/* ═══════════════════════════════════════════════════════════
   RESPONSIVE STYLES
   Mobile-First Approach
   ═══════════════════════════════════════════════════════════ */

/* ─────────────────────────────────────────────────────────────
   MOBILE (Base styles apply to all devices)
   ───────────────────────────────────────────────────────────── */

/* Mobile Navigation */
.header__nav {
  display: none;
}

.nav-toggle {
  display: block;
}

.nav-mobile {
  position: fixed;
  inset: 0;
  z-index: 99;
  background: var(--bg-primary);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: var(--space-lg);
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease;
}

.nav-mobile.is-open {
  opacity: 1;
  visibility: visible;
}

.nav-mobile__link {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 600;
  color: var(--text-primary);
  text-decoration: none;
  transition: color 0.2s ease;
}

.nav-mobile__link:hover {
  color: var(--accent);
}

/* Mobile Sections */
.section {
  padding: var(--space-2xl) 0;
}

.section--hero {
  padding-top: 100px;
  min-height: auto;
}

/* Mobile Anchor */
.anchor__contrast {
  flex-direction: column;
  gap: var(--space-xs);
}

.anchor__social {
  margin-left: 0;
  margin-top: var(--space-md);
  padding-left: 0;
  border-left: none;
}

.anchor__actions {
  flex-direction: column;
  align-items: flex-start;
}

/* Mobile Cases */
.case {
  grid-template-columns: 1fr;
  padding: var(--space-lg) 0;
}

.case::before {
  display: none;
}

.case__result-hero {
  padding-right: 0;
}

.case__body {
  padding-left: 0;
}

.case__visual {
  max-width: 100%;
}

.case__result-hero .case__result-value {
  font-size: clamp(2rem, 8vw, 3rem);
}

/* Mobile Validation */
.validation__editorial {
  gap: var(--space-2xl);
}

.testimonial__quote--large {
  font-size: clamp(1.25rem, 4vw, 1.75rem);
}

/* Mobile Lens */
.principle {
  flex-wrap: wrap;
}

.principle__title {
  flex-basis: 100%;
  margin-top: var(--space-xs);
}

/* Mobile Gate */
.form-row {
  grid-template-columns: 1fr;
}

/* Mobile Footer */
.footer__inner {
  flex-direction: column;
  gap: var(--space-md);
  text-align: center;
}

/* ─────────────────────────────────────────────────────────────
   TABLET (768px and up)
   ───────────────────────────────────────────────────────────── */

@media (min-width: 768px) {
  .container {
    padding: 0 var(--space-lg);
  }

  .section {
    padding: var(--space-2xl) 0;
    padding-top: calc(var(--space-2xl) * 1.3);
    padding-bottom: calc(var(--space-2xl) * 1.3);
  }

  /* Tablet Navigation */
  .header__nav {
    display: flex;
  }

  .nav-toggle {
    display: none;
  }

  /* Tablet Anchor */
  .anchor__contrast {
    flex-direction: row;
    gap: var(--space-lg);
  }

  .anchor__actions {
    flex-direction: row;
    align-items: center;
  }

  .anchor__social {
    margin-left: var(--space-md);
    margin-top: 0;
    padding-left: var(--space-md);
    border-left: 1px solid var(--border-subtle);
  }

  /* Tablet Lens */
  .principle {
    flex-wrap: nowrap;
  }

  .principle__title {
    flex-basis: auto;
    margin-top: 0;
  }

  /* Tablet Gate */
  .form-row {
    grid-template-columns: 1fr 1fr;
  }

  /* Tablet Footer */
  .footer__inner {
    flex-direction: row;
    text-align: left;
  }
}

/* ─────────────────────────────────────────────────────────────
   DESKTOP (1024px and up)
   ───────────────────────────────────────────────────────────── */

@media (min-width: 1024px) {
  .section {
    padding: var(--space-3xl) 0;
    padding-top: calc(var(--space-3xl) * 1.3);
    padding-bottom: calc(var(--space-3xl) * 1.3);
  }

  .section--hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 140px;
  }

  /* Desktop Cases - asymmetric layout */
  .case {
    display: grid;
    grid-template-columns: minmax(200px, 380px) 1fr minmax(240px, 280px);
    grid-template-rows: auto auto;
    gap: var(--space-md) var(--space-lg);
    align-items: start;
    padding: var(--space-xl) 0;
    position: relative;
  }

  .case::before {
    content: "";
    position: absolute;
    left: calc(min(380px, 35%) + var(--space-lg) / 2);
    top: 15%;
    height: 70%;
    width: 1px;
    background: rgba(255, 255, 255, 0.03);
  }

  .case__result-hero {
    grid-column: 1;
    grid-row: 1 / 3;
    padding-right: var(--space-sm);
  }

  .case__body {
    grid-column: 2;
    grid-row: 1 / 3;
  }

  .case__category {
    margin-top: -0.125rem;
  }

  .case__visual {
    grid-column: 3;
    grid-row: 1 / 3;
    max-width: 280px;
  }
}

/* ─────────────────────────────────────────────────────────────
   LARGE DESKTOP (1280px and up)
   ───────────────────────────────────────────────────────────── */

@media (min-width: 1280px) {
  .container {
    padding: 0 var(--space-xl);
  }
}

/* ─────────────────────────────────────────────────────────────
   REDUCED MOTION
   ───────────────────────────────────────────────────────────── */

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  html {
    scroll-behavior: auto;
  }

  [data-animate] {
    opacity: 1;
    transform: none;
  }
}