/* ================================================================
   OBIETTIVO OTTICA — Animations
   Scroll-reveal, hover transitions, page load
   ================================================================ */

/* ================================================================
   SCROLL REVEAL
   Applied via IntersectionObserver in main.js
   ================================================================ */

.reveal {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 600ms cubic-bezier(0, 0, 0.2, 1),
              transform 600ms cubic-bezier(0, 0, 0.2, 1);
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Stagger delays */
.reveal-delay-1 { transition-delay: 80ms; }
.reveal-delay-2 { transition-delay: 160ms; }
.reveal-delay-3 { transition-delay: 240ms; }
.reveal-delay-4 { transition-delay: 320ms; }
.reveal-delay-5 { transition-delay: 400ms; }
.reveal-delay-6 { transition-delay: 480ms; }

/* Horizontal reveal (from left) */
.reveal-left {
  opacity: 0;
  transform: translateX(-20px);
  transition: opacity 600ms cubic-bezier(0, 0, 0.2, 1),
              transform 600ms cubic-bezier(0, 0, 0.2, 1);
}
.reveal-left.visible {
  opacity: 1;
  transform: translateX(0);
}

/* Scale reveal */
.reveal-scale {
  opacity: 0;
  transform: scale(0.96);
  transition: opacity 500ms cubic-bezier(0, 0, 0.2, 1),
              transform 500ms cubic-bezier(0, 0, 0.2, 1);
}
.reveal-scale.visible {
  opacity: 1;
  transform: scale(1);
}

/* ================================================================
   PAGE LOAD — Hero elements
   ================================================================ */

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(16px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}

@keyframes slideRight {
  from { transform: scaleX(0); }
  to   { transform: scaleX(1); }
}

.hero__eyebrow { animation: fadeIn 500ms 50ms both; }
.hero__headline { animation: fadeUp 650ms 100ms cubic-bezier(0, 0, 0.2, 1) both; }
.hero__sub      { animation: fadeUp 600ms 200ms cubic-bezier(0, 0, 0.2, 1) both; }
.hero__actions  { animation: fadeUp 550ms 300ms cubic-bezier(0, 0, 0.2, 1) both; }
.hero__stats    { animation: fadeUp 500ms 420ms cubic-bezier(0, 0, 0.2, 1) both; }
.hero__visual   { animation: fadeIn 800ms 150ms cubic-bezier(0, 0, 0.2, 1) both; }

/* ================================================================
   COUNTER ANIMATION (JS-triggered)
   ================================================================ */

.counter {
  display: inline-block;
  transition: all var(--t-base);
}

/* ================================================================
   PULSE on accent elements
   ================================================================ */

@keyframes accentPulse {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0.55; }
}

/* ================================================================
   UNDERLINE EXPAND (used on nav links)
   ================================================================ */

@keyframes expandLine {
  from { transform: scaleX(0); }
  to   { transform: scaleX(1); }
}

/* ================================================================
   CARD STAGGER on category/product grids
   ================================================================ */

.grid-stagger > *:nth-child(1) { transition-delay: 0ms; }
.grid-stagger > *:nth-child(2) { transition-delay: 60ms; }
.grid-stagger > *:nth-child(3) { transition-delay: 120ms; }
.grid-stagger > *:nth-child(4) { transition-delay: 180ms; }
.grid-stagger > *:nth-child(5) { transition-delay: 240ms; }
.grid-stagger > *:nth-child(6) { transition-delay: 300ms; }
.grid-stagger > *:nth-child(7) { transition-delay: 360ms; }
.grid-stagger > *:nth-child(8) { transition-delay: 420ms; }

/* ================================================================
   BUTTON STATES
   ================================================================ */

.btn {
  position: relative;
  overflow: hidden;
}

.btn::after {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(255,255,255,0.12);
  opacity: 0;
  transition: opacity 200ms;
}
.btn:active::after { opacity: 1; }

/* ================================================================
   LOADING STATE for form submit
   ================================================================ */

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

.btn-loading {
  position: relative;
  pointer-events: none;
  opacity: 0.75;
}

.btn-loading::before {
  content: '';
  position: absolute;
  width: 14px; height: 14px;
  border: 2px solid rgba(255,255,255,0.3);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin 600ms linear infinite;
  left: 50%; top: 50%;
  transform: translate(-50%, -50%);
}

.btn-loading span { opacity: 0; }

/* ================================================================
   SUCCESS STATE (form sent)
   ================================================================ */

@keyframes checkIn {
  from { transform: scale(0.5) rotate(-10deg); opacity: 0; }
  to   { transform: scale(1) rotate(0); opacity: 1; }
}

.form-success {
  animation: fadeIn 400ms ease both;
}

.form-success__icon {
  animation: checkIn 500ms 100ms cubic-bezier(0.34, 1.56, 0.64, 1) both;
}

/* ================================================================
   IMAGE LAZY LOAD
   ================================================================ */

img.lazy {
  opacity: 0;
  transition: opacity 400ms ease;
}

img.lazy.loaded {
  opacity: 1;
}