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

:root {
  --bg-primary: #0a0f1d;
  --bg-secondary: #111827;
  --bg-card: rgba(255, 255, 255, 0.03);
  --bg-card-hover: rgba(255, 255, 255, 0.06);
  --border-color: rgba(255, 255, 255, 0.06);
  --border-hover: rgba(255, 255, 255, 0.12);
  --text-primary: #f1f5f9;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --accent: #14b8a6;
  --accent-hover: #0d9488;
  --accent-glow: rgba(20, 184, 166, 0.25);
  --accent-secondary: #0ea5e9;
}

html {
  scroll-behavior: smooth;
}

[class*="rounded"] {
  border-radius: 5px !important;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.grain-overlay {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 9999;
  opacity: 0.03;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
  background-repeat: repeat;
  background-size: 256px 256px;
}

.nav-blur {
  backdrop-filter: blur(20px) saturate(1.5);
  -webkit-backdrop-filter: blur(20px) saturate(1.5);
  background-color: rgba(10, 15, 29, 0.8);
  border-bottom: 1px solid var(--border-color);
}

.glass-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 5px;
  transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  position: relative;
  overflow: hidden;
}

.glass-card::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: linear-gradient(135deg, rgba(20, 184, 166, 0.08), transparent 50%);
  opacity: 0;
  transition: opacity 0.4s ease;
}

.glass-card:hover {
  border-color: var(--border-hover);
  transform: translateY(-4px);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3), 0 0 40px var(--accent-glow);
}

.glass-card:hover::before {
  opacity: 1;
}

.glass-card-static {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 5px;
}

.glass-card-static:focus-within {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow);
}

.tool-card {
  cursor: pointer;
}

.tool-card .tool-icon {
  width: 3rem;
  height: 3rem;
  border-radius: 5px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  background: linear-gradient(135deg, rgba(20, 184, 166, 0.15), rgba(14, 165, 233, 0.15));
  border: 1px solid rgba(20, 184, 166, 0.2);
  flex-shrink: 0;
}

.gradient-text {
  background: linear-gradient(135deg, var(--accent), var(--accent-secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.gradient-border {
  position: relative;
}

.gradient-border::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, var(--accent), var(--accent-secondary), transparent);
  border-radius: 1px;
}

.hero-glow {
  position: absolute;
  width: 600px;
  height: 600px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(20, 184, 166, 0.12) 0%, transparent 70%);
  top: -200px;
  right: -200px;
  pointer-events: none;
}

.hero-glow-2 {
  position: absolute;
  width: 400px;
  height: 400px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(14, 165, 233, 0.08) 0%, transparent 70%);
  bottom: -150px;
  left: -150px;
  pointer-events: none;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.75rem;
  background: linear-gradient(135deg, var(--accent), var(--accent-hover));
  color: #fff;
  font-weight: 600;
  font-size: 0.875rem;
  border: none;
  border-radius: 5px;
  cursor: pointer;
  transition: all 0.3s ease;
  text-decoration: none;
  position: relative;
  overflow: hidden;
}

.btn-primary::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(255,255,255,0.1), transparent);
  opacity: 0;
  transition: opacity 0.3s ease;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 30px var(--accent-glow);
}

.btn-primary:hover::before {
  opacity: 1;
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.75rem;
  background: transparent;
  color: var(--text-primary);
  font-weight: 600;
  font-size: 0.875rem;
  border: 1px solid var(--border-color);
  border-radius: 5px;
  cursor: pointer;
  transition: all 0.3s ease;
  text-decoration: none;
}

.btn-secondary:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: rgba(20, 184, 166, 0.05);
}

.input-field {
  width: 100%;
  padding: 1rem 1.25rem;
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: 5px;
  color: var(--text-primary);
  font-size: 0.95rem;
  font-family: 'Inter', sans-serif;
  transition: all 0.3s ease;
  outline: none;
}

.input-field:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow);
}

.input-field::placeholder {
  color: var(--text-muted);
}

select.input-field {
  appearance: none;
  cursor: pointer;
}

.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.6s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

.fade-in-delay-1 { transition-delay: 0.1s; }
.fade-in-delay-2 { transition-delay: 0.2s; }
.fade-in-delay-3 { transition-delay: 0.3s; }

@keyframes heartbeat {
  0%, 100% { transform: scale(1); }
  15% { transform: scale(1.3); }
  30% { transform: scale(1); }
  45% { transform: scale(1.15); }
  60% { transform: scale(1); }
}

.heart-beat {
  display: inline-block;
  color: #ef4444;
  animation: heartbeat 1.5s ease-in-out infinite;
}

@keyframes float {
  0%, 100% { transform: translateY(0px); }
  50% { transform: translateY(-10px); }
}

.float-anim {
  animation: float 4s ease-in-out infinite;
}

@keyframes pulse-glow {
  0%, 100% { box-shadow: 0 0 20px var(--accent-glow); }
  50% { box-shadow: 0 0 40px var(--accent-glow), 0 0 60px rgba(20, 184, 166, 0.1); }
}

.pulse-glow {
  animation: pulse-glow 3s ease-in-out infinite;
}

@keyframes spin-slow {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

.spin-slow {
  animation: spin-slow 20s linear infinite;
}

.tag {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  padding: 0.25rem 0.75rem;
  font-size: 0.75rem;
  font-weight: 500;
  border-radius: 5px;
  background: rgba(20, 184, 166, 0.1);
  color: var(--accent);
  border: 1px solid rgba(20, 184, 166, 0.2);
}

.section-divider {
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--border-color), transparent);
  margin: 0 auto;
}

.qr-result {
  opacity: 0;
  transform: scale(0.95);
  transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.qr-result.visible {
  opacity: 1;
  transform: scale(1);
}

footer {
  margin-top: auto;
  border-top: 1px solid var(--border-color);
}

@media (max-width: 640px) {
  .hero-glow {
    width: 300px;
    height: 300px;
    top: -100px;
    right: -100px;
  }
  .hero-glow-2 {
    width: 200px;
    height: 200px;
    bottom: -80px;
    left: -80px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}