/* ═══════════════════════════════════════════════════════════════
   KRITEXA LABS — UTILITIES & PRIMITIVES
   css/utilities.css
   Phase 2 — Global Design System

   This file defines the layout primitives, typography scale utilities,
   spacing scales, buttons, badges, and reveal animations. It relies
   entirely on design tokens.
═══════════════════════════════════════════════════════════════ */

/* ═══ LAYOUT / CONTAINER ═══ */
.container {
  width: 100%;
  max-width: var(--container-max-width);
  margin-inline: auto;
  padding-inline: var(--container-padding);
}

/* ═══ GRADIENT TEXT ═══ */
.grad-text {
  background: var(--gradient-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ═══ SECTION SPACING ═══ */
.section {
  padding-block: var(--space-13);
  position: relative;
  z-index: var(--z-base);
}
.section-sm {
  padding-block: var(--space-12);
  position: relative;
  z-index: var(--z-base);
}

/* ═══ SCROLL REVEAL ANIMATIONS ═══ */
.rv {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity var(--duration-slow) var(--ease-standard),
              transform var(--duration-slow) var(--ease-standard);
}
/* Fallback: ensure rv elements inside active pages are never permanently hidden */
.page.active .rv.on,
.page.active .rv-l.on,
.page.active .rv-r.on {
  opacity: 1;
  transform: none;
}
.rv.on {
  opacity: 1;
  transform: none;
}
.rv-l {
  opacity: 0;
  transform: translateX(-24px);
  transition: opacity var(--duration-slow) var(--ease-standard),
              transform var(--duration-slow) var(--ease-standard);
}
.rv-l.on {
  opacity: 1;
  transform: none;
}
.rv-r {
  opacity: 0;
  transform: translateX(24px);
  transition: opacity var(--duration-slow) var(--ease-standard),
              transform var(--duration-slow) var(--ease-standard);
}
.rv-r.on {
  opacity: 1;
  transform: none;
}

/* ═══ NOISE TEXTURE OVERLAY ═══ */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)' opacity='0.04'/%3E%3C/svg%3E");
  pointer-events: none;
  z-index: var(--z-base);
  opacity: 0.4;
}

/* ═══ SECTION HEADING ═══ */
.sh {
  text-align: center;
  margin-bottom: var(--space-11);
}
.sh-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-family-mono);
  font-size: var(--font-size-caption);
  letter-spacing: var(--letter-spacing-mono);
  text-transform: uppercase;
  color: var(--color-purple2);
  margin-bottom: var(--space-4);
}
.sh-eyebrow::before,
.sh-eyebrow::after {
  content: '';
  width: 20px;
  height: 1px;
  background: var(--color-purple2);
  opacity: 0.5;
}
.sh h2 {
  font-size: var(--font-size-section-heading);
  font-weight: var(--font-weight-black);
  letter-spacing: var(--letter-spacing-section);
  line-height: var(--line-height-tight-heading);
  margin-bottom: var(--space-4);
}
.sh p {
  font-size: var(--font-size-body-lg);
  color: var(--color-gray);
  max-width: 540px;
  margin-inline: auto;
  line-height: var(--line-height-relaxed);
}

/* ═══ BUTTONS FOUNDATION ═══ */
/* Primary Button */
.btn-p {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: 13px 26px;
  border-radius: var(--radius-sm);
  background: var(--color-purple);
  color: var(--color-white);
  font-size: var(--font-size-body);
  font-weight: var(--font-weight-semibold);
  box-shadow: var(--shadow-btn-p);
  transition: all var(--duration-normal) var(--ease-standard);
  cursor: pointer;
  border: none;
  font-family: inherit;
}
.btn-p:hover {
  background: var(--color-purple-hover);
  transform: translateY(-2px);
  box-shadow: var(--shadow-btn-p-hover);
}
.btn-p:focus-visible {
  outline: 2px solid var(--color-white);
  outline-offset: 2px;
}

/* Ghost / Outline Button */
.btn-g {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: 12px 26px;
  border-radius: var(--radius-sm);
  background: transparent;
  border: 1px solid var(--color-border);
  color: var(--color-white);
  font-size: var(--font-size-body);
  font-weight: var(--font-weight-medium);
  transition: all var(--duration-normal) var(--ease-standard);
  cursor: pointer;
  font-family: inherit;
}
.btn-g:hover {
  border-color: var(--color-border-purple);
  background: rgba(124, 58, 237, 0.06);
  transform: translateY(-2px);
}
.btn-g:focus-visible {
  outline: 2px solid var(--color-purple2);
  outline-offset: 2px;
}

/* Icon / Arrow Transition */
.btn-icon {
  transition: transform var(--transition-duration-fast) var(--ease-standard);
}
.btn-p:hover .btn-icon,
.btn-g:hover .btn-icon {
  transform: translateX(3px);
}

/* ═══ BADGE / TAG ═══ */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  border-radius: var(--radius-pill);
  font-family: var(--font-family-mono);
  font-size: 10.5px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  border: 1px solid var(--color-border-purple);
  color: var(--color-purple2);
  background: rgba(124, 58, 237, 0.06);
}