/* ==========================================================================
   u.cash - Responsive Design
   Mobile-first media queries, containers, section spacing per breakpoint.
   ========================================================================== */

/* ---- Container ---- */

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

.container-sm {
  max-width: var(--container-sm);
}

.container-md {
  max-width: var(--container-md);
}

.container-lg {
  max-width: var(--container-lg);
}

.container-2xl {
  max-width: var(--container-2xl);
}

.container-fluid {
  max-width: 100%;
}

/* ---- Section Spacing (Mobile First) ---- */

.section {
  padding-block: var(--space-3xl);
  position: relative;
}

.section-sm {
  padding-block: var(--space-2xl);
}

.section-lg {
  padding-block: var(--space-4xl);
}

.section-header {
  margin-bottom: var(--space-2xl);
  text-align: center;
}

.section-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: 0.35rem 1rem;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-gold-primary);
  background: var(--color-gold-subtle);
  border: 1px solid var(--color-gold-muted);
  border-radius: var(--radius-full);
  margin-bottom: var(--space-md);
}

.section-title {
  font-family: var(--font-heading);
  font-size: clamp(1.75rem, 4vw, 2.75rem);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.02em;
  color: var(--color-text-primary);
  margin-bottom: var(--space-md);
}

.section-description {
  font-size: var(--text-lg);
  color: var(--color-text-secondary);
  line-height: var(--leading-relaxed);
  max-width: 640px;
  margin-inline: auto;
}

/* ---- Grid System ---- */

.grid {
  display: grid;
  gap: var(--space-lg);
}

.grid-2 { grid-template-columns: 1fr; }
.grid-3 { grid-template-columns: 1fr; }
.grid-4 { grid-template-columns: 1fr; }
.grid-6 { grid-template-columns: repeat(2, 1fr); }

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

.flex {
  display: flex;
}

.flex-col {
  flex-direction: column;
}

.flex-wrap {
  flex-wrap: wrap;
}

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

.items-start {
  align-items: flex-start;
}

.items-end {
  align-items: flex-end;
}

.justify-center {
  justify-content: center;
}

.justify-between {
  justify-content: space-between;
}

.justify-end {
  justify-content: flex-end;
}

.gap-xs { gap: var(--space-xs); }
.gap-sm { gap: var(--space-sm); }
.gap-md { gap: var(--space-md); }
.gap-lg { gap: var(--space-lg); }
.gap-xl { gap: var(--space-xl); }
.gap-2xl { gap: var(--space-2xl); }

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

.hidden {
  display: none !important;
}

.block {
  display: block;
}

.inline-block {
  display: inline-block;
}

/* ---- Breakpoint: Smartwatch (248px+) ---- */

@media (min-width: 248px) {
  .container {
    padding-inline: 1rem;
  }
}

/* ---- Breakpoint: Mobile (384px+) ---- */

@media (min-width: 384px) {
  .container {
    padding-inline: 1.25rem;
  }

  .section {
    padding-block: calc(var(--space-3xl) + 0.5rem);
  }
}

/* ---- Breakpoint: Mobile Large (576px+) ---- */

@media (min-width: 576px) {
  .container {
    padding-inline: 1.5rem;
  }

  .grid-2 { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .grid-6 { grid-template-columns: repeat(3, 1fr); }

  .section {
    padding-block: var(--space-4xl);
  }

  .section-lg {
    padding-block: calc(var(--space-4xl) + 1rem);
  }
}

/* ---- Breakpoint: Tablet (768px+) ---- */

@media (min-width: 768px) {
  .container {
    padding-inline: 2rem;
  }

  .grid-3 { grid-template-columns: repeat(3, 1fr); }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .grid-6 { grid-template-columns: repeat(3, 1fr); }

  .section {
    padding-block: calc(var(--space-4xl) + 1rem);
  }

  .section-lg {
    padding-block: var(--space-5xl);
  }

  .section-header {
    margin-bottom: var(--space-3xl);
  }

  /* Show/hide utilities */
  .hide-tablet { display: none !important; }
  .show-tablet { display: block !important; }
}

/* ---- Breakpoint: Desktop (992px+) ---- */

@media (min-width: 992px) {
  .container {
    padding-inline: 2.5rem;
  }

  .grid-4 { grid-template-columns: repeat(4, 1fr); }
  .grid-6 { grid-template-columns: repeat(3, 1fr); }

  .section {
    padding-block: var(--space-5xl);
  }

  .section-lg {
    padding-block: calc(var(--space-5xl) + 2rem);
  }

  /* Show/hide utilities */
  .hide-desktop { display: none !important; }
  .show-desktop { display: block !important; }
}

/* ---- Breakpoint: Large Desktop (1200px+) ---- */

@media (min-width: 1200px) {
  .container {
    padding-inline: 3rem;
  }

  .grid-6 { grid-template-columns: repeat(6, 1fr); }

  .section {
    padding-block: calc(var(--space-5xl) + 2rem);
  }
}

/* ---- Breakpoint: HD Monitor (1536px+) ---- */

@media (min-width: 1536px) {
  .container {
    padding-inline: 4rem;
  }
}

/* ---- Breakpoint: 4K (2560px+) ---- */

@media (min-width: 2560px) {
  html {
    font-size: 1.125rem;
  }

  .container {
    max-width: 1600px;
    padding-inline: 5rem;
  }

  .section {
    padding-block: 8rem;
  }
}

/* ---- Mobile-first visibility ---- */

.show-mobile {
  display: block !important;
}

.hide-mobile {
  display: none !important;
}

@media (min-width: 768px) {
  .show-mobile {
    display: none !important;
  }

  .hide-mobile {
    display: block !important;
  }
}

/* ---- Responsive text alignment ---- */

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

@media (min-width: 768px) {
  .text-center-mobile {
    text-align: left;
  }
}

/* ---- Responsive spacing adjustments ---- */

@media (max-width: 575.98px) {
  .section-header h2 {
    font-size: var(--text-3xl);
  }

  .section-header p {
    font-size: var(--text-sm);
  }
}