/* ==============================================
   BASE — Typography, Body, Global Styles
   ============================================== */

/* --- Body --- */
html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family-base);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-normal);
  line-height: var(--line-height-normal);
  color: var(--color-text-primary);
  background-color: var(--color-white);
}

/* --- Typography: Headings --- */
h1, h2, h3, h4, h5, h6 {
  font-weight: var(--font-weight-bold);
  line-height: var(--line-height-tight);
  color: var(--color-text-primary);
  letter-spacing: -0.015em;
}

p {
  text-wrap: pretty;
}

.heading-1 {
  font-size: clamp(var(--font-size-3xl), 5vw, var(--font-size-5xl));
  font-weight: var(--font-weight-extrabold);
  line-height: var(--line-height-tight);
  letter-spacing: -0.03em;
  text-wrap: balance;
}

.heading-2 {
  font-size: clamp(var(--font-size-2xl), 4vw, var(--font-size-4xl));
  font-weight: var(--font-weight-bold);
  line-height: var(--line-height-tight);
  letter-spacing: -0.025em;
  text-wrap: balance;
}

.heading-3 {
  font-size: clamp(var(--font-size-xl), 3vw, var(--font-size-2xl));
  font-weight: var(--font-weight-semibold);
  line-height: var(--line-height-snug);
}

.heading-4 {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  line-height: var(--line-height-snug);
}

/* --- Links --- */
a {
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--color-accent);
}

/* --- Focus States --- */
:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

/* --- Selection --- */
::selection {
  background-color: var(--color-accent);
  color: var(--color-white);
}

/* --- Paragraphs --- */
p {
  margin-bottom: 0;
}

p + p {
  margin-top: var(--space-4);
}

/* --- Body Lock (for menu open) --- */
body.is-menu-open {
  overflow: hidden;
}

/* === Responsive Typography === */
@media (max-width: 767px) {
  .heading-4 {
    font-size: var(--font-size-base);
  }

  .section-subtitle {
    font-size: var(--font-size-sm);
  }
}