/* =========================================================
   Aspen Dental Care — Shared Design System
   Layered on top of Tailwind (CDN) for animation + polish
   ========================================================= */

:root {
  --brand-dark: #251f57; /* deep indigo derived from logo purple */
  --brand-primary: #0b9837; /* Aspen logo green */
  --brand-purple: #38308a; /* Aspen logo purple */
  --brand-accent: #c79a2e; /* warm gold accent */
  --brand-warm: #faf9f5;
  --brand-muted: #6b7280;
}

html {
  scroll-behavior: smooth;
}

/* Respect users who prefer reduced motion */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
}

/* ---------- Custom scrollbar ---------- */
::-webkit-scrollbar {
  width: 10px;
}
::-webkit-scrollbar-track {
  background: var(--brand-warm);
}
::-webkit-scrollbar-thumb {
  background: var(--brand-primary);
  border-radius: 999px;
  border: 2px solid var(--brand-warm);
}
::-webkit-scrollbar-thumb:hover {
  background: var(--brand-dark);
}

/* =========================================================
   Scroll-reveal animation system
   Elements with .reveal fade/slide in when scrolled into view
   ========================================================= */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition:
    opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1),
    transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
  will-change: opacity, transform;
}
.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}
.reveal-left {
  transform: translateX(-40px);
}
.reveal-right {
  transform: translateX(40px);
}
.reveal-left.is-visible,
.reveal-right.is-visible {
  transform: translateX(0);
}
.reveal-scale {
  transform: scale(0.94);
}
.reveal-scale.is-visible {
  transform: scale(1);
}
/* Stagger helpers */
.reveal[data-delay="1"] {
  transition-delay: 0.08s;
}
.reveal[data-delay="2"] {
  transition-delay: 0.16s;
}
.reveal[data-delay="3"] {
  transition-delay: 0.24s;
}
.reveal[data-delay="4"] {
  transition-delay: 0.32s;
}
.reveal[data-delay="5"] {
  transition-delay: 0.4s;
}

/* =========================================================
   Keyframe utilities
   ========================================================= */
@keyframes floaty {
  0%,
  100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-14px);
  }
}
.animate-floaty {
  animation: floaty 6s ease-in-out infinite;
}
.animate-floaty-slow {
  animation: floaty 9s ease-in-out infinite;
}

@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(24px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}
.animate-fade-up {
  animation: fadeUp 1s cubic-bezier(0.16, 1, 0.3, 1) both;
}
.delay-100 {
  animation-delay: 0.1s;
}
.delay-200 {
  animation-delay: 0.2s;
}
.delay-300 {
  animation-delay: 0.3s;
}
.delay-400 {
  animation-delay: 0.4s;
}
.delay-500 {
  animation-delay: 0.5s;
}

@keyframes drawLine {
  from {
    width: 0;
  }
  to {
    width: 3rem;
  }
}

@keyframes shimmer {
  0% {
    background-position: -200% 0;
  }
  100% {
    background-position: 200% 0;
  }
}

/* Gradient text shimmer for hero accents */
.text-shimmer {
  background: linear-gradient(
    90deg,
    var(--brand-primary) 0%,
    var(--brand-purple) 50%,
    var(--brand-primary) 100%
  );
  background-size: 200% auto;
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: shimmer 6s linear infinite;
}

/* =========================================================
   Component polish
   ========================================================= */

/* Underline grow effect for nav links */
.nav-link {
  position: relative;
}
.nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -4px;
  height: 1.5px;
  width: 0;
  background: var(--brand-primary);
  transition: width 0.35s cubic-bezier(0.16, 1, 0.3, 1);
}
.nav-link:hover::after,
.nav-link.active::after {
  width: 100%;
}
.nav-link.active {
  color: var(--brand-primary);
}

/* Card lift */
.card-lift {
  transition:
    transform 0.4s cubic-bezier(0.16, 1, 0.3, 1),
    box-shadow 0.4s cubic-bezier(0.16, 1, 0.3, 1),
    border-color 0.4s ease;
}
.card-lift:hover {
  transform: translateY(-6px);
  box-shadow: 0 24px 48px -20px rgba(11, 43, 38, 0.28);
}

/* Button sheen */
.btn-sheen {
  position: relative;
  overflow: hidden;
}
.btn-sheen::before {
  content: "";
  position: absolute;
  top: 0;
  left: -120%;
  width: 60%;
  height: 100%;
  background: linear-gradient(
    120deg,
    transparent,
    rgba(255, 255, 255, 0.25),
    transparent
  );
  transform: skewX(-20deg);
  transition: left 0.7s ease;
}
.btn-sheen:hover::before {
  left: 140%;
}

/* Image treatment with graceful gradient fallback baked behind */
.img-frame {
  position: relative;
  overflow: hidden;
  background: linear-gradient(135deg, var(--brand-primary), var(--brand-dark));
}
.img-frame img {
  transition: transform 0.9s cubic-bezier(0.16, 1, 0.3, 1);
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.img-frame:hover img {
  transform: scale(1.06);
}

/* Brand gradient for large hero / CTA panels — mirrors the logo's green→purple */
.bg-brand-gradient {
  background-image: linear-gradient(
    135deg,
    var(--brand-primary) 0%,
    #1f7f4a 38%,
    var(--brand-purple) 100%
  );
}

/* Decorative dotted grid */
.dot-grid {
  background-image: radial-gradient(
    rgba(27, 77, 69, 0.18) 1px,
    transparent 1px
  );
  background-size: 22px 22px;
}

/* Mobile menu transition */
#mobile-menu {
  transition:
    opacity 0.3s ease,
    transform 0.35s cubic-bezier(0.16, 1, 0.3, 1);
}
#mobile-menu.closed {
  opacity: 0;
  transform: translateY(-8px);
  pointer-events: none;
}

/* Accordion (FAQ) */
.accordion-body {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.45s cubic-bezier(0.16, 1, 0.3, 1);
}
.accordion-item.open .accordion-body {
  max-height: 320px;
}
.accordion-item.open .accordion-icon {
  transform: rotate(45deg);
}
.accordion-icon {
  transition: transform 0.35s ease;
}

/* Progress bar (reading / scroll indicator) */
#scroll-progress {
  transform-origin: left;
  transform: scaleX(0);
  transition: transform 0.1s linear;
}

/* Counter number tabular alignment */
.tabular {
  font-variant-numeric: tabular-nums;
}