/* ============================================================
   BUTTONS.CSS — Skeuomorphic Aero Button System
   ============================================================ */

/* ── Primary Aero Button (3D skeuomorphic) ── */
.btn-aero {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 16px 36px;
  font-size: 1.05rem;
  font-weight: 600;
  color: #fff;
  border-radius: var(--radius-full);
  overflow: hidden;
  cursor: none;
  transition: all 0.15s var(--ease-out-expo);
  isolation: isolate;
}

.btn-aero--primary {
  background: var(--grad-rainbow);
  background-size: 400% 400%;
  animation: rainbow-cycle 2s linear infinite;
  box-shadow:
    0 24px 90px rgba(0, 180, 240, 0.7),
    0 48px 180px rgba(0, 160, 220, 0.4),
    inset 0 6px 0 rgba(255,255,255,0.6),
    inset 0 -18px 36px rgba(0,0,0,0.3);
}

.btn-aero--primary:hover {
  transform: translateY(-3px) scale(1.08);
  filter: brightness(1.3);
  box-shadow:
    0 48px 150px rgba(0, 180, 240, 0.85),
    0 96px 300px rgba(0, 160, 220, 0.6),
    inset 0 6px 0 rgba(255,255,255,0.6),
    inset 0 -18px 36px rgba(0,0,0,0.3);
  animation: rainbow-cycle 2s linear infinite, electric-glow-pulse 0.6s ease-in-out infinite;
}

.btn-aero--primary:active {
  transform: translateY(1px) scale(0.98);
  box-shadow:
    0 2px 8px rgba(0, 180, 240, 0.3),
    inset 0 2px 4px rgba(0,0,0,0.2);
}

/* ── Button Inner Shine Sweep ── */
.btn-shine {
  position: absolute;
  top: 0; left: -100%;
  width: 80%;
  height: 100%;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(255,255,255,0.45),
    rgba(255,255,255,0.75),
    rgba(255,255,255,0.45),
    transparent
  );
  transform: skewX(-25deg);
  z-index: 2;
  pointer-events: none;
  animation: btn-shine-sweep 0.8s ease-in-out infinite;
}

@keyframes btn-shine-sweep {
  0%, 100% { left: -120%; }
  50%      { left: 120%; }
}

/* ── Secondary Button ── */
.btn-aero--secondary {
  background: var(--glass-bg-heavy);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  border: 1px solid var(--glow-cyan);
  color: rgba(220, 235, 255, 0.9);
  box-shadow:
    0 4px 15px rgba(0,0,0,0.1),
    0 0 15px var(--glow-cyan),
    0 0 30px rgba(77, 166, 255, 0.1),
    inset 0 1px 0 rgba(255,255,255,0.08);
}

.btn-aero--secondary:hover {
  border-color: var(--glow-cyan);
  transform: translateY(-2px) scale(1.08);
  filter: brightness(1.3);
  box-shadow:
    0 8px 25px rgba(0,0,0,0.15),
    0 0 30px rgba(77,166,255,0.1),
    0 0 60px var(--glow-cyan),
    0 0 120px var(--glow-blue),
    inset 0 1px 0 rgba(255,255,255,0.12);
  animation: electric-glow-pulse 0.6s ease-in-out infinite;
}

/* ── Ghost Button ── */
.btn-aero--ghost {
  background: linear-gradient(rgba(255,255,255,0.04), rgba(255,255,255,0.04)) padding-box,
              var(--grad-rainbow) border-box;
  border: 2px solid transparent;
  color: rgba(200, 215, 240, 0.85);
}

.btn-aero--ghost:hover {
  background: linear-gradient(rgba(255,255,255,0.04), rgba(255,255,255,0.04)) padding-box,
              var(--grad-rainbow) border-box;
  border: 2px solid transparent;
  transform: translateY(-2px) scale(1.08);
  filter: brightness(1.3);
  box-shadow:
    0 8px 25px rgba(0,0,0,0.1),
    0 0 40px var(--glow-purple),
    0 0 80px var(--glow-pink),
    0 0 150px var(--glow-orange);
  animation: electric-glow-pulse 0.6s ease-in-out infinite;
}

/* ── XL Size ── */
.btn-aero--xl {
  padding: 20px 48px;
  font-size: 1.2rem;
}
/* ── XL Size — Even Bigger Shadows ── */
.btn-aero--xl.btn-aero--primary {
  box-shadow:
    0 16px 50px rgba(0, 180, 240, 0.75),
    0 32px 100px rgba(0, 160, 220, 0.5),
    inset 0 2px 0 rgba(255,255,255,0.6),
    inset 0 -6px 12px rgba(0,0,0,0.3);
}
.btn-aero--xl.btn-aero--primary:hover {
  box-shadow:
    0 24px 80px rgba(0, 180, 240, 0.85),
    0 48px 160px rgba(0, 160, 220, 0.6),
    inset 0 2px 0 rgba(255,255,255,0.6),
    inset 0 -6px 12px rgba(0,0,0,0.3);
}
.btn-aero--xl.btn-aero--glow {
  box-shadow:
    0 0 50px var(--glow-cyan),
    0 0 100px var(--glow-purple),
    0 0 160px var(--glow-pink);
}
.btn-aero--xl.btn-aero--glow:hover {
  box-shadow:
    0 0 70px var(--glow-cyan),
    0 0 140px var(--glow-purple),
    0 0 240px var(--glow-pink),
    0 0 360px var(--glow-orange);
}

/* ── Small Glass Button ── */
.btn-glass-sm {
  padding: 10px 24px;
  font-size: 0.875rem;
  font-weight: 500;
  color: rgba(220, 235, 255, 0.9);
  background: var(--glass-bg-light);
  backdrop-filter: blur(var(--glass-blur-light));
  -webkit-backdrop-filter: blur(var(--glass-blur-light));
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-full);
  cursor: none;
  transition: all 0.15s var(--ease-out-expo);
  box-shadow:
    0 0 20px rgba(77, 166, 255, 0.3),
    0 0 40px rgba(0, 229, 255, 0.15);
}

.btn-glass-sm:hover {
  background: rgba(77, 166, 255, 0.2);
  border-color: rgba(77, 166, 255, 0.5);
  transform: scale(1.08);
  filter: brightness(1.3);
  box-shadow:
    0 0 30px rgba(77, 166, 255, 0.4),
    0 0 60px rgba(0, 229, 255, 0.25);
  animation: electric-glow-pulse 0.6s ease-in-out infinite;
}

/* ── Electric Glow Pulse (filter-based, additive to box-shadow) ── */
@keyframes electric-glow-pulse {
  0%, 100% {
    filter: drop-shadow(0 0 6px var(--glow-cyan)) drop-shadow(0 0 14px var(--glow-blue));
  }
  50% {
    filter: drop-shadow(0 0 14px var(--glow-cyan)) drop-shadow(0 0 28px var(--glow-blue)) drop-shadow(0 0 40px var(--glow-purple));
  }
}

/* ── Electric Rainbow Pulse Button ── */
.btn-aero--glow {
  background: var(--grad-rainbow);
  background-size: 400% 400%;
  animation: rainbow-cycle 4s linear infinite;
  box-shadow:
    0 0 30px var(--glow-cyan),
    0 0 60px var(--glow-purple),
    0 0 120px var(--glow-pink),
    inset 0 1px 0 rgba(255,255,255,0.3);
}

.btn-aero--glow:hover {
  transform: translateY(-3px) scale(1.08);
  filter: brightness(1.3);
  box-shadow:
    0 0 60px var(--glow-cyan),
    0 0 120px var(--glow-purple),
    0 0 200px var(--glow-pink),
    0 0 300px var(--glow-orange),
    inset 0 1px 0 rgba(255,255,255,0.4);
  animation: rainbow-cycle 2s linear infinite, electric-glow-pulse 0.6s ease-in-out infinite;
}

.btn-aero--glow:active {
  transform: translateY(1px) scale(0.98);
}

.btn-aero:hover {
  transform: scale(1.08);
  filter: brightness(1.3);
  animation: electric-glow-pulse 0.6s ease-in-out infinite;
}

/* ── Strobe Effect ── */
@keyframes btn-strobe {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.15; }
}

.strobe:hover {
  animation: btn-strobe 0.15s ease-in-out infinite;
}