/* Class Insights SPA styles — clean, accessible, framework-agnostic. */

:root {
  --bg: #0f172a;
  --panel: #ffffff;
  --ink: #1e293b;
  --muted: #64748b;
  --accent: #2563eb;
  --accent-ink: #ffffff;
  --border: #e2e8f0;
  --error: #b91c1c;
  --error-bg: #fef2f2;
  --code-bg: #f1f5f9;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial,
    sans-serif;
  color: var(--ink);
  background: #f8fafc;
  line-height: 1.5;
}

.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--accent);
  color: var(--accent-ink);
  padding: 0.5rem 1rem;
  z-index: 10;
}
.skip-link:focus {
  left: 0;
}

.site-header {
  background: var(--bg);
  color: #e2e8f0;
  padding: 1.5rem 1rem;
}
.site-header h1 {
  margin: 0 0 0.25rem;
  font-size: 1.5rem;
}
.tagline {
  margin: 0;
  max-width: 60ch;
  color: #cbd5e1;
}

.container {
  max-width: 860px;
  margin: 1.5rem auto;
  padding: 0 1rem;
}

.tabs {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 1rem;
}
.tab {
  border: 1px solid var(--border);
  background: #fff;
  color: var(--ink);
  padding: 0.5rem 1rem;
  border-radius: 8px 8px 0 0;
  cursor: pointer;
  font-size: 1rem;
}
.tab-active {
  background: var(--accent);
  color: var(--accent-ink);
  border-color: var(--accent);
}
.tab:focus-visible {
  outline: 3px solid #93c5fd;
  outline-offset: 2px;
}

.card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.25rem;
  box-shadow: 0 1px 2px rgba(15, 23, 42, 0.05);
}
.card h2 {
  margin-top: 0;
}

.field {
  margin-bottom: 1rem;
}
.field label {
  display: block;
  font-weight: 600;
  margin-bottom: 0.35rem;
}
.field-inline {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
}
.field-inline label {
  margin: 0;
}

textarea,
select {
  width: 100%;
  font: inherit;
  padding: 0.6rem;
  border: 1px solid var(--border);
  border-radius: 8px;
}
select {
  width: auto;
}

.help {
  color: var(--muted);
  font-size: 0.9rem;
  margin: 0.35rem 0 0;
}

.btn {
  font: inherit;
  border-radius: 8px;
  padding: 0.55rem 1.1rem;
  cursor: pointer;
  border: 1px solid transparent;
}
.btn:focus-visible {
  outline: 3px solid #93c5fd;
  outline-offset: 2px;
}
.btn-primary {
  background: var(--accent);
  color: var(--accent-ink);
}
.btn-primary:disabled {
  opacity: 0.6;
  cursor: default;
}
.btn-secondary {
  background: #fff;
  color: var(--ink);
  border-color: var(--border);
}

.message {
  padding: 0.6rem 0.8rem;
  border-radius: 8px;
  margin: 0.75rem 0;
}
.message-error {
  color: var(--error);
  background: var(--error-bg);
  border: 1px solid #fecaca;
}

/* Chat */
.chat-log {
  max-height: 400px;
  overflow-y: auto;
  margin-bottom: 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}
.chat-msg {
  padding: 0.6rem 0.8rem;
  border-radius: 10px;
  border: 1px solid var(--border);
}
.chat-msg-user {
  background: #eff6ff;
  align-self: flex-end;
  max-width: 85%;
}
.chat-msg-bot {
  background: #f8fafc;
  align-self: flex-start;
  max-width: 95%;
}
.chat-who {
  display: block;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  color: var(--muted);
  margin-bottom: 0.25rem;
}
.chat-body {
  white-space: pre-wrap;
  word-break: break-word;
}
.chat-sources {
  margin-top: 0.4rem;
  font-size: 0.8rem;
  color: var(--muted);
}

/* Logs */
.logs-list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}
.log-entry {
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.6rem 0.8rem;
  background: #fff;
}
.log-meta {
  font-size: 0.8rem;
  color: var(--muted);
  margin-bottom: 0.35rem;
  word-break: break-word;
}
.log-body {
  margin: 0;
  white-space: pre-wrap;
  word-break: break-word;
  font-size: 0.85rem;
  background: var(--code-bg);
  padding: 0.5rem;
  border-radius: 6px;
  overflow-x: auto;
}

code {
  background: var(--code-bg);
  padding: 0.1rem 0.3rem;
  border-radius: 4px;
}

.site-footer {
  color: var(--muted);
  text-align: center;
  padding: 1.5rem 1rem;
  font-size: 0.9rem;
}
.site-footer a {
  color: var(--accent);
}