/* ============================================================
   ANIMATIONS.CSS — Keyframes & Motion
   Jefe de la M — Beat Maker Website
   ============================================================ */

/* ── Keyframes ────────────────────────────────────────────── */

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

@keyframes scrollBounce {
  0%, 100% { transform: translateY(0); }
  50%       { transform: translateY(6px); }
}

@keyframes pulse-ring {
  0%   { box-shadow: 0 0 0 0 rgba(var(--accent-rgb), 0.5); }
  70%  { box-shadow: 0 0 0 14px rgba(var(--accent-rgb), 0); }
  100% { box-shadow: 0 0 0 0 rgba(var(--accent-rgb), 0); }
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

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

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

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

@keyframes scaleIn {
  from { opacity: 0; transform: scale(0.92); }
  to   { opacity: 1; transform: scale(1); }
}

@keyframes clipReveal {
  from { clip-path: inset(0 0 100% 0); transform: translateY(20px); }
  to   { clip-path: inset(0 0 0% 0);   transform: translateY(0); }
}

@keyframes waveformLoop {
  0%  { height: 30%; }
  20% { height: 80%; }
  40% { height: 45%; }
  60% { height: 90%; }
  80% { height: 55%; }
  100%{ height: 30%; }
}

@keyframes glowPulse {
  0%, 100% { opacity: 0.15; }
  50%       { opacity: 0.28; }
}

/* ── Animation utilities ──────────────────────────────────── */
.anim-fade-in    { animation: fadeIn  0.6s var(--ease-out) forwards; }
.anim-fade-up    { animation: fadeUp  0.8s var(--ease-out) forwards; }
.anim-scale-in   { animation: scaleIn 0.5s var(--ease-out) forwards; }
.anim-clip-reveal{ animation: clipReveal 0.9s var(--ease-out) forwards; }

/* Hero glow pulse */
.hero__glow { animation: glowPulse 4s ease-in-out infinite; }

/* Playing indicator */
.beat-card.playing .play-btn-circle {
  animation: pulse-ring 2s ease-in-out infinite;
}

/* Loading spinner */
.spinner {
  width: 20px;
  height: 20px;
  border: 2px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
  display: inline-block;
}

/* ── Waveform visualizer (CSS-only animation) ─────────────── */
.waveform-bars {
  display: flex;
  align-items: center;
  gap: 2px;
  height: 20px;
}
.waveform-bar {
  width: 3px;
  background: var(--accent);
  border-radius: var(--radius-full);
  animation: waveformLoop 0.8s ease-in-out infinite;
}
.waveform-bar:nth-child(1) { animation-delay: 0s; }
.waveform-bar:nth-child(2) { animation-delay: 0.1s; }
.waveform-bar:nth-child(3) { animation-delay: 0.2s; }
.waveform-bar:nth-child(4) { animation-delay: 0.05s; }
.waveform-bar:nth-child(5) { animation-delay: 0.15s; }

/* Not playing state */
.waveform-bars.paused .waveform-bar {
  animation-play-state: paused;
}

/* ── Page transition overlay ──────────────────────────────── */
#page-loader {
  position: fixed;
  inset: 0;
  z-index: 99999;
  background: var(--bg-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 1.5rem;
  transition: opacity 0.5s var(--ease-premium), visibility 0.5s;
}
#page-loader.hidden {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.loader-logo {
  width: 120px;
  filter: var(--logo-filter);
  animation: pulse-ring 1.5s ease-in-out infinite;
}

.loader-progress {
  width: 200px;
  height: 2px;
  background: var(--border);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.loader-bar {
  height: 100%;
  background: var(--accent);
  border-radius: var(--radius-full);
  width: 0%;
  transition: width 1.2s var(--ease-out);
}

/* ── Section transitions (GSAP targets) ──────────────────── */
[data-gsap="fade-up"] {
  opacity: 0;
  transform: translateY(40px);
}

[data-gsap="fade-left"] {
  opacity: 0;
  transform: translateX(-40px);
}

[data-gsap="fade-right"] {
  opacity: 0;
  transform: translateX(40px);
}

[data-gsap="scale-up"] {
  opacity: 0;
  transform: scale(0.9);
}

[data-gsap="clip-up"] {
  clip-path: inset(0 0 100% 0);
  opacity: 0;
}

/* ── Hover magnetic effect target ─────────────────────────── */
[data-magnetic] {
  display: inline-block;
  transform-origin: center;
}

/* ── Theme transition ─────────────────────────────────────── */
.theme-transitioning * {
  transition:
    background-color 0.5s var(--ease-premium),
    color 0.5s var(--ease-premium),
    border-color 0.5s var(--ease-premium),
    box-shadow 0.5s var(--ease-premium) !important;
}

/* ── Card hover grain effect ──────────────────────────────── */
.beat-card::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: var(--radius-lg);
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.75' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  background-size: 150px;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-base);
  mix-blend-mode: overlay;
  z-index: 1;
}
.beat-card:hover::before { opacity: 0.03; }

/* ── Mobile menu animation ────────────────────────────────── */
.mobile-menu__links a {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.4s var(--ease-out), transform 0.4s var(--ease-out), color var(--transition-fast);
}
#mobile-menu.open .mobile-menu__links a:nth-child(1) { opacity: 1; transform: translateY(0); transition-delay: 0.1s; }
#mobile-menu.open .mobile-menu__links a:nth-child(2) { opacity: 1; transform: translateY(0); transition-delay: 0.15s; }
#mobile-menu.open .mobile-menu__links a:nth-child(3) { opacity: 1; transform: translateY(0); transition-delay: 0.2s; }
#mobile-menu.open .mobile-menu__links a:nth-child(4) { opacity: 1; transform: translateY(0); transition-delay: 0.25s; }