/* ============================================================
   FISHKOOL — Base Styles: typography, layout primitives, utilities
   ============================================================ */

/* ---------- Typography ---------- */

h1, .h1 { font-size: var(--font-size-3xl); font-weight: var(--font-weight-light); letter-spacing: var(--letter-spacing-hero); }
h2, .h2 { font-size: var(--font-size-xl);  font-weight: var(--font-weight-light); letter-spacing: var(--letter-spacing-wide); }
h3, .h3 { font-size: var(--font-size-lg);  font-weight: var(--font-weight-medium); }
h4, .h4 { font-size: var(--font-size-md);  font-weight: var(--font-weight-semibold); }

p { line-height: var(--line-height-relaxed); color: var(--color-text-secondary); }

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

.lead { font-size: var(--font-size-md); line-height: var(--line-height-relaxed); color: var(--color-text-secondary); }

.section-kicker {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
  letter-spacing: var(--letter-spacing-wider);
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: var(--space-md);
}
.section-kicker::before {
  content: "";
  width: 24px;
  height: 2px;
  background: var(--color-accent);
}

/* ---------- Layout primitives ---------- */

.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--space-lg);
}

.container-narrow {
  max-width: var(--container-narrow);
  margin-inline: auto;
  padding-inline: var(--space-lg);
}

.section {
  padding-block: var(--space-3xl);
}
.section--gray { background-color: var(--color-bg-gray); }
.section--dark {
  background-color: var(--color-bg-dark);
  color: var(--color-text-inverse);
}
.section--dark p { color: rgba(255,255,255,0.72); }
.section--dark .lead { color: rgba(255,255,255,0.8); }

.section-head {
  max-width: 720px;
  margin-bottom: var(--space-2xl);
}
.section-head--center {
  margin-inline: auto;
  text-align: center;
}
.section-head--center .section-kicker::before { display: none; }
.section-head h2 { margin-bottom: var(--space-md); }

/* ---------- Grid utilities ---------- */

.grid-2 { display: grid; grid-template-columns: 1fr; gap: var(--space-xl); }
.grid-3 { display: grid; grid-template-columns: 1fr; gap: var(--space-lg); }
.grid-4 { display: grid; grid-template-columns: repeat(2, 1fr); gap: var(--space-lg); }

@media (min-width: 768px) {
  .grid-2 { grid-template-columns: repeat(2, 1fr); gap: var(--space-2xl); }
  .grid-3 { grid-template-columns: repeat(3, 1fr); gap: var(--space-xl); }
  .grid-4 { grid-template-columns: repeat(4, 1fr); }
}

/* ---------- Utilities ---------- */

.text-center { text-align: center; }

.visually-hidden {
  position: absolute;
  width: 1px; height: 1px;
  margin: -1px; padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

/* Skip link for accessibility */
.skip-link {
  position: absolute;
  top: -48px; left: var(--space-md);
  z-index: 1000;
  padding: var(--space-xs) var(--space-md);
  background: var(--color-primary);
  color: #fff;
  border-radius: 0 0 var(--radius-sm) var(--radius-sm);
  transition: top var(--transition-fast);
}
.skip-link:focus { top: 0; }

/* ---------- Scroll reveal animation ---------- */

[data-reveal] {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
[data-reveal].is-visible {
  opacity: 1;
  transform: translateY(0);
}
@media (prefers-reduced-motion: reduce) {
  [data-reveal] { opacity: 1; transform: none; transition: none; }
}