/* ===== Global styles ===== */
body {
  font-family: var(--font-main);
  font-size: var(--fs-body);
  font-weight: var(--fw-regular);
  color: var(--text-body);
  background: var(--bg-primary);
}

.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: clamp(1rem, 4vw, 2.5rem);
}

main { display: block; }

section { padding-block: var(--space-section); }
section + section { padding-top: 0; }

/* Headings */
h1 { font-size: var(--fs-h1); font-weight: var(--fw-extrabold); color: var(--white); }
h2 {
  font-size: var(--fs-h2);
  font-weight: var(--fw-bold);
  color: var(--heading-gold);
  position: relative;
  padding-bottom: 0.5rem;
}
h2::after {
  content: "";
  display: block;
  width: 64px;
  height: 3px;
  margin-top: 0.6rem;
  background: var(--heading-gold);
  border-radius: 2px;
}
h3 { font-size: var(--fs-h3); font-weight: var(--fw-semibold); color: var(--white); }

/* Text content blocks */
.content-block h2 { margin-bottom: var(--space-h2-text); }
.content-block h3 { margin-top: var(--space-paragraph); margin-bottom: var(--space-h3-text); }
.content-block p { margin-bottom: var(--space-paragraph); }
.content-block p:last-child { margin-bottom: 0; }

.content-block ul,
.content-block ol { margin-bottom: var(--space-paragraph); padding-left: 1.25rem; display: grid; gap: 0.5rem; }
.content-block ul li { list-style: disc; }
.content-block ol { list-style: none; counter-reset: step; padding-left: 0; }
.content-block ol > li {
  counter-increment: step;
  position: relative;
  padding-left: 2.25rem;
}
.content-block ol > li::before {
  content: counter(step);
  position: absolute;
  left: 0; top: 0;
  width: 1.6rem; height: 1.6rem;
  display: grid; place-items: center;
  background: var(--btn-gradient);
  color: var(--btn-dark-text);
  font-weight: var(--fw-bold);
  border-radius: 50%;
  font-size: 0.85rem;
}
.content-block ol ul { margin-top: 0.5rem; margin-bottom: 0; }
.content-block ul ul { margin-top: 0.5rem; margin-bottom: 0; }
.content-block a:not(.btn) { color: var(--accent-green); text-decoration: underline; text-underline-offset: 3px; }
.content-block a:not(.btn):hover { color: var(--accent-light); }

/* Contextual internal links — stand out in the body text */
.content-block a.ilink {
  color: var(--accent-green);
  font-weight: var(--fw-semibold);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 1.5px;
  transition: color var(--transition-base);
}
.content-block a.ilink:hover { color: var(--accent-light); }
.content-block strong { color: var(--white); font-weight: var(--fw-semibold); }

/* Content-section images — must display fully, no cropping */
.content-figure {
  margin: var(--space-h2-text) 0 var(--space-paragraph);
  border-radius: var(--radius-card);
  overflow: hidden;
  background: var(--bg-dark);
}
.content-figure img {
  width: 100%;
  height: auto;
  object-fit: contain;
}

/* Tables */
.table-wrap { overflow-x: auto; margin-bottom: var(--space-paragraph); }
table.data-table {
  background: var(--card-bg);
  border-radius: var(--radius-card);
  overflow: hidden;
  min-width: 480px;
}
table.data-table caption {
  caption-side: top;
  text-align: left;
  color: var(--white);
  font-weight: var(--fw-semibold);
  padding-bottom: 0.6rem;
}
table.data-table th,
table.data-table td {
  padding: 0.85rem 1.1rem;
  text-align: left;
  vertical-align: top;
  border-bottom: 1px solid rgba(241, 244, 244, 0.08);
}
table.data-table thead th {
  background: var(--bg-dark);
  color: var(--heading-gold);
  font-weight: var(--fw-semibold);
}
table.data-table tbody tr:last-child td { border-bottom: none; }
table.data-table tbody th { color: var(--white); font-weight: var(--fw-semibold); }

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.8rem 1.6rem;
  border-radius: var(--radius-card);
  font-weight: var(--fw-bold);
  text-align: center;
  text-decoration: none;
  transition: transform var(--transition-base), filter var(--transition-base), background var(--transition-base), color var(--transition-base);
}
.btn--primary { background: var(--btn-gradient); color: var(--btn-dark-text); }
.btn--primary:hover { filter: brightness(1.05); transform: translateY(-2px); color: var(--btn-hover-text); }
.btn--secondary {
  background: transparent;
  border: 1px solid var(--btn-secondary-border);
  color: var(--white);
}
.btn--secondary:hover { background: rgba(193, 138, 46, 0.15); }
.btn--register { background: var(--accent-green); color: var(--btn-dark-text); }
.btn--register:hover { filter: brightness(1.08); transform: translateY(-2px); color: var(--btn-hover-text); }

.section-cta { margin-top: var(--space-paragraph); }

/* Breadcrumb */
.breadcrumb { padding-block: 1rem 0; }
.breadcrumb ol { display: flex; flex-wrap: wrap; gap: 0.4rem; align-items: center; font-size: 0.85rem; }
.breadcrumb li { display: flex; align-items: center; gap: 0.4rem; }
.breadcrumb li:not(:last-child)::after { content: "›"; color: var(--text-body); }
.breadcrumb a { color: var(--text-body); }
.breadcrumb a:hover { color: var(--accent-light); }
.breadcrumb [aria-current="page"] { color: var(--white); }

/* Intro */
.intro p { margin-bottom: var(--space-paragraph); }
.intro p:last-child { margin-bottom: 0; }

/* Characteristics table intro heading */
.facts-heading { color: var(--white); margin-bottom: var(--space-h2-text); }

/* Skip link */
.skip-link {
  position: absolute;
  left: 0; top: -60px;
  background: var(--accent-green);
  color: var(--btn-dark-text);
  padding: 0.7rem 1.2rem;
  font-weight: var(--fw-bold);
  border-radius: 0 0 var(--radius-card) 0;
  z-index: 1000;
  transition: top var(--transition-base);
}
.skip-link:focus { top: 0; }

/* Focus visibility */
a:focus-visible,
button:focus-visible,
[tabindex]:focus-visible {
  outline: 3px solid var(--accent-light);
  outline-offset: 2px;
  border-radius: 4px;
}

/* Fade-in animation */
.fade-in { opacity: 0; transform: translateY(24px); transition: opacity 0.6s ease, transform 0.6s ease; }
.fade-in.is-visible { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .fade-in { opacity: 1; transform: none; }
}

/* Scroll-to-top button */
.to-top {
  position: fixed;
  right: clamp(1rem, 3vw, 2rem);
  bottom: clamp(1rem, 3vw, 2rem);
  width: 48px; height: 48px;
  display: grid; place-items: center;
  background: var(--btn-gradient);
  color: var(--btn-dark-text);
  border-radius: 50%;
  box-shadow: var(--shadow-card);
  opacity: 0; visibility: hidden;
  transform: translateY(12px);
  transition: opacity var(--transition-base), transform var(--transition-base), visibility var(--transition-base);
  z-index: 900;
}
.to-top.is-visible { opacity: 1; visibility: visible; transform: none; }
.to-top svg { width: 22px; height: 22px; }

/* Section intro paragraph directly under H2 */
.content-block { margin-bottom: var(--space-section); }
.content-block:last-child { margin-bottom: 0; }