:root {
  color-scheme: light;
  --color-bg: #fafaf8;
  --color-text: #1a1a1a;
  --color-text-secondary: #4a4a4a;
  --color-accent-warm: #8b2635;
  --color-accent-cold: #1b365d;
  --surface: #ffffff;
  --border: rgba(27, 54, 93, 0.12);
  --radius: 16px;
}

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

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: "Inter", -apple-system, BlinkMacSystemFont, sans-serif;
  color: var(--color-text);
  background-color: var(--color-bg);
  line-height: 1.7;
  font-weight: 300;
}

h1, h2, h3, h4, h5 {
  font-family: "Cormorant Garamond", Georgia, serif;
  margin: 0 0 12px;
  font-weight: 400;
  letter-spacing: 0.02em;
}

p {
  margin: 0 0 16px;
  color: var(--color-text-secondary);
}

ul, ol {
  margin: 0 0 16px;
  padding-left: 20px;
  color: var(--color-text-secondary);
}

li { margin-bottom: 8px; }

strong { font-weight: 500; color: var(--color-text); }

em { font-style: italic; }

a { color: inherit; text-decoration: none; }

a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--color-accent-cold);
  outline-offset: 2px;
}

/* ── Navigation ── */
.site-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 8vw 16px;
  border-bottom: 1px solid var(--border);
}

.logo {
  font-family: "Cormorant Garamond", Georgia, serif;
  font-weight: 400;
  letter-spacing: 0.02em;
  font-size: 1.4rem;
  color: var(--color-text);
}

.logo-link:hover { color: var(--color-accent-warm); }

.home-link {
  width: 34px;
  height: 34px;
  border-radius: 999px;
  border: 1px solid var(--color-accent-cold);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-secondary);
  transition: color 0.2s ease, border-color 0.2s ease;
}

.home-link svg { width: 18px; height: 18px; }

.home-link:hover {
  color: var(--color-accent-warm);
  border-color: var(--color-accent-warm);
}

/* ── Hero ── */
.site-hero {
  padding: 32px 8vw 80px;
  background-color: var(--color-bg);
  border-bottom: 1px solid var(--border);
}

.eyebrow {
  text-transform: uppercase;
  font-size: 0.75rem;
  letter-spacing: 0.2em;
  margin-bottom: 16px;
  color: var(--color-text-secondary);
}

.site-hero h1 {
  font-size: clamp(36px, 4vw, 56px);
  line-height: 1.1;
  margin-bottom: 20px;
  color: var(--color-text);
}

.hero-subtitle {
  font-family: "Cormorant Garamond", Georgia, serif;
  font-size: clamp(18px, 2vw, 24px);
  color: var(--color-text-secondary);
  margin-bottom: 0;
}

.hero-actions {
  display: flex;
  gap: 16px;
  margin-top: 24px;
  flex-wrap: wrap;
}

/* ── Buttons ── */
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 22px;
  border-radius: 999px;
  font-weight: 500;
  font-size: 15px;
  font-family: "Inter", sans-serif;
  transition: color 0.2s ease, border-color 0.2s ease, background-color 0.2s ease;
  cursor: pointer;
}

.button.primary {
  background: var(--color-accent-warm);
  color: #fff;
  border: none;
}

.button.primary:hover { background: #75202d; }

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

.button.ghost:hover {
  border-color: var(--color-accent-warm);
  color: var(--color-accent-warm);
}

/* ── Layout ── */
.constitution-layout {
  display: grid;
  grid-template-columns: 240px 1fr;
  grid-template-areas: "sidebar content";
  gap: 48px;
  padding: 48px 8vw;
  align-items: start;
  max-width: 1280px;
  margin: 0 auto;
}

.sidebar {
  grid-area: sidebar;
  position: sticky;
  top: 24px;
  align-self: start;
  background: var(--surface);
  border-radius: var(--radius);
  padding: 24px;
  border: 1px solid var(--border);
  max-height: calc(100vh - 48px);
  overflow-y: auto;
}

.constitution-content {
  grid-area: content;
  min-width: 0;
}

/* ── Responsive ── */
@media (max-width: 980px) {
  .constitution-layout {
    grid-template-columns: 1fr;
    grid-template-areas:
      "sidebar"
      "content";
    gap: 24px;
    padding: 32px 8vw;
  }

  .sidebar {
    position: static;
    display: none; /* hidden on mobile, replaced by select in Task 6 */
  }
}

@media (max-width: 720px) {
  .constitution-layout { padding: 24px 6vw; }
  .site-hero { padding: 32px 6vw 56px; }
  .site-nav { padding: 16px 6vw; }
}

/* ── Sidebar nav ── */
.sidebar-section-label {
  text-transform: uppercase;
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  color: var(--color-text-secondary);
  margin: 16px 0 8px;
  padding: 0;
}

.sidebar-section-label:first-child { margin-top: 0; }

.sidebar-link {
  display: block;
  padding: 8px 10px;
  border-radius: 10px;
  border: 1px solid transparent;
  font-size: 14px;
  color: var(--color-text-secondary);
  transition: border-color 0.15s ease, color 0.15s ease, background 0.15s ease;
  line-height: 1.4;
}

.sidebar-link:hover {
  border-color: var(--color-accent-cold);
  color: var(--color-text);
}

.sidebar-link.active {
  border-color: var(--color-accent-cold);
  color: var(--color-text);
  background: rgba(27, 54, 93, 0.04);
}

/* ── Mobile select ── */
.sidebar-select {
  display: none; /* hidden on desktop */
  width: 100%;
  padding: 10px 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  font-family: "Inter", sans-serif;
  font-size: 14px;
  color: var(--color-text);
  margin-bottom: 32px;
  cursor: pointer;
}

@media (max-width: 980px) {
  .sidebar-select { display: block; }
}

/* ── Section headings ── */
.section-heading {
  font-size: clamp(22px, 2.5vw, 30px);
  color: var(--color-text);
  border-bottom: 1px solid var(--border);
  padding-bottom: 16px;
  margin: 0 0 40px;
}

/* ── Titolo subheadings ── */
.titolo-heading {
  font-size: clamp(16px, 1.6vw, 19px);
  color: var(--color-text-secondary);
  font-family: "Cormorant Garamond", Georgia, serif;
  font-style: italic;
  border-bottom: 1px solid var(--border);
  padding-bottom: 10px;
  margin: 40px 0 28px;
  font-weight: 400;
}

/* ── Articles ── */
article {
  margin-bottom: 0;
}

/* Note: .article-eyebrow is intentionally distinct from .eyebrow (used in hero)
   to avoid style collision. Both use the same visual pattern. */
.article-eyebrow {
  text-transform: uppercase;
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  color: var(--color-accent-cold);
  margin-bottom: 10px;
}

article h3 {
  font-size: clamp(20px, 2vw, 26px);
  color: var(--color-text);
  margin-bottom: 20px;
}

.article-body p:last-child { margin-bottom: 0; }

.article-divider {
  border: none;
  border-top: 1px solid var(--border);
  margin: 48px 0;
}

/* ── Constitution quote ── */
.constitution-quote {
  margin: 32px 0 0;
  padding: 24px 32px;
  border-left: 3px solid var(--color-accent-warm);
  background: rgba(139, 38, 53, 0.04);
  border-radius: 0 var(--radius) var(--radius) 0;
  font-family: "Cormorant Garamond", Georgia, serif;
  font-size: clamp(18px, 1.8vw, 22px);
  color: var(--color-text-secondary);
}

/* ── Article link panel ── */
.article-link-panel {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  margin-top: 32px;
  padding: 24px 28px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.article-link-panel p {
  margin: 0;
  font-size: 14px;
  color: var(--color-text-secondary);
  flex: 1;
}

.article-link-panel .button {
  white-space: nowrap;
  font-size: 13px;
  padding: 10px 18px;
}

@media (max-width: 720px) {
  .article-link-panel {
    flex-direction: column;
    align-items: flex-start;
    padding: 20px;
  }
}

/* ── Footer ── */
.site-footer {
  text-align: center;
  padding: 40px 16px 64px;
  color: var(--color-text-secondary);
  font-size: 0.85rem;
  letter-spacing: 0.05em;
  border-top: 1px solid var(--border);
}

.site-footer p {
  margin: 0;
  color: var(--color-text-secondary);
}

.open-link {
  color: var(--color-accent-cold);
  text-decoration: underline;
  text-underline-offset: 3px;
  font-weight: 500;
}

.open-link:hover { color: var(--color-accent-warm); }

/* ── 404 page ── */
.not-found-content {
  padding: 96px 8vw;
  max-width: 640px;
}

.not-found-content h1 {
  font-size: clamp(32px, 4vw, 52px);
  margin-bottom: 16px;
}