/* Item 2.04 — minimal stylesheet */
/* System font stack, one accent colour, max-width 760px, dark mode */

:root {
  --accent: #1a6dd4;
  --accent-hover: #1458a8;
  --bg: #fff;
  --fg: #1a1a1a;
  --fg-muted: #555;
  --border: #ddd;
  --card-bg: #f8f8f8;
  --severity-5: #b91c1c;
  --severity-4: #c2410c;
  --severity-3: #6b7280;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #111;
    --fg: #e5e5e5;
    --fg-muted: #999;
    --border: #333;
    --card-bg: #1a1a1a;
    --severity-5: #ef4444;
    --severity-4: #f97316;
    --severity-3: #9ca3af;
  }
}

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

html {
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.6;
  color: var(--fg);
  background: var(--bg);
}

body {
  max-width: 760px;
  margin: 0 auto;
  padding: 1rem;
}

/* Navigation */

header nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 0;
  border-bottom: 1px solid var(--border);
  margin-bottom: 2rem;
}

.brand {
  font-weight: 700;
  text-decoration: none;
  color: var(--fg);
}

.nav-links a {
  margin-left: 1.5rem;
  text-decoration: none;
  color: var(--fg-muted);
}

.nav-links a:hover {
  color: var(--accent);
}

/* Typography */

h1 {
  font-size: 1.75rem;
  line-height: 1.25;
  margin: 0 0 1rem;
}

h2 {
  font-size: 1.35rem;
  margin: 2.5rem 0 1rem;
  border-bottom: 1px solid var(--border);
  padding-bottom: 0.5rem;
}

h3 {
  font-size: 1.1rem;
  margin: 0.5rem 0;
}

a {
  color: var(--accent);
}

a:hover {
  color: var(--accent-hover);
}

p {
  margin: 0.75rem 0;
}

/* Hero */

.hero {
  margin-bottom: 2rem;
}

.sub-head {
  font-size: 1.05rem;
  color: var(--fg-muted);
  max-width: 640px;
}

.hero-actions {
  margin-top: 1.5rem;
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
}

/* Buttons */

.btn {
  display: inline-block;
  padding: 0.6rem 1.25rem;
  border-radius: 4px;
  text-decoration: none;
  font-weight: 600;
  font-size: 0.95rem;
}

.btn-primary {
  background: var(--accent);
  color: #fff;
}

.btn-primary:hover {
  background: var(--accent-hover);
  color: #fff;
}

.btn-secondary {
  background: transparent;
  color: var(--accent);
  border: 1px solid var(--accent);
}

.btn-secondary:hover {
  background: var(--accent);
  color: #fff;
}

/* Signal cards */

.signal-card {
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 1rem;
  margin: 1rem 0;
  background: var(--card-bg);
}

.signal-meta {
  display: flex;
  gap: 0.75rem;
  align-items: center;
  font-size: 0.85rem;
  margin-bottom: 0.5rem;
}

.severity {
  font-weight: 700;
  text-transform: uppercase;
  font-size: 0.8rem;
  padding: 0.15rem 0.4rem;
  border-radius: 3px;
}

.severity-5 {
  color: var(--severity-5);
  border: 1px solid var(--severity-5);
}

.severity-4 {
  color: var(--severity-4);
  border: 1px solid var(--severity-4);
}

.severity-3 {
  color: var(--severity-3);
  border: 1px solid var(--severity-3);
}

.signal-type {
  color: var(--fg-muted);
}

.filed-time,
.filed-date {
  color: var(--fg-muted);
  font-size: 0.85rem;
}

.headline {
  margin: 0.25rem 0;
}

.summary {
  color: var(--fg-muted);
  font-size: 0.95rem;
}

/* Key facts */

.key-facts {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.25rem 1rem;
  font-size: 0.9rem;
  margin: 0.75rem 0;
}

.key-facts dt {
  font-weight: 600;
  color: var(--fg-muted);
}

.key-facts dd {
  margin: 0;
}

/* Evidence quotes */

.evidence blockquote {
  border-left: 3px solid var(--border);
  margin: 0.75rem 0;
  padding: 0.5rem 1rem;
  font-size: 0.9rem;
  color: var(--fg-muted);
}

.evidence cite {
  display: block;
  font-size: 0.8rem;
  font-style: normal;
  font-weight: 600;
  margin-bottom: 0.25rem;
}

.edgar-link {
  font-size: 0.9rem;
}

/* Taxonomy table */

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
  margin: 1rem 0;
}

th,
td {
  text-align: left;
  padding: 0.5rem 0.75rem;
  border-bottom: 1px solid var(--border);
}

th {
  font-weight: 600;
  background: var(--card-bg);
}

/* Delivery methods */

.delivery-methods dt {
  font-weight: 600;
  margin-top: 1rem;
}

.delivery-methods dd {
  margin: 0.25rem 0 0 0;
  color: var(--fg-muted);
}

/* Pricing */

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1rem;
  margin: 1.5rem 0;
}

.plan-card {
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 1.5rem;
  background: var(--card-bg);
}

.plan-card h3 {
  margin: 0 0 0.5rem;
}

.price {
  font-size: 1.5rem;
  font-weight: 700;
  margin: 0.5rem 0;
}

.price .period {
  font-size: 0.85rem;
  font-weight: 400;
  color: var(--fg-muted);
}

.plan-card ul {
  list-style: none;
  padding: 0;
  margin: 1rem 0;
}

.plan-card li {
  padding: 0.25rem 0;
  font-size: 0.9rem;
  color: var(--fg-muted);
}

.plan-card li::before {
  content: "\2713\00a0";
  color: var(--accent);
}

.plan-card .btn {
  display: block;
  text-align: center;
  margin-top: 1rem;
}

/* FAQ */

details {
  border-bottom: 1px solid var(--border);
  padding: 0.75rem 0;
}

summary {
  cursor: pointer;
  font-weight: 600;
  font-size: 1rem;
  padding: 0.25rem 0;
}

summary:hover {
  color: var(--accent);
}

details p {
  color: var(--fg-muted);
  font-size: 0.95rem;
}

/* Footer */

footer {
  margin-top: 3rem;
  padding: 1.5rem 0;
  border-top: 1px solid var(--border);
  font-size: 0.85rem;
  color: var(--fg-muted);
}

footer p {
  margin: 0.25rem 0;
}

.disclaimer {
  font-style: italic;
}

/* Latency section */

.latency {
  margin-bottom: 2rem;
  font-size: 1rem;
}