/* ============================================================
   animations.css — CSS-Only Animations & Transitions
   The Beauty Lounge
   ============================================================ */

/* ── Skeleton Loading Pulse ─────────────────────────────── */
@keyframes skeleton-pulse {
  0%, 100% {
    opacity: 0.5;
  }
  50% {
    opacity: 0.8;
  }
}

.skeleton {
  position: relative;
  overflow: hidden;
  background: linear-gradient(
    135deg,
    var(--color-accent) 0%,
    var(--color-accent-light) 50%,
    var(--color-accent) 100%
  );
  background-size: 200% 200%;
  animation: skeleton-pulse 3s ease-in-out infinite;
  border-radius: var(--radius-md);
}

.skeleton::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(
    90deg,
    transparent 0%,
    rgba(244, 241, 236, 0.08) 50%,
    transparent 100%
  );
  background-size: 200% 100%;
  animation: skeleton-shimmer 3.8s ease-in-out infinite;
}

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

/* ── Reveal defaults (hidden until GSAP triggers) ───────── */
.reveal {
  opacity: 0;
  transform: translateY(30px);
}

.reveal-left {
  opacity: 0;
  transform: translateX(-30px);
}

.reveal-right {
  opacity: 0;
  transform: translateX(30px);
}

.reveal-scale {
  opacity: 0;
  transform: scale(0.95);
}

/* ── Hover transitions ──────────────────────────────────── */
.hover-scale {
  transition: transform var(--duration-normal) var(--ease-out);
}

.hover-scale:hover {
  transform: scale(1.03);
}

.hover-lift {
  transition: transform var(--duration-normal) var(--ease-out),
              box-shadow var(--duration-normal) var(--ease-out);
}

.hover-lift:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

/* ── Image placeholder textures ─────────────────────────── */
.placeholder-img {
  position: relative;
  overflow: hidden;
  background: linear-gradient(
    145deg,
    var(--color-accent) 0%,
    var(--color-accent-light) 40%,
    var(--color-accent-dark) 100%
  );
}

.placeholder-img::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.04'/%3E%3C/svg%3E");
  background-size: 256px 256px;
  opacity: 0.5;
  mix-blend-mode: overlay;
}

/* ── Lightbox backdrop ──────────────────────────────────── */
@keyframes backdrop-in {
  from {
    backdrop-filter: blur(0);
    background-color: transparent;
  }
  to {
    backdrop-filter: blur(16px);
    background-color: rgba(28, 51, 47, 0.85);
  }
}

/* ── Nav underline draw ─────────────────────────────────── */
.nav-link-underline {
  position: relative;
  display: inline-block;
}

.nav-link-underline::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 100%;
  height: 1px;
  background-color: currentColor;
  transform: scaleX(0);
  transform-origin: right;
  transition: transform var(--duration-fast) var(--ease-out);
}

.nav-link-underline:hover::after {
  transform: scaleX(1);
  transform-origin: left;
}

/* ── Form input underline ───────────────────────────────── */
.form-field-line {
  position: relative;
}

.form-field-line::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background-color: var(--color-accent);
  transform: scaleX(0);
  transform-origin: center;
  transition: transform var(--duration-fast) var(--ease-out);
}

.form-field-line:focus-within::after {
  transform: scaleX(1);
}

/* ── Hamburger to X morph ───────────────────────────────── */
.hamburger-line {
  transition: transform var(--duration-fast) var(--ease-out),
              opacity var(--duration-fast) var(--ease-out);
}

.nav-open .hamburger-line:nth-child(1) {
  transform: translateY(8px) rotate(45deg);
}

.nav-open .hamburger-line:nth-child(2) {
  opacity: 0;
}

.nav-open .hamburger-line:nth-child(3) {
  transform: translateY(-8px) rotate(-45deg);
}

/* ── Success checkmark draw ─────────────────────────────── */
@keyframes checkmark-draw {
  0% {
    stroke-dashoffset: 48;
  }
  100% {
    stroke-dashoffset: 0;
  }
}

.checkmark-path {
  stroke-dasharray: 48;
  stroke-dashoffset: 48;
  animation: checkmark-draw 1s var(--ease-out) forwards;
}