/* ===== Reset & Base ===== */
*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --color-bg: #0f0f0f;
  --color-surface: #1a1a1a;
  --color-text: #e8e8e8;
  --color-text-muted: #999;
  --color-accent: #6c63ff;
  --color-accent-hover: #5a52d5;
  --color-border: #2a2a2a;
  --font-sans: 'Segoe UI', system-ui, -apple-system, sans-serif;
  --font-mono: 'SF Mono', 'Fira Code', monospace;
  --max-width: 1000px;
}

html {
  scroll-behavior: smooth;
}

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

/* ===== Navbar ===== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.25rem 2rem;
  background: rgba(15, 15, 15, 0.85);
  backdrop-filter: blur(12px);
  z-index: 100;
  border-bottom: 1px solid var(--color-border);
}

.nav-logo {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-accent);
  text-decoration: none;
  letter-spacing: 0.05em;
}

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

.nav-links a {
  color: var(--color-text-muted);
  text-decoration: none;
  font-size: 0.9rem;
  letter-spacing: 0.03em;
  transition: color 0.2s;
}

.nav-links a:hover {
  color: var(--color-text);
}

/* ===== Hero ===== */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 2rem;
}

.hero-greeting {
  font-size: 1.1rem;
  color: var(--color-accent);
  margin-bottom: 0.5rem;
  font-family: var(--font-mono);
}

.hero-name {
  font-size: clamp(2.5rem, 8vw, 5rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.1;
  margin-bottom: 1rem;
}

.hero-tagline {
  font-size: 1.15rem;
  color: var(--color-text-muted);
  margin-bottom: 2.5rem;
  letter-spacing: 0.05em;
}

.hero-cta {
  display: inline-block;
  padding: 0.75rem 2rem;
  border: 1px solid var(--color-accent);
  color: var(--color-accent);
  text-decoration: none;
  font-size: 0.9rem;
  border-radius: 4px;
  transition: background 0.2s, color 0.2s;
}

.hero-cta:hover {
  background: var(--color-accent);
  color: #fff;
}

/* ===== Sections ===== */
.section {
  padding: 6rem 2rem;
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
}

.section-title {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 2.5rem;
  position: relative;
  display: inline-block;
}

.section-title::after {
  content: '';
  position: absolute;
  bottom: -8px;
  left: 0;
  width: 40px;
  height: 3px;
  background: var(--color-accent);
  border-radius: 2px;
}

/* ===== About ===== */
.about-content p {
  font-size: 1.05rem;
  color: var(--color-text-muted);
  max-width: 640px;
  margin-bottom: 1.25rem;
  line-height: 1.8;
}

/* ===== Projects ===== */
.projects {
  background: var(--color-surface);
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
}

.project-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  padding: 2rem;
  transition: border-color 0.2s, transform 0.2s;
}

.project-card:hover {
  border-color: var(--color-accent);
  transform: translateY(-4px);
}

.project-icon {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--color-accent);
  margin-bottom: 1rem;
}

.project-card h3 {
  font-size: 1.15rem;
  margin-bottom: 0.75rem;
}

.project-card p {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  margin-bottom: 1.25rem;
  line-height: 1.6;
}

.project-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.tag {
  font-size: 0.75rem;
  padding: 0.25rem 0.6rem;
  background: rgba(108, 99, 255, 0.1);
  color: var(--color-accent);
  border-radius: 4px;
  font-family: var(--font-mono);
}

/* ===== Contact ===== */
.contact {
  text-align: center;
}

.contact .section-title::after {
  left: 50%;
  transform: translateX(-50%);
}

.contact-text {
  font-size: 1.05rem;
  color: var(--color-text-muted);
  max-width: 500px;
  margin: 0 auto 2.5rem;
  line-height: 1.8;
}

.contact-links {
  display: flex;
  justify-content: center;
  gap: 1rem;
}

.contact-link {
  padding: 0.65rem 1.75rem;
  border: 1px solid var(--color-border);
  color: var(--color-text);
  text-decoration: none;
  font-size: 0.9rem;
  border-radius: 4px;
  transition: border-color 0.2s, color 0.2s;
}

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

/* ===== Footer ===== */
.footer {
  text-align: center;
  padding: 2rem;
  border-top: 1px solid var(--color-border);
  color: var(--color-text-muted);
  font-size: 0.8rem;
}

/* ===== Animations ===== */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ===== Responsive ===== */
@media (max-width: 640px) {
  .navbar {
    padding: 1rem 1.25rem;
  }

  .nav-links {
    gap: 1.25rem;
  }

  .nav-links a {
    font-size: 0.8rem;
  }

  .section {
    padding: 4rem 1.25rem;
  }

  .contact-links {
    flex-direction: column;
    align-items: center;
  }

  .contact-link {
    width: 100%;
    max-width: 200px;
    text-align: center;
  }
}