:root {
  color-scheme: dark;
  --bg: #050816;
  --surface: #111827;
  --surface-strong: #1f2937;
  --text: #f8fafc;
  --muted: #94a3b8;
  --primary: #7c3aed;
  --primary-soft: rgba(124, 58, 237, 0.16);
  --border: rgba(148, 163, 184, 0.16);
  --shadow: 0 24px 80px rgba(15, 23, 42, 0.35);
  font-family: 'Inter', sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  background: radial-gradient(circle at top, rgba(124, 58, 237, 0.14), transparent 34%),
    linear-gradient(180deg, #070b18 0%, #04070f 100%);
  color: var(--text);
}

img {
  max-width: 100%;
  display: block;
}

a {
  color: inherit;
  text-decoration: none;
}

button,
input,
textarea {
  font: inherit;
}

.container {
  width: min(1120px, calc(100% - 2rem));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(5, 8, 22, 0.92);
  backdrop-filter: blur(18px);
  border-bottom: 1px solid rgba(148, 163, 184, 0.08);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem 0;
}

.logo {
  font-weight: 700;
  letter-spacing: -0.04em;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.nav-links a {
  color: var(--muted);
  transition: color 0.2s ease;
}

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

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

.hero {
  padding: 6rem 0 4rem;
}

.hero-content {
  display: grid;
  gap: 1.5rem;
}

.eyebrow {
  margin: 0;
  color: var(--primary);
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  font-size: 0.85rem;
}

.hero h1 {
  margin: 0;
  font-size: clamp(2.8rem, 5vw, 4.5rem);
  line-height: 0.95;
}

.hero-text {
  max-width: 700px;
  color: var(--muted);
  line-height: 1.85;
}

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

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.95rem 1.75rem;
  border-radius: 999px;
  font-weight: 600;
  transition: transform 0.2s ease, background-color 0.2s ease;
}

.button:hover {
  transform: translateY(-1px);
}

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

.button-secondary {
  background: rgba(255, 255, 255, 0.08);
  color: var(--text);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.section {
  padding: 5rem 0;
}

.section-alt {
  background: rgba(255, 255, 255, 0.02);
}

.section-label {
  margin: 0;
  color: var(--primary);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  font-size: 0.8rem;
}

.section h2 {
  margin: 1rem 0 1.5rem;
  font-size: clamp(2rem, 3vw, 2.8rem);
}

.section-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, 360px);
  gap: 2rem;
}

.about-cards {
  display: grid;
  gap: 1rem;
}

.card,
.project-card,
.contact-card {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border);
  border-radius: 24px;
  padding: 1.75rem;
  box-shadow: var(--shadow);
}

.card h3,
.project-card h3 {
  margin-top: 0;
}

.card ul,
.contact-list {
  list-style: none;
  padding: 0;
  margin: 1rem 0 0;
  display: grid;
  gap: 0.75rem;
}

.card li {
  color: var(--muted);
}

.project-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1.5rem;
}

.project-card p {
  color: var(--muted);
  line-height: 1.75;
}

.project-link {
  color: var(--primary);
  font-weight: 600;
}

.contact-section {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(0, 0.85fr);
  gap: 2rem;
  align-items: start;
}

.contact-list li a {
  color: var(--text);
}

.contact-card label {
  display: block;
  margin-bottom: 0.5rem;
  color: var(--muted);
  font-size: 0.95rem;
}

.contact-card input,
.contact-card textarea {
  width: 100%;
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: rgba(255, 255, 255, 0.04);
  color: var(--text);
  border-radius: 16px;
  padding: 0.95rem 1rem;
  margin-bottom: 1.25rem;
}

.contact-card textarea {
  resize: vertical;
}

.site-footer {
  padding: 2rem 0 3rem;
  text-align: center;
  color: var(--muted);
}

@media (max-width: 860px) {
  .section-grid,
  .project-grid,
  .contact-section {
    grid-template-columns: 1fr;
  }

  .hero {
    padding-top: 4rem;
  }
}

@media (max-width: 720px) {
  .header-inner {
    flex-wrap: wrap;
  }

  .nav-links {
    position: fixed;
    inset: 0 auto auto 0;
    flex-direction: column;
    padding: 5rem 1.5rem 1.5rem;
    gap: 1rem;
    width: min(260px, 90vw);
    max-width: 260px;
    height: 100vh;
    transform: translateX(100%);
    transition: transform 0.25s ease;
    background: rgba(5, 8, 22, 0.98);
    backdrop-filter: blur(24px);
    border-left: 1px solid rgba(148, 163, 184, 0.08);
  }

  .nav-links.open {
    transform: translateX(0);
  }

  .mobile-menu-toggle {
    display: inline-flex;
  }
}

@media (max-width: 520px) {
  .hero h1 {
    font-size: 2.8rem;
  }

  .button {
    width: 100%;
  }
}