/* ============================================ */
/* Base & Smooth Scroll                         */
/* ============================================ */
html {
  scroll-behavior: smooth;
}

body {
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ============================================ */
/* Load Animations (hero + floating button)     */
/* ============================================ */
.animate-on-load {
  opacity: 0;
  transform: translateY(20px);
  animation: fadeSlideUp 0.8s ease-out forwards;
  animation-delay: var(--delay, 0s);
}

@keyframes fadeSlideUp {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ============================================ */
/* Scroll-triggered fade-up animations          */
/* ============================================ */
.fade-up {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease-out, transform 0.6s ease-out;
  transition-delay: var(--delay, 0s);
}

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

/* ============================================ */
/* Bouncing scroll indicator arrow              */
/* ============================================ */
.scroll-bounce {
  animation: bounce 2s ease-in-out infinite;
}

@keyframes bounce {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(8px); }
}

/* ============================================ */
/* Form submit loading spinner                  */
/* ============================================ */
.spinner {
  display: inline-block;
  width: 20px;
  height: 20px;
  border: 2px solid rgba(255,255,255,0.3);
  border-radius: 50%;
  border-top-color: white;
  animation: spin 0.6s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}