/* ==========================================================================
   XEANLAB — MINIMALIST, BOLD & ELEGANT SPECIFICATION
   Strict adherence to DESIGN.md
   Zero clutter, expansive negative space, timeless typography
   ========================================================================== */

/* Fullscreen Background Graph */
#hero-network-canvas {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  pointer-events: none;
  display: block;
}

/* Page Frame: Full Viewport Architectural Composition */
.page-frame {
  position: relative;
  z-index: 1;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

/* Minimal Top Bar */
.site-header {
  width: 100%;
  padding-top: var(--space-xl);
  padding-bottom: var(--space-xl);
}

.header-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand-mark {
  display: inline-flex;
  align-items: center;
  text-decoration: none;
  color: var(--color-ink);
}

.brand-name {
  font-size: 16px;
  font-weight: var(--weight-medium);
  letter-spacing: -0.4px;
  text-transform: uppercase;
  color: var(--color-ink);
}

/* Centerpiece: Bold, Spacious, Elegant */
.hero-center {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding-top: var(--space-band);
  padding-bottom: var(--space-band);
}

.hero-box {
  max-width: 860px;
  text-align: center;
  margin: 0 auto;
}

/* Overline Kicker (Recopywritten per Blue Mark) */
.hero-category {
  font-family: var(--font-interactive);
  font-size: 12px;
  font-weight: var(--weight-medium);
  letter-spacing: 2px;
  text-transform: uppercase;
  color: #7A7067;
  margin-bottom: var(--space-lg);
  display: block;
}

/* Display XXL (DESIGN.md: 100.8px, line-height: 0.95, letter-spacing: -3.02px) */
.hero-title {
  font-size: clamp(68px, 12vw, 116px);
  line-height: var(--type-display-xxl-lh);
  letter-spacing: var(--type-display-xxl-tracking);
  font-weight: var(--weight-regular);
  color: var(--color-ink);
  text-transform: uppercase;
  margin-bottom: var(--space-lg);
}

.hero-title .brand-accent {
  color: #9C6700;
}

/* Elegant Light Subtitle */
.hero-tagline {
  font-size: clamp(22px, 3.5vw, 32px);
  line-height: 1.25;
  letter-spacing: -0.9px;
  font-weight: var(--weight-light);
  color: var(--color-ink);
  margin-bottom: var(--space-xxxl);
  max-width: 680px;
  margin-left: auto;
  margin-right: auto;
}

/* Action Controls (DESIGN.md Spec) */
/* min-height prevents collapse — button uses transform, stays in flow */
.hero-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
}

/* Primary Button: 44px, 12px radius, #FFCD6D */
.btn-primary {
  height: 44px;
  padding: 0 32px;
  background-color: var(--color-primary);
  color: var(--color-ink);
  font-family: var(--font-interactive);
  font-size: var(--type-button-size);
  font-weight: var(--weight-medium);
  border-radius: var(--rounded-lg);
  border: none;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: opacity var(--transition-fast), background-color var(--transition-fast);
}

.btn-primary:hover {
  opacity: 0.85;
  background-color: var(--color-accent);
}

.btn-primary:active {
  transform: translateY(1px);
}

/* Minimal Centered Footer */
.site-footer {
  padding-top: var(--space-xl);
  padding-bottom: var(--space-xl);
}

.footer-row {
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12.5px;
  color: #8A8883;
}

/* Responsive Adaptations */
@media (max-width: 640px) {
  .hero-title {
    font-size: 60px;
    letter-spacing: -2px;
  }
  .hero-tagline {
    font-size: 20px;
    letter-spacing: -0.6px;
  }
}