:root {
  --bg: #0b1020;
  --bg-alt: #141a30;
  --card-bg: #1b2340;
  --accent: #1173d4;
  --accent-soft: rgba(17, 115, 212, 0.18);
  --text: #f5f7ff;
  --text-muted: #a5b0d5;
  --border-subtle: #273055;
  --radius-lg: 16px;
  --radius-md: 10px;
  --shadow-soft: 0 18px 45px rgba(0, 0, 0, 0.45);
  --max-width: 1120px;
}

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

body {
  margin: 0;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: radial-gradient(circle at top left, #1a2440, #050814 55%, #020308);
  color: var(--text);
}

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

a:hover {
  text-decoration: underline;
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: linear-gradient(to bottom, rgba(5, 8, 20, 0.95), rgba(5, 8, 20, 0.82));
  backdrop-filter: blur(18px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.9rem 0;
}

.logo {
  font-weight: 700;
  letter-spacing: 0.08em;
  font-size: 0.95rem;
  text-transform: uppercase;
}

.main-nav {
  display: flex;
  gap: 1.25rem;
  font-size: 0.9rem;
}

.main-nav a {
  color: var(--text-muted);
  padding: 0.35rem 0.55rem;
  border-radius: 999px;
  transition: background 0.2s ease, color 0.2s ease;
}

.main-nav a:hover {
  color: var(--text);
  background: rgba(255, 255, 255, 0.06);
}

.hero {
  padding: 3.5rem 0 2.5rem;
}

.hero h1 {
  font-size: clamp(2.3rem, 3.4vw, 3rem);
  margin-bottom: 0.75rem;
}

.hero p {
  max-width: 32rem;
  color: var(--text-muted);
  line-height: 1.6;
}

.btn-primary {
  display: inline-block;
  margin-top: 1.5rem;
  padding: 0.7rem 1.8rem;
  border-radius: 999px;
  background: linear-gradient(135deg, #1173d4, #57b0ff);
  color: white;
  font-weight: 500;
  border: none;
  cursor: pointer;
  box-shadow: 0 12px 32px rgba(4, 112, 216, 0.45);
}

.btn-primary:hover {
  filter: brightness(1.04);
}

.highlights {
  padding: 1rem 0 3rem;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.5rem;
}

.card {
  background: radial-gradient(circle at top left, #26315a, #151b31);
  border-radius: var(--radius-lg);
  padding: 1.4rem 1.5rem 1.6rem;
  border: 1px solid var(--border-subtle);
  box-shadow: var(--shadow-soft);
}

.card h2 {
  margin-top: 0;
  margin-bottom: 0.4rem;
  font-size: 1.1rem;
}

.card p {
  margin: 0;
  color: var(--text-muted);
  line-height: 1.6;
}

.text-link {
  display: inline-block;
  margin-top: 0.7rem;
  font-size: 0.9rem;
}

.page-main {
  padding: 2.5rem 0 3rem;
}

.page-hero {
  padding-bottom: 1.5rem;
}

.page-hero h1 {
  margin-bottom: 0.5rem;
}

.page-hero p {
  color: var(--text-muted);
  max-width: 36rem;
}

.two-column {
  display: grid;
  grid-template-columns: minmax(0, 1.3fr) minmax(0, 1fr);
  gap: 2.2rem;
}

.two-column h2 {
  margin-top: 0;
}

.two-column ul {
  padding-left: 1.1rem;
  color: var(--text-muted);
}

.project-list .card + .card {
  margin-top: 1rem;
}

.contact-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.1fr);
  gap: 2.2rem;
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 0.8rem;
}

.contact-form label {
  display: flex;
  flex-direction: column;
  font-size: 0.9rem;
  gap: 0.35rem;
}

.contact-form input,
.contact-form textarea {
  background: rgba(5, 8, 20, 0.85);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-subtle);
  padding: 0.55rem 0.75rem;
  color: var(--text);
  font: inherit;
}

.contact-form input:focus,
.contact-form textarea:focus {
  outline: 1px solid var(--accent);
  box-shadow: 0 0 0 1px rgba(17, 115, 212, 0.5);
}

.form-note {
  font-size: 0.78rem;
  color: var(--text-muted);
}

.site-footer {
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  background: #050814;
  margin-top: 1rem;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  padding: 1.2rem 0 1.4rem;
  font-size: 0.85rem;
  color: var(--text-muted);
  gap: 1.5rem;
}

@media (max-width: 768px) {
  .header-inner {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.65rem;
  }

  .main-nav {
    flex-wrap: wrap;
  }

  .two-column,
  .contact-layout {
    grid-template-columns: 1fr;
  }

  .hero {
    padding-top: 2.4rem;
  }
}