:root {
  --bg: #0b1120;
  --text: #e5e7eb;
  --muted: #94a3b8;
  --brand: #38bdf8;
  --brand-2: #22c55e;
  --danger: #ef4444;
  --border: rgba(148, 163, 184, 0.2);
  --card: rgba(255, 255, 255, 0.05);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
  background:
    radial-gradient(circle at top left, rgba(56, 189, 248, 0.18), transparent 35%),
    radial-gradient(circle at top right, rgba(34, 197, 94, 0.12), transparent 30%),
    var(--bg);
  color: var(--text);
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: blur(14px);
  background: rgba(11, 17, 32, 0.78);
  border-bottom: 1px solid var(--border);
}

.nav {
  max-width: 1120px;
  margin: auto;
  padding: 18px 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-weight: 800;
  letter-spacing: -0.03em;
  font-size: 20px;
}

.nav-links {
  display: flex;
  gap: 22px;
  color: var(--muted);
  font-size: 14px;
  flex-wrap: wrap;
}

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

.hero {
  max-width: 1120px;
  margin: auto;
  padding: 88px 24px 64px;
  display: grid;
  grid-template-columns: 1.4fr 0.8fr;
  gap: 32px;
  align-items: center;
}

.badge {
  display: inline-flex;
  border: 1px solid rgba(56, 189, 248, 0.35);
  color: #bae6fd;
  background: rgba(56, 189, 248, 0.08);
  padding: 8px 12px;
  border-radius: 999px;
  font-size: 13px;
  margin-bottom: 18px;
}

.hero h1 {
  font-size: clamp(36px, 6vw, 64px);
  line-height: 1.02;
  letter-spacing: -0.06em;
  margin: 0 0 22px;
}

.hero p,
.text,
.resume-box p,
.card p {
  color: var(--muted);
  line-height: 1.7;
}

.hero-actions {
  display: flex;
  gap: 14px;
  margin-top: 28px;
  flex-wrap: wrap;
}

.btn {
  border: 0;
  border-radius: 12px;
  padding: 13px 18px;
  font-weight: 700;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: transform 0.2s ease, opacity 0.2s ease;
}

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

.btn:disabled {
  opacity: 0.65;
  cursor: not-allowed;
  transform: none;
}

.primary {
  background: linear-gradient(135deg, var(--brand), var(--brand-2));
  color: #06111f;
}

.secondary {
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.04);
  color: var(--text);
}

.hero-card,
.card,
.resume-box {
  border: 1px solid var(--border);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.07), rgba(255, 255, 255, 0.03));
  border-radius: 24px;
  box-shadow: 0 24px 80px rgba(0, 0, 0, 0.25);
}

.hero-card,
.card {
  padding: 24px;
}

.hero-card ul {
  color: var(--muted);
  line-height: 1.8;
  padding-left: 20px;
}

.section {
  max-width: 1120px;
  margin: auto;
  padding: 54px 24px;
}

.section-title span {
  color: var(--brand);
  font-weight: 700;
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 0.12em;
}

.section-title h2 {
  margin: 10px 0 22px;
  font-size: clamp(28px, 4vw, 42px);
  letter-spacing: -0.04em;
}

.grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

.card h3 {
  margin-top: 0;
}

.card-link {
  display: inline-block;
  margin-top: 12px;
  color: var(--brand);
  font-weight: 700;
  text-decoration: none;
}

.card-link:hover {
  text-decoration: underline;
}

.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.tags span {
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.04);
  padding: 10px 14px;
  border-radius: 999px;
  color: #cbd5e1;
}

.resume-box {
  display: grid;
  grid-template-columns: 1fr 0.9fr;
  gap: 32px;
  padding: 34px;
}

.form {
  display: grid;
  gap: 16px;
}

.form label {
  color: #cbd5e1;
  display: grid;
  gap: 8px;
  font-size: 14px;
}

.form input {
  width: 100%;
  padding: 14px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: rgba(2, 6, 23, 0.65);
  color: var(--text);
  outline: none;
}

.form input:focus {
  border-color: var(--brand);
}

#form-message {
  color: var(--brand-2);
  min-height: 18px;
}

.footer {
  border-top: 1px solid var(--border);
  color: var(--muted);
  text-align: center;
  padding: 28px;
  margin-top: 42px;
}

@media (max-width: 820px) {
  .hero,
  .resume-box,
  .grid {
    grid-template-columns: 1fr;
  }

  .nav {
    align-items: flex-start;
    gap: 12px;
    flex-direction: column;
  }

  .nav-links {
    gap: 14px;
  }

  .hero {
    padding-top: 56px;
  }
}