:root {
  --color-bg: #050608;
  --color-bg-elevated: #0b0d12;
  --color-border-subtle: rgba(255, 255, 255, 0.06);
  --color-text: #eff3f8;
  --color-text-muted: #a0a4b0;
  --color-accent: #4fd1c5;
  --color-accent-soft: rgba(79, 209, 197, 0.12);
  --color-terminal: #0a0d13;
  --color-terminal-border: rgba(255, 255, 255, 0.08);

  --font-mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;

  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.5rem;
  --space-6: 2rem;
  --space-7: 3rem;
  --space-8: 4rem;

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;

  --shadow-soft: 0 16px 40px rgba(0, 0, 0, 0.75);
  --shadow-subtle: 0 0 0 1px rgba(255, 255, 255, 0.02);

  --transition-fast: 150ms ease-out;
  --transition-med: 220ms ease-out;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  background: radial-gradient(circle at top left, #101321 0, #050608 52%, #020308 100%);
  color: var(--color-text);
  font-family: var(--font-mono);
  font-size: 15px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

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

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

a:hover,
a:focus-visible {
  text-decoration: underline;
}

:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 3px;
}

/* Layout */

.container {
  width: 100%;
  max-width: 1120px;
  margin: 0 auto;
  padding-inline: var(--space-4);
}

.section {
  padding-block: var(--space-8);
}

.section:nth-of-type(odd) {
  background: radial-gradient(circle at top right, #101322 0, #050608 45%, #020308 100%);
}

.section-inner {
  position: relative;
}

.section-header {
  margin-bottom: var(--space-6);
}

.section-kicker {
  margin: 0 0 var(--space-2);
  font-size: 0.75rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-accent);
}

.section-title {
  margin: 0;
  font-size: clamp(1.5rem, 1.4rem + 0.6vw, 2rem);
  font-weight: 600;
}

/* Header */

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: linear-gradient(to bottom, rgba(5, 6, 8, 0.98), rgba(5, 6, 8, 0.92) 70%, transparent 100%);
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
  backdrop-filter: blur(16px);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-block: var(--space-3);
}

.logo-mark {
  font-weight: 600;
  color: var(--color-accent);
  letter-spacing: 0.06em;
  font-size: 0.9rem;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  font-size: 0.85rem;
}

.site-nav a {
  position: relative;
  padding-block: var(--space-1);
  color: var(--color-text-muted);
  transition: color var(--transition-fast);
}

.site-nav a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 0;
  height: 1px;
  background: var(--color-accent);
  transition: width var(--transition-fast);
}

.site-nav a:hover,
.site-nav a:focus-visible {
  color: var(--color-text);
  text-decoration: none;
}

.site-nav a:hover::after,
.site-nav a:focus-visible::after {
  width: 100%;
}

/* Hero */

.hero {
  padding-top: var(--space-7);
  padding-bottom: var(--space-8);
}

.hero-inner {
  display: grid;
  gap: var(--space-6);
}

.hero-terminal {
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-terminal-border);
  background: radial-gradient(circle at top left, #141829 0, #05070e 55%, #020308 100%);
  box-shadow: var(--shadow-soft);
  padding: var(--space-3) var(--space-3) var(--space-4);
  position: relative;
  overflow: hidden;
}

.hero-terminal::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at top left, rgba(79, 209, 197, 0.13), transparent 55%);
  opacity: 0.9;
  mix-blend-mode: screen;
  pointer-events: none;
}

.hero-terminal::after {
  content: "";
  position: absolute;
  inset-inline: -20%;
  bottom: -60%;
  height: 220%;
  background: radial-gradient(circle at 50% 90%, rgba(8, 252, 189, 0.25), transparent 60%);
  opacity: 0.24;
  pointer-events: none;
}

.hero-terminal > * {
  position: relative;
  z-index: 1;
}

.terminal-header {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin-bottom: var(--space-3);
  padding-bottom: var(--space-2);
  border-bottom: 1px solid var(--color-terminal-border);
}

.terminal-dot {
  width: 9px;
  height: 9px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.16);
}

.terminal-dot:nth-child(1) {
  background: #ff5f57;
}

.terminal-dot:nth-child(2) {
  background: #febc2e;
}

.terminal-dot:nth-child(3) {
  background: #28c840;
}

.terminal-title {
  margin-left: auto;
  font-size: 0.7rem;
  color: var(--color-text-muted);
}

.terminal-body {
  font-size: 0.85rem;
}

.terminal-line {
  display: flex;
  align-items: baseline;
  gap: var(--space-2);
  margin-bottom: var(--space-2);
}

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

.terminal-command {
  color: var(--color-text);
}

.terminal-output-label {
  color: rgba(79, 209, 197, 0.9);
}

.terminal-output {
  color: var(--color-text);
  white-space: nowrap;
}

.terminal-meta .terminal-output {
  white-space: normal;
}

.terminal-meta {
  color: var(--color-text-muted);
}

.terminal-cursor {
  width: 8px;
  height: 1.1em;
  background: var(--color-accent);
  display: inline-block;
  margin-left: 2px;
  transform: translateY(1px);
  animation: cursor-blink 1.1s steps(2, start) infinite;
}

@keyframes cursor-blink {
  0%,
  49% {
    opacity: 1;
  }
  50%,
  100% {
    opacity: 0;
  }
}

.hero-aside {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.hero-title {
  margin: 0;
  font-size: clamp(1.6rem, 1.4rem + 1.2vw, 2.3rem);
  letter-spacing: -0.03em;
}

.hero-subtitle {
  margin: 0;
  color: var(--color-text-muted);
  max-width: 36rem;
}

.hero-meta {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  font-size: 0.9rem;
  color: var(--color-text-muted);
}

/* About */

.about-grid {
  display: grid;
  gap: var(--space-3);
  color: var(--color-text-muted);
}

/* Skills */

.skills-grid {
  display: grid;
  gap: var(--space-4);
}

.skill-group {
  padding: var(--space-4);
  border-radius: var(--radius-md);
  background: linear-gradient(150deg, rgba(15, 23, 42, 0.95), rgba(15, 23, 42, 0.75));
  border: 1px solid var(--color-border-subtle);
  box-shadow: var(--shadow-subtle);
}

.skill-group h3 {
  margin: 0 0 var(--space-2);
  font-size: 0.95rem;
  font-weight: 500;
}

.skill-group ul {
  list-style: none;
  margin: 0;
  padding: 0;
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

.skill-group li + li {
  margin-top: 0.2rem;
}

/* Projects */

.projects-section {
  position: relative;
}

.projects-outer {
  position: relative;
  border-radius: var(--radius-lg);
  border: 1px solid rgba(255, 255, 255, 0.06);
  background: linear-gradient(135deg, rgba(10, 10, 18, 0.95), rgba(4, 6, 12, 0.96));
  padding: var(--space-4);
  overflow: hidden;
}

.projects-track {
  display: flex;
  gap: var(--space-4);
  will-change: transform;
}

.project-card {
  min-width: min(80vw, 420px);
  max-width: 420px;
  padding: var(--space-4);
  border-radius: var(--radius-md);
  background: radial-gradient(circle at top left, rgba(79, 209, 197, 0.16), rgba(11, 16, 32, 0.96));
  border: 1px solid rgba(255, 255, 255, 0.06);
  box-shadow: var(--shadow-subtle);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.project-label {
  font-size: 0.75rem;
  color: var(--color-text-muted);
}

.project-title {
  margin: 0;
  font-size: 1rem;
}

.project-text {
  margin: 0;
  font-size: 0.88rem;
  color: var(--color-text-muted);
}

.project-meta {
  list-style: none;
  margin: var(--space-2) 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-1);
}

.project-meta li {
  font-size: 0.75rem;
  padding: 0.1rem 0.5rem;
  border-radius: 999px;
  background: var(--color-accent-soft);
  color: var(--color-accent);
}

/* Contact */

.contact-layout {
  display: grid;
  gap: var(--space-5);
}

.contact-text {
  margin: 0;
  color: var(--color-text-muted);
  max-width: 34rem;
}

.contact-meta {
  display: grid;
  gap: var(--space-3);
}

.contact-block {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
}

.contact-label {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--color-text-muted);
}

.contact-link {
  font-size: 0.9rem;
  color: var(--color-text);
  padding-bottom: 1px;
  border-bottom: 1px solid rgba(79, 209, 197, 0.4);
  width: fit-content;
  transition: border-color var(--transition-fast), color var(--transition-fast), transform var(--transition-fast);
}

.contact-link:hover,
.contact-link:focus-visible {
  color: var(--color-accent);
  border-color: var(--color-accent);
  text-decoration: none;
  transform: translateY(-1px);
}

/* Footer */

.site-footer {
  padding-block: var(--space-5);
  border-top: 1px solid rgba(255, 255, 255, 0.04);
  background: #050608;
}

.footer-inner {
  text-align: center;
}

.footer-text {
  margin: 0;
  font-size: 0.8rem;
  color: var(--color-text-muted);
}

/* Reveal animation base state */

.reveal {
  opacity: 0;
  transform: translateY(24px);
}

/* Responsive */

@media (min-width: 640px) {
  .hero-inner {
    grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr);
    align-items: center;
  }

  .hero {
    padding-top: var(--space-8);
  }

  .hero-meta {
    flex-direction: row;
    gap: var(--space-4);
    flex-wrap: wrap;
  }

  .about-grid {
    grid-template-columns: minmax(0, 2fr) minmax(0, 2fr);
  }

  .skills-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .contact-layout {
    grid-template-columns: minmax(0, 2fr) minmax(0, 2fr);
  }
}

@media (min-width: 900px) {
  .skills-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .project-card {
    min-width: 420px;
  }
}

/* Reduced motion */

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

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition: none !important;
    scroll-behavior: auto !important;
  }

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

  .projects-outer {
    overflow-x: auto;
  }

  .projects-track {
    display: block;
  }

  .project-card {
    min-width: 0;
    max-width: none;
    margin-bottom: var(--space-3);
  }
}