/* ============================================================
   s-sd5f.css — Main stylesheet for niopartner.be
   Dark casino theme · accent: var(--accent) = #f97316
   ============================================================ */

/* ─── Reset & Base ──────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg-dark, #0f0a05);
  color: var(--text-white, #f0f6fc);
  line-height: 1.65;
  font-size: 16px;
  min-height: 100vh;
}

a { color: var(--accent, #f97316); text-decoration: none; }
a:hover { text-decoration: underline; }

h1, h2, h3, h4, h5, h6 {
  line-height: 1.25;
  font-weight: 800;
  margin-bottom: 0.75em;
}

h1 { font-size: clamp(24px, 4vw, 38px); }
h2 { font-size: clamp(20px, 3vw, 28px); }
h3 { font-size: clamp(17px, 2.5vw, 21px); }

p { margin-bottom: 1em; }
ul, ol { margin-bottom: 1em; padding-left: 1.5em; }
li { margin-bottom: 0.35em; }
table { border-collapse: collapse; width: 100%; }

img { max-width: 100%; height: auto; display: block; }

/* ─── Header ────────────────────────────────────────────────── */
header {
  background: var(--bg-dark-2, #1a1208);
  border-bottom: 1px solid var(--border, #3d2d18);
  position: sticky;
  top: 0;
  z-index: 100;
}

.sd5f-header-inner {
  max-width: 900px;
  margin: 0 auto;
  padding: 0 16px;
  height: 56px;
  display: flex;
  align-items: center;
  gap: 20px;
}

.sd5f-logo {
  font-size: 20px;
  font-weight: 800;
  color: var(--text-white, #f0f6fc);
  letter-spacing: -0.5px;
  text-decoration: none;
  flex-shrink: 0;
}
.sd5f-logo:hover { color: var(--accent, #f97316); text-decoration: none; }

header nav {
  margin-left: auto;
  display: flex;
  gap: 18px;
}

header nav a {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-muted, #8b949e);
  text-decoration: none;
}
header nav a:hover { color: var(--text-white, #f0f6fc); }

.sd5f-burger {
  display: none;
  background: none;
  border: none;
  color: var(--text-white, #f0f6fc);
  font-size: 22px;
  cursor: pointer;
  padding: 4px 8px;
  margin-left: auto;
}

/* ─── Hero Section ──────────────────────────────────────────── */
.sd5f-hero {
  background: var(--bg-dark-2, #1a1208);
  border-bottom: 1px solid var(--border, #3d2d18);
  padding: 48px 16px 40px;
}

.sd5f-hero-inner {
  max-width: 900px;
  margin: 0 auto;
}

.sd5f-date-badge {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  color: var(--text-muted, #8b949e);
  margin-bottom: 18px;
}
.sd5f-date-sep { color: var(--border, #3d2d18); }

.sd5f-hero h1 {
  margin-bottom: 20px;
  color: var(--text-white, #f0f6fc);
}

.sd5f-hero-sub {
  font-size: 18px;
  line-height: 1.7;
  color: var(--text-muted, #8b949e);
  max-width: 620px;
  margin-bottom: 28px;
}

.sd5f-cta-btn {
  display: inline-block;
  background: var(--accent, #f97316);
  color: #fff !important;
  font-size: 16px;
  font-weight: 700;
  padding: 13px 28px;
  border-radius: 8px;
  text-decoration: none !important;
  transition: background 0.2s, transform 0.1s;
  margin-bottom: 20px;
}
.sd5f-cta-btn:hover {
  background: #ea6c0a;
  transform: translateY(-1px);
  text-decoration: none;
}

.sd5f-hero-rating {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  color: var(--text-muted, #8b949e);
  margin-bottom: 20px;
}

.sd5f-stars { color: #f59e0b; font-size: 16px; letter-spacing: 1px; }

.sd5f-author-badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: var(--bg-card, #251a0d);
  border: 1px solid var(--border, #3d2d18);
  padding: 10px 14px;
  border-radius: 10px;
  text-decoration: none !important;
  margin-top: 4px;
  transition: border-color 0.2s;
}
.sd5f-author-badge:hover { border-color: var(--accent, #f97316); }

.sd5f-author-name {
  font-size: 14px;
  font-weight: 700;
  color: var(--text-white, #f0f6fc);
  line-height: 1.3;
}

.sd5f-author-title {
  font-size: 12px;
  color: var(--text-muted, #8b949e);
  line-height: 1.3;
}

/* ─── TOC Block ─────────────────────────────────────────────── */
.sd5f-toc-block {
  max-width: 900px;
  margin: 24px auto;
  padding: 0 16px;
  min-height: 54px;
  contain: layout;
}

.sd5f-toc-toggle {
  display: flex;
  align-items: center;
  gap: 8px;
  width: 100%;
  background: var(--bg-card, #251a0d);
  border: 1px solid var(--border, #3d2d18);
  color: var(--text-white, #f0f6fc);
  font-size: 15px;
  font-weight: 700;
  padding: 12px 16px;
  border-radius: 8px;
  cursor: pointer;
  text-align: left;
  transition: border-color 0.2s;
}
.sd5f-toc-toggle:hover { border-color: var(--accent, #f97316); }

.sd5f-toc-toggle-icon { font-size: 16px; flex-shrink: 0; }

.sd5f-toc-arrow {
  margin-left: auto;
  font-size: 12px;
  color: var(--text-muted, #8b949e);
  transition: transform 0.2s;
}
.sd5f-toc-block.sd5f-open .sd5f-toc-arrow { transform: rotate(180deg); }

.sd5f-toc-list {
  display: none;
  flex-direction: column;
  gap: 2px;
  margin-top: 4px;
  background: var(--bg-card, #251a0d);
  border: 1px solid var(--border, #3d2d18);
  border-radius: 8px;
  padding: 12px;
}
.sd5f-toc-block.sd5f-open .sd5f-toc-list { display: flex; }

/* Also handle onclick toggle that adds sd5f-open on the container */
.toc-block.sd5f-open .sd5f-toc-list { display: flex; }
.toc-block.sd5f-open .sd5f-toc-arrow { transform: rotate(180deg); }

.sd5f-toc-link {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 7px 8px;
  border-radius: 5px;
  font-size: 14px;
  color: var(--text-muted, #8b949e);
  text-decoration: none;
  transition: background 0.15s, color 0.15s;
}
.sd5f-toc-link:hover {
  background: rgba(249,115,22,0.08);
  color: var(--text-white, #f0f6fc);
  text-decoration: none;
}

.sd5f-toc-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 22px;
  height: 22px;
  background: var(--bg-dark-2, #1a1208);
  border: 1px solid var(--border, #3d2d18);
  border-radius: 4px;
  font-size: 11px;
  font-weight: 700;
  color: var(--text-muted, #8b949e);
  flex-shrink: 0;
}

/* ─── Main Content Wrapper ──────────────────────────────────── */
main {
  max-width: 900px;
  margin: 0 auto;
  padding: 0 16px 48px;
}

.sd5f-content-wrap { /* just a wrapper, no extra style needed */ }

.sd5f-content-section {
  padding: 32px 0;
  border-bottom: 1px solid var(--border, #3d2d18);
}
.sd5f-content-section:last-child { border-bottom: none; }

.sd5f-content-section h2 {
  color: var(--text-white, #f0f6fc);
  margin-bottom: 20px;
}

.sd5f-content-section h3 {
  color: var(--text-white, #f0f6fc);
  margin-top: 28px;
  margin-bottom: 14px;
}

.sd5f-content-section p {
  color: var(--text-muted, #8b949e);
  font-size: 15px;
}

.sd5f-content-section ul,
.sd5f-content-section ol {
  color: var(--text-muted, #8b949e);
  font-size: 15px;
}

/* ─── Term / List Items (sd5f-term-item) ─────────────────────── */
.sd5f-term-item {
  list-style: none;
  background: var(--bg-card, #251a0d);
  border: 1px solid var(--border, #3d2d18);
  border-radius: 8px;
  padding: 14px 16px;
  margin-bottom: 10px;
}

.sd5f-term-label {
  font-size: 15px;
  font-weight: 700;
  color: var(--text-white, #f0f6fc);
  margin-bottom: 4px;
}

.sd5f-term-desc {
  font-size: 14px;
  color: var(--text-muted, #8b949e);
  line-height: 1.5;
}

/* ─── Tables ─────────────────────────────────────────────────── */
.sd5f-table-wrap {
  overflow-x: auto;
  margin: 20px 0;
  border-radius: 8px;
  border: 1px solid var(--border, #3d2d18);
}

.sd5f-table-wrap table {
  min-width: 500px;
  background: var(--bg-card, #251a0d);
}

.sd5f-table-wrap th {
  background: var(--bg-dark-2, #1a1208);
  color: var(--text-white, #f0f6fc);
  font-size: 13px;
  font-weight: 700;
  padding: 12px 16px;
  text-align: left;
  border-bottom: 1px solid var(--border, #3d2d18);
  white-space: nowrap;
}

.sd5f-table-wrap td {
  padding: 11px 16px;
  font-size: 14px;
  color: var(--text-muted, #8b949e);
  border-bottom: 1px solid rgba(61,45,24,0.5);
  vertical-align: top;
}

.sd5f-table-wrap tr:last-child td { border-bottom: none; }
.sd5f-table-wrap tr:hover td { background: rgba(249,115,22,0.04); }

.sd5f-table-wrap td:first-child {
  font-weight: 600;
  color: var(--text-white, #f0f6fc);
  white-space: nowrap;
}

/* ─── FAQ ────────────────────────────────────────────────────── */
.sd5f-faq-item {
  border: 1px solid var(--border, #3d2d18);
  border-radius: 8px;
  margin-bottom: 8px;
  overflow: hidden;
  background: var(--bg-card, #251a0d);
}

.sd5f-faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 18px;
  font-size: 15px;
  font-weight: 700;
  color: var(--text-white, #f0f6fc);
  cursor: pointer;
  user-select: none;
  gap: 12px;
}
.sd5f-faq-question:hover { background: rgba(249,115,22,0.06); }

.sd5f-faq-icon {
  font-size: 12px;
  color: var(--text-muted, #8b949e);
  flex-shrink: 0;
  transition: transform 0.2s;
}

.sd5f-faq-item.sd5f-open .sd5f-faq-icon { transform: rotate(180deg); }

.sd5f-faq-answer {
  display: none;
  padding: 0 18px 16px;
  font-size: 14px;
  color: var(--text-muted, #8b949e);
  line-height: 1.6;
  border-top: 1px solid var(--border, #3d2d18);
}
.sd5f-faq-answer p { margin: 12px 0 0; }
.sd5f-faq-item.sd5f-open .sd5f-faq-answer { display: block; }

/* ─── Author Box ─────────────────────────────────────────────── */
.sd5f-author-box {
  background: var(--bg-card, #251a0d);
  border: 1px solid var(--border, #3d2d18);
  border-radius: 12px;
  padding: 24px;
  margin: 32px 0;
}

.sd5f-author-box-inner {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 16px;
}

.sd5f-author-box .sd5f-author-name {
  font-size: 17px;
  font-weight: 800;
  color: var(--text-white, #f0f6fc);
  margin-bottom: 3px;
}

.sd5f-author-role {
  font-size: 13px;
  color: var(--text-muted, #8b949e);
}

.sd5f-author-box p {
  font-size: 14px;
  color: var(--text-muted, #8b949e);
  line-height: 1.6;
  margin-bottom: 16px;
}

.sd5f-author-expertise {
  list-style: none;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 16px;
}

.sd5f-author-expertise li {
  font-size: 12px;
  font-weight: 600;
  padding: 4px 12px;
  border: 1px solid var(--border, #3d2d18);
  border-radius: 20px;
  color: var(--text-muted, #8b949e);
  margin: 0;
}

.sd5f-author-box > a {
  font-size: 14px;
  font-weight: 600;
  color: var(--accent, #f97316);
}

/* ─── Reviewers ──────────────────────────────────────────────── */
.sd5f-reviewers {
  margin-top: 32px;
  padding-top: 32px;
  border-top: 1px solid var(--border, #3d2d18);
}

.sd5f-reviewers h2 {
  font-size: 20px;
  font-weight: 800;
  color: var(--text-white, #f0f6fc);
  margin-bottom: 20px;
}

.sd5f-reviewers-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 16px;
}

.sd5f-reviewer-card {
  background: var(--bg-card, #251a0d);
  border: 1px solid var(--border, #3d2d18);
  border-radius: 10px;
  padding: 18px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.sd5f-reviewer-header {
  display: flex;
  align-items: center;
  gap: 12px;
}

.sd5f-reviewer-name {
  font-size: 14px;
  font-weight: 700;
  color: var(--text-white, #f0f6fc);
  line-height: 1.3;
}

.sd5f-reviewer-role {
  font-size: 12px;
  color: var(--text-muted, #8b949e);
  line-height: 1.3;
}

.sd5f-reviewer-stars {
  color: #f59e0b;
  font-size: 14px;
  letter-spacing: 2px;
}

.sd5f-reviewer-date {
  font-size: 12px;
  color: var(--text-muted, #8b949e);
}

.sd5f-reviewer-quote {
  font-size: 13px;
  color: var(--text-muted, #8b949e);
  line-height: 1.55;
  font-style: italic;
  border-left: 3px solid var(--border, #3d2d18);
  padding-left: 12px;
}

/* ─── Footer ─────────────────────────────────────────────────── */
footer {
  background: var(--bg-dark-2, #1a1208);
  border-top: 1px solid var(--border, #3d2d18);
  padding: 40px 16px 24px;
}

.sd5f-footer-inner {
  max-width: 900px;
  margin: 0 auto;
}

.sd5f-footer-top {
  margin-bottom: 24px;
}

.sd5f-footer-top .sd5f-logo {
  font-size: 20px;
  font-weight: 800;
  color: var(--text-white, #f0f6fc);
}

.sd5f-footer-links-section {
  display: flex;
  flex-wrap: wrap;
  gap: 40px;
  margin-bottom: 32px;
}

.sd5f-footer-links-col h4 {
  font-size: 13px;
  font-weight: 700;
  color: var(--text-muted, #8b949e);
  text-transform: uppercase;
  letter-spacing: 0.8px;
  margin-bottom: 14px;
}

.sd5f-footer-links-col a {
  display: block;
  font-size: 13px;
  color: var(--text-muted, #8b949e);
  margin-bottom: 8px;
  text-decoration: none;
}
.sd5f-footer-links-col a:hover { color: var(--text-white, #f0f6fc); }

.sd5f-footer-rg-badges {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
}

.sd5f-footer-age {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  background: #dc2626;
  color: #fff;
  font-size: 11px;
  font-weight: 800;
  border-radius: 6px;
  flex-shrink: 0;
}

.sd5f-footer-rg-badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-size: 12px;
  font-weight: 600;
  color: var(--text-muted, #8b949e);
  padding: 5px 10px;
  border: 1px solid var(--border, #3d2d18);
  border-radius: 6px;
  text-decoration: none;
  transition: border-color 0.2s;
}
.sd5f-footer-rg-badge:hover {
  border-color: var(--accent, #f97316);
  color: var(--text-white, #f0f6fc);
  text-decoration: none;
}

.sd5f-rg-icon { font-size: 14px; }

.sd5f-footer-bottom {
  padding-top: 20px;
  border-top: 1px solid var(--border, #3d2d18);
}

.sd5f-footer-copy {
  font-size: 13px;
  color: var(--text-muted, #8b949e);
  margin-bottom: 10px;
}

.sd5f-footer-disclaimer {
  font-size: 12px;
  color: rgba(139,148,158,0.7);
  line-height: 1.6;
}

/* ─── Responsive ─────────────────────────────────────────────── */
@media (max-width: 768px) {
  .sd5f-hero { padding: 32px 16px 28px; }
  .sd5f-hero-sub { font-size: 16px; }
  .sd5f-cta-btn { font-size: 15px; padding: 12px 22px; }

  .sd5f-reviewers-grid { grid-template-columns: 1fr; }

  .sd5f-footer-links-section { gap: 24px; }
}

@media (max-width: 640px) {
  .sd5f-author-box { padding: 16px; }
  .sd5f-author-box-inner { flex-direction: row; align-items: flex-start; }

  .sd5f-faq-question { font-size: 14px; padding: 14px 14px; }

  .sd5f-toc-block { padding: 0 12px; }

  .sd5f-footer-rg-badges { gap: 6px; }
}

/* ─── FAQ toggle via JS (fallback: all visible if JS disabled) ── */
/* JS in a-sd5f.js toggles .sd5f-open on .sd5f-faq-item */