/* ==========================================================================
   Forbidden Finance — Responsive Styles
   Mobile-first breakpoints, navigation, grid, typography scaling
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. Base (mobile-first, < 600px)
   -------------------------------------------------------------------------- */

/* Grid collapses to single column */
.grid--2,
.grid--3,
.grid--4 {
  grid-template-columns: 1fr;
}

/* Typography — slightly smaller display sizes on mobile */
.display-lg, .display-large,
.post-header__title {
  font-size: 26px;
  letter-spacing: -0.25px;
  line-height: 1.2;
}

.display-md, .display-medium {
  font-size: 22px;
  letter-spacing: -0.15px;
  line-height: 1.23;
}

.display-sm, .display-small {
  font-size: 20px;
  line-height: 1.25;
}

/* Container — smaller inline padding on mobile */
.container {
  padding-inline: var(--space-md);
}

/* Sections — reduced vertical spacing on mobile */
.section {
  padding-block: var(--space-xxl);
}

.section--lg {
  padding-block: var(--space-xxxl);
}

/* --------------------------------------------------------------------------
   2. Navigation — Mobile
   -------------------------------------------------------------------------- */

/* Hamburger toggle button */
.nav-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  background: none;
  border: none;
  cursor: pointer;
  color: var(--color-text-primary);
  padding: 0;
  z-index: 102;
}

/* Mobile nav: hidden off-screen by default */
.site-nav {
  position: fixed;
  top: 0;
  right: 0;
  width: min(320px, 85vw);
  height: 100vh;
  height: 100dvh;
  background: var(--color-surface);
  border-left: 1px solid var(--color-divider);
  z-index: 101;
  padding: calc(var(--space-xxxl) + var(--space-lg)) var(--space-lg) var(--space-lg);
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  transform: translateX(100%);
  transition: transform var(--transition-normal);
  overflow-y: auto;
}

.site-header.nav-open .site-nav {
  transform: translateX(0);
}

/* Nav links — full-width touch targets on mobile */
.site-nav__link {
  display: flex;
  align-items: center;
  padding: var(--space-md);
  font-size: var(--font-headline-sm-size);
  font-weight: var(--font-headline-sm-weight);
  color: var(--color-text-primary);
  border-radius: var(--radius-sm);
  min-height: 48px;
  transition:
    background-color var(--transition-fast),
    color var(--transition-fast);
}

.site-nav__link:hover {
  background: var(--color-glass-fill);
  color: var(--color-primary);
}

/* Nav overlay visible when open */
.site-header.nav-open .glass-overlay {
  opacity: 1;
  visibility: visible;
}

/* Touch target minimums */
.btn,
.site-nav__link,
.nav-toggle,
.faq-item__question {
  min-height: 48px;
}

/* --------------------------------------------------------------------------
   3. Hero Section — Mobile Stacking
   -------------------------------------------------------------------------- */

.hero {
  flex-direction: column;
  text-align: center;
  gap: var(--space-xl);
}

.hero__content {
  order: 1;
}

.hero__media {
  order: 2;
}

.hero__actions {
  flex-direction: column;
  width: 100%;
}

.hero__actions .btn {
  width: 100%;
}

/* --------------------------------------------------------------------------
   4. Tablet Breakpoint (>= 600px)
   -------------------------------------------------------------------------- */

@media (min-width: 600px) {
  /* Grid 2-col for tablet */
  .grid--2,
  .grid--3,
  .grid--4 {
    grid-template-columns: repeat(2, 1fr);
  }

  /* Typography scales up slightly */
  .display-lg, .display-large,
  .post-header__title {
    font-size: 30px;
  }

  .display-md, .display-medium {
    font-size: 26px;
  }

  .display-sm, .display-small {
    font-size: 22px;
  }

  /* Hero can go side by side if content permits */
  .hero__actions {
    flex-direction: row;
    width: auto;
  }

  .hero__actions .btn {
    width: auto;
  }

  /* Container padding increase */
  .container {
    padding-inline: var(--space-lg);
  }
}

/* --------------------------------------------------------------------------
   5. Desktop Breakpoint (>= 1200px)
   -------------------------------------------------------------------------- */

@media (min-width: 1200px) {
  /* Full grid columns */
  .grid--2 {
    grid-template-columns: repeat(2, 1fr);
  }

  .grid--3 {
    grid-template-columns: repeat(3, 1fr);
  }

  .grid--4 {
    grid-template-columns: repeat(4, 1fr);
  }

  /* Full typography sizes */
  .display-lg, .display-large,
  .post-header__title {
    font-size: var(--font-display-lg-size);
    letter-spacing: var(--font-display-lg-spacing);
    line-height: var(--font-display-lg-height);
  }

  .display-md, .display-medium {
    font-size: var(--font-display-md-size);
    letter-spacing: var(--font-display-md-spacing);
    line-height: var(--font-display-md-height);
  }

  .display-sm, .display-small {
    font-size: var(--font-display-sm-size);
    letter-spacing: var(--font-display-sm-spacing);
    line-height: var(--font-display-sm-height);
  }

  /* Navigation — Desktop horizontal layout */
  .nav-toggle {
    display: none;
  }

  .site-nav {
    position: static;
    width: auto;
    height: auto;
    background: none;
    border-left: none;
    padding: 0;
    flex-direction: row;
    align-items: center;
    gap: var(--space-xs);
    transform: none;
    transition: none;
    overflow: visible;
  }

  .site-nav__link {
    padding: var(--space-sm) var(--space-md);
    font-size: var(--font-label-lg-size);
    font-weight: var(--font-label-lg-weight);
  }

  /* Glass overlay not needed on desktop */
  .glass-overlay {
    display: none;
  }

  /* Hero — row layout on desktop */
  .hero {
    flex-direction: row;
    text-align: left;
  }

  .hero__content {
    order: unset;
  }

  .hero__media {
    order: unset;
  }

  /* Container can use larger padding */
  .container {
    padding-inline: var(--space-xl);
  }

  /* Sections — full vertical spacing */
  .section {
    padding-block: var(--space-xxxl);
  }

  .section--lg {
    padding-block: calc(var(--space-xxxl) * 1.5);
  }
}

/* --------------------------------------------------------------------------
   6. Reduced Motion
   -------------------------------------------------------------------------- */

@media (prefers-reduced-motion: reduce) {
  .site-nav {
    transition: none;
  }
}