/* ═══════════════════════════════════════════════════════════
   FARMELIO — ANIMATIONS
   Smooth, purposeful motion that enhances not distracts.
═══════════════════════════════════════════════════════════ */

/* ── KEYFRAMES ─────────────────────────────────────────────── */
@keyframes orbFloat {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33%       { transform: translate(30px, -20px) scale(1.05); }
  66%       { transform: translate(-20px, 15px) scale(0.97); }
}

@keyframes orbPulse {
  0%, 100% { opacity: .6; transform: translate(-50%, -50%) scale(1); }
  50%       { opacity: 1; transform: translate(-50%, -50%) scale(1.15); }
}

@keyframes blink {
  0%, 100% { opacity: 1; box-shadow: 0 0 8px #4ade80; }
  50%       { opacity: .4; box-shadow: 0 0 4px #4ade80; }
}

@keyframes floatY {
  0%, 100% { transform: translateY(0); }
  50%       { transform: translateY(-10px); }
}

@keyframes scrollPulse {
  0%, 100% { opacity: .3; transform: scaleY(1); }
  50%       { opacity: .8; transform: scaleY(0.8); }
}

@keyframes marqueeScroll {
  from { transform: translateX(0); }
  to   { transform: translateX(-50%); }
}

@keyframes rotateSlow {
  from { transform: rotate(0deg); }
  to   { transform: rotate(360deg); }
}

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(24px); }
  to   { opacity: 1; transform: translateY(0); }
}

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

@keyframes fadeInLeft {
  from { opacity: 0; transform: translateX(-32px); }
  to   { opacity: 1; transform: translateX(0); }
}

@keyframes fadeInRight {
  from { opacity: 0; transform: translateX(32px); }
  to   { opacity: 1; transform: translateX(0); }
}

@keyframes scaleIn {
  from { opacity: 0; transform: scale(0.9); }
  to   { opacity: 1; transform: scale(1); }
}

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

@keyframes cardHover {
  from { transform: translateY(0) rotate(var(--base-rotate, 0deg)); }
  to   { transform: translateY(-6px) rotate(var(--base-rotate, 0deg)); }
}

@keyframes counterUp {
  from { opacity: 0; transform: translateY(20px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ── SCROLL REVEAL BASE STATES ──────────────────────────────── */
/* Elements start invisible, JS adds .is-visible */

.reveal-up,
.reveal-left,
.reveal-right,
.reveal-fade {
  opacity: 0;
  will-change: opacity, transform;
  transition:
    opacity 0.7s cubic-bezier(0.16, 1, 0.3, 1),
    transform 0.7s cubic-bezier(0.16, 1, 0.3, 1);
}

.reveal-up    { transform: translateY(32px); }
.reveal-left  { transform: translateX(-40px); }
.reveal-right { transform: translateX(40px); }
.reveal-fade  { transform: scale(0.95); }

.reveal-up.is-visible,
.reveal-left.is-visible,
.reveal-right.is-visible,
.reveal-fade.is-visible {
  opacity: 1;
  transform: none;
}

/* Stagger delays */
.delay-0 { transition-delay: 0ms; }
.delay-1 { transition-delay: 100ms; }
.delay-2 { transition-delay: 200ms; }
.delay-3 { transition-delay: 320ms; }
.delay-4 { transition-delay: 460ms; }

/* ── HERO CARD HOVER INTERACTIONS ───────────────────────────── */
.hero__card--front:hover {
  transform: translateY(-8px) scale(1.02);
  box-shadow: 0 30px 80px rgba(0,0,0,.5), 0 0 40px rgba(22,163,74,.3);
}

.hero__card--mid:hover {
  transform: rotate(5deg) translateY(-4px);
  opacity: .85;
}

/* ── PRODUCT CARD HOVER ──────────────────────────────────────── */
.product-card::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: linear-gradient(135deg, rgba(22,163,74,.04) 0%, transparent 60%);
  opacity: 0;
  transition: opacity 0.3s ease;
  pointer-events: none;
}

.product-card {
  position: relative;
}

.product-card:hover::before {
  opacity: 1;
}

/* ── NAV LINK UNDERLINE EFFECT ──────────────────────────────── */
.nav__link {
  position: relative;
}

.nav__link::after {
  content: '';
  position: absolute;
  bottom: 4px;
  left: var(--space-4);
  right: var(--space-4);
  height: 1.5px;
  background: currentColor;
  border-radius: 1px;
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

.nav__link:hover::after {
  transform: scaleX(1);
  transform-origin: left;
}

/* ── BUTTON RIPPLE EFFECT ──────────────────────────────────────── */
.btn {
  position: relative;
  overflow: hidden;
}

.btn::after {
  content: '';
  position: absolute;
  inset: -50%;
  background: radial-gradient(circle, rgba(255,255,255,.25) 0%, transparent 60%);
  opacity: 0;
  transform: scale(0.3);
  transition: opacity 0.4s ease, transform 0.4s ease;
  pointer-events: none;
}

.btn:active::after {
  opacity: 1;
  transform: scale(1);
  transition-duration: 0.1s;
}

/* ── CATEGORY BUTTON ACTIVE INDICATOR ──────────────────────── */
.category-btn {
  position: relative;
}

.category-btn.active::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 50%;
  transform: translateX(-50%);
  width: 20px; height: 3px;
  background: rgba(255,255,255,.6);
  border-radius: 2px;
}

/* ── STEP NUMBER HIGHLIGHT ───────────────────────────────────── */
.step:hover .step__num {
  color: var(--green-400);
  text-shadow: 0 0 16px rgba(74,222,128,.5);
  transition: all 0.2s ease;
}

.step:hover .step__icon {
  animation-play-state: paused;
  transform: scale(1.15) translateY(-4px);
  transition: transform 0.3s var(--ease-out);
}

/* ── FORM INPUT FOCUS LABEL ──────────────────────────────────── */
.form-group {
  position: relative;
}

.form-group input:focus + label,
.form-group textarea:focus + label {
  color: var(--green-700);
}

/* ── ABOUT STAT COUNTER ANIMATION ───────────────────────────── */
.about__stat.is-visible .about__stat-num {
  animation: counterUp 0.6s var(--ease-out) both;
}

/* ── SUSTAINABILITY CIRCLE SPIN ─────────────────────────────── */
.sustain__circle.is-visible::before {
  animation: rotateSlow 8s linear infinite;
}

/* ── MARQUEE HOVER PAUSE ────────────────────────────────────── */
.marquee-strip:hover .marquee-track {
  animation-play-state: paused;
}

/* ── LOADING SHIMMER FOR ELEMENTS ───────────────────────────── */
.skeleton {
  background: linear-gradient(90deg, var(--stone-100) 0%, var(--stone-200) 50%, var(--stone-100) 100%);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  border-radius: var(--r-md);
}

/* ── SMOOTH PAGE LOAD ────────────────────────────────────────── */
body {
  animation: fadeIn 0.4s ease both;
}

/* Disable animations for users who prefer reduced motion */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  .marquee-track {
    animation: none;
  }

  .reveal-up,
  .reveal-left,
  .reveal-right,
  .reveal-fade {
    opacity: 1;
    transform: none;
  }
}