-bottom-left-radius:4px}.input-area{background:#0003;border-top:1px solid #ffffff0d;gap:.5rem;padding:1rem;display:flex}.chat-input{color:#fff;background:#ffffff08;border:1px solid #ffffff1a;border-radius:8px;outline:none;flex:1;padding:.75rem 1rem;font-family:inherit;transition:all .2s}.chat-input:focus{border-color:var(--accent-color);background:#ffffff0d}.send-btn{background:var(--accent-color);color:#fff;cursor:pointer;border:none;border-radius:8px;padding:0 1.5rem;font-weight:600;transition:background .2s}.send-btn:hover{background:var(--accent-hover)}.board-container{background:var(--panel-bg);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);border:var(--glass-border);box-shadow:var(--glass-shadow);border-radius:16px;flex:2;justify-content:center;align-items:center;display:flex;position:relative;overflow:hidden}.board-placeholder{color:var(--text-secondary);text-align:center;border:2px dashed #ffffff1a;border-radius:16px;padding:2rem;font-size:1.2rem}