:root {
  --bg: #070a12;
  --bg-alt: #0c1120;
  --surface: #10162a;
  --surface-border: rgba(148, 163, 184, 0.14);
  --text: #e7ebf5;
  --text-muted: #93a0bd;
  --accent: #38e0d8;
  --accent-2: #a78bfa;
  --gradient: linear-gradient(135deg, var(--accent), var(--accent-2));
  --radius: 16px;
  --container: 1120px;
  --font: "Segoe UI", "Inter", -apple-system, BlinkMacSystemFont, Roboto, Helvetica, Arial, sans-serif;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

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

h1, h2, h3, h4 { line-height: 1.2; margin: 0 0 0.5em; }

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(14px);
  background: rgba(7, 10, 18, 0.72);
  border-bottom: 1px solid var(--surface-border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  letter-spacing: 0.2px;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: var(--gradient);
  color: #060810;
  font-size: 0.85rem;
  font-weight: 800;
}

.brand-name { font-size: 1rem; }

.main-nav {
  display: flex;
  gap: 28px;
}

.main-nav a {
  font-size: 0.92rem;
  color: var(--text-muted);
  transition: color 0.2s ease;
}

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

.header-actions {
  display: flex;
  align-items: center;
  gap: 16px;
}

.lang-switch {
  display: flex;
  border: 1px solid var(--surface-border);
  border-radius: 999px;
  padding: 3px;
  gap: 2px;
}

.lang-btn {
  border: none;
  background: transparent;
  color: var(--text-muted);
  font: inherit;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.4px;
  padding: 6px 12px;
  border-radius: 999px;
  cursor: pointer;
  transition: background 0.2s ease, color 0.2s ease;
}

.lang-btn.active {
  background: var(--gradient);
  color: #060810;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 36px;
  height: 36px;
  background: none;
  border: 1px solid var(--surface-border);
  border-radius: 8px;
  cursor: pointer;
}

.nav-toggle span {
  display: block;
  width: 16px;
  height: 2px;
  margin: 0 auto;
  background: var(--text);
  border-radius: 2px;
}

/* Hero */
.hero {
  position: relative;
  padding: 120px 0 90px;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: -20% -10%;
  background:
    radial-gradient(600px 400px at 15% 10%, rgba(56, 224, 216, 0.16), transparent 60%),
    radial-gradient(560px 420px at 85% 30%, rgba(167, 139, 250, 0.16), transparent 60%);
  pointer-events: none;
  z-index: 0;
}

.hero-inner {
  position: relative;
  z-index: 1;
  max-width: 780px;
}

.eyebrow {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 1.6px;
  text-transform: uppercase;
  color: var(--accent);
  margin: 0 0 14px;
}

.hero h1 {
  font-size: clamp(2.1rem, 4.4vw, 3.4rem);
  margin-bottom: 20px;
  background: linear-gradient(135deg, #f2f5fb, #c7cfe4);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero-subtitle {
  font-size: 1.08rem;
  color: var(--text-muted);
  max-width: 620px;
  margin-bottom: 34px;
}

.hero-cta {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 56px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 13px 26px;
  border-radius: 10px;
  font-weight: 600;
  font-size: 0.95rem;
  transition: transform 0.15s ease, box-shadow 0.15s ease, background 0.15s ease;
}

.btn-primary {
  background: var(--gradient);
  color: #060810;
}

.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 10px 30px rgba(56, 224, 216, 0.18); }

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

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

.hero-stats {
  display: flex;
  gap: 48px;
  list-style: none;
  padding: 0;
  margin: 0;
  flex-wrap: wrap;
}

.stat-num {
  display: block;
  font-size: 1.9rem;
  font-weight: 800;
  background: var(--gradient);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.stat-label {
  display: block;
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-top: 4px;
}

/* Sections */
.section { padding: 96px 0; }
.section-alt { background: var(--bg-alt); }

.section-heading { max-width: 640px; margin-bottom: 48px; }
.section-heading.center { max-width: 640px; margin-left: auto; margin-right: auto; text-align: center; }

.section-heading h2 { font-size: clamp(1.6rem, 3vw, 2.2rem); }

.section-lead { color: var(--text-muted); font-size: 1.02rem; margin-top: 12px; }

/* About */
.about-grid {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 56px;
  align-items: start;
}

.about-body p { color: var(--text-muted); margin: 0 0 18px; }

.about-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 24px;
}

.about-tags span {
  border: 1px solid var(--surface-border);
  background: var(--surface);
  padding: 8px 14px;
  border-radius: 999px;
  font-size: 0.85rem;
}

/* Cards / Services */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 24px;
}

.card {
  background: var(--surface);
  border: 1px solid var(--surface-border);
  border-radius: var(--radius);
  padding: 28px 26px;
  transition: transform 0.2s ease, border-color 0.2s ease;
}

.card:hover { transform: translateY(-4px); border-color: rgba(56, 224, 216, 0.35); }

.card-icon {
  width: 46px;
  height: 46px;
  border-radius: 12px;
  display: grid;
  place-items: center;
  background: linear-gradient(135deg, rgba(56, 224, 216, 0.14), rgba(167, 139, 250, 0.14));
  color: var(--accent);
  margin-bottom: 18px;
}

.card-icon svg { width: 22px; height: 22px; }

.card h3 { font-size: 1.08rem; margin-bottom: 10px; }
.card p { color: var(--text-muted); font-size: 0.92rem; margin: 0; }

/* Skills */
.skills-groups {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 32px;
}

.skill-group h4 {
  font-size: 0.95rem;
  color: var(--text);
  margin-bottom: 16px;
}

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.tag-list span {
  font-size: 0.82rem;
  color: var(--text-muted);
  border: 1px solid var(--surface-border);
  border-radius: 8px;
  padding: 7px 12px;
  background: var(--surface);
}

/* Process */
.process-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(190px, 1fr));
  gap: 24px;
}

.process-steps li {
  border-top: 2px solid transparent;
  border-image: var(--gradient);
  border-image-slice: 1;
  padding-top: 18px;
}

.step-num {
  display: block;
  font-size: 0.85rem;
  font-weight: 800;
  color: var(--accent);
  margin-bottom: 10px;
}

.process-steps h4 { font-size: 1rem; margin-bottom: 8px; }
.process-steps p { color: var(--text-muted); font-size: 0.88rem; margin: 0; }

/* Contact */
.contact-inner { max-width: 780px; }

.contact-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 20px;
}

.contact-card {
  display: flex;
  flex-direction: column;
  gap: 6px;
  background: var(--surface);
  border: 1px solid var(--surface-border);
  border-radius: var(--radius);
  padding: 26px;
  transition: transform 0.2s ease, border-color 0.2s ease;
}

.contact-card:hover { transform: translateY(-4px); border-color: rgba(167, 139, 250, 0.4); }

.contact-card .card-icon { margin-bottom: 12px; }

.contact-label {
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--text-muted);
}

.contact-value {
  font-size: 1.05rem;
  font-weight: 600;
}

/* Footer */
.site-footer {
  border-top: 1px solid var(--surface-border);
  padding: 28px 0;
}

.footer-inner {
  font-size: 0.85rem;
  color: var(--text-muted);
  text-align: center;
}

/* Responsive */
@media (max-width: 900px) {
  .about-grid { grid-template-columns: 1fr; gap: 28px; }
}

@media (max-width: 760px) {
  .main-nav {
    position: absolute;
    top: 72px;
    left: 0;
    right: 0;
    background: var(--bg-alt);
    border-bottom: 1px solid var(--surface-border);
    flex-direction: column;
    padding: 16px 24px;
    gap: 14px;
    display: none;
  }
  .main-nav.open { display: flex; }
  .nav-toggle { display: flex; }
  .hero { padding: 88px 0 64px; }
  .hero-stats { gap: 24px 32px; }
  .hero-stats li { flex: 0 0 calc(50% - 16px); }
}