:root {
  --bg: #0f1419;
  --bg-alt: #1a2332;
  --card: #1e2a3a;
  --text: #e8edf4;
  --muted: #94a3b8;
  --accent: #3b82f6;
  --accent-hover: #2563eb;
  --border: rgba(148, 163, 184, 0.15);
  --radius: 14px;
  --shadow: 0 20px 50px rgba(0, 0, 0, 0.35);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Inter", system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}

a {
  color: var(--accent);
  text-decoration: none;
}

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

.container {
  width: min(1100px, calc(100% - 2rem));
  margin: 0 auto;
}

.header {
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(12px);
  background: rgba(15, 20, 25, 0.85);
  border-bottom: 1px solid var(--border);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 68px;
  gap: 1rem;
}

.nav-right {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.lang-switch {
  display: flex;
  border: 1px solid var(--border);
  border-radius: 999px;
  overflow: hidden;
}

.lang-btn {
  padding: 0.35rem 0.75rem;
  border: none;
  background: transparent;
  color: var(--muted);
  font-weight: 600;
  font-size: 0.8rem;
  cursor: pointer;
  font-family: inherit;
}

.lang-btn.active {
  background: var(--accent);
  color: #fff;
}

.lang-btn:hover:not(.active) {
  color: var(--text);
}

.logo {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text);
}

.nav-links {
  display: flex;
  gap: 1.5rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-links a {
  color: var(--muted);
  font-weight: 500;
  font-size: 0.95rem;
}

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

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.25rem;
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text);
  transition: transform 0.2s, opacity 0.2s;
}

.hero {
  padding: 5rem 0 4rem;
  background:
    radial-gradient(circle at top right, rgba(59, 130, 246, 0.18), transparent 40%),
    var(--bg);
}

.hero-inner {
  max-width: 720px;
}

.hero-label {
  color: var(--accent);
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-size: 0.85rem;
  margin: 0 0 1rem;
}

.hero h1 {
  font-size: clamp(2.4rem, 6vw, 3.8rem);
  line-height: 1.1;
  margin: 0 0 1.25rem;
}

.hero h1 .accent {
  color: var(--accent);
}

.hero-text {
  font-size: 1.125rem;
  color: var(--muted);
  margin: 0 0 2rem;
  max-width: 560px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.hero-location {
  color: var(--muted);
  margin: 0;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.85rem 1.4rem;
  border-radius: 999px;
  font-weight: 600;
  transition: background 0.2s, color 0.2s, border-color 0.2s;
}

.btn-primary {
  background: var(--accent);
  color: #fff;
}

.btn-primary:hover {
  background: var(--accent-hover);
  color: #fff;
}

.btn-outline {
  border: 1px solid var(--border);
  color: var(--text);
}

.btn-outline:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.section {
  padding: 4.5rem 0;
}

.section-alt {
  background: var(--bg-alt);
}

.section-title {
  font-size: clamp(1.8rem, 4vw, 2.4rem);
  margin: 0 0 1rem;
}

.section-subtitle {
  color: var(--muted);
  margin: -0.5rem 0 2rem;
}

.section-text {
  color: var(--muted);
  max-width: 720px;
  margin: 0;
  font-size: 1.05rem;
}

.skills-grid,
.projects-grid {
  display: grid;
  gap: 1.25rem;
}

.skills-grid {
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  margin-top: 2rem;
}

.skill-card,
.project-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  box-shadow: var(--shadow);
}

.skill-card h3,
.project-card h3 {
  margin: 0 0 0.5rem;
}

.skill-card p,
.project-card p {
  margin: 0;
  color: var(--muted);
}

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

.project-badge {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--accent);
  margin-bottom: 0.75rem;
}

.project-badge.badge-active {
  color: #34d399;
}

.project-badge.badge-dev {
  color: #fbbf24;
}

.projects-group-title {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--muted);
  margin: 2rem 0 0.75rem;
}

.projects-group-title:first-of-type {
  margin-top: 1rem;
}

.project-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin: 1rem 0;
}

.project-tags span {
  font-size: 0.8rem;
  padding: 0.25rem 0.65rem;
  border-radius: 999px;
  background: rgba(59, 130, 246, 0.12);
  color: #93c5fd;
}

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

.project-links a {
  font-weight: 600;
}

.projects-more {
  margin-top: 2rem;
  color: var(--muted);
}

.contact-list {
  list-style: none;
  padding: 0;
  margin: 2rem 0 0;
  display: grid;
  gap: 1rem;
  max-width: 420px;
}

.contact-list li {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem 1.25rem;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.contact-list span {
  color: var(--muted);
}

.footer {
  padding: 1.5rem 0 2rem;
  border-top: 1px solid var(--border);
}

.footer p {
  margin: 0;
  color: var(--muted);
  text-align: center;
  font-size: 0.9rem;
}

@media (max-width: 768px) {
  .nav-right {
    position: relative;
  }

  .nav-toggle {
    display: flex;
  }

  .nav-links {
    position: absolute;
    top: 68px;
    left: 0;
    right: 0;
    flex-direction: column;
    gap: 0;
    background: rgba(15, 20, 25, 0.98);
    border-bottom: 1px solid var(--border);
    padding: 0.5rem 1rem 1rem;
    display: none;
  }

  .nav-links.open {
    display: flex;
  }

  .nav-links li {
    padding: 0.65rem 0;
    border-bottom: 1px solid var(--border);
  }

  .nav-links li:last-child {
    border-bottom: none;
  }

  .nav-toggle.open span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
  }

  .nav-toggle.open span:nth-child(2) {
    opacity: 0;
  }

  .nav-toggle.open span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
  }

  .hero {
    padding-top: 3.5rem;
  }

  .contact-list li {
    flex-direction: column;
    align-items: flex-start;
  }
}