/* ===== Variables ===== */
:root {
  --bg: #08080c;
  --bg-elevated: #0e0e14;
  --bg-card: #12121a;
  --text: #e8e8ed;
  --text-muted: #8b8b9a;
  --accent: #00d4aa;
  --accent-dim: rgba(0, 212, 170, 0.15);
  --accent-glow: rgba(0, 212, 170, 0.25);
  --border: rgba(255, 255, 255, 0.06);
  --radius: 16px;
  --radius-lg: 24px;
  --font-head: 'Syne', sans-serif;
  --font-body: 'DM Sans', sans-serif;
}

/* ===== Reset & Base ===== */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; height: auto; display: block; }

.container {
  width: 100%;
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ===== Header ===== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 20px 0;
  background: rgba(8, 8, 12, 0.8);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  transition: padding 0.2s ease;
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.logo {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 1.25rem;
  letter-spacing: -0.02em;
}
.logo-dot { color: var(--accent); }
.nav {
  display: flex;
  gap: 32px;
}
.nav a {
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--text-muted);
  transition: color 0.2s ease;
}
.nav a:hover { color: var(--accent); }
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 6px;
  padding: 8px;
  background: none;
  border: none;
  cursor: pointer;
  color: var(--text);
}
.nav-toggle span {
  width: 22px;
  height: 2px;
  background: currentColor;
  border-radius: 1px;
}

/* ===== Hero ===== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 120px 0 80px;
  overflow: hidden;
}
.hero-bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
}
.hero-gradient {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 50% at 50% -20%, var(--accent-dim), transparent),
    radial-gradient(ellipse 60% 40% at 100% 50%, rgba(0, 150, 200, 0.06), transparent),
    radial-gradient(ellipse 50% 30% at 0% 80%, rgba(0, 212, 170, 0.05), transparent);
}
.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.02) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(ellipse 70% 70% at 50% 50%, black, transparent);
}
.hero-inner { position: relative; z-index: 1; }
.hero-label {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  margin-bottom: 20px;
}
.hero-title {
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(2.5rem, 6vw, 4rem);
  line-height: 1.1;
  letter-spacing: -0.03em;
  margin: 0 0 24px;
  max-width: 14ch;
}
.hero-title .highlight {
  color: var(--accent);
  position: relative;
}
.hero-desc {
  font-size: 1.125rem;
  color: var(--text-muted);
  max-width: 520px;
  margin: 0 0 40px;
}
.hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 28px;
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 600;
  border-radius: 12px;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.btn-primary {
  background: var(--accent);
  color: var(--bg);
  border: none;
  box-shadow: 0 0 0 0 var(--accent-glow);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 32px var(--accent-glow);
}
.btn-ghost {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border);
}
.btn-ghost:hover {
  border-color: var(--accent);
  color: var(--accent);
}

/* ===== Sections ===== */
.section {
  padding: 100px 0;
}
.section-title {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: clamp(2rem, 4vw, 2.75rem);
  letter-spacing: -0.02em;
  margin: 0 0 12px;
}
.section-desc {
  font-size: 1.125rem;
  color: var(--text-muted);
  margin: 0 0 48px;
  max-width: 560px;
}

/* ===== Services ===== */
.services { background: var(--bg-elevated); }
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
}
.service-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
  transition: border-color 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
}
.service-card:hover {
  border-color: var(--accent-dim);
  transform: translateY(-4px);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
}
.service-icon {
  font-size: 2rem;
  margin-bottom: 16px;
}
.service-card h3 {
  font-family: var(--font-head);
  font-weight: 600;
  font-size: 1.25rem;
  margin: 0 0 8px;
}
.service-card p {
  font-size: 0.9375rem;
  color: var(--text-muted);
  margin: 0;
}

/* ===== Projects ===== */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 24px;
}
.project-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: border-color 0.2s ease, transform 0.2s ease;
}
.project-card:hover {
  border-color: var(--accent-dim);
  transform: translateY(-4px);
}
.project-visual {
  height: 180px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--accent-dim) 0%, rgba(0, 100, 180, 0.08) 100%);
}
.project-visual .project-name {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 1.5rem;
  color: var(--accent);
  letter-spacing: -0.02em;
}
.project-content {
  padding: 24px;
}
.project-content h3 {
  font-family: var(--font-head);
  font-weight: 600;
  font-size: 1.25rem;
  margin: 0 0 8px;
}
.project-content p {
  font-size: 0.9375rem;
  color: var(--text-muted);
  margin: 0;
}

/* ===== Contact ===== */
.contact { background: var(--bg-elevated); }
.contact-box {
  max-width: 560px;
  padding: 48px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
}
.contact-email {
  display: inline-block;
  font-family: var(--font-head);
  font-weight: 600;
  font-size: 1.5rem;
  color: var(--accent);
  margin-bottom: 12px;
  transition: opacity 0.2s ease;
}
.contact-email:hover { opacity: 0.85; }
.contact-note {
  font-size: 0.9375rem;
  color: var(--text-muted);
  margin: 0;
}

/* ===== Footer ===== */
.footer {
  padding: 32px 0;
  border-top: 1px solid var(--border);
}
.footer-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.footer-left {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 24px;
}
.footer-logo {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 1rem;
  color: var(--text-muted);
}
.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
}
.footer-links a {
  font-size: 0.875rem;
  color: var(--text-muted);
  transition: color 0.2s ease;
}
.footer-links a:hover {
  color: var(--accent);
}
.footer-copy {
  font-size: 0.875rem;
  color: var(--text-muted);
  margin: 0;
}

/* ===== Mobile ===== */
@media (max-width: 768px) {
  .nav { display: none; }
  .nav.is-open {
    display: flex;
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    flex-direction: column;
    gap: 0;
    padding: 24px;
    background: var(--bg-elevated);
    border-bottom: 1px solid var(--border);
  }
  .nav.is-open a {
    padding: 12px 0;
    border-bottom: 1px solid var(--border);
  }
  .nav.is-open a:last-of-type { border-bottom: none; }
  .nav-toggle { display: flex; }
  .hero { padding: 100px 0 60px; }
  .section { padding: 72px 0; }
  .hero-cta { flex-direction: column; }
  .btn { width: 100%; }
  .contact-box { padding: 32px 24px; }
  .contact-email { font-size: 1.25rem; }
}