:root {
  --primary: #333333;
  --secondary: #666666;
  --background: #f0f0f0;
  --footer-bg: #222222;
  --button: #555555;
  --section-bg-1: #e8e8e8;
  --section-bg-2: #d8d8d8;
  --section-bg-3: #c8c8c8;
  --section-bg-4: #b8b8b8;
  --text-primary: #111111;
  --text-secondary: #444444;
  --text-light: #f8f8f8;
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.08);
  --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.12);
  --shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.16);
  --transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
}

@font-face {
  font-family: 'GeometricAbstract';
  src: url('https://fonts.googleapis.com/css2?family=Montserrat:wght@300;400;700&family=Playfair+Display:wght@700&display=swap');
}

body {
  font-family: 'Montserrat', sans-serif;
  background-color: var(--background);
  color: var(--text-primary);
  line-height: 1.8;
  background-image: 
    radial-gradient(circle at 10% 20%, rgba(255,255,255,0.1) 0%, transparent 20%),
    linear-gradient(135deg, var(--section-bg-1) 0%, var(--background) 100%);
  background-attachment: fixed;
}

h1, h2, h3, h4, h5, h6 {
  font-family: 'Playfair Display', serif;
  font-weight: 700;
  letter-spacing: -0.5px;
  margin-bottom: 1.5rem;
  color: var(--primary);
}

h1 {
  font-size: 3.5rem;
  line-height: 1.2;
  background: linear-gradient(90deg, var(--primary), var(--secondary));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

p {
  margin-bottom: 2rem;
  color: var(--text-secondary);
  max-width: 65ch;
}

a {
  color: var(--secondary);
  text-decoration: none;
  transition: var(--transition);
  position: relative;
}

a:hover {
  color: var(--primary);
}

a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--primary);
  transition: var(--transition);
}

a:hover::after {
  width: 100%;
}

.btn {
  display: inline-block;
  padding: 1rem 2.5rem;
  background-color: var(--button);
  color: var(--text-light);
  border-radius: 0;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  transition: var(--transition);
  box-shadow: var(--shadow-sm);
  position: relative;
  overflow: hidden;
  border: none;
  cursor: pointer;
}

.btn:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
  background-color: var(--primary);
}

.btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
  transition: 0.5s;
}

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

.section-bg-1 {
  background-color: var(--section-bg-1);
  background-image: 
    linear-gradient(135deg, transparent 65%, rgba(0,0,0,0.03) 100%),
    repeating-linear-gradient(45deg, transparent, transparent 5px, rgba(0,0,0,0.02) 5px, rgba(0,0,0,0.02) 10px);
}

.section-bg-2 {
  background-color: var(--section-bg-2);
  background-image: 
    linear-gradient(135deg, transparent 65%, rgba(0,0,0,0.03) 100%),
    repeating-linear-gradient(-45deg, transparent, transparent 5px, rgba(0,0,0,0.02) 5px, rgba(0,0,0,0.02) 10px);
}

.section-bg-3 {
  background-color: var(--section-bg-3);
  background-image: 
    linear-gradient(135deg, transparent 65%, rgba(0,0,0,0.03) 100%),
    repeating-radial-gradient(circle, transparent, transparent 5px, rgba(0,0,0,0.02) 5px, rgba(0,0,0,0.02) 10px);
}

.section-bg-4 {
  background-color: var(--section-bg-4);
  background-image: 
    linear-gradient(135deg, transparent 65%, rgba(0,0,0,0.03) 100%),
    repeating-linear-gradient(0deg, transparent, transparent 5px, rgba(0,0,0,0.02) 5px, rgba(0,0,0,0.02) 10px);
}

.card {
  background-color: white;
  border-radius: 0;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  overflow: hidden;
  position: relative;
}

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

.card::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 5px;
  background: linear-gradient(90deg, var(--primary), var(--secondary));
}

footer {
  background-color: var(--footer-bg);
  color: var(--text-light);
  padding: 4rem 0;
}

footer a {
  color: var(--text-light);
}

footer a:hover {
  color: white;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

.fade-in {
  animation: fadeIn 0.8s ease-out forwards;
}

.delay-1 { animation-delay: 0.2s; }
.delay-2 { animation-delay: 0.4s; }
.delay-3 { animation-delay: 0.6s; }

@media (max-width: 768px) {
  h1 {
    font-size: 2.5rem;
  }
  
  .btn {
    padding: 0.8rem 1.8rem;
  }
}