:root {
  --bg: #0b0e14;
  --panel: #11161f;
  --panel-2: #161c28;
  --border: #232c3b;
  --text: #e6edf6;
  --text-dim: #8b97a8;
  --accent: #3da9fc;
  --accent-2: #5eead4;
  --green: #34d399;
  --amber: #fbbf24;
  --red: #f87171;
  --radius: 12px;
  font-synthesis: none;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  height: 100%;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, sans-serif;
  font-size: 15px;
  line-height: 1.6;
}

.app {
  display: grid;
  grid-template-columns: 380px 1fr;
  height: 100vh;
  overflow: hidden;
}

/* ---------------- 左侧输入面板 ---------------- */
.panel {
  background: var(--panel);
  border-right: 1px solid var(--border);
  padding: 24px;
  overflow-y: auto;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 24px;
}
.brand-mark {
  width: 40px; height: 40px;
  display: grid; place-items: center;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  border-radius: 10px;
  color: #06121f; font-size: 20px; font-weight: 800;
}
.brand h1 { font-size: 17px; margin: 0; font-weight: 700; }
.brand p { font-size: 12px; margin: 2px 0 0; color: var(--text-dim); }

.form { display: flex; flex-direction: column; gap: 16px; }
.field { display: flex; flex-direction: column; gap: 6px; }
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }

label {
  font-size: 13px; font-weight: 600; color: var(--text);
  display: flex; align-items: center; gap: 6px;
}
.req {
  font-size: 10px; font-weight: 600; color: var(--accent);
  background: rgba(61,169,252,.12); padding: 1px 6px; border-radius: 6px;
}
.hint { font-size: 11px; color: var(--text-dim); margin: 0; }

input, select, textarea {
  width: 100%;
  background: var(--panel-2);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 8px;
  padding: 9px 11px;
  font-size: 14px;
  font-family: inherit;
  transition: border-color .15s, box-shadow .15s;
}
textarea { resize: vertical; }
input:focus, select:focus, textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(61,169,252,.15);
}
input::placeholder, textarea::placeholder { color: #5b6675; }

.more summary {
  cursor: pointer; font-size: 13px; font-weight: 600;
  color: var(--accent); padding: 6px 0; user-select: none;
}
.more summary:hover { color: var(--accent-2); }
.more[open] { display: flex; flex-direction: column; gap: 14px; padding-bottom: 4px; }
.more[open] summary { margin-bottom: 4px; }

.btn-primary {
  background: linear-gradient(135deg, var(--accent), #2563eb);
  color: #fff; border: none; border-radius: 9px;
  padding: 12px; font-size: 15px; font-weight: 700;
  cursor: pointer; transition: transform .08s, opacity .15s;
}
.btn-primary:hover { opacity: .92; }
.btn-primary:active { transform: scale(.985); }
.btn-primary:disabled { opacity: .5; cursor: not-allowed; }

.btn-stop {
  background: rgba(248,113,113,.12); color: var(--red);
  border: 1px solid rgba(248,113,113,.3); border-radius: 9px;
  padding: 10px; font-size: 14px; font-weight: 600; cursor: pointer;
}

.disclaimer {
  font-size: 11px; color: var(--text-dim); line-height: 1.5;
  background: var(--panel-2); border: 1px solid var(--border);
  border-radius: 8px; padding: 10px; margin: 4px 0 0;
}

/* ---------------- 右侧结果区 ---------------- */
.result-area {
  position: relative;
  overflow-y: auto;
  padding: 32px 40px 80px;
}

.empty-state {
  max-width: 620px; margin: 8vh auto 0; text-align: center;
}
.empty-icon { font-size: 56px; }
.empty-state h2 { font-size: 22px; margin: 12px 0 8px; }
.empty-state p { color: var(--text-dim); font-size: 14px; }
.examples { margin-top: 24px; display: flex; gap: 8px; justify-content: center; align-items: center; flex-wrap: wrap; }
.examples > span { color: var(--text-dim); font-size: 13px; }
.chip {
  background: var(--panel-2); border: 1px solid var(--border); color: var(--text);
  border-radius: 999px; padding: 6px 14px; font-size: 13px; font-weight: 600; cursor: pointer;
  transition: border-color .15s, color .15s;
}
.chip:hover { border-color: var(--accent); color: var(--accent); }

.status-bar {
  position: sticky; top: 0; z-index: 5;
  display: flex; align-items: center; gap: 12px;
  background: var(--panel-2); border: 1px solid var(--border);
  border-radius: 10px; padding: 12px 16px; margin-bottom: 20px;
  font-size: 14px;
}
.status-bar.searching { border-color: rgba(94,234,212,.4); }
.spinner {
  width: 16px; height: 16px; border-radius: 50%;
  border: 2px solid var(--border); border-top-color: var(--accent);
  animation: spin .7s linear infinite; flex-shrink: 0;
}
@keyframes spin { to { transform: rotate(360deg); } }
.model-badge {
  margin-left: auto; font-size: 11px; color: var(--text-dim);
  background: var(--panel); border: 1px solid var(--border);
  padding: 3px 9px; border-radius: 6px;
}

.done-bar {
  display: flex; align-items: center; gap: 14px;
  margin-top: 24px; padding-top: 16px; border-top: 1px solid var(--border);
  font-size: 12px; color: var(--text-dim);
}
.btn-ghost {
  margin-left: auto; background: var(--panel-2); border: 1px solid var(--border);
  color: var(--text); border-radius: 8px; padding: 7px 14px; font-size: 13px;
  font-weight: 600; cursor: pointer;
}
.btn-ghost:hover { border-color: var(--accent); color: var(--accent); }

/* ---------------- Markdown 渲染 ---------------- */
.markdown { max-width: 920px; }
.markdown h1, .markdown h2, .markdown h3, .markdown h4 {
  line-height: 1.3; margin: 1.4em 0 .6em; font-weight: 700;
}
.markdown h1 { font-size: 26px; }
.markdown h2 {
  font-size: 20px; padding-bottom: 6px; border-bottom: 1px solid var(--border);
  color: var(--accent);
}
.markdown h3 { font-size: 17px; color: var(--accent-2); }
.markdown h4 { font-size: 15px; }
.markdown p { margin: .6em 0; }
.markdown ul, .markdown ol { padding-left: 22px; margin: .5em 0; }
.markdown li { margin: .25em 0; }
.markdown strong { color: #fff; }
.markdown a { color: var(--accent); }
.markdown hr { border: none; border-top: 1px solid var(--border); margin: 1.6em 0; }
.markdown code {
  background: var(--panel-2); border: 1px solid var(--border);
  padding: 1px 6px; border-radius: 5px; font-size: 13px;
  font-family: "SF Mono", "Cascadia Code", Menlo, Consolas, monospace;
}
.markdown pre {
  background: #0d1219; border: 1px solid var(--border);
  border-radius: 10px; padding: 14px 16px; overflow-x: auto; font-size: 13px;
}
.markdown pre code { background: none; border: none; padding: 0; }

.markdown table {
  border-collapse: collapse; width: 100%; margin: 1em 0;
  font-size: 13.5px; display: block; overflow-x: auto;
}
.markdown thead { background: var(--panel-2); }
.markdown th, .markdown td {
  border: 1px solid var(--border); padding: 8px 12px; text-align: left;
  vertical-align: top;
}
.markdown th { font-weight: 700; color: var(--text); white-space: nowrap; }
.markdown tbody tr:nth-child(even) { background: rgba(255,255,255,.015); }

.markdown blockquote {
  border-left: 3px solid var(--accent); margin: 1em 0; padding: 4px 16px;
  background: var(--panel-2); border-radius: 0 8px 8px 0; color: var(--text-dim);
}

.cursor::after {
  content: "▋"; color: var(--accent);
  animation: blink 1s step-end infinite; margin-left: 1px;
}
@keyframes blink { 50% { opacity: 0; } }

.error-box {
  background: rgba(248,113,113,.1); border: 1px solid rgba(248,113,113,.35);
  color: var(--red); border-radius: 10px; padding: 14px 16px; margin-top: 12px;
}

/* ---------------- 响应式 ---------------- */
@media (max-width: 880px) {
  .app { grid-template-columns: 1fr; grid-template-rows: auto 1fr; height: auto; min-height: 100vh; }
  .panel { border-right: none; border-bottom: 1px solid var(--border); }
  .result-area { padding: 20px; }
}

/* 滚动条 */
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-thumb { background: #2a3445; border-radius: 6px; }
::-webkit-scrollbar-track { background: transparent; }