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

:root {
  --primary-color: #2563eb;
  --primary-hover: #1d4ed8;
  --secondary-color: #64748b;
  --text-primary: #1e293b;
  --text-secondary: #64748b;
  --bg-primary: #ffffff;
  --bg-secondary: #f8fafc;
  --border-color: #e2e8f0;
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1),
    0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1),
    0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1),
    0 10px 10px -5px rgba(0, 0, 0, 0.04);
}

body {
  font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    Oxygen, Ubuntu, Cantarell, sans-serif;
  color: var(--text-primary);
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  min-height: 100vh;
  line-height: 1.6;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

/* Header */
.header {
  padding: 2rem 0;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  box-shadow: var(--shadow-sm);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo-section {
  text-align: center;
  width: 100%;
}

.logo {
  font-size: 2rem;
  font-weight: 700;
  color: var(--primary-color);
  margin-bottom: 0.25rem;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.tagline {
  font-size: 0.9rem;
  color: var(--text-secondary);
  font-weight: 400;
}

/* Hero Section */
.hero {
  padding: 4rem 0;
  text-align: center;
  color: white;
}

.hero-content {
  max-width: 700px;
  margin: 0 auto;
}

.hero-title {
  font-size: 3rem;
  font-weight: 700;
  margin-bottom: 1rem;
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.hero-description {
  font-size: 1.25rem;
  margin-bottom: 2rem;
  opacity: 0.95;
  line-height: 1.8;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  font-size: 1rem;
  font-weight: 500;
  text-decoration: none;
  border-radius: 0.5rem;
  transition: all 0.3s ease;
  border: none;
  cursor: pointer;
  font-family: inherit;
}

.btn-primary {
  background: white;
  color: var(--primary-color);
  box-shadow: var(--shadow-lg);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-xl);
  background: #f8fafc;
}

.btn-secondary {
  background: var(--primary-color);
  color: white;
  box-shadow: var(--shadow-md);
}

.btn-secondary:hover {
  background: var(--primary-hover);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

/* Projects Section */
.projects {
  padding: 4rem 0;
  background: white;
  border-radius: 1rem 1rem 0 0;
  margin-top: 2rem;
}

.section-title {
  font-size: 2.5rem;
  font-weight: 700;
  text-align: center;
  margin-bottom: 3rem;
  color: var(--text-primary);
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 2rem;
  margin-bottom: 2rem;
}

.project-card {
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: 1rem;
  padding: 2rem;
  text-align: center;
  transition: all 0.3s ease;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  align-items: center;
}

.project-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--primary-color);
}

.project-icon {
  font-size: 3rem;
  margin-bottom: 1rem;
  display: block;
}

.project-name {
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
  color: var(--text-primary);
}

.project-description {
  font-size: 0.95rem;
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
  flex-grow: 1;
}

.project-card .btn {
  width: 100%;
  justify-content: center;
}

/* Footer */
.footer {
  background: var(--bg-secondary);
  padding: 2rem 0;
  text-align: center;
  border-top: 1px solid var(--border-color);
}

.footer-content {
  color: var(--text-secondary);
  font-size: 0.9rem;
}

.footer-content a {
  color: var(--primary-color);
  text-decoration: none;
  transition: color 0.3s ease;
}

.footer-content a:hover {
  color: var(--primary-hover);
  text-decoration: underline;
}

.footer-content p {
  margin: 0.5rem 0;
}

/* Responsive Design */
@media (max-width: 768px) {
  .hero-title {
    font-size: 2rem;
  }

  .hero-description {
    font-size: 1rem;
  }

  .projects-grid {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }

  .section-title {
    font-size: 2rem;
  }

  .logo {
    font-size: 1.5rem;
  }

  .tagline {
    font-size: 0.8rem;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 15px;
  }

  .hero {
    padding: 2rem 0;
  }

  .projects {
    padding: 2rem 0;
  }

  .project-card {
    padding: 1.5rem;
  }
}

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

.project-card {
  animation: fadeIn 0.5s ease-out;
}

.project-card:nth-child(1) {
  animation-delay: 0.1s;
}
.project-card:nth-child(2) {
  animation-delay: 0.2s;
}
.project-card:nth-child(3) {
  animation-delay: 0.3s;
}
.project-card:nth-child(4) {
  animation-delay: 0.4s;
}
.project-card:nth-child(5) {
  animation-delay: 0.5s;
}
.project-card:nth-child(6) {
  animation-delay: 0.6s;
}
.project-card:nth-child(7) {
  animation-delay: 0.7s;
}
.project-card:nth-child(8) {
  animation-delay: 0.8s;
}
.project-card:nth-child(9) {
  animation-delay: 0.9s;
}
.project-card:nth-child(10) {
  animation-delay: 1s;
}