:root {
  --bg: #080b12;
  --bg-alt: #0c111c;
  --surface: rgba(255, 255, 255, 0.045);
  --surface-strong: rgba(255, 255, 255, 0.075);
  --text: #f5f7fb;
  --muted: #a5adbc;
  --subtle: #6f7888;
  --line: rgba(255, 255, 255, 0.09);
  --accent: #8cb4ff;
  --accent-2: #75f0c0;
  --accent-soft: rgba(140, 180, 255, 0.12);
  --header-bg: rgba(8, 11, 18, 0.74);
  --shadow: 0 24px 80px rgba(0, 0, 0, 0.28);
  --radius: 22px;
  --container: 1180px;
}

html[data-theme="light"] {
  --bg: #f6f8fc;
  --bg-alt: #eef2f8;
  --surface: rgba(17, 24, 39, 0.045);
  --surface-strong: rgba(17, 24, 39, 0.075);
  --text: #111827;
  --muted: #5f6878;
  --subtle: #8790a0;
  --line: rgba(17, 24, 39, 0.1);
  --accent: #2759d7;
  --accent-2: #00866c;
  --accent-soft: rgba(39, 89, 215, 0.09);
  --header-bg: rgba(246, 248, 252, 0.76);
  --shadow: 0 24px 80px rgba(23, 35, 62, 0.1);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 90px;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "Inter", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

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

button,
a {
  -webkit-tap-highlight-color: transparent;
}

button {
  font: inherit;
}

::selection {
  background: var(--accent);
  color: var(--bg);
}

.container {
  width: min(calc(100% - 40px), var(--container));
  margin: 0 auto;
}

.page-glow {
  position: fixed;
  border-radius: 999px;
  filter: blur(120px);
  opacity: 0.12;
  pointer-events: none;
  z-index: -1;
}

.page-glow-1 {
  width: 520px;
  height: 520px;
  background: var(--accent);
  top: 4%;
  right: -160px;
}

.page-glow-2 {
  width: 420px;
  height: 420px;
  background: var(--accent-2);
  left: -160px;
  top: 52%;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  border-bottom: 1px solid transparent;
  background: var(--header-bg);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  transition: border-color 180ms ease;
}

.site-header.scrolled {
  border-bottom-color: var(--line);
}

.header-inner {
  height: 76px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  min-width: max-content;
}

.brand-mark {
  width: 38px;
  height: 38px;
  border-radius: 11px;
  display: inline-grid;
  place-items: center;
  font-family: "JetBrains Mono", monospace;
  font-weight: 700;
  font-size: 0.88rem;
  color: #081019;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
}

.brand-text {
  font-family: "JetBrains Mono", monospace;
  font-size: 0.83rem;
  color: var(--muted);
}

.desktop-nav {
  display: flex;
  align-items: center;
  gap: 28px;
}

.desktop-nav a,
.mobile-nav a {
  color: var(--muted);
  font-size: 0.9rem;
  font-weight: 600;
  transition: color 150ms ease;
}

.desktop-nav a:hover,
.mobile-nav a:hover {
  color: var(--text);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 8px;
}

.icon-button,
.menu-button {
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--text);
  border-radius: 12px;
  cursor: pointer;
}

.icon-button {
  width: 40px;
  height: 40px;
  display: inline-grid;
  place-items: center;
}

.text-button {
  font-family: "JetBrains Mono", monospace;
  font-size: 0.78rem;
  font-weight: 700;
}

.icon-button svg {
  width: 18px;
  height: 18px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}

html[data-theme="dark"] .moon-icon {
  display: none;
}

html[data-theme="light"] .sun-icon {
  display: none;
}

.menu-button {
  width: 42px;
  height: 40px;
  padding: 0 11px;
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 4px;
}

.menu-button span {
  display: block;
  height: 1.5px;
  width: 100%;
  background: var(--text);
}

.mobile-nav {
  display: none;
  flex-direction: column;
  padding: 10px 20px 20px;
  border-top: 1px solid var(--line);
}

.mobile-nav a {
  padding: 10px 0;
}

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

.hero {
  padding: 110px 0 76px;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.08fr 0.92fr;
  gap: 72px;
  align-items: center;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 8px 12px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--muted);
  background: var(--surface);
  font-size: 0.83rem;
  font-weight: 600;
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 999px;
  background: var(--accent-2);
  box-shadow: 0 0 16px var(--accent-2);
}

.hero h1 {
  margin: 26px 0 24px;
  font-size: clamp(3.4rem, 7vw, 6.8rem);
  line-height: 0.96;
  letter-spacing: -0.075em;
  max-width: 820px;
}

.hero h1 span {
  display: block;
}

.gradient-text {
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero-lead {
  max-width: 710px;
  margin: 0;
  color: var(--muted);
  font-size: clamp(1.06rem, 1.5vw, 1.22rem);
}

.hero-actions,
.contact-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 32px;
}

.button {
  min-height: 48px;
  padding: 0 18px;
  border-radius: 13px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  border: 1px solid var(--line);
  font-weight: 700;
  font-size: 0.92rem;
  transition: transform 150ms ease, border-color 150ms ease, background 150ms ease;
}

.button:hover {
  transform: translateY(-2px);
}

.button-primary {
  background: var(--text);
  color: var(--bg);
  border-color: var(--text);
}

.button-secondary {
  background: var(--surface);
  color: var(--text);
}

.button-secondary:hover {
  border-color: var(--subtle);
  background: var(--surface-strong);
}

.hero-meta {
  margin-top: 44px;
  padding-top: 26px;
  border-top: 1px solid var(--line);
  display: flex;
  flex-wrap: wrap;
  gap: 40px;
}

.hero-meta > div {
  display: grid;
  gap: 4px;
}

.meta-label {
  color: var(--subtle);
  font-size: 0.76rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.11em;
}

.hero-meta strong {
  font-size: 0.92rem;
}

.terminal-card {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 24px;
  background: linear-gradient(180deg, var(--surface-strong), var(--surface));
  box-shadow: var(--shadow);
  transform: rotate(1.5deg);
}

.terminal-top {
  height: 48px;
  padding: 0 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--line);
}

.terminal-dots {
  display: flex;
  gap: 7px;
}

.terminal-dots span {
  width: 9px;
  height: 9px;
  border-radius: 999px;
  background: var(--subtle);
  opacity: 0.55;
}

.terminal-title {
  color: var(--subtle);
  font-family: "JetBrains Mono", monospace;
  font-size: 0.72rem;
}

.terminal-body {
  padding: 26px;
  min-height: 430px;
  font-family: "JetBrains Mono", monospace;
  font-size: 0.82rem;
}

.terminal-body p {
  margin: 0 0 11px;
}

.terminal-output {
  color: var(--muted);
  padding-left: 19px;
  margin-bottom: 22px !important;
}

.terminal-prompt {
  color: var(--accent);
  margin-right: 8px;
}

.terminal-success {
  color: var(--accent-2);
}

.terminal-table {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 7px 18px;
  color: var(--muted);
  margin: 0 0 24px 19px;
}

.terminal-table > span:nth-child(-n+2) {
  color: var(--subtle);
}

.terminal-cursor {
  display: inline-block;
  width: 8px;
  height: 16px;
  background: var(--text);
  vertical-align: -3px;
  animation: blink 1s steps(2, start) infinite;
}

@keyframes blink {
  50% { opacity: 0; }
}

.tech-strip {
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: var(--surface);
}

.tech-list {
  min-height: 64px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 18px 28px;
  color: var(--subtle);
  font-family: "JetBrains Mono", monospace;
  font-size: 0.75rem;
  font-weight: 600;
}

.section {
  padding: 118px 0;
}

.section-alt {
  background: var(--bg-alt);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.section-grid {
  display: grid;
  grid-template-columns: 0.84fr 1.16fr;
  gap: 100px;
}

.section-heading {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  margin-bottom: 52px;
}

.section-grid .section-heading {
  margin-bottom: 0;
}

.section-number {
  margin-top: 4px;
  color: var(--accent);
  font-family: "JetBrains Mono", monospace;
  font-size: 0.78rem;
}

.section-kicker {
  margin: 0 0 10px;
  color: var(--subtle);
  text-transform: uppercase;
  letter-spacing: 0.14em;
  font-size: 0.72rem;
  font-weight: 800;
}

.section h2 {
  margin: 0;
  font-size: clamp(2rem, 4vw, 3.6rem);
  line-height: 1.05;
  letter-spacing: -0.05em;
}

.section-content p {
  color: var(--muted);
}

.large-copy {
  margin-top: 0;
  color: var(--text) !important;
  font-size: clamp(1.35rem, 2.4vw, 2.05rem);
  line-height: 1.42;
  letter-spacing: -0.03em;
}

.principles-grid {
  margin-top: 36px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
}

.mini-card,
.project-card,
.certification-card,
.certification-placeholder {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
}

.mini-card {
  padding: 22px;
}

.mini-card-icon {
  display: inline-grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border-radius: 12px;
  background: var(--accent-soft);
  color: var(--accent);
  font-family: "JetBrains Mono", monospace;
  font-size: 0.72rem;
  font-weight: 800;
}

.mini-card h3 {
  margin: 18px 0 8px;
}

.mini-card p {
  margin: 0;
  font-size: 0.9rem;
}

.experience-list {
  display: grid;
  border-top: 1px solid var(--line);
}

.experience-item {
  display: grid;
  grid-template-columns: 70px minmax(0, 1fr) minmax(220px, 0.65fr);
  gap: 24px;
  align-items: start;
  padding: 30px 0;
  border-bottom: 1px solid var(--line);
}

.experience-index {
  color: var(--subtle);
  font-family: "JetBrains Mono", monospace;
  font-size: 0.78rem;
}

.experience-item h3 {
  margin: 0 0 8px;
  font-size: 1.12rem;
}

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

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

.tag-list span {
  display: inline-flex;
  align-items: center;
  min-height: 30px;
  padding: 0 10px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--surface);
  color: var(--muted);
  font-family: "JetBrains Mono", monospace;
  font-size: 0.68rem;
  font-weight: 600;
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.project-card {
  min-height: 310px;
  padding: 28px;
  display: flex;
  flex-direction: column;
  transition: transform 180ms ease, border-color 180ms ease, background 180ms ease;
}

.project-card:hover {
  transform: translateY(-4px);
  border-color: rgba(140, 180, 255, 0.35);
  background: var(--surface-strong);
}

.project-card-featured {
  grid-column: span 2;
  min-height: 350px;
  background:
    linear-gradient(120deg, var(--accent-soft), transparent 58%),
    var(--surface);
}

.project-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.project-label {
  color: var(--accent);
  font-family: "JetBrains Mono", monospace;
  font-size: 0.72rem;
  font-weight: 700;
}

.project-arrow {
  color: var(--subtle);
  font-size: 1.2rem;
}

.project-card h3 {
  max-width: 760px;
  margin: auto 0 12px;
  font-size: clamp(1.55rem, 2.6vw, 2.45rem);
  letter-spacing: -0.04em;
}

.project-card p {
  max-width: 780px;
  margin: 0 0 20px;
  color: var(--muted);
}

.projects-note {
  max-width: 760px;
  margin: 26px 0 0;
  color: var(--subtle);
  font-size: 0.9rem;
}

.certification-layout {
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  gap: 18px 70px;
  align-items: start;
}

.certification-layout .section-heading {
  grid-row: span 2;
}

.certification-card,
.certification-placeholder {
  padding: 24px;
}

.certification-card {
  display: grid;
  grid-template-columns: 54px 1fr;
  gap: 18px;
  align-items: start;
}

.certification-icon {
  width: 54px;
  height: 54px;
  display: grid;
  place-items: center;
  border-radius: 15px;
  background: var(--accent-soft);
  color: var(--accent);
  font-family: "JetBrains Mono", monospace;
  font-weight: 800;
}

.certification-provider {
  color: var(--subtle);
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
}

.certification-card h3 {
  margin: 3px 0 8px;
}

.certification-card p,
.certification-placeholder p {
  margin: 0;
  color: var(--muted);
}

.certification-placeholder {
  display: flex;
  align-items: center;
  gap: 12px;
  border-style: dashed;
}

.certification-placeholder > span {
  color: var(--accent);
  font-size: 1.4rem;
}

.contact-section {
  padding-bottom: 90px;
}

.contact-card {
  padding: 48px;
  border: 1px solid var(--line);
  border-radius: 28px;
  background:
    radial-gradient(circle at 88% 12%, var(--accent-soft), transparent 34%),
    var(--surface);
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 40px;
  align-items: end;
}

.contact-card h2 {
  max-width: 680px;
}

.contact-card p:not(.section-kicker) {
  max-width: 700px;
  margin: 18px 0 0;
  color: var(--muted);
}

.contact-actions {
  margin-top: 0;
}

.site-footer {
  border-top: 1px solid var(--line);
}

.footer-inner {
  min-height: 90px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  color: var(--subtle);
  font-size: 0.82rem;
}

.footer-tech {
  font-family: "JetBrains Mono", monospace;
}

.reveal {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 600ms ease, transform 600ms ease;
}

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

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }
}

@media (max-width: 980px) {
  .desktop-nav {
    display: none;
  }

  .menu-button {
    display: flex;
  }

  .hero {
    padding-top: 78px;
  }

  .hero-grid,
  .section-grid,
  .certification-layout,
  .contact-card {
    grid-template-columns: 1fr;
  }

  .hero-grid {
    gap: 54px;
  }

  .section-grid {
    gap: 44px;
  }

  .section-grid .section-heading {
    margin-bottom: 0;
  }

  .certification-layout .section-heading {
    grid-row: auto;
  }

  .experience-item {
    grid-template-columns: 48px 1fr;
  }

  .experience-item .tag-list {
    grid-column: 2;
  }

  .contact-actions {
    justify-content: flex-start;
  }
}

@media (max-width: 720px) {
  .container {
    width: min(calc(100% - 28px), var(--container));
  }

  .header-inner {
    height: 68px;
  }

  .brand-text {
    display: none;
  }

  .hero {
    padding: 62px 0 52px;
  }

  .hero h1 {
    font-size: clamp(3.05rem, 16vw, 4.8rem);
  }

  .hero-meta {
    gap: 22px;
  }

  .terminal-body {
    min-height: 385px;
    padding: 22px 18px;
    font-size: 0.73rem;
  }

  .tech-list {
    justify-content: flex-start;
    padding: 16px 0;
  }

  .section {
    padding: 84px 0;
  }

  .section-heading {
    margin-bottom: 34px;
  }

  .principles-grid,
  .projects-grid {
    grid-template-columns: 1fr;
  }

  .project-card-featured {
    grid-column: auto;
  }

  .project-card {
    min-height: 270px;
  }

  .experience-item {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .experience-item .tag-list {
    grid-column: auto;
  }

  .contact-card {
    padding: 30px 22px;
  }

  .contact-actions {
    display: grid;
  }

  .footer-inner {
    min-height: 110px;
    align-items: flex-start;
    justify-content: center;
    flex-direction: column;
  }
}