:root {
  --bg: #061018;
  --bg-2: #0b1c29;
  --panel: rgba(8, 24, 36, 0.76);
  --line: rgba(106, 210, 255, 0.24);
  --text: #daf4ff;
  --muted: #93b8c8;
  --accent: #6ad2ff;
  --accent-2: #8cffb9;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  font-family: "Space Grotesk", sans-serif;
  color: var(--text);
  background: radial-gradient(circle at 20% 0%, #103449 0%, var(--bg) 45%, #04070b 100%);
  scroll-behavior: smooth;
}

html[lang="en"] body {
  font-weight: 500;
}

html[lang="en"] h1,
html[lang="en"] h2,
html[lang="en"] h3,
html[lang="en"] .brand {
  font-weight: 700;
}

html[lang="en"] .site-nav a,
html[lang="en"] .btn,
html[lang="en"] .eyebrow {
  font-weight: 600;
}

body {
  min-height: 100vh;
  position: relative;
}

.bg-grid {
  position: fixed;
  inset: 0;
  background-image: linear-gradient(var(--line) 1px, transparent 1px), linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 36px 36px;
  opacity: 0.28;
  pointer-events: none;
  z-index: -1;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 24px;
  border-bottom: 1px solid var(--line);
  background: rgba(2, 10, 16, 0.86);
  backdrop-filter: blur(8px);
}

.brand {
  font-weight: 700;
  letter-spacing: 0.08em;
}

.header-tools {
  display: flex;
  align-items: center;
  gap: 12px;
}

.site-nav {
  display: flex;
  gap: 18px;
}

.site-nav a {
  color: var(--muted);
  text-decoration: none;
  font-family: "JetBrains Mono", monospace;
  font-size: 14px;
  display: inline-flex;
  align-items: center;
  height: 40px;
  padding: 0 10px;
  border: 1px solid transparent;
  border-radius: 8px;
}

.site-nav a:hover {
  color: var(--accent);
}

.site-nav a.is-active {
  color: var(--text);
  border-color: var(--line);
  background: rgba(106, 210, 255, 0.14);
}

.lang-switch {
  display: inline-flex;
  border: 1px solid var(--line);
  border-radius: 999px;
  overflow: hidden;
}

.lang-btn {
  border: 0;
  background: transparent;
  color: var(--muted);
  font-family: "JetBrains Mono", monospace;
  font-size: 12px;
  padding: 6px 10px;
  cursor: pointer;
}

.lang-btn.active {
  color: var(--bg);
  background: var(--accent-2);
}

.menu-btn {
  display: none;
  border: 1px solid var(--line);
  background: transparent;
  color: var(--text);
  font-size: 18px;
  padding: 4px 10px;
}

main {
  width: min(1080px, 92vw);
  margin: 0 auto;
  padding-bottom: 48px;
}

.section {
  padding: 72px 0;
}

.panel {
  border: 1px solid var(--line);
  background: var(--panel);
  border-radius: 16px;
  padding: 36px;
  margin-top: 18px;
}

.hero h1 {
  font-size: clamp(2.4rem, 5vw, 4rem);
  margin: 10px 0;
}

.hero h1 span {
  color: var(--accent);
}

.eyebrow {
  font-family: "JetBrains Mono", monospace;
  color: var(--accent-2);
  margin: 0;
}

.dot {
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 99px;
  background: var(--accent-2);
  box-shadow: 0 0 12px var(--accent-2);
  margin: 0 6px;
}

.summary,
.intro {
  color: var(--muted);
  max-width: 720px;
  line-height: 1.7;
}

.scroll-indicator {
  margin-top: 20px;
  color: var(--accent-2);
  letter-spacing: 0.16em;
  font-size: 12px;
  font-family: "JetBrains Mono", monospace;
}

.hero-actions {
  display: flex;
  gap: 14px;
  margin: 28px 0;
}

.btn {
  border: 1px solid var(--line);
  padding: 10px 16px;
  text-decoration: none;
  color: var(--text);
  font-family: "JetBrains Mono", monospace;
  font-size: 14px;
}

.btn-primary {
  background: linear-gradient(90deg, rgba(106, 210, 255, 0.2), rgba(140, 255, 185, 0.18));
}

.btn-ghost {
  background: transparent;
}

.stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin-top: 24px;
}

.stats article {
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 14px;
}

.stats h3 {
  margin: 0;
  color: var(--accent);
  font-size: 30px;
}

.stats p {
  margin: 6px 0 0;
  color: var(--muted);
}

h2 {
  margin: 6px 0 10px;
  font-size: clamp(1.6rem, 3.6vw, 2.4rem);
}

.chip-wrap {
  margin-top: 18px;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.chip-wrap span {
  padding: 8px 12px;
  border: 1px solid var(--line);
  border-radius: 100px;
  font-family: "JetBrains Mono", monospace;
  color: #b7f0ff;
  font-size: 13px;
}

.timeline article {
  padding: 16px;
  border-left: 2px solid var(--accent);
  margin: 12px 0;
  background: rgba(12, 35, 52, 0.55);
}

.timeline time {
  color: var(--accent-2);
  font-family: "JetBrains Mono", monospace;
  font-size: 13px;
}

.timeline h3 {
  margin: 8px 0;
}

.timeline p {
  margin: 0;
  color: var(--muted);
}

.cards {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.card {
  border: 1px solid var(--line);
  background: rgba(11, 30, 46, 0.68);
  padding: 16px;
  border-radius: 12px;
}

.card h3 {
  margin-top: 0;
}

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

.card small {
  color: var(--accent-2);
  font-family: "JetBrains Mono", monospace;
}

.cert-title {
  margin: 8px 0 18px;
  font-size: clamp(1.8rem, 4vw, 3rem);
}

.cert-layout {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 18px;
  align-items: start;
}

.cert-badge {
  border: 1px solid var(--line);
  border-radius: 14px;
  background: rgba(8, 22, 32, 0.72);
  padding: 14px;
}

.cert-badge img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 10px;
}

.cert-meta {
  margin: 0 0 10px;
  color: var(--text);
}

.cert-link {
  margin-top: 10px;
  display: inline-block;
}

.cert-skills {
  margin-top: 12px;
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.mini {
  padding-top: 28px;
  padding-bottom: 28px;
}

.terminal {
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 18px;
  background: rgba(2, 12, 18, 0.9);
  font-family: "JetBrains Mono", monospace;
  line-height: 1.7;
}

form {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

label {
  font-size: 14px;
  color: var(--muted);
  display: flex;
  flex-direction: column;
  gap: 8px;
}

input,
textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(9, 20, 30, 0.9);
  color: var(--text);
  padding: 10px;
  font: inherit;
}

.site-footer {
  text-align: center;
  color: var(--muted);
  padding: 26px 10px 36px;
  font-family: "JetBrains Mono", monospace;
}

.site-footer p {
  margin: 6px 0;
}

.reveal {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 900px) {
  .cards {
    grid-template-columns: 1fr;
  }

  .contact-grid {
    grid-template-columns: 1fr;
  }

  .cert-layout {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 760px) {
  .menu-btn {
    display: inline-block;
  }

  .site-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    padding: 10px 24px 16px;
    background: rgba(2, 10, 16, 0.96);
    border-bottom: 1px solid var(--line);
    display: none;
    flex-direction: column;
    gap: 12px;
  }

  .site-nav.open {
    display: flex;
  }

  .header-tools {
    gap: 8px;
  }

  .lang-btn {
    padding: 6px 8px;
  }

  .stats {
    grid-template-columns: 1fr;
  }

  .panel {
    padding: 24px;
  }

  .section {
    padding: 58px 0;
  }
}