/* ==========================================
   Thở Đi Con — Landing Page Styles
   Saffron Zen / Digital Sanctuary theme
   ========================================== */

/* ----- Base ----- */
body {
  font-family: 'Inter', sans-serif;
  background-color: #f8f7f6;
  color: #221910;
  overflow-x: hidden;
}

/* ----- Scrollbar ----- */
.no-scrollbar::-webkit-scrollbar { display: none; }
.no-scrollbar { -ms-overflow-style: none; scrollbar-width: none; }

/* ----- Material Symbols ----- */
.material-symbols-outlined {
  font-variation-settings: 'FILL' 0, 'wght' 400, 'GRAD' 0, 'opsz' 24;
}
.material-symbols-filled {
  font-variation-settings: 'FILL' 1, 'wght' 400, 'GRAD' 0, 'opsz' 24;
}

/* ----- Selection highlight ----- */
::selection { background-color: rgba(240, 153, 66, 0.3); }

/* ----- Hero section hero image ----- */
.hero-img-container {
  border-radius: 2.5rem;
  overflow: hidden;
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
  border: 8px solid rgba(255, 255, 255, 0.5);
}

/* ----- Feature cards ----- */
.feature-card {
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}
.feature-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 20px 40px -12px rgba(240, 153, 66, 0.2);
}
.feature-card:hover .feature-icon {
  transform: scale(1.1);
}
.feature-icon {
  transition: transform 0.3s ease;
}

/* ----- Screenshot cards ----- */
.screenshot-card {
  transition: transform 0.3s ease;
}
.screenshot-card:hover {
  transform: scale(1.02);
}

/* ----- Download buttons ----- */
.download-btn {
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.download-btn:hover {
  transform: translateY(-4px);
  box-shadow: 0 20px 40px -12px rgba(34, 25, 16, 0.4);
}

/* ----- Decorative blobs ----- */
.blob-primary {
  background: rgba(240, 153, 66, 0.1);
  border-radius: 9999px;
  filter: blur(48px);
}
.blob-tertiary {
  background: rgba(83, 214, 246, 0.08);
  border-radius: 9999px;
  filter: blur(48px);
}

/* ----- Section transitions ----- */
section {
  position: relative;
}

/* ----- Nav ----- */
.nav-cta {
  transition: opacity 0.2s ease, transform 0.1s ease;
}
.nav-cta:hover { opacity: 0.85; }
.nav-cta:active { transform: scale(0.95); }

/* ----- Responsive ----- */
@media (max-width: 640px) {
  .hero-tagline { font-size: 2.25rem; }
}