:root {
  --bg: #f5f7fb;
  --surface: #ffffff;
  --surface-2: #f0f4ff;
  --border: #d5def3;
  --text: #0d1b3d;
  --muted: #5e6a88;
  --brand: #1363df;
  --brand-dark: #0e4db0;
  --user: #e9f2ff;
  --assistant: #f3f7ff;
  --danger: #c62828;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  color: var(--text);
  background: radial-gradient(circle at top, #e6eeff, var(--bg) 55%);
}

.muted {
  color: var(--muted);
  margin: 0;
}

.login-body {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 20px;
}

.login-card {
  width: min(420px, 100%);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  box-shadow: 0 20px 40px rgba(13, 27, 61, 0.08);
  padding: 28px;
}

.login-card h1 {
  margin: 0 0 6px;
}

.stack {
  display: grid;
  gap: 12px;
  margin-top: 18px;
}

label {
  display: grid;
  gap: 6px;
  font-weight: 600;
}

input,
textarea,
button {
  font: inherit;
}

input,
textarea {
  width: 100%;
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 10px 12px;
  background: #fff;
  color: var(--text);
}

button {
  border: 0;
  background: var(--brand);
  color: #fff;
  font-weight: 700;
  padding: 10px 14px;
  border-radius: 10px;
  cursor: pointer;
}

button:hover {
  background: var(--brand-dark);
}

.error {
  color: var(--danger);
  font-weight: 600;
  margin-top: 12px;
}

.chat-body {
  min-height: 100vh;
  display: grid;
  grid-template-rows: auto 1fr;
}

.topbar {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: center;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  padding: 16px 20px;
}

.topbar h1 {
  margin: 0;
}

.topbar-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

.pill {
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 6px 10px;
  font-size: 14px;
}

button.ghost {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border);
}

.layout {
  display: grid;
  grid-template-columns: 1fr 330px;
  gap: 16px;
  padding: 16px;
  min-height: 0;
}

.chat-panel,
.memory-panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
}

.chat-panel {
  display: grid;
  grid-template-rows: 1fr auto;
  min-height: 0;
}

.messages {
  padding: 14px;
  overflow: auto;
  min-height: 0;
  display: grid;
  gap: 12px;
}

.msg {
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 10px 12px;
  max-width: 85%;
  white-space: pre-wrap;
  line-height: 1.35;
}

.msg.user {
  background: var(--user);
  justify-self: end;
}

.msg.assistant {
  background: var(--assistant);
  justify-self: start;
}

.chat-form {
  border-top: 1px solid var(--border);
  padding: 12px;
  display: grid;
  gap: 8px;
}

.chat-form button {
  justify-self: end;
}

.memory-panel {
  padding: 14px;
  overflow: auto;
}

.memory-panel h2 {
  margin: 2px 0 6px;
}

.memory-list {
  list-style: none;
  padding: 0;
  margin: 12px 0 0;
  display: grid;
  gap: 8px;
}

.memory-item {
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 8px 10px;
  line-height: 1.35;
}

.memory-meta {
  display: block;
  margin-top: 4px;
  font-size: 12px;
  color: var(--muted);
}

@media (max-width: 980px) {
  .layout {
    grid-template-columns: 1fr;
  }

  .memory-panel {
    order: -1;
  }
}