/* Sakura Shiba Foundation – Heartfelt Medical Design System */
:root {
  --sf-primary: #884c60;
  --sf-primary-container: #eea4ba;
  --sf-surface: #f9f9ff;
  --sf-surface-container: #ecedf6;
  --sf-on-surface: #181c22;
  --sf-on-surface-variant: #514347;
  --sf-outline-variant: #d6c2c6;
  --sf-secondary: #4f5e7e;
}
html { scroll-behavior: smooth; }
.soft-shadow { box-shadow: 0 10px 30px -5px rgba(27, 43, 72, 0.08); }
.ambient-shadow { box-shadow: 0 10px 40px -10px rgba(27, 43, 72, 0.08); }
.glass-nav { backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px); }
.kenko-card {
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(214, 194, 198, 0.3);
  border-radius: 1rem;
}
.kenko-glow { box-shadow: 0 0 30px rgba(136, 76, 96, 0.25); }
.brand-heading { font-weight: 700; letter-spacing: -0.02em; }
.brand-section-title { font-weight: 600; letter-spacing: 0.01em; line-height: 1.2; }
.brand-subtitle { font-weight: 300; letter-spacing: 0.1em; text-transform: uppercase; }
.brand-label { font-weight: 400; letter-spacing: 0.2em; text-transform: uppercase; }

/* Animations */
@keyframes slideInLeft {
  from { opacity: 0; transform: translateX(-30px); }
  to   { opacity: 1; transform: translateX(0); }
}
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(20px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes fadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}
.animate-slide-in-left { animation: slideInLeft 0.8s ease-out both; }
.animate-fade-in-up { animation: fadeInUp 0.8s ease-out 0.2s both; }
.animate-fade-in { animation: fadeIn 0.6s ease-out both; }

/* Scroll reveal */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s ease-out, transform 0.7s ease-out;
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Mobile Menu Overlay */
#mobile-menu-overlay {
  position: fixed;
  inset: 0;
  z-index: 100;
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}
#mobile-menu-overlay.open {
  opacity: 1;
  pointer-events: auto;
}
#mobile-menu-panel {
  position: fixed;
  top: 0;
  right: 0;
  z-index: 101;
  width: 80%;
  max-width: 320px;
  height: 100%;
  background: var(--sf-surface);
  transform: translateX(100%);
  transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: -8px 0 30px rgba(0, 0, 0, 0.15);
  overflow-y: auto;
}
#mobile-menu-panel.open {
  transform: translateX(0);
}

/* Hero gradient overlay */
.hero-gradient {
  background: linear-gradient(
    135deg,
    rgba(249, 249, 255, 0.92) 0%,
    rgba(249, 249, 255, 0.7) 40%,
    rgba(249, 249, 255, 0.3) 70%,
    transparent 100%
  );
}