:root {
  --bg: #f7f7f8;
  --panel-bg: #ffffff;
  --border: #e0e0e5;
  --text: #1f2430;
  --muted: #6b7280;
  --accent: #3b6ef0;
  --accent-text: #ffffff;
  --error: #c0392b;
  --radius: 8px;
}

* {
  box-sizing: border-box;
}

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

h1, h2 {
  margin: 0 0 0.75rem;
}

/* Login page */
body.login-page {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
}

.login-card {
  background: var(--panel-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2rem;
  width: 320px;
}

.login-card form {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

/* Dashboard */
.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1.5rem;
  background: var(--panel-bg);
  border-bottom: 1px solid var(--border);
}

.layout {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 1rem;
  padding: 1.5rem;
}

.chat-panel {
  grid-column: 1 / -1;
}

@media (max-width: 800px) {
  .layout {
    grid-template-columns: 1fr;
  }
}

.panel {
  background: var(--panel-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem;
}

input, select, button {
  font: inherit;
  padding: 0.5rem 0.65rem;
  border: 1px solid var(--border);
  border-radius: 6px;
}

button {
  background: var(--accent);
  color: var(--accent-text);
  border: none;
  cursor: pointer;
}

button:hover {
  opacity: 0.9;
}

.link-btn {
  background: none;
  color: var(--muted);
  border: none;
  text-decoration: underline;
  cursor: pointer;
  padding: 0;
}

.add-task-form {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1rem;
}

.add-task-form input,
.add-task-form select {
  flex: 1 1 140px;
}

table {
  width: 100%;
  border-collapse: collapse;
}

th, td {
  text-align: left;
  padding: 0.5rem;
  border-bottom: 1px solid var(--border);
  font-size: 0.9rem;
}

.hint {
  color: var(--muted);
  font-size: 0.85rem;
  margin: 0 0 0.75rem;
}

.settings-list {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.35rem 1rem;
  margin: 0;
  font-size: 0.9rem;
}

.settings-list dt {
  color: var(--muted);
}

.settings-list dd {
  margin: 0;
  font-weight: 500;
}

.activity-feed {
  list-style: none;
  margin: 0;
  padding: 0;
  max-height: 320px;
  overflow-y: auto;
}

.activity-feed li {
  padding: 0.5rem 0;
  border-bottom: 1px solid var(--border);
  font-size: 0.9rem;
}

.chat-thread {
  max-height: 300px;
  overflow-y: auto;
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 0.75rem;
  margin-bottom: 0.75rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.chat-msg {
  padding: 0.5rem 0.75rem;
  border-radius: 10px;
  max-width: 75%;
  white-space: pre-wrap;
}

.chat-user {
  align-self: flex-end;
  background: var(--accent);
  color: var(--accent-text);
}

.chat-agent {
  align-self: flex-start;
  background: var(--bg);
  border: 1px solid var(--border);
}

.chat-form {
  display: flex;
  gap: 0.5rem;
}

.chat-form input {
  flex: 1;
}

.error {
  color: var(--error);
  font-size: 0.9rem;
}