/* Shared styles for article pages and the session registration page */

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --accent: #d63b17;
  --accent-dark: #b32f10;
  --text: #16161a;
  --text-mid: #55555c;
  --text-soft: #85858d;
  --text-faint: #b0b0b6;
  --border: #dcdcd7;
  --border-soft: #e6e6e1;
  --panel: #ffffff;
  --panel-tint: #ececeb;
}

html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  background: linear-gradient(170deg, #f7f7f5 0%, #eeeeeb 45%, #f4f4f1 100%);
  background-attachment: fixed;
  color: var(--text);
  line-height: 1.65;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; }

/* NAV */
nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  display: flex; justify-content: space-between; align-items: center;
  padding: 1.1rem 4rem;
  background: rgba(247,247,245,0.92);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border-soft);
}
.nav-logo { font-weight: 800; font-size: 0.95rem; color: var(--text); text-decoration: none; }
.nav-logo span { color: var(--accent); }
.nav-links { display: flex; gap: 1.9rem; list-style: none; align-items: center; }
.nav-links a {
  color: var(--text-soft); text-decoration: none; font-size: 0.79rem;
  font-weight: 500; letter-spacing: 0.06em; text-transform: uppercase; transition: color 0.2s;
}
.nav-links a:hover { color: var(--text); }
.nav-cta {
  background: var(--accent); color: #fff !important;
  padding: 0.55rem 1.3rem; border-radius: 2px; font-weight: 700 !important;
}
.nav-cta:hover { background: var(--accent-dark); }

/* BUTTONS */
.btn-primary {
  display: inline-block; background: var(--accent); color: #fff;
  padding: 0.95rem 2.1rem; font-size: 0.82rem; font-weight: 700;
  letter-spacing: 0.08em; text-transform: uppercase; text-decoration: none;
  border-radius: 2px; transition: background 0.2s, transform 0.15s;
}
.btn-primary:hover { background: var(--accent-dark); transform: translateY(-1px); }
.btn-secondary {
  display: inline-block; border: 1px solid #c4c4bd; color: var(--text);
  padding: 0.95rem 2.1rem; font-size: 0.82rem; font-weight: 600;
  letter-spacing: 0.08em; text-transform: uppercase; text-decoration: none;
  border-radius: 2px; transition: border-color 0.2s, transform 0.15s;
}
.btn-secondary:hover { border-color: var(--text); transform: translateY(-1px); }

/* ARTICLE LAYOUT */
.article-wrap { max-width: 760px; margin: 0 auto; padding: 8.5rem 2rem 4rem; }

.breadcrumb {
  font-size: 0.75rem; color: var(--text-faint);
  letter-spacing: 0.04em; margin-bottom: 1.75rem;
}
.breadcrumb a { color: var(--text-soft); text-decoration: none; }
.breadcrumb a:hover { color: var(--accent); }

.article-wrap h1 {
  font-family: 'Playfair Display', Georgia, serif;
  font-size: clamp(2rem, 3.6vw, 2.9rem);
  font-weight: 900; line-height: 1.15; letter-spacing: -0.015em;
  margin-bottom: 1.25rem;
}

.article-meta {
  font-size: 0.82rem; color: var(--text-soft);
  padding-bottom: 1.75rem; margin-bottom: 2.25rem;
  border-bottom: 1px solid var(--border);
}
.article-meta strong { color: var(--text); font-weight: 600; }

.short-answer {
  background: var(--panel); border: 1px solid var(--border);
  border-left: 3px solid var(--accent);
  padding: 1.6rem 1.75rem; margin-bottom: 2.5rem;
  font-size: 1.02rem; line-height: 1.8; color: var(--text-mid);
}
.short-answer strong { color: var(--text); font-weight: 700; }

.article-body h2 {
  font-family: 'Playfair Display', Georgia, serif;
  font-size: 1.65rem; font-weight: 900; line-height: 1.25;
  margin: 2.75rem 0 1rem;
}
.article-body h3 {
  font-size: 1.1rem; font-weight: 800;
  margin: 2rem 0 0.6rem;
}
.article-body p {
  font-size: 1.04rem; line-height: 1.85;
  color: var(--text-mid); margin-bottom: 1.35rem;
}
.article-body p strong { color: var(--text); font-weight: 600; }
.article-body em { font-style: italic; }
.article-body a { color: var(--accent); text-decoration: underline; text-underline-offset: 2px; }
.article-body a:hover { color: var(--accent-dark); }
.article-body ul { margin: 0 0 1.35rem 1.2rem; }
.article-body li { font-size: 1.02rem; line-height: 1.8; color: var(--text-mid); margin-bottom: 0.5rem; }
.article-body blockquote {
  border-left: 3px solid var(--border);
  padding-left: 1.4rem; margin: 0 0 1.35rem;
  color: var(--text-soft); font-style: italic;
}

/* FAQ */
.faq-block { margin-top: 3rem; padding-top: 2.25rem; border-top: 1px solid var(--border); }
.faq-block h2 {
  font-family: 'Playfair Display', Georgia, serif;
  font-size: 1.65rem; font-weight: 900; margin-bottom: 1.5rem;
}
.faq-block details { border-top: 1px solid var(--border); padding: 1.2rem 0; }
.faq-block details:last-of-type { border-bottom: 1px solid var(--border); }
.faq-block summary {
  font-size: 0.98rem; font-weight: 700; color: var(--text); cursor: pointer;
  list-style: none; display: flex; justify-content: space-between; align-items: flex-start; gap: 1.5rem;
}
.faq-block summary::-webkit-details-marker { display: none; }
.faq-block summary::after { content: '+'; color: var(--accent); font-size: 1.3rem; line-height: 1; flex-shrink: 0; }
.faq-block details[open] summary::after { content: '\2212'; }
.faq-block details p { margin: 0.8rem 0 0; font-size: 0.96rem; line-height: 1.8; color: var(--text-mid); }

/* ARTICLE FOOTER BLOCKS */
.article-cta {
  margin-top: 3rem; background: var(--panel);
  border: 1px solid var(--border); padding: 2rem 1.9rem;
}
.article-cta h3 { font-size: 1.1rem; font-weight: 800; margin-bottom: 0.6rem; }
.article-cta p { font-size: 0.96rem; color: var(--text-mid); line-height: 1.75; margin-bottom: 1.3rem; }

.article-related { margin-top: 2.25rem; }
.article-related h3 {
  font-size: 0.68rem; font-weight: 700; letter-spacing: 0.14em;
  text-transform: uppercase; color: var(--text-faint); margin-bottom: 1rem;
}
.article-related ul { list-style: none; display: flex; flex-direction: column; gap: 0.65rem; }
.article-related a { font-size: 0.96rem; color: var(--text); text-decoration: none; font-weight: 600; }
.article-related a:hover { color: var(--accent); }

.article-sources {
  margin-top: 2.25rem; padding-top: 1.5rem; border-top: 1px solid var(--border);
  font-size: 0.82rem; color: var(--text-soft); line-height: 1.7;
}
.article-sources strong { color: var(--text-mid); }

/* WRITING INDEX */
.index-wrap { max-width: 880px; margin: 0 auto; padding: 8.5rem 2rem 4rem; }
.index-wrap h1 {
  font-family: 'Playfair Display', Georgia, serif;
  font-size: clamp(2rem, 3.6vw, 2.9rem); font-weight: 900;
  line-height: 1.15; margin-bottom: 0.9rem;
}
.index-intro { font-size: 1.04rem; color: var(--text-mid); line-height: 1.8; margin-bottom: 2.75rem; max-width: 640px; }
.index-list { display: flex; flex-direction: column; gap: 1px; background: var(--border); border: 1px solid var(--border); }
.index-item { background: var(--panel); padding: 1.9rem 1.85rem; text-decoration: none; display: block; transition: background 0.2s; }
.index-item:hover { background: #fcfcfa; }
.index-item h2 { font-size: 1.18rem; font-weight: 800; line-height: 1.35; margin-bottom: 0.5rem; transition: color 0.2s; }
.index-item:hover h2 { color: var(--accent); }
.index-item p { font-size: 0.93rem; color: var(--text-mid); line-height: 1.7; }

/* FOOTER */
footer {
  padding: 2.5rem 4rem; border-top: 1px solid var(--border-soft);
  display: flex; justify-content: space-between; align-items: center; gap: 2rem; flex-wrap: wrap;
}
footer p { font-size: 0.78rem; color: var(--text-faint); }
.footer-links { display: flex; gap: 1.75rem; list-style: none; flex-wrap: wrap; }
.footer-links a { font-size: 0.78rem; color: var(--text-faint); text-decoration: none; transition: color 0.2s; }
.footer-links a:hover { color: var(--text-mid); }

/* RESPONSIVE */
@media (max-width: 900px) {
  nav { padding: 0.9rem 1.5rem; }
  .nav-links { display: none; }
  .nav-links.mobile-cta { display: flex; }
  .article-wrap, .index-wrap { padding: 6.5rem 1.5rem 3rem; }
  footer { flex-direction: column; text-align: center; gap: 1.25rem; padding: 2.5rem 1.5rem; }
}