/* ============================================================
   Layout — Organic Ambient
   Fluid containers, organic utilities, ambient backgrounds
   ============================================================ */

body {
  font-family: var(--font-body);
  font-size: var(--text-base);
  color: var(--color-text);
  background-color: var(--color-bg);
  background-image: var(--color-bg-ambient);
  background-attachment: fixed;
}

/* ── Containers ── */
.container {
  width: 100%;
  max-width: 480px;
  margin: 0 auto;
  padding: 0 var(--space-md);
}

.container-wide {
  max-width: 960px;
}

/* ── Page Shell ── */
.page {
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
}

.page-content {
  flex: 1;
  padding: var(--space-lg) 0;
  animation: fade-in var(--duration-fade-in) var(--ease-out-soft) both;
}

/* ── Accessibility ── */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* ── Text Alignment ── */
.text-center {
  text-align: center;
}

/* ── Flex Utilities ── */
.flex-center {
  display: flex;
  align-items: center;
  justify-content: center;
}

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

/* ── Gap Utilities ── */
.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);
}

/* ── Organic Decorative Utilities ── */
.bg-glass {
  background: var(--gradient-glass);
  backdrop-filter: blur(var(--blur-md));
}

.bg-ambient {
  background-image: var(--color-bg-ambient);
}

.shadow-ambient {
  box-shadow: var(--shadow-ambient);
}

/* ── Ambient Blob Background ── */
.blob-bg {
  position: fixed;
  border-radius: var(--radius-blob);
  opacity: 0.4;
  filter: blur(var(--blur-lg));
  pointer-events: none;
  animation: morph var(--duration-morph) var(--ease-breathe) infinite;
  z-index: -1;
}

.blob-bg--warm {
  background: var(--gradient-warm);
}

.blob-bg--aurora {
  background: var(--gradient-aurora);
}