* { box-sizing: border-box; margin: 0; padding: 0; }
body { font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", monospace;
       background: #0f1117; color: #d8dde6; font-size: 13px; }
.hidden { display: none !important; }
.muted { color: #6b7280; font-size: 12px; }
.msg { color: #f87171; font-size: 12px; margin-top: 6px; }

/* login */
#login { max-width: 320px; margin: 100px auto; padding: 24px; background: #181c25;
         border: 1px solid #2a2f3a; border-radius: 6px; }
#login h2 { margin-bottom: 16px; }
#login input { width: 100%; padding: 8px; margin-bottom: 8px; background: #0f1117;
               border: 1px solid #2a2f3a; color: #d8dde6; border-radius: 4px; }
.row { display: flex; gap: 6px; margin-top: 6px; }
button { background: #2563eb; color: white; border: none; padding: 6px 12px;
         border-radius: 4px; cursor: pointer; font-size: 13px; }
button:hover { background: #1d4ed8; }
button.ghost { background: transparent; border: 1px solid #2a2f3a; color: #6b7280; }
button.ghost:hover { color: #d8dde6; }

/* main */
#main { height: 100vh; display: flex; flex-direction: column; }
#main header { padding: 8px 12px; background: #181c25; border-bottom: 1px solid #2a2f3a;
               display: flex; gap: 12px; align-items: center; }
#main main { flex: 1; display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 1px;
             background: #2a2f3a; overflow: hidden; }
#main section { background: #0f1117; padding: 12px; overflow: auto; }
#main h3 { font-size: 12px; color: #6b7280; margin-bottom: 8px; text-transform: uppercase; }
#main h4 { font-size: 11px; color: #6b7280; margin: 12px 0 4px; text-transform: uppercase; }

/* chat */
#chat_log { height: calc(100vh - 280px); overflow: auto; padding: 6px;
            background: #181c25; border-radius: 4px; }
.msg-bubble { padding: 6px 10px; margin-bottom: 4px; border-radius: 4px;
              white-space: pre-wrap; word-break: break-word; }
.msg-user { background: #1e3a8a; }
.msg-assistant { background: #181c25; border-left: 2px solid #2563eb; }
.msg-tool { background: #181c25; color: #6b7280; font-size: 11px; }
.chat-input { margin-top: 8px; display: flex; gap: 4px; }
.chat-input textarea { flex: 1; min-height: 50px; resize: vertical; padding: 6px;
                       background: #181c25; border: 1px solid #2a2f3a; color: #d8dde6;
                       border-radius: 4px; font-family: inherit; font-size: 13px; }

/* spec */
#spec_json { width: 100%; height: calc(100vh - 280px); padding: 8px; background: #181c25;
             border: 1px solid #2a2f3a; color: #d8dde6; border-radius: 4px;
             font-family: monospace; font-size: 12px; resize: none; }
#symbol { padding: 6px; background: #181c25; color: #d8dde6; border: 1px solid #2a2f3a;
          border-radius: 4px; }

/* results */
#summary { background: #181c25; padding: 8px; border-radius: 4px; font-size: 12px; }
#summary .k { color: #6b7280; }
#summary .v { color: #d8dde6; font-weight: 600; }
#summary .grid { display: grid; grid-template-columns: 1fr 1fr; gap: 4px 12px; }
#trades { font-size: 11px; max-height: 250px; overflow: auto;
          background: #181c25; padding: 6px; border-radius: 4px; }
#trades table { width: 100%; border-collapse: collapse; }
#trades th, #trades td { padding: 2px 4px; text-align: left;
                         border-bottom: 1px solid #2a2f3a; }
#trades th { color: #6b7280; position: sticky; top: 0; background: #181c25; }
.pnl-pos { color: #10b981; }
.pnl-neg { color: #f87171; }
#advice { background: #181c25; padding: 8px; border-radius: 4px; font-size: 12px;
          white-space: pre-wrap; }