/* =========================================
   NBA Quizzes — Animations
   nba-animations.css
   ========================================= */

/* ── Keyframes ───────────────────────────── */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(36px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes fadeInDown {
  from { opacity: 0; transform: translateY(-24px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes fadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}
@keyframes slideInLeft {
  from { opacity: 0; transform: translateX(-40px); }
  to   { opacity: 1; transform: translateX(0); }
}
@keyframes slideInRight {
  from { opacity: 0; transform: translateX(40px); }
  to   { opacity: 1; transform: translateX(0); }
}
@keyframes scaleIn {
  from { opacity: 0; transform: scale(0.88); }
  to   { opacity: 1; transform: scale(1); }
}
@keyframes spin {
  from { transform: rotate(0deg); }
  to   { transform: rotate(360deg); }
}
@keyframes pulse {
  0%, 100% { transform: scale(1); opacity: 1; }
  50%       { transform: scale(1.06); opacity: 0.85; }
}
@keyframes bounce {
  0%, 100% { transform: translateY(0); }
  30%       { transform: translateY(-12px); }
  60%       { transform: translateY(-6px); }
}
@keyframes shimmer {
  0%   { background-position: -600px 0; }
  100% { background-position: 600px 0; }
}
@keyframes ballBounce {
  0%, 100% { transform: translateY(0) rotate(0deg); }
  25%       { transform: translateY(-30px) rotate(45deg); }
  50%       { transform: translateY(0) rotate(90deg); }
  75%       { transform: translateY(-15px) rotate(135deg); }
}
@keyframes gradientShift {
  0%   { background-position: 0% 50%; }
  50%  { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}
@keyframes ripple {
  0%   { transform: scale(0); opacity: 0.6; }
  100% { transform: scale(2.4); opacity: 0; }
}
@keyframes counterUp {
  from { opacity: 0; transform: translateY(20px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes lineGrow {
  from { width: 0; }
  to   { width: 100%; }
}
@keyframes floatBall {
  0%, 100% { transform: translateY(0) rotate(0deg); }
  50%       { transform: translateY(-20px) rotate(20deg); }
}

/* ── Scroll reveal classes ───────────────── */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.reveal.revealed {
  opacity: 1;
  transform: translateY(0);
}
.reveal-left {
  opacity: 0;
  transform: translateX(-30px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.reveal-left.revealed { opacity: 1; transform: translateX(0); }
.reveal-right {
  opacity: 0;
  transform: translateX(30px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.reveal-right.revealed { opacity: 1; transform: translateX(0); }
.reveal-scale {
  opacity: 0;
  transform: scale(0.9);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.reveal-scale.revealed { opacity: 1; transform: scale(1); }

/* Stagger delays */
.delay-1 { transition-delay: 0.1s; }
.delay-2 { transition-delay: 0.2s; }
.delay-3 { transition-delay: 0.3s; }
.delay-4 { transition-delay: 0.4s; }
.delay-5 { transition-delay: 0.5s; }
.delay-6 { transition-delay: 0.6s; }

/* ── Hero animations ─────────────────────── */
.hero-animate-1 { animation: fadeInUp 0.8s ease 0.1s both; }
.hero-animate-2 { animation: fadeInUp 0.8s ease 0.25s both; }
.hero-animate-3 { animation: fadeInUp 0.8s ease 0.4s both; }
.hero-animate-4 { animation: fadeInUp 0.8s ease 0.55s both; }
.hero-animate-5 { animation: fadeInUp 0.8s ease 0.7s both; }

/* ── Ball animation ──────────────────────── */
.ball-float { animation: floatBall 4s ease-in-out infinite; }
.ball-spin { animation: spin 12s linear infinite; }

/* ── Gradient animated background ───────── */
.animated-gradient {
  background: linear-gradient(-45deg, #0a0a0f, #1a1a2e, #16213e, #1D428A);
  background-size: 400% 400%;
  animation: gradientShift 12s ease infinite;
}

/* ── Loading shimmer ─────────────────────── */
.shimmer {
  background: linear-gradient(90deg,
    rgba(255,255,255,0.04) 0%,
    rgba(255,255,255,0.1) 50%,
    rgba(255,255,255,0.04) 100%);
  background-size: 600px 100%;
  animation: shimmer 1.5s infinite;
}

/* ── Quiz answer animations ──────────────── */
@keyframes correctPop {
  0%   { transform: scale(1); }
  40%  { transform: scale(1.05); }
  100% { transform: scale(1); }
}
@keyframes wrongShake {
  0%, 100% { transform: translateX(0); }
  20%       { transform: translateX(-6px); }
  40%       { transform: translateX(6px); }
  60%       { transform: translateX(-4px); }
  80%       { transform: translateX(4px); }
}
.anim-correct { animation: correctPop 0.4s ease; }
.anim-wrong   { animation: wrongShake 0.4s ease; }

/* ── Score reveal ────────────────────────── */
.score-reveal { animation: scaleIn 0.6s cubic-bezier(0.34, 1.56, 0.64, 1) both; }

/* ── Hover effects ───────────────────────── */
.hover-lift { transition: transform 0.3s ease, box-shadow 0.3s ease; }
.hover-lift:hover { transform: translateY(-6px); box-shadow: 0 12px 32px rgba(0,0,0,0.25); }
.hover-glow:hover { box-shadow: 0 0 30px rgba(242,101,34,0.3); }

/* ── Pulse dot ───────────────────────────── */
.pulse-dot {
  width: 8px; height: 8px;
  background: #2ecc71;
  border-radius: 50%;
  display: inline-block;
  animation: pulse 2s ease-in-out infinite;
}

/* ── Progress animation ──────────────────── */
.progress-animate {
  animation: lineGrow 1s ease forwards;
}

/* ── Page transitions ────────────────────── */
.page-enter {
  animation: fadeIn 0.4s ease both;
}