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

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

/* ===== Fade-in animations ===== */
.fade-in {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s ease-out, transform 0.7s ease-out;
}

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

/* Stagger children */
.fade-in:nth-child(2) { transition-delay: 0.08s; }
.fade-in:nth-child(3) { transition-delay: 0.16s; }
.fade-in:nth-child(4) { transition-delay: 0.24s; }
.fade-in:nth-child(5) { transition-delay: 0.32s; }
.fade-in:nth-child(6) { transition-delay: 0.40s; }

/* ===== Score gauge animation ===== */
@keyframes score-pulse {
  0%, 100% { filter: drop-shadow(0 0 6px currentColor); }
  50% { filter: drop-shadow(0 0 18px currentColor); }
}

#score-ring.animated {
  animation: score-pulse 2s ease-in-out infinite;
}

/* ===== Score counter ===== */
@keyframes count-up {
  from { opacity: 0.5; }
  to { opacity: 1; }
}

/* ===== Scanner shimmer effect ===== */
@keyframes shimmer {
  0% { background-position: -200% 0; }
  100% { background-position: 200% 0; }
}

.shimmer {
  background: linear-gradient(
    90deg,
    rgba(37, 99, 235, 0) 0%,
    rgba(37, 99, 235, 0.08) 50%,
    rgba(37, 99, 235, 0) 100%
  );
  background-size: 200% 100%;
  animation: shimmer 2s ease-in-out infinite;
}

/* ===== Details/FAQ styling ===== */
details summary {
  list-style: none;
}

details summary::-webkit-details-marker {
  display: none;
}

details[open] summary {
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  padding-bottom: 1.25rem;
  margin-bottom: 0;
}

details[open] > div {
  animation: faq-open 0.3s ease-out;
}

@keyframes faq-open {
  from {
    opacity: 0;
    transform: translateY(-8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ===== Stat counter animation ===== */
.stat-animate {
  animation: stat-pop 0.4s cubic-bezier(0.34, 1.56, 0.64, 1) forwards;
}

@keyframes stat-pop {
  from {
    transform: scale(0.5);
    opacity: 0;
  }
  to {
    transform: scale(1);
    opacity: 1;
  }
}

/* ===== Mobile menu transition ===== */
#mobile-menu {
  transition: max-height 0.3s ease-out, opacity 0.3s ease-out;
  max-height: 0;
  opacity: 0;
  overflow: hidden;
}

#mobile-menu.open {
  max-height: 300px;
  opacity: 1;
}

/* ===== Selection color ===== */
::selection {
  background: rgba(37, 99, 235, 0.3);
  color: white;
}

/* ===== Focus styles ===== */
input:focus,
button:focus-visible {
  outline: 2px solid rgba(37, 99, 235, 0.5);
  outline-offset: 2px;
}

/* ===== Scrollbar (subtle) ===== */
::-webkit-scrollbar {
  width: 6px;
}

::-webkit-scrollbar-track {
  background: #0B1426;
}

::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.1);
  border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
  background: rgba(255, 255, 255, 0.2);
}