:root {
  --blue-900: #0b2a5e;
  --blue-800: #103a7d;
  --blue-700: #154fa6;
  --blue-600: #1c63cc;
  --blue-500: #2f7bf6;
  --blue-100: #e8f0fe;
  --blue-50: #f4f8ff;
  --ink: #1a2233;
  --ink-soft: #5b6478;
  --border: #dde4f0;
  --bg: #f3f6fb;
  --surface: #ffffff;
  --radius: 10px;
  --shadow-sm: 0 1px 2px rgba(16, 40, 90, 0.06);
  --shadow-md: 0 6px 20px rgba(16, 40, 90, 0.10);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: "Segoe UI", -apple-system, BlinkMacSystemFont, Roboto, sans-serif;
  background: var(--bg);
  color: var(--ink);
}

.app { display: flex; height: 100vh; }

/* ---------- Sidebar ---------- */

.sidebar {
  width: 300px;
  flex-shrink: 0;
  background: linear-gradient(180deg, var(--blue-900), var(--blue-800) 60%, #0c2f68);
  color: #eaf1ff;
  padding: 20px 16px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 4px;
}

.brand-mark {
  width: 34px;
  height: 34px;
  border-radius: 8px;
  background: var(--blue-500);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 13px;
  color: white;
  box-shadow: var(--shadow-sm);
}

.brand h1 {
  font-size: 17px;
  font-weight: 600;
  margin: 0;
  letter-spacing: 0.2px;
}

.card {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.10);
  border-radius: var(--radius);
  padding: 14px;
}

.card.grow { flex: 1; min-height: 0; display: flex; flex-direction: column; }
.card.grow .convo-list { overflow-y: auto; }

.sidebar h2 {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.6px;
  color: #a9c0ee;
  margin: 0 0 10px;
  font-weight: 700;
}

.field-label {
  display: block;
  font-size: 11px;
  color: #b9cdf3;
  margin: 8px 0 4px;
}
.field-label:first-of-type { margin-top: 0; }

.sidebar select,
.sidebar input {
  width: 100%;
  margin-bottom: 4px;
  padding: 8px 10px;
  border-radius: 7px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  background: rgba(255, 255, 255, 0.92);
  color: var(--ink);
  font-size: 13px;
}

.sidebar select:focus,
.sidebar input:focus {
  outline: none;
  box-shadow: 0 0 0 3px rgba(47, 123, 246, 0.45);
}

button {
  font-family: inherit;
  cursor: pointer;
  font-size: 13px;
}

.btn-primary {
  width: 100%;
  margin-top: 10px;
  padding: 9px 12px;
  border: none;
  border-radius: 7px;
  background: var(--blue-500);
  color: white;
  font-weight: 600;
  box-shadow: var(--shadow-sm);
  transition: background 0.15s ease, transform 0.05s ease;
}
.btn-primary:hover { background: #2569de; }
.btn-primary:active { transform: translateY(1px); }

.btn-secondary {
  width: 100%;
  margin-bottom: 6px;
  padding: 8px 12px;
  border: 1px solid rgba(255, 255, 255, 0.22);
  border-radius: 7px;
  background: rgba(255, 255, 255, 0.08);
  color: #eaf1ff;
  font-weight: 500;
  transition: background 0.15s ease;
}
.btn-secondary:hover { background: rgba(255, 255, 255, 0.16); }

.mcp-list { display: flex; flex-direction: column; gap: 6px; }
.mcp-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: #dce8ff;
  padding: 6px 8px;
  border-radius: 6px;
  background: rgba(255, 255, 255, 0.05);
}
.mcp-item input { width: auto; margin: 0; accent-color: var(--blue-500); }

.hint { font-weight: 400; text-transform: none; color: #8fa9da; letter-spacing: 0; }
.hint-text { font-size: 11px; color: #a9c0ee; margin: 6px 0 0; }
.checkbox-label { display: flex !important; align-items: center; gap: 6px; }
.checkbox-label input { width: auto !important; margin: 0 !important; accent-color: var(--blue-500); }

.convo-list { display: flex; flex-direction: column; gap: 4px; }
.convo-btn {
  text-align: left;
  width: 100%;
  padding: 8px 10px;
  border-radius: 7px;
  border: none;
  background: transparent;
  color: #dce8ff;
  font-size: 13px;
}
.convo-btn:hover { background: rgba(255, 255, 255, 0.10); }

/* ---------- Chat area ---------- */

.chat {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.chat-header {
  padding: 16px 24px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
}

.chat-header-title {
  font-weight: 600;
  font-size: 14px;
  color: var(--ink);
}

.messages {
  flex: 1;
  overflow-y: auto;
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  background: var(--bg);
}

.msg {
  max-width: 65%;
  padding: 12px 16px;
  border-radius: 12px;
  white-space: pre-wrap;
  font-size: 14px;
  line-height: 1.5;
  box-shadow: var(--shadow-sm);
}

.msg.user {
  align-self: flex-end;
  background: var(--blue-500);
  color: white;
  border-bottom-right-radius: 4px;
}

.msg.assistant {
  align-self: flex-start;
  background: var(--surface);
  color: var(--ink);
  border: 1px solid var(--border);
  border-bottom-left-radius: 4px;
}

.msg.tool {
  align-self: flex-start;
  background: var(--blue-50);
  border: 1px dashed var(--blue-600);
  color: var(--blue-800);
  font-size: 12px;
  font-family: ui-monospace, monospace;
}

.chat-input {
  display: flex;
  gap: 10px;
  padding: 16px 24px;
  border-top: 1px solid var(--border);
  background: var(--surface);
}

.chat-input textarea {
  flex: 1;
  padding: 12px 14px;
  border-radius: 9px;
  border: 1px solid var(--border);
  background: var(--blue-50);
  color: var(--ink);
  resize: none;
  font-family: inherit;
  font-size: 14px;
}
.chat-input textarea:focus {
  outline: none;
  border-color: var(--blue-500);
  box-shadow: 0 0 0 3px rgba(47, 123, 246, 0.18);
}

.chat-input .btn-primary {
  width: auto;
  margin-top: 0;
  padding: 0 24px;
}

/* ---------- Dialogs / modals ---------- */

dialog {
  width: 600px;
  max-width: 92vw;
  background: var(--surface);
  color: var(--ink);
  border: none;
  border-radius: 14px;
  padding: 24px;
  box-shadow: var(--shadow-md);
}

dialog::backdrop {
  background: rgba(11, 42, 94, 0.45);
  backdrop-filter: blur(1px);
}

dialog h2 {
  margin: 0 0 14px;
  font-size: 17px;
  color: var(--blue-900);
}

dialog h3 {
  margin: 18px 0 10px;
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--ink-soft);
}

dialog table { width: 100%; margin-bottom: 4px; border-collapse: collapse; }
dialog table th {
  text-align: left;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.4px;
  color: var(--ink-soft);
  padding: 6px;
  border-bottom: 2px solid var(--border);
}
dialog table td {
  padding: 8px 6px;
  border-bottom: 1px solid var(--border);
  font-size: 13px;
}
dialog table button {
  border: 1px solid var(--border);
  background: var(--blue-50);
  color: var(--blue-700);
  border-radius: 6px;
  padding: 4px 9px;
  font-size: 12px;
  margin-right: 4px;
}
dialog table button:hover { background: var(--blue-100); }

dialog form label {
  display: block;
  font-size: 12px;
  color: var(--ink-soft);
  margin-bottom: 10px;
  font-weight: 500;
}

dialog form input,
dialog form select {
  width: 100%;
  padding: 9px 10px;
  margin-top: 4px;
  border-radius: 7px;
  border: 1px solid var(--border);
  background: var(--blue-50);
  color: var(--ink);
  font-size: 13px;
  font-weight: 400;
}
dialog form input:focus,
dialog form select:focus {
  outline: none;
  border-color: var(--blue-500);
  box-shadow: 0 0 0 3px rgba(47, 123, 246, 0.18);
}

dialog form button {
  margin-right: 8px;
  margin-top: 6px;
  padding: 9px 18px;
  border-radius: 7px;
  border: none;
  font-weight: 600;
}

dialog form .btn-primary { width: auto; }
dialog form .btn-secondary {
  width: auto;
  background: var(--blue-50);
  color: var(--blue-700);
  border: 1px solid var(--border);
}
dialog form .btn-secondary:hover { background: var(--blue-100); }

#mcpTestResult {
  font-size: 12px;
  white-space: pre-wrap;
  background: var(--blue-50);
  border: 1px solid var(--border);
  padding: 10px;
  border-radius: 8px;
  max-height: 150px;
  overflow-y: auto;
  margin-top: 10px;
  color: var(--blue-900);
}