/* ============================================================
   DOTA PATCH ANALYZER — Animations CSS
   Scroll reveal, entrance effects, transitions
   ============================================================ */

/* ── Reveal on scroll ───────────────────────────────────── */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

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

/* Staggered children */
.reveal-stagger > * {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}

.reveal-stagger.visible > *:nth-child(1)  { transition-delay: 0.05s; opacity: 1; transform: none; }
.reveal-stagger.visible > *:nth-child(2)  { transition-delay: 0.10s; opacity: 1; transform: none; }
.reveal-stagger.visible > *:nth-child(3)  { transition-delay: 0.15s; opacity: 1; transform: none; }
.reveal-stagger.visible > *:nth-child(4)  { transition-delay: 0.20s; opacity: 1; transform: none; }
.reveal-stagger.visible > *:nth-child(5)  { transition-delay: 0.25s; opacity: 1; transform: none; }
.reveal-stagger.visible > *:nth-child(6)  { transition-delay: 0.30s; opacity: 1; transform: none; }
.reveal-stagger.visible > *:nth-child(7)  { transition-delay: 0.35s; opacity: 1; transform: none; }
.reveal-stagger.visible > *:nth-child(8)  { transition-delay: 0.40s; opacity: 1; transform: none; }
.reveal-stagger.visible > *:nth-child(9)  { transition-delay: 0.45s; opacity: 1; transform: none; }
.reveal-stagger.visible > *:nth-child(10) { transition-delay: 0.50s; opacity: 1; transform: none; }

/* Fade in only */
.reveal-fade {
  opacity: 0;
  transition: opacity 0.8s ease;
}
.reveal-fade.visible { opacity: 1; }

/* Slide from left */
.reveal-left {
  opacity: 0;
  transform: translateX(-40px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.reveal-left.visible { opacity: 1; transform: translateX(0); }

/* Slide from right */
.reveal-right {
  opacity: 0;
  transform: translateX(40px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.reveal-right.visible { opacity: 1; transform: translateX(0); }

/* Scale in */
.reveal-scale {
  opacity: 0;
  transform: scale(0.9);
  transition: opacity 0.5s ease, transform 0.5s ease;
}
.reveal-scale.visible { opacity: 1; transform: scale(1); }

/* ── Hero cards entrance ─────────────────────��──────────── */
.hero-card {
  animation: fadeUp 0.5s ease both;
}

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

/* ── Item cards entrance ────────────────────────────────── */
.item-card {
  animation: fadeUp 0.4s ease both;
}

/* ── Gold shimmer on headings ───────────────────────────── */
@keyframes goldShimmer {
  0%   { background-position: -200% center; }
  100% { background-position: 200% center; }
}

.shimmer-gold {
  background: linear-gradient(
    90deg,
    var(--color-gold-dark) 0%,
    var(--color-gold-light) 40%,
    var(--color-gold) 50%,
    var(--color-gold-light) 60%,
    var(--color-gold-dark) 100%
  );
  background-size: 200% auto;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: goldShimmer 4s linear infinite;
}

/* ── Pulse glow ─────────────────────────────────────────── */
@keyframes pulseGlow {
  0%, 100% { box-shadow: 0 0 8px rgba(200, 155, 60, 0.3); }
  50%       { box-shadow: 0 0 20px rgba(200, 155, 60, 0.7); }
}

.pulse-glow { animation: pulseGlow 2.5s ease-in-out infinite; }

/* ── Navbar scroll effect ───────────────────────────────── */
.navbar.scrolled {
  background-color: rgba(13, 17, 23, 0.98);
  box-shadow: 0 2px 20px rgba(0, 0, 0, 0.8);
}

/* ── Patch timeline node pop ────────────────────────────── */
@keyframes nodePop {
  0%   { transform: scale(1); }
  50%  { transform: scale(1.04); }
  100% { transform: scale(1); }
}

.patch-timeline-node.active {
  animation: nodePop 0.3s ease;
}

/* ── Modal backdrop blur in ─────────────────────────────── */
@keyframes backdropIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}

.modal__backdrop { animation: backdropIn 0.25s ease; }

/* ── Stat bar fill animation ────────────────────────────── */
@keyframes fillBar {
  from { width: 0; }
}

.stat-bar__fill { animation: fillBar 0.8s ease; }

/* ── Section header line draw ───────────────────────────── */
@keyframes drawLine {
  from { width: 0; opacity: 0; }
  to   { width: 80px; opacity: 1; }
}

.section-header__divider.visible {
  animation: drawLine 0.6s ease;
}

/* ── Badge pop on load ──────────────────────────────────── */
@keyframes badgePop {
  0%   { transform: scale(0.8); opacity: 0; }
  70%  { transform: scale(1.05); }
  100% { transform: scale(1); opacity: 1; }
}

.badge { animation: badgePop 0.3s ease both; }

/* ── Page transition ────────────────────────────────────── */
body { animation: pageIn 0.4s ease; }

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

/* ── Floating action hint ───────────────────────────────── */
@keyframes floatHint {
  0%, 100% { transform: translateY(0); }
  50%       { transform: translateY(-8px); }
}

/* ── Card hover shimmer border ──────────────────────────── */
@keyframes borderPulse {
  0%, 100% { border-color: var(--color-gold-dark); }
  50%       { border-color: var(--color-gold); }
}

/* ── Number count-up (applied via JS) ──────────────────── */
.count-up { transition: opacity 0.3s ease; }

/* ── Loading skeleton ───────────────────────────────────── */
@keyframes skeleton {
  0%   { background-position: -400px 0; }
  100% { background-position: 400px 0; }
}

.skeleton {
  background: linear-gradient(
    90deg,
    var(--color-bg-surface) 25%,
    var(--color-bg-elevated) 50%,
    var(--color-bg-surface) 75%
  );
  background-size: 800px 100%;
  animation: skeleton 1.5s infinite;
  border-radius: var(--radius-md);
}

/* ── Chart canvas fade in ───────────────────────────────── */
canvas { animation: fadeUp 0.6s ease; }

/* ── Hover underline slide ──────────────────────────────── */
.hover-underline {
  position: relative;
}

.hover-underline::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: -2px;
  width: 0;
  height: 2px;
  background: var(--color-gold);
  transition: width var(--transition-base);
}

.hover-underline:hover::after { width: 100%; }