/* ==========================================================
   layout.css — Grid backgrounds, orbs, section wrappers,
                shared utilities & animations
   JCG Info Tech
   ========================================================== */

/* ── Grid background ── */
.grid-bg {
  position: fixed;
  inset: 0;
  z-index: var(--z-bg);
  background-image:
    linear-gradient(rgba(0, 210, 180, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 210, 180, 0.04) 1px, transparent 1px);
  background-size: 60px 60px;
  pointer-events: none;
}

/* ── Glow orbs ── */
.orb {
  position: fixed;
  border-radius: 50%;
  filter: blur(120px);
  pointer-events: none;
  z-index: var(--z-bg);
}

.orb-1 {
  width: 700px;
  height: 700px;
  background: rgba(30, 58, 95, 0.5);  /* Navy glow */
  top: -250px;
  left: -200px;
}

.orb-2 {
  width: 500px;
  height: 500px;
  background: rgba(0, 210, 180, 0.06); /* Cyan accent glow */
  bottom: -100px;
  right: -100px;
}

/* ── Section base ── */
section {
  position: relative;
  z-index: var(--z-base);
  padding: var(--space-2xl) var(--page-padding);
}

/* ── Section header elements ── */
.section-tag {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-cyan);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  margin-bottom: 1.2rem;
}

.section-title {
  font-size: clamp(2rem, 4vw, 3.2rem);
  margin-bottom: 1.2rem;
}

.section-sub {
  color: var(--color-muted);
  font-size: var(--text-md);
  max-width: 520px;
  line-height: 1.7;
}

/* ── Shared buttons ── */
.btn-primary {
  display: inline-block;
  background: var(--color-cyan);
  color: var(--color-black);
  padding: 0.9rem 2.2rem;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--text-base);
  letter-spacing: 0.02em;
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.btn-primary::after {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(255, 255, 255, 0.15);
  transform: translateX(-100%);
  transition: transform 0.3s;
}

.btn-primary:hover::after {
  transform: translateX(0);
}

.btn-secondary {
  display: inline-block;
  border: 1px solid var(--color-border);
  color: var(--color-white);
  padding: 0.9rem 2.2rem;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: var(--text-base);
  transition: all var(--transition-normal);
  background: transparent;
}

.btn-secondary:hover {
  border-color: var(--color-cyan);
  color: var(--color-cyan);
}

/* ── Section tag centered modifier ── */
.section-tag--center {
  display: flex;
  justify-content: center;
}

/* ── Section sub bottom spacing modifier ── */
.section-sub--spaced {
  margin-bottom: 2.5rem;
}

/* ── Tag pill ── */
.tag {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  padding: 0.25rem 0.7rem;
  border: 1px solid var(--color-border);
  color: var(--color-muted);
  letter-spacing: 0.05em;
}

/* ── Scroll fade-up animation ── */
.fade-up {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.fade-up.visible {
  opacity: 1;
  transform: translateY(0);
}