:root {
  --primary-color: #2c5aa0;
  --secondary-color: #1a365d;
  --accent-color: #e53e3e;
  --text-dark: #2d3748;
  --text-light: #718096;
  --bg-light: #f7fafc;
}

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

body {
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  line-height: 1.6;
  color: var(--text-dark);
}

/* Navigation */
.navbar-brand {
  font-size: 1.5rem;
}

.navbar-nav .nav-link {
  font-weight: 500;
  margin: 0 0.5rem;
  transition: color 0.3s ease;
}

.navbar-nav .nav-link:hover {
  color: var(--accent-color) !important;
}

/* Hero Section */
.hero-section {
  background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
  color: white;
  padding-top: 80px;
}

.hero-content h1 {
  font-size: 3.5rem;
  margin-bottom: 1rem;
}

.profile-img {
  width: 300px;
  height: 300px;
  object-fit: cover;
  border: 5px solid rgba(255, 255, 255, 0.2);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

.hero-buttons .btn {
  padding: 12px 30px;
  font-weight: 600;
  border-radius: 50px;
  transition: all 0.3s ease;
}

.hero-buttons .btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
}

/* Section Titles */
.section-title {
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--primary-color);
  position: relative;
  display: inline-block;
}

.section-title::after {
  content: "";
  position: absolute;
  bottom: -10px;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 3px;
  background: var(--accent-color);
}

/* Cards */
.content-card {
  background: white;
  border-radius: 15px;
  box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
  transition: all 0.3s ease;
  height: 100%;
  overflow: hidden;
}

.content-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
}

.card-header {
  background: var(--primary-color);
  color: white;
  padding: 1rem 1.5rem;
  font-weight: 600;
}

.card-body {
  padding: 1.5rem;
}

.card-title {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
  color: var(--text-dark);
}

.card-text {
  color: var(--text-light);
  font-size: 0.9rem;
  margin-bottom: 1rem;
}

.card-link {
  color: var(--primary-color);
  text-decoration: none;
  font-weight: 500;
  transition: color 0.3s ease;
}

.card-link:hover {
  color: var(--accent-color);
}

.language-badge {
  background: var(--accent-color);
  color: white;
  padding: 0.25rem 0.75rem;
  border-radius: 20px;
  font-size: 0.8rem;
  font-weight: 500;
}

/* Social Links */
.social-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 1rem;
  margin-top: 2rem;
}

.social-link {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 10px;
  color: white;
  text-decoration: none;
  transition: all 0.3s ease;
}

.social-link:hover {
  background: var(--accent-color);
  color: white;
  transform: translateY(-2px);
}

.social-link i {
  font-size: 1.5rem;
  margin-right: 0.5rem;
}

/* Responsive Design */
@media (max-width: 768px) {
  .hero-content h1 {
    font-size: 2.5rem;
  }

  .profile-img {
    width: 250px;
    height: 250px;
  }

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

  .social-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 576px) {
  .hero-content h1 {
    font-size: 2rem;
  }

  .profile-img {
    width: 200px;
    height: 200px;
  }

  .social-grid {
    grid-template-columns: 1fr;
  }
}

/* Loading Animation */
.loading {
  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);
  }
}

/* Smooth Scrolling */
html {
  scroll-behavior: smooth;
}

/* Section Padding */
section {
  padding: 80px 0;
}

/* About Section */
.about-content p {
  font-size: 1.1rem;
  margin-bottom: 1.5rem;
}