/* ============================================================
   STELLAR 2026 — Animations
   ============================================================ */

/* ── Twinkle Stars ── */
@keyframes twinkle {
  0%, 100% { opacity: 0.2; transform: scale(0.8); }
  50% { opacity: 1; transform: scale(1.2); }
}

@keyframes twinkle-alt {
  0%, 100% { opacity: 0.4; }
  50% { opacity: 0.8; }
}

/* ── Float / Bobbing ── */
@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-12px); }
}

@keyframes float-slow {
  0%, 100% { transform: translateY(0) rotate(0deg); }
  33% { transform: translateY(-8px) rotate(1deg); }
  66% { transform: translateY(-4px) rotate(-1deg); }
}

/* ── Fade In Variants ── */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}

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

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

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

/* ── Glow Pulse ── */
@keyframes glowPulse {
  0%, 100% {
    filter: drop-shadow(0 0 8px rgba(var(--accent-cyan-neon-rgb), 0.4))
            drop-shadow(0 0 20px rgba(var(--accent-cyan-neon-rgb), 0.2));
  }
  50% {
    filter: drop-shadow(0 0 16px rgba(var(--accent-cyan-neon-rgb), 0.7))
            drop-shadow(0 0 40px rgba(var(--accent-cyan-neon-rgb), 0.35));
  }
}

/* ── Spin Glow (loading) ── */
@keyframes spinGlow {
  0% { transform: rotate(0deg) scale(1); filter: brightness(1); }
  25% { transform: rotate(90deg) scale(1.05); filter: brightness(1.2); }
  50% { transform: rotate(180deg) scale(1); filter: brightness(1); }
  75% { transform: rotate(270deg) scale(1.05); filter: brightness(1.2); }
  100% { transform: rotate(360deg) scale(1); filter: brightness(1); }
}

@keyframes logoBreath {
  0%, 100% { transform: scale(1); opacity: 0.9; }
  50% { transform: scale(1.06); opacity: 1; }
}

/* ── Shooting Star ── */
@keyframes shootingStar {
  0% {
    transform: translateX(0) translateY(0) rotate(-45deg);
    opacity: 1;
  }
  70% { opacity: 1; }
  100% {
    transform: translateX(300px) translateY(300px) rotate(-45deg);
    opacity: 0;
  }
}

/* ── Slide In from Right (mobile menu) ── */
@keyframes slideInRight {
  from { transform: translateX(100%); }
  to { transform: translateX(0); }
}

@keyframes slideOutRight {
  from { transform: translateX(0); }
  to { transform: translateX(100%); }
}

/* ── Star Field (procedural background stars) ── */
.star-field {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: var(--z-stars);
  overflow: hidden;
}

.star {
  position: absolute;
  border-radius: 50%;
  background: var(--white);
}

.star--small {
  width: 2px;
  height: 2px;
  animation: twinkle 3s ease-in-out infinite;
}

.star--medium {
  width: 3px;
  height: 3px;
  animation: twinkle 4s ease-in-out infinite;
  box-shadow: 0 0 4px rgba(var(--white-rgb), 0.5);
}

.star--large {
  width: 4px;
  height: 4px;
  animation: twinkle 5s ease-in-out infinite;
  box-shadow: 0 0 6px rgba(var(--accent-cyan-neon-rgb), 0.5);
  background: var(--text-pill-cyan);
}

/* ── Sparkle (4-point star) ── */
.sparkle {
  position: absolute;
  pointer-events: none;
}

.sparkle::before,
.sparkle::after {
  content: '';
  position: absolute;
  background: var(--accent-cyan-neon);
}

.sparkle::before {
  width: 2px;
  height: 12px;
  left: 5px;
  top: 0;
  border-radius: 1px;
}

.sparkle::after {
  width: 12px;
  height: 2px;
  left: 0;
  top: 5px;
  border-radius: 1px;
}

/* ── Constellation Lines ── */
.constellation-line {
  position: absolute;
  border-top: 1.5px dashed rgba(var(--white-rgb), 0.15);
  pointer-events: none;
  transform-origin: left center;
}

/* ── Loading Screen ── */
.loading-screen {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--bg-twilight-dark);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  z-index: var(--z-loading);
  transition: opacity 0.6s ease, visibility 0.6s ease;
}

.loading-screen.hidden {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.loading-screen__logo {
  width: 120px;
  height: 120px;
  object-fit: contain;
  animation: logoBreath 2s ease-in-out infinite;
  filter: drop-shadow(0 0 20px rgba(var(--accent-cyan-neon-rgb), 0.6));
}

.loading-screen__text {
  margin-top: var(--space-lg);
  font-family: var(--font-display);
  font-size: var(--fs-h4);
  color: var(--text-title-cyan);
  text-shadow: 0 0 10px rgba(var(--accent-cyan-neon-rgb), 0.5);
  letter-spacing: 0.15em;
}

.loading-screen__dots {
  display: inline-flex;
  gap: 4px;
  margin-left: 4px;
}

.loading-screen__dots span {
  width: 6px;
  height: 6px;
  background: var(--accent-cyan-neon);
  border-radius: 50%;
  animation: twinkle 1.2s ease-in-out infinite;
}

.loading-screen__dots span:nth-child(2) { animation-delay: 0.2s; }
.loading-screen__dots span:nth-child(3) { animation-delay: 0.4s; }

/* ── Mascot Floating ── */
.mascot-float {
  animation: float 4s ease-in-out infinite;
}

.mascot-float-slow {
  animation: float-slow 6s ease-in-out infinite;
}