/**
 * 公开站默认：浅色、宽屏友好（与控制台深色主题分离）
 */
@import url("https://fonts.googleapis.com/css2?family=DM+Sans:ital,opsz,wght@0,9..40,400;0,9..40,500;0,9..40,600;0,9..40,700&family=JetBrains+Mono:wght@400;500&display=swap");

:root {
  --ur-app-max-width: 1240px;
  --pub-shell-width: 1120px;
  --pub-font: "DM Sans", ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;
  --pub-mono: "JetBrains Mono", ui-monospace, monospace;

  --pub-bg: #ffffff;
  --pub-bg-subtle: #fafafa;
  --pub-border: #eaeaea;
  --pub-border-strong: #e0e0e0;
  --pub-text: #111111;
  --pub-text-secondary: #555555;
  --pub-muted: #888888;
  --pub-accent: #2563eb;
  --pub-accent-hover: #1d4ed8;
  --pub-radius: 12px;
  --pub-radius-sm: 8px;
  --pub-header-h: 56px;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  -webkit-font-smoothing: antialiased;
}

body.pub-light {
  margin: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  font-family: var(--pub-font);
  font-size: 15px;
  line-height: 1.55;
  color: var(--pub-text);
  background:
    radial-gradient(1200px 520px at 8% -8%, rgba(30, 64, 175, 0.1), transparent 64%),
    linear-gradient(180deg, #f2f5fb 0%, #f7f9fe 34%, #ffffff 100%);
}

.pub-light a {
  color: var(--pub-accent);
  text-decoration: none;
}
.pub-light a:hover {
  color: var(--pub-accent-hover);
  text-decoration: underline;
}

/* 顶栏 */
.pub-light .top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.75rem;
  min-height: var(--pub-header-h);
  padding: 0 max(1rem, calc((100vw - var(--pub-shell-width)) / 2));
  border-bottom: 1px solid #e3e9f4;
  background: rgba(255, 255, 255, 0.88);
  backdrop-filter: blur(8px);
  position: sticky;
  top: 0;
  z-index: 100;
}

.pub-light .brand {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  font-weight: 700;
  font-size: 1rem;
  letter-spacing: -0.02em;
  color: var(--pub-text);
  background: none;
  -webkit-text-fill-color: currentColor;
}

.pub-light .brand-logo {
  width: 112px;
  height: 26px;
  object-fit: contain;
}

.pub-light .brand > span {
  display: none;
}

.pub-light .nav {
  display: flex;
  gap: 0.15rem;
  flex-wrap: wrap;
  align-items: center;
}

.pub-light .nav a {
  color: var(--pub-text-secondary);
  font-size: 0.9rem;
  font-weight: 500;
  padding: 0.45rem 0.85rem;
  border-radius: 999px;
  text-decoration: none;
}
.pub-light .nav a:hover {
  color: var(--pub-text);
  background: var(--pub-bg-subtle);
  text-decoration: none;
}

/* 按钮 */
.pub-light .btn,
.pub-light button.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  padding: 0.65rem 1.25rem;
  font-family: inherit;
  font-size: 0.9rem;
  font-weight: 600;
  border-radius: 999px;
  border: 1px solid var(--pub-border-strong);
  background: var(--pub-bg);
  color: var(--pub-text);
  cursor: pointer;
  transition: background 0.15s ease, border-color 0.15s ease, box-shadow 0.15s ease;
}
.pub-light .btn:hover,
.pub-light button.btn:hover {
  background: var(--pub-bg-subtle);
  border-color: #ccc;
  text-decoration: none;
  color: var(--pub-text);
}

.pub-light .btn.primary,
.pub-light a.btn.primary {
  background: var(--pub-accent);
  border-color: var(--pub-accent);
  color: #fff;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.06);
}
.pub-light .btn.primary:hover,
.pub-light a.btn.primary:hover {
  background: var(--pub-accent-hover);
  border-color: var(--pub-accent-hover);
  color: #fff;
}

.pub-light .btn.ghost,
.pub-light button.btn.ghost {
  background: transparent;
  border-color: var(--pub-border);
}
.pub-light .btn.ghost:hover {
  background: var(--pub-bg-subtle);
}

/* 页脚 */
.pub-light .foot {
  margin-top: auto;
  padding: 1.5rem 1.5rem;
  border-top: 1px solid #24458f;
  color: rgba(255, 255, 255, 0.82);
  font-size: 0.84rem;
  text-align: center;
  background: linear-gradient(90deg, #0f1f47 0%, #12295b 100%);
}

.pub-light .mono {
  font-family: var(--pub-mono);
  font-size: 0.85em;
}

.pub-light .hidden {
  display: none !important;
}

/* 浅色面板（聊天页等） */
.pub-light .panel,
.pub-light .card-lite {
  background: var(--pub-bg);
  border: 1px solid var(--pub-border);
  border-radius: var(--pub-radius);
  padding: 1.25rem 1.35rem;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.04);
}

.pub-light .panel h2 {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-weight: 600;
  color: var(--pub-muted);
  margin: 0 0 0.85rem;
}

.pub-light .panel label {
  display: block;
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--pub-muted);
  margin: 0.65rem 0 0.3rem;
}

.pub-light .panel input,
.pub-light .panel select,
.pub-light .panel textarea {
  width: 100%;
  padding: 0.55rem 0.75rem;
  border-radius: var(--pub-radius-sm);
  border: 1px solid var(--pub-border-strong);
  background: var(--pub-bg);
  color: var(--pub-text);
  font: inherit;
}
.pub-light .panel input:focus,
.pub-light .panel select:focus,
.pub-light .panel textarea:focus {
  outline: none;
  border-color: var(--pub-accent);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.12);
}

.pub-light .panel textarea {
  min-height: 80px;
  resize: vertical;
}

.pub-light .msg-list {
  min-height: 300px;
  max-height: min(55vh, 560px);
  overflow-y: auto;
  padding: 0.85rem;
  border-radius: var(--pub-radius-sm);
  border: 1px solid var(--pub-border);
  background: var(--pub-bg-subtle);
  margin-bottom: 0.75rem;
}

.pub-light .bubble {
  margin: 0.5rem 0;
  padding: 0.75rem 1rem;
  border-radius: 14px;
  max-width: min(92%, 680px);
  white-space: pre-wrap;
  font-size: 0.9375rem;
  line-height: 1.5;
}
.pub-light .bubble.user {
  margin-left: auto;
  background: #eff6ff;
  border: 1px solid #bfdbfe;
  color: var(--pub-text);
}
.pub-light .bubble.asst {
  background: var(--pub-bg);
  border: 1px solid var(--pub-border);
  color: var(--pub-text);
}
.pub-light .bubble.err {
  background: #fef2f2;
  border: 1px solid #fecaca;
  color: #991b1b;
}

.pub-light .row-actions {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  margin-top: 0.65rem;
}

.pub-light .err-text {
  color: #dc2626;
  font-size: 0.875rem;
  margin-top: 0.35rem;
}

.pub-light .panel-divider {
  margin-top: 1.15rem !important;
  padding-top: 0.85rem;
  border-top: 1px solid var(--pub-border);
}

.pub-light .panel-hint {
  margin-top: 0.65rem;
  font-size: 0.8125rem;
  color: var(--pub-muted);
  line-height: 1.5;
}

.pub-light .chat-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.15rem;
}
@media (min-width: 960px) {
  .pub-light .chat-layout {
    grid-template-columns: minmax(260px, 300px) 1fr;
    align-items: start;
  }
}