* {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
}
:root {
  --bg: #f8fafc;
  --text: #0f172a;
  --card: #ffffff;
  --muted: #475569;
  --accent: #2563eb;
  --accent-contrast: #ffffff;
  --border: #e2e8f0;
  --shadow: 0 10px 20px rgba(2, 6, 23, 0.06);
}
:root[data-theme="dark"] {
  --bg: #0b1220;
  --text: #e5e7eb;
  --card: #0f172a;
  --muted: #9ca3af;
  --accent: #60a5fa;
  --accent-contrast: #0b1220;
  --border: #1f2937;
  --shadow: 0 10px 20px rgba(0, 0, 0, 0.5);
}
body {
  margin: 0;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto,
    Helvetica, Arial, "Apple Color Emoji", "Segoe UI Emoji";
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}
.container {
  width: min(1100px, 92%);
  margin: 0 auto;
}
a {
  color: var(--accent);
  text-decoration: none;
}
a:hover {
  text-decoration: underline;
}
header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.8);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
}
:root[data-theme="dark"] header {
  background: rgba(15, 23, 42, 0.8);
}
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 0;
}
.logo {
  font-weight: 800;
  letter-spacing: 0.3px;
}
nav ul {
  display: flex;
  gap: 16px;
  list-style: none;
  padding: 0;
  margin: 0;
}
nav a {
  color: var(--text);
  text-decoration: none;
  padding: 6px 10px;
  border-radius: 10px;
}
nav a.active,
nav a:hover {
  background: var(--border);
  text-decoration: none;
}
:root[data-theme="dark"] nav a:hover {
  background: #111827;
}
.theme-toggle {
  border: 1px solid var(--border);
  background: var(--card);
  color: var(--text);
  border-radius: 999px;
  padding: 6px 12px;
  cursor: pointer;
  box-shadow: var(--shadow);
}
main {
  padding: 24px 0 64px;
}
footer {
  border-top: 1px solid var(--border);
  padding: 28px 0;
  margin-top: 40px;
  color: var(--muted);
}
.grid {
  display: grid;
  gap: 18px;
}
.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 18px;
  box-shadow: var(--shadow);
}
.btn {
  display: inline-block;
  padding: 10px 14px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: var(--card);
  color: var(--text);
  text-decoration: none;
  font-weight: 600;
}
.btn.primary {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--accent-contrast);
}
.badge {
  display: inline-block;
  padding: 4px 10px;
  border-radius: 999px;
  border: 1px solid var(--border);
  font-size: 12px;
  margin-right: 6px;
  color: var(--muted);
}
img {
  max-width: 100%;
  border-radius: 12px;
  display: block;
}
code,
kbd,
pre {
  background: var(--card);
  border: 1px solid var(--border);
  padding: 2px 6px;
  border-radius: 6px;
}
hr {
  border: none;
  border-top: 1px solid var(--border);
  margin: 24px 0;
}
@media (min-width: 720px) {
  .grid.cols-2 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .grid.cols-3 {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}
@media (max-width: 719px) {
  header .nav {
    flex-wrap: wrap;
    gap: 10px;
  }
  nav ul {
    flex-wrap: wrap;
    justify-content: center;
    width: 100%;
  }
  .hero {
    grid-template-columns: 1fr;
    text-align: center;
  }
  .hero-actions {
    justify-content: center;
  }
  .profile {
    grid-template-columns: 1fr;
  }
  .project-hero {
    grid-template-columns: 1fr;
  }
  .resume-grid {
    grid-template-columns: 1fr;
  }
  .services {
    grid-template-columns: 1fr;
  }
  .pricing {
    grid-template-columns: 1fr;
  }
  .grid.cols-2 {
    grid-template-columns: 1fr;
  }
  .grid.cols-3 {
    grid-template-columns: 1fr;
  }
}
@media (max-width: 900px) {
  .nav {
    gap: 10px;
  }
  nav ul {
    flex-wrap: wrap;
    gap: 8px 12px;
  }
  .hero-actions {
    flex-wrap: wrap;
  }
}
@media (max-width: 720px) {
  body {
    font-size: 16px;
  }
  header .nav {
    flex-wrap: wrap;
  }
  nav ul {
    width: 100%;
    margin-top: 8px;
    padding: 8px 0;
    border-top: 1px solid var(--border);
  }
  .container {
    width: min(100%, 92%);
  }
  .card {
    padding: 14px;
    border-radius: 14px;
  }
  .btn {
    padding: 9px 12px;
    border-radius: 10px;
  }
  img {
    border-radius: 10px;
  }
  h1 {
    font-size: clamp(24px, 6vw, 36px);
  }
  h2 {
    font-size: clamp(20px, 4.5vw, 28px);
  }
  h3 {
    font-size: clamp(18px, 4vw, 22px);
  }
  .grid {
    gap: 14px;
  }
}
.hamburger {
  display: none;
  border: 1px solid var(--border);
  background: var(--card);
  color: var(--text);
  border-radius: 12px;
  padding: 8px 10px;
  cursor: pointer;
  box-shadow: var(--shadow);
  font-size: 18px;
  line-height: 1;
}
.hamburger[aria-expanded="true"] {
  background: var(--border);
}
.mobile-menu {
  display: none;
  position: fixed;
  top: 58px;
  left: 0;
  right: 0;
  background: var(--card);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  box-shadow: var(--shadow);
  z-index: 40;
}
.mobile-menu.open {
  display: block;
}
.mobile-menu ul {
  list-style: none;
  margin: 0;
  padding: 10px;
  display: grid;
  gap: 6px;
}
.mobile-menu a {
  display: block;
  padding: 12px 14px;
  border-radius: 12px;
  color: var(--text);
  text-decoration: none;
  border: 1px solid var(--border);
  background: var(--card);
}
.mobile-menu a:hover {
  background: var(--border);
  text-decoration: none;
}
@media (max-width: 900px) {
  .hamburger {
    display: inline-flex;
    align-items: center;
    justify-content: center;
  }
  header .nav {
    align-items: center;
  }
  header nav {
    display: none;
  }
  .theme-toggle {
    margin-left: 8px;
  }
}