/* Design System & Variables */
:root {
  --bg-color: #0d0d11;
  --card-bg: rgba(255, 255, 255, 0.05);
  --text-primary: #ffffff;
  --text-secondary: #a1a1aa;
  --accent-color: #6366f1; /* Indigo */
  --accent-glow: rgba(99, 102, 241, 0.5);
  --gradient-primary: linear-gradient(135deg, #6366f1 0%, #a855f7 100%);

  --font-main:
    "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica,
    Arial, sans-serif;

  --spacing-sm: 1rem;
  --spacing-md: 2rem;
  --spacing-lg: 4rem;
  --spacing-xl: 8rem;

  --border-radius: 12px;
  --nav-height: 70px;
}

/* Reset & Base Styles */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  background-color: var(--bg-color);
  color: var(--text-primary);
  font-family: var(--font-main);
  line-height: 1.6;
  overflow-x: hidden;
}

a {
  text-decoration: none;
  color: inherit;
  transition: color 0.3s ease;
}

ul {
  list-style: none;
}

section {
  padding: var(--spacing-xl) var(--spacing-md);
  max-width: 1200px;
  margin: 0 auto;
}

/* Typography */
h1,
h2,
h3 {
  line-height: 1.2;
  margin-bottom: var(--spacing-sm);
}

h1 {
  font-size: clamp(2.5rem, 5vw, 4.5rem);
  font-weight: 800;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  margin-bottom: var(--spacing-md);
}

h2 {
  font-size: 2.5rem;
  margin-bottom: var(--spacing-lg);
  text-align: center;
}

h3 {
  font-size: 1.5rem;
  margin-bottom: 0.5rem;
}

p {
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
  font-size: 1.1rem;
}

/* Navigation */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--nav-height);
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0 var(--spacing-md);
  background: rgba(13, 13, 17, 0.8);
  backdrop-filter: blur(12px);
  z-index: 1000;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.logo {
  display: flex;
  align-items: center;
}

.logo-img {
  height: 40px;
  width: auto;
  border-radius: 4px; /* Slight rounding to match design */
}

.nav-links {
  display: flex;
  gap: var(--spacing-md);
}

.nav-links a {
  font-size: 0.95rem;
  font-weight: 500;
  opacity: 0.8;
}

.nav-links a:hover {
  opacity: 1;
  color: var(--accent-color);
}

/* Hero Section */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  position: relative;
  padding-top: var(--nav-height);
}

.hero-content {
  max-width: 800px;
  z-index: 1;
}

.hero-buttons {
  display: flex;
  gap: 1rem;
  justify-content: center;
  margin-top: var(--spacing-md);
}

.btn {
  padding: 12px 30px;
  border-radius: 50px;
  font-weight: 600;
  cursor: pointer;
  transition:
    transform 0.2s ease,
    box-shadow 0.2s ease;
}

.btn-primary {
  background: var(--gradient-primary);
  color: white;
  box-shadow: 0 4px 20px var(--accent-glow);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px var(--accent-glow);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.15);
}

/* About Section */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-lg);
  align-items: center;
}

.skills-list {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

.skill-tag {
  background: var(--card-bg);
  padding: 8px 16px;
  border-radius: 20px;
  font-size: 0.9rem;
  color: var(--accent-color);
  border: 1px solid rgba(99, 102, 241, 0.2);
}

/* Projects Section */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-md);
}

.project-card {
  background: var(--card-bg);
  border-radius: var(--border-radius);
  padding: var(--spacing-md);
  border: 1px solid rgba(255, 255, 255, 0.05);
  transition:
    transform 0.3s ease,
    border-color 0.3s ease;
}

.project-card:hover {
  transform: translateY(-5px);
  border-color: var(--accent-color);
}

.project-links {
  margin-top: 1.5rem;
  display: flex;
  gap: 1rem;
}

.link-text {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--accent-color);
  display: flex;
  align-items: center;
  gap: 5px;
}

/* Contact Section */
.contact-container {
  background: var(--card-bg);
  padding: var(--spacing-lg);
  border-radius: var(--border-radius);
  text-align: center;
  max-width: 600px;
  margin: 0 auto;
  border: 1px solid rgba(255, 255, 255, 0.05);
}

.social-links {
  display: flex;
  justify-content: center;
  gap: 2rem;
  margin-top: 2rem;
  font-size: 1.2rem;
}

/* Footer */
footer {
  padding: var(--spacing-md);
  text-align: center;
  color: var(--text-secondary);
  font-size: 0.9rem;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  margin-top: var(--spacing-xl);
}

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

  .nav-links {
    display: none; /* Simple mobile hide for MVP */
  }

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

  section {
    padding: var(--spacing-lg) var(--spacing-sm);
  }
}

/* Utilities */
.hidden-section {
  display: none !important;
}