/* ==========================================================================
   FIBER GROUP - Animations System
   ========================================================================== */

/* ============================================================
   KEYFRAMES
   ============================================================ */

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

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

@keyframes fadeLeftIn {
  from { opacity: 0; transform: translateX(-16px); }
  to   { opacity: 1; transform: translateX(0); }
}

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

@keyframes zoomIn {
  from { opacity: 0; transform: scale(0.97); }
  to   { opacity: 1; transform: scale(1); }
}

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

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0.5; }
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50%       { transform: translateY(-8px); }
}

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

/* ============================================================
   SCROLL REVEAL SYSTEM
   data-reveal="fade-up | fade-left | fade-right | zoom | fade"
   data-reveal-delay="100 | 200 | 300 ..."
   ============================================================ */

[data-reveal] {
  opacity: 0;
  transition:
    opacity var(--t-slower) var(--ease-out),
    transform var(--t-slower) var(--ease-out);
}

[data-reveal="fade-up"]    { transform: translateY(20px); }
[data-reveal="fade-left"]  { transform: translateX(-20px); }
[data-reveal="fade-right"] { transform: translateX(20px); }
[data-reveal="zoom"]       { transform: scale(0.97); }
[data-reveal="fade"]       { transform: none; }

[data-reveal].revealed {
  opacity: 1;
  transform: none !important;
}

/* Stagger delays */
[data-reveal-delay="100"] { transition-delay: 100ms; }
[data-reveal-delay="150"] { transition-delay: 150ms; }
[data-reveal-delay="200"] { transition-delay: 200ms; }
[data-reveal-delay="300"] { transition-delay: 300ms; }
[data-reveal-delay="400"] { transition-delay: 400ms; }
[data-reveal-delay="500"] { transition-delay: 500ms; }
[data-reveal-delay="600"] { transition-delay: 600ms; }
[data-reveal-delay="700"] { transition-delay: 700ms; }
[data-reveal-delay="800"] { transition-delay: 800ms; }

/* ============================================================
   HERO REVEAL (load animations)
   ============================================================ */

.hero-reveal {
  animation: fadeUpIn 0.9s var(--ease-out) both;
}

.hero-reveal--1 { animation-delay: 0.1s; }
.hero-reveal--2 { animation-delay: 0.28s; }
.hero-reveal--3 { animation-delay: 0.44s; }
.hero-reveal--4 { animation-delay: 0.60s; }

/* ============================================================
   COUNTER ANIMATION
   ============================================================ */

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

/* ============================================================
   LOADING/SKELETON
   ============================================================ */

.skeleton {
  background: linear-gradient(
    90deg,
    var(--color-surface-2) 25%,
    var(--color-border-light) 50%,
    var(--color-surface-2) 75%
  );
  background-size: 200% 100%;
  animation: shimmer 1.6s infinite linear;
  border-radius: var(--radius-md);
}

/* ============================================================
   FLOATING ELEMENT
   ============================================================ */

.float-anim {
  animation: float 4s ease-in-out infinite;
}

/* ============================================================
   SECTION SEPARATOR / DECORATIVE LINE
   ============================================================ */

.accent-line {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  margin-bottom: var(--sp-6);
}

.accent-line__bar {
  width: 40px;
  height: 3px;
  background: var(--color-accent);
  border-radius: var(--radius-full);
  flex-shrink: 0;
}

.accent-line__bar--short {
  width: 16px;
  opacity: 0.4;
}

/* ============================================================
   SCROLL INDICATOR (Hero)
   ============================================================ */

.scroll-indicator {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--sp-2);
  color: rgba(255,255,255,0.5);
  font-size: var(--text-xs);
  letter-spacing: var(--ls-widest);
  text-transform: uppercase;
  cursor: pointer;
  animation: float 3s ease-in-out infinite;
}

.scroll-indicator__line {
  width: 1px;
  height: 32px;
  background: linear-gradient(180deg, rgba(255,255,255,0.6), rgba(255,255,255,0));
}

/* ============================================================
   HOVER LIFT UTILITY
   ============================================================ */

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

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

/* ============================================================
   INNER PAGES - SECTION TRANSITIONS
   ============================================================ */

.section-transition {
  opacity: 0;
  transform: translateY(16px);
  transition:
    opacity var(--t-slower) var(--ease-out),
    transform var(--t-slower) var(--ease-out);
}

.section-transition.visible {
  opacity: 1;
  transform: none;
}

/* ============================================================
   PROGRESS / LOADING BAR (page top)
   ============================================================ */

.page-progress {
  position: fixed;
  top: 0; left: 0;
  height: 2px;
  width: 0%;
  background: linear-gradient(90deg, var(--color-accent), var(--color-accent-light));
  z-index: calc(var(--z-toast) + 1);
  transition: width 0.1s linear;
}