* { margin: 0; padding: 0; box-sizing: border-box; }

body { overflow-x: hidden; }

::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: #374151; border-radius: 3px; }
.dark ::-webkit-scrollbar-thumb { background: #4b5563; }

@keyframes fadeIn { from { opacity: 0; transform: translateY(12px); } to { opacity: 1; transform: translateY(0); } }
@keyframes slideIn { from { opacity: 0; transform: translateX(20px); } to { opacity: 1; transform: translateX(0); } }
@keyframes slideUp { from { opacity: 0; transform: translateY(30px); } to { opacity: 1; transform: translateY(0); } }
@keyframes pulse-glow { 0%, 100% { box-shadow: 0 0 20px rgba(37,99,235,0.3); } 50% { box-shadow: 0 0 40px rgba(37,99,235,0.6); } }
@keyframes count-up { from { opacity: 0; transform: scale(0.8); } to { opacity: 1; transform: scale(1); } }
@keyframes spin-slow { from { transform: rotate(0deg); } to { transform: rotate(360deg); } }
@keyframes draw-check { 0% { stroke-dashoffset: 100; } 100% { stroke-dashoffset: 0; } }
@keyframes confetti-fall { 0% { transform: translateY(-10px) rotate(0deg); opacity: 1; } 100% { transform: translateY(100px) rotate(720deg); opacity: 0; } }
@keyframes shimmer { 0% { background-position: -200% 0; } 100% { background-position: 200% 0; } }
@keyframes bounce-in { 0% { transform: scale(0.3); opacity: 0; } 50% { transform: scale(1.05); } 70% { transform: scale(0.9); } 100% { transform: scale(1); opacity: 1; } }
@keyframes glow-border { 0%, 100% { border-color: rgba(6,182,212,0.3); } 50% { border-color: rgba(6,182,212,0.7); } }

.animate-fade-in { animation: fadeIn 0.5s ease-out forwards; }
.animate-slide-in { animation: slideIn 0.4s ease-out forwards; }
.animate-slide-up { animation: slideUp 0.5s ease-out forwards; }
.animate-bounce-in { animation: bounce-in 0.6s ease-out forwards; }
.animate-pulse-glow { animation: pulse-glow 2s ease-in-out infinite; }
.animate-glow-border { animation: glow-border 2s ease-in-out infinite; }

.skeleton {
  background: linear-gradient(90deg, #1e293b 25%, #334155 50%, #1e293b 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  border-radius: 8px;
}
.light .skeleton {
  background: linear-gradient(90deg, #e2e8f0 25%, #f1f5f9 50%, #e2e8f0 75%);
  background-size: 200% 100%;
}

.glass-card {
  background: rgba(30, 41, 59, 0.6);
  backdrop-filter: blur(16px);
  border: 1px solid rgba(255,255,255,0.08);
}
.light .glass-card {
  background: rgba(255,255,255,0.7);
  backdrop-filter: blur(16px);
  border: 1px solid rgba(0,0,0,0.06);
}

.otp-input {
  width: 48px; height: 56px;
  text-align: center;
  font-size: 1.5rem;
  font-family: 'JetBrains Mono', monospace;
  font-weight: 600;
  border: 2px solid rgba(255,255,255,0.15);
  border-radius: 12px;
  background: rgba(255,255,255,0.05);
  color: #e2e8f0;
  outline: none;
  transition: all 0.2s;
}
.otp-input:focus {
  border-color: #06b6d4;
  box-shadow: 0 0 12px rgba(6,182,212,0.3);
}
.light .otp-input {
  border-color: rgba(0,0,0,0.15);
  background: rgba(0,0,0,0.03);
  color: #1e293b;
}
.light .otp-input:focus {
  border-color: #2563eb;
  box-shadow: 0 0 12px rgba(37,99,235,0.2);
}

.gradient-btn {
  background: linear-gradient(135deg, #2563eb, #4f46e5);
  transition: all 0.3s;
}
.gradient-btn:hover {
  background: linear-gradient(135deg, #3b82f6, #6366f1);
  transform: translateY(-1px);
  box-shadow: 0 8px 25px rgba(37,99,235,0.4);
}
.gradient-btn:active { transform: scale(0.97); }

.dark .gradient-btn {
  background: linear-gradient(135deg, #06b6d4, #2563eb);
}
.dark .gradient-btn:hover {
  background: linear-gradient(135deg, #22d3ee, #3b82f6);
  box-shadow: 0 8px 25px rgba(6,182,212,0.4);
}

input[type="text"], input[type="password"], input[type="email"], input[type="number"], select, textarea {
  transition: all 0.2s;
}

.tab-active {
  position: relative;
}
.tab-active::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, #2563eb, #06b6d4);
  border-radius: 1px;
}

@media (max-width: 768px) {
  .otp-input { width: 42px; height: 50px; font-size: 1.25rem; }
}