:root {
  
  --color-gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  --color-gradient-secondary: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
  --color-gradient-accent: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
  --color-gradient-dark: linear-gradient(135deg, #2c3e50 0%, #3498db 100%);
  
  
  --shadow-soft: 0 2px 20px rgba(0, 0, 0, 0.08);
  --shadow-medium: 0 8px 30px rgba(0, 0, 0, 0.12);
  --shadow-strong: 0 20px 60px rgba(0, 0, 0, 0.15);
  --shadow-colored: 0 10px 40px rgba(102, 126, 234, 0.3);
  
  
  --transition-smooth: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --transition-bounce: all 0.6s cubic-bezier(0.68, -0.55, 0.265, 1.55);
  --transition-elastic: all 0.8s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  
  
  --space-micro: 0.25rem;
  --space-tiny: 0.5rem;
  --space-small: 1rem;
  --space-medium: 1.5rem;
  --space-large: 2rem;
  --space-huge: 3rem;
  --space-massive: 4rem;
}


.glass-morphism {
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid rgba(255, 255, 255, 0.2);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
}

.glass-morphism-dark {
  background: rgba(0, 0, 0, 0.1);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}


.gradient-text {
  background: var(--color-gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  font-weight: 700;
}

.gradient-text-secondary {
  background: var(--color-gradient-secondary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  font-weight: 700;
}

.gradient-text-accent {
  background: var(--color-gradient-accent);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  font-weight: 700;
}


.btn-modern {
  position: relative;
  overflow: hidden;
  background: var(--color-gradient-primary);
  border: none;
  color: white;
  padding: 1rem 2rem;
  border-radius: 50px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
  transition: var(--transition-smooth);
  cursor: pointer;
  box-shadow: var(--shadow-medium);
}

.btn-modern::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
  transition: left 0.6s;
}

.btn-modern:hover::before {
  left: 100%;
}

.btn-modern:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-strong);
}

.btn-modern:active {
  transform: translateY(-1px);
}


.card-modern {
  background: white;
  border-radius: 20px;
  padding: 2rem;
  box-shadow: var(--shadow-soft);
  transition: var(--transition-smooth);
  position: relative;
  overflow: hidden;
}

.card-modern::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--color-gradient-primary);
  transform: scaleX(0);
  transition: transform 0.3s ease;
}

.card-modern:hover::before {
  transform: scaleX(1);
}

.card-modern:hover {
  transform: translateY(-10px);
  box-shadow: var(--shadow-strong);
}


.loading-modern {
  display: inline-block;
  width: 20px;
  height: 20px;
  border: 3px solid rgba(255, 255, 255, 0.3);
  border-radius: 50%;
  border-top-color: white;
  animation: spin 1s ease-in-out infinite;
}

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

.loading-dots {
  display: inline-block;
}

.loading-dots::after {
  content: '';
  animation: dots 1.5s steps(4, end) infinite;
}

@keyframes dots {
  0%, 20% { content: ''; }
  40% { content: '.'; }
  60% { content: '..'; }
  80%, 100% { content: '...'; }
}


.scroll-reveal {
  opacity: 0;
  transform: translateY(50px);
  transition: all 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.scroll-reveal.revealed {
  opacity: 1;
  transform: translateY(0);
}

.scroll-reveal-left {
  opacity: 0;
  transform: translateX(-50px);
  transition: all 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.scroll-reveal-left.revealed {
  opacity: 1;
  transform: translateX(0);
}

.scroll-reveal-right {
  opacity: 0;
  transform: translateX(50px);
  transition: all 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.scroll-reveal-right.revealed {
  opacity: 1;
  transform: translateX(0);
}

.scroll-reveal-scale {
  opacity: 0;
  transform: scale(0.8);
  transition: all 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.scroll-reveal-scale.revealed {
  opacity: 1;
  transform: scale(1);
}


.hover-lift {
  transition: var(--transition-smooth);
}

.hover-lift:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-medium);
}

.hover-scale {
  transition: var(--transition-smooth);
}

.hover-scale:hover {
  transform: scale(1.05);
}

.hover-rotate {
  transition: var(--transition-smooth);
}

.hover-rotate:hover {
  transform: rotate(5deg);
}

.hover-glow {
  transition: var(--transition-smooth);
}

.hover-glow:hover {
  box-shadow: 0 0 30px rgba(102, 126, 234, 0.5);
}


.text-shimmer {
  background: linear-gradient(90deg, #667eea, #764ba2, #667eea);
  background-size: 200% 100%;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: shimmer 2s linear infinite;
}

@keyframes shimmer {
  0% { background-position: -200% 0; }
  100% { background-position: 200% 0; }
}

.text-typing {
  overflow: hidden;
  border-right: 2px solid #667eea;
  white-space: nowrap;
  animation: typing 3s steps(40, end), blink-caret 0.75s step-end infinite;
}

@keyframes typing {
  from { width: 0; }
  to { width: 100%; }
}

@keyframes blink-caret {
  from, to { border-color: transparent; }
  50% { border-color: #667eea; }
}


.background-animated {
  background: linear-gradient(-45deg, #667eea, #764ba2, #f093fb, #f5576c);
  background-size: 400% 400%;
  animation: gradient-shift 15s ease infinite;
}

@keyframes gradient-shift {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

.background-particles {
  position: relative;
  overflow: hidden;
}

.background-particles::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image: 
    radial-gradient(circle at 20% 80%, rgba(102, 126, 234, 0.1) 0%, transparent 50%),
    radial-gradient(circle at 80% 20%, rgba(118, 75, 162, 0.1) 0%, transparent 50%),
    radial-gradient(circle at 40% 40%, rgba(240, 147, 251, 0.1) 0%, transparent 50%);
  animation: particle-float 20s ease-in-out infinite;
}

@keyframes particle-float {
  0%, 100% { transform: translateY(0px) rotate(0deg); }
  50% { transform: translateY(-20px) rotate(180deg); }
}


.form-modern {
  position: relative;
}

.form-modern input,
.form-modern textarea {
  background: rgba(255, 255, 255, 0.1);
  border: 2px solid rgba(255, 255, 255, 0.2);
  border-radius: 10px;
  padding: 1rem;
  color: white;
  transition: var(--transition-smooth);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.form-modern input:focus,
.form-modern textarea:focus {
  outline: none;
  border-color: #667eea;
  box-shadow: 0 0 20px rgba(102, 126, 234, 0.3);
  transform: scale(1.02);
}

.form-modern input::placeholder,
.form-modern textarea::placeholder {
  color: rgba(255, 255, 255, 0.7);
}


.nav-modern {
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.2);
  transition: var(--transition-smooth);
}

.nav-modern.scrolled {
  background: rgba(255, 255, 255, 0.95);
  box-shadow: var(--shadow-medium);
}

.nav-link-modern {
  position: relative;
  color: white;
  text-decoration: none;
  transition: var(--transition-smooth);
  padding: 0.5rem 1rem;
  border-radius: 25px;
}

.nav-link-modern::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 25px;
  opacity: 0;
  transition: var(--transition-smooth);
}

.nav-link-modern:hover::before {
  opacity: 1;
}

.nav-link-modern:hover {
  transform: translateY(-2px);
}


.footer-modern {
  background: linear-gradient(135deg, #2c3e50 0%, #3498db 100%);
  position: relative;
  overflow: hidden;
}

.footer-modern::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grain" width="100" height="100" patternUnits="userSpaceOnUse"><circle cx="50" cy="50" r="1" fill="rgba(255,255,255,0.1)"/></pattern></defs><rect width="100" height="100" fill="url(%23grain)"/></svg>');
  opacity: 0.3;
}


@media (max-width: 768px) {
  .card-modern {
    padding: 1.5rem;
    border-radius: 15px;
  }
  
  .btn-modern {
    padding: 0.8rem 1.5rem;
    font-size: 0.9rem;
  }
  
  .glass-morphism {
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
  }
}

@media (max-width: 480px) {
  .card-modern {
    padding: 1rem;
    border-radius: 10px;
  }
  
  .btn-modern {
    padding: 0.7rem 1.2rem;
    font-size: 0.8rem;
  }
}


@media (prefers-color-scheme: dark) {
  .glass-morphism {
    background: rgba(0, 0, 0, 0.2);
    border: 1px solid rgba(255, 255, 255, 0.1);
  }
  
  .card-modern {
    background: rgba(255, 255, 255, 0.05);
    color: white;
  }
  
  .form-modern input,
  .form-modern textarea {
    background: rgba(255, 255, 255, 0.05);
    border: 2px solid rgba(255, 255, 255, 0.1);
    color: white;
  }
}


.will-change-transform {
  will-change: transform;
}

.will-change-opacity {
  will-change: opacity;
}

.will-change-scroll {
  will-change: scroll-position;
}


.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.focus-visible:focus {
  outline: 2px solid #667eea;
  outline-offset: 2px;
}


@media print {
  .glass-morphism,
  .background-animated,
  .background-particles {
    background: white !important;
    backdrop-filter: none !important;
    -webkit-backdrop-filter: none !important;
  }
  
  .btn-modern,
  .nav-link-modern {
    background: white !important;
    color: black !important;
    box-shadow: none !important;
  }
}