/* Base variables */
:root {
  --primary-color: #e63946; /* Red */
  --accent-color: #1d3557; /* Blue */
  --bg-color: #ffffff; /* White */
  --text-color: #111111; /* Black */
  --light-gray: #f8f9fa;
  --font-family: 'Inter', system-ui, -apple-system, sans-serif;
}

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

body {
  font-family: var(--font-family);
  background-color: var(--bg-color);
  color: var(--text-color);
  line-height: 1.6;
}

/* Typography */
h1, h2, h3, h4 {
  font-weight: 700;
  color: var(--text-color);
  margin-bottom: 1rem;
}

a {
  text-decoration: none;
  color: var(--accent-color);
  transition: color 0.3s ease;
}

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

/* Layout */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

section {
  padding: 4rem 0;
}

/* Navbar */
.navbar {
  background-color: var(--bg-color);
  box-shadow: 0 2px 10px rgba(0,0,0,0.05);
  position: sticky;
  top: 0;
  z-index: 1000;
  width: 100%;
}

.navbar .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 70px;
}

.navbar-brand {
  font-size: 1.5rem;
  font-weight: bold;
  color: var(--primary-color);
  display: flex;
  align-items: center;
}

.navbar-brand span {
  color: var(--accent-color);
}

.nav-links {
  display: flex;
  gap: 2rem;
  list-style: none;
}

.nav-links li {
  display: flex;
  align-items: center;
}

.nav-links a {
  font-weight: 500;
  color: var(--text-color);
  height: 100%;
  display: flex;
  align-items: center;
}

.nav-links a:hover, .nav-links a.active {
  color: var(--primary-color);
}

.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
  color: var(--text-color);
}

/* Footer */
.footer {
  background-color: var(--accent-color);
  color: var(--bg-color);
  padding: 3rem 0;
  text-align: center;
}

.footer p {
  opacity: 0.8;
}

/* Hero Section */
.hero {
  background: linear-gradient(135deg, var(--light-gray) 0%, var(--bg-color) 100%);
  min-height: 80vh;
  display: flex;
  align-items: center;
}

.hero-content {
  max-width: 800px;
}

.hero-title {
  font-size: 3.5rem;
  line-height: 1.2;
  margin-bottom: 1.5rem;
}

.hero-title span {
  color: var(--primary-color);
}

.hero-subtitle {
  font-size: 1.25rem;
  color: #444;
  margin-bottom: 2rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.8rem 2rem;
  border-radius: 4px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
  border: none;
  text-align: center;
}

.btn-primary {
  background-color: var(--primary-color);
  color: var(--bg-color) !important;
}

.btn-primary:hover {
  background-color: #c92a38;
  color: var(--bg-color);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(230, 57, 70, 0.3);
}

.btn-secondary {
  background-color: transparent;
  color: var(--accent-color) !important;
  border: 2px solid var(--accent-color);
  margin-left: 1rem;
}

.btn-secondary:hover {
  background-color: var(--accent-color);
  color: var(--bg-color) !important;
  transform: translateY(-2px);
}

/* Skills Cards */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  margin-top: 2rem;
}

.skill-card {
  background: var(--bg-color);
  padding: 2.5rem;
  border-radius: 8px;
  box-shadow: 0 4px 20px rgba(0,0,0,0.05);
  border-top: 4px solid var(--primary-color);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.skill-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 25px rgba(0,0,0,0.1);
}

.skill-card.blue-border { border-top-color: var(--accent-color); }
.skill-card.dark-border { border-top-color: var(--text-color); }
.skill-card.gray-border { border-top-color: #8d99ae; }

.skill-title {
  font-size: 1.25rem;
  margin-bottom: 1rem;
  color: var(--accent-color);
}

.skill-list {
  list-style: none;
}

.skill-list li {
  margin-bottom: 0.5rem;
  position: relative;
  padding-left: 1.5rem;
}

.skill-list li::before {
  content: '→';
  position: absolute;
  left: 0;
  color: var(--primary-color);
}

/* Form Styles for Contact */
.contact-form {
  max-width: 600px;
  margin: 0 auto;
  background: var(--light-gray);
  padding: 2.5rem;
  border-radius: 8px;
}

.form-group {
  margin-bottom: 1.5rem;
}

.form-group label {
  display: block;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 0.75rem;
  border: 1px solid #ccc;
  border-radius: 4px;
  font-family: var(--font-family);
}

.form-group textarea {
  resize: vertical;
  min-height: 120px;
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 2px rgba(230, 57, 70, 0.2);
}

/* Responsive */
@media (max-width: 768px) {
  .nav-links {
    display: none;
    position: absolute;
    top: 70px;
    left: 0;
    width: 100%;
    background: var(--bg-color);
    flex-direction: column;
    padding: 2rem;
    text-align: center;
    box-shadow: 0 5px 10px rgba(0,0,0,0.1);
  }
  
  .nav-links.active {
    display: flex;
  }
  
  .mobile-menu-btn {
    display: block;
  }
  
  .btn-secondary {
    margin-left: 0;
    margin-top: 1rem;
  }
  
  .btn {
    display: flex;
    width: 100%;
  }

  .hero-title {
    font-size: 2.5rem;
  }
}