:root {
  --bg: #06111a;
  --bg-deep: #040b11;
  --panel: #0a1822;
  --panel-2: #0d1d28;
  --line: #18313d;
  --text: #f3f7f8;
  --muted: #9cafba;
  --green: #31f27c;
  --green-soft: #21c968;
  --green-dark: #0d6d3b;
  --max: 1400px;
  --mono: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
  --sans: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg-deep);
  color: var(--text);
  font-family: var(--sans);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
button { font: inherit; }
.container { width: min(calc(100% - 48px), var(--max)); margin-inline: auto; }
.skip-link { position: fixed; top: -100px; left: 16px; z-index: 100; background: var(--green); color: #00170a; padding: 10px 14px; font-weight: 800; }
.skip-link:focus { top: 16px; }

.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 50;
  background: rgba(4, 13, 20, .88);
  border-bottom: 1px solid rgba(80, 117, 133, .25);
  backdrop-filter: blur(16px);
}
.navbar { height: 70px; display: flex; align-items: center; justify-content: space-between; gap: 32px; }
.brand { display: flex; align-items: center; gap: 12px; font: 800 19px/1 var(--mono); letter-spacing: .02em; }
.brand-mark { color: var(--green); font-size: 18px; }
.nav-panel { display: flex; align-items: center; gap: 44px; }
.nav-links { display: flex; align-items: center; gap: 38px; }
.nav-link { position: relative; color: #d5dee3; font: 500 14px/70px var(--mono); }
.nav-link::after { content: ""; position: absolute; left: 0; right: 0; bottom: 0; height: 2px; background: var(--green); transform: scaleX(0); transition: transform .2s ease; }
.nav-link:hover, .nav-link.active { color: var(--green); }
.nav-link.active::after { transform: scaleX(1); }
.nav-toggle { display: none; border: 0; background: transparent; padding: 8px; }
.nav-toggle span { display: block; width: 24px; height: 2px; background: var(--text); margin: 5px 0; }

.button { min-height: 46px; display: inline-flex; align-items: center; justify-content: center; gap: 10px; padding: 0 22px; border: 1px solid var(--line); border-radius: 7px; font: 700 14px/1 var(--mono); transition: transform .2s ease, border-color .2s ease, background .2s ease; }
.button:hover { transform: translateY(-2px); }
.button-primary { background: var(--green); border-color: var(--green); color: #00170a; box-shadow: 0 10px 34px rgba(49, 242, 124, .15); }
.button-primary:hover { background: #54ff94; }
.button-outline { border-color: #48616e; background: rgba(7, 19, 28, .55); }
.button-outline:hover, .button-glass:hover { border-color: var(--green); }
.button-glass { background: rgba(3, 12, 18, .6); border-color: #71838d; }
.nav-github { min-height: 40px; border-color: var(--green); color: var(--green); }

.hero {
  min-height: 650px;
  position: relative;
  display: flex;
  align-items: center;
  overflow: hidden;
  padding-top: 70px;
  background-image: url('../assets/images/hero-linux-workstation.jpeg');
  background-size: cover;
  background-position: center center;
}
.hero::after { content: ""; position: absolute; inset: auto 0 0; height: 120px; background: linear-gradient(transparent, var(--bg)); pointer-events: none; }
.hero-overlay { position: absolute; inset: 0; background: linear-gradient(90deg, rgba(2, 10, 16, .96) 0%, rgba(2, 10, 16, .84) 25%, rgba(2, 10, 16, .26) 54%, rgba(2, 10, 16, .08) 100%); }
.hero-content { position: relative; z-index: 2; padding-top: 30px; }
.eyebrow, .section-kicker { margin: 0 0 8px; color: var(--green); text-transform: uppercase; font: 700 12px/1.2 var(--mono); letter-spacing: .08em; }
.hero h1 { margin: 0; font: 800 clamp(48px, 6vw, 78px)/.95 var(--sans); letter-spacing: -.04em; }
.hero-role { margin: 14px 0 8px; color: var(--green); font: 800 clamp(25px, 3vw, 39px)/1.15 var(--mono); }
.hero-copy { max-width: 540px; margin: 0; color: #d0d9df; font: 400 clamp(17px, 2vw, 21px)/1.45 var(--mono); }
.hero-stack { display: flex; align-items: center; flex-wrap: wrap; gap: 16px; margin-top: 28px; color: #c2cfd6; font: 500 15px/1 var(--mono); }
.hero-stack i { width: 5px; height: 5px; background: var(--green); transform: rotate(45deg); }
.hero-actions { display: flex; gap: 14px; margin-top: 25px; }

.section { border-top: 1px solid rgba(50, 89, 106, .45); background: var(--bg); }
.about { padding: 58px 0 54px; }
.about-grid { display: grid; grid-template-columns: 1.05fr 1.5fr .72fr; gap: 54px; align-items: start; }
h2 { margin: 0; font: 800 clamp(25px, 3vw, 34px)/1.18 var(--mono); letter-spacing: -.025em; }
.about-copy { color: var(--muted); font-size: 15px; }
.about-copy p { margin: 0 0 10px; }
.status-list { list-style: none; margin: 0; padding: 0 0 0 30px; border-left: 1px solid var(--green); color: #b8c6cd; font: 500 14px/1.6 var(--mono); }
.status-list li { margin: 0 0 8px; }
.status-list span { display: inline-block; min-width: 26px; color: var(--green); }

.projects { padding: 54px 0 60px; }
.projects-heading { display: flex; justify-content: space-between; align-items: end; gap: 30px; margin-bottom: 28px; }
.project-filters { display: flex; flex-wrap: wrap; gap: 8px; justify-content: flex-end; }
.filter-button { cursor: pointer; border: 1px solid #29414e; border-radius: 999px; padding: 8px 15px; color: #9eb0ba; background: #07141d; font: 600 12px/1 var(--mono); }
.filter-button:hover, .filter-button.active { color: #00170a; background: var(--green); border-color: var(--green); }
.project-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.project-card { min-width: 0; display: grid; grid-template-columns: 34% 1fr; overflow: hidden; min-height: 225px; background: linear-gradient(145deg, #0c1b25, #08151e); border: 1px solid #1e3947; border-radius: 10px; transition: transform .2s ease, border-color .2s ease, opacity .2s ease; }
.project-card:hover { transform: translateY(-4px); border-color: #315668; }
.project-card.hidden { display: none; }
.project-visual { position: relative; margin: 10px; border-radius: 7px; overflow: hidden; background: radial-gradient(circle at 45% 35%, #0b4055, #03090d 70%); border: 1px solid #153b4b; }
.project-body { padding: 18px 18px 16px 6px; display: flex; flex-direction: column; }
.tags { display: flex; flex-wrap: wrap; gap: 6px; }
.tags span { padding: 4px 7px; border-radius: 999px; color: #9fe4bc; background: #102b28; font: 600 10px/1 var(--mono); }
.project-body h3 { margin: 13px 0 8px; font: 800 20px/1.15 var(--mono); }
.project-body p { margin: 0; color: #aab9c1; font-size: 13px; line-height: 1.45; }
.project-link { display: flex; justify-content: space-between; align-items: center; margin-top: auto; padding-top: 14px; color: var(--green); font: 700 12px/1 var(--mono); }
.project-link.muted { color: #78909c; }
.terminal-line { display: block; margin: 18px 16px -8px; color: var(--green); font: 700 11px/1 var(--mono); }
.mini-chart { position: absolute; left: 14px; right: 14px; bottom: 24px; height: 52px; display: flex; align-items: end; gap: 5px; }
.mini-chart i { flex: 1; min-width: 3px; background: linear-gradient(var(--green), #0e7a46); border-radius: 2px 2px 0 0; }
.mini-chart i:nth-child(1) { height: 35%; }.mini-chart i:nth-child(2) { height: 60%; }.mini-chart i:nth-child(3) { height: 48%; }.mini-chart i:nth-child(4) { height: 78%; }.mini-chart i:nth-child(5) { height: 52%; }.mini-chart i:nth-child(6) { height: 90%; }.mini-chart i:nth-child(7) { height: 70%; }
.server-visual { display: grid; place-items: center; background: radial-gradient(circle, #07344c, #03080d 72%); }
.rack { width: 70%; padding: 8px; border: 2px solid #32586a; background: #061018; box-shadow: 0 0 35px rgba(0, 142, 255, .2); }
.rack i { display: block; height: 17px; margin: 6px 0; border: 1px solid #244758; background: linear-gradient(90deg, #0b1e29 70%, #2ff27c 70% 75%, #0b1e29 75%); }
.bash-visual { display: grid; place-items: center; color: #7cc7ff; font: 800 38px/1 var(--mono); background: radial-gradient(circle, #0b3653, #03090d 72%); }
.gear { position: absolute; right: 10px; bottom: 10px; font-size: 40px; color: #9bd7ff; }

.skills { padding: 40px 0; }
.skills-layout { display: grid; grid-template-columns: 290px 1fr; gap: 42px; align-items: center; }
.skill-grid { display: grid; grid-template-columns: repeat(6, 1fr); gap: 10px; }
.skill { min-height: 92px; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 9px; background: #091720; border: 1px solid #1b3340; border-radius: 9px; color: #c9d4da; font: 600 12px/1 var(--mono); }
.skill b { color: var(--text); font: 700 22px/1 var(--mono); }
.skill:hover { border-color: var(--green-dark); }

.contact { padding: 38px 0; background: #061018; }
.contact-layout { display: grid; grid-template-columns: 1.1fr 1fr .75fr; align-items: center; gap: 32px; }
.contact h2 { font-size: 22px; }
.contact p { margin: 8px 0 0; color: #879ba6; font-size: 13px; }
.contact-actions { display: flex; gap: 10px; justify-content: center; }
.contact-actions .button { min-height: 42px; padding: 0 18px; }
.availability { display: flex; justify-content: flex-end; align-items: center; gap: 12px; font: 600 12px/1.3 var(--mono); }
.availability > span { width: 9px; height: 9px; border-radius: 50%; background: var(--green); box-shadow: 0 0 16px rgba(49,242,124,.55); }
.availability strong { display: block; color: var(--green); }
.availability small { display: block; margin-top: 4px; color: #8fa3ad; font: 500 11px/1.2 var(--mono); }
.footer { background: #03090e; border-top: 1px solid #162d39; color: #718690; }
.footer-inner { min-height: 64px; display: flex; justify-content: space-between; align-items: center; gap: 20px; font: 500 11px/1.4 var(--mono); }
.footer a:hover { color: var(--green); }

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

@media (max-width: 1100px) {
  .project-grid { grid-template-columns: 1fr; }
  .project-card { grid-template-columns: 220px 1fr; }
  .skill-grid { grid-template-columns: repeat(4, 1fr); }
  .about-grid { grid-template-columns: 1fr 1.4fr; }
  .status-list { grid-column: 1 / -1; display: grid; grid-template-columns: repeat(2, 1fr); }
  .contact-layout { grid-template-columns: 1fr 1fr; }
  .availability { grid-column: 1 / -1; justify-content: flex-start; }
}

@media (max-width: 820px) {
  .container { width: min(calc(100% - 32px), var(--max)); }
  .nav-toggle { display: block; cursor: pointer; }
  .nav-panel { position: absolute; top: 70px; left: 0; right: 0; display: none; padding: 18px 16px 24px; background: #06121b; border-bottom: 1px solid var(--line); }
  .nav-panel.open { display: block; }
  .nav-links { display: grid; gap: 0; }
  .nav-link { line-height: 48px; }
  .nav-link::after { display: none; }
  .nav-github { margin-top: 12px; width: 100%; }
  .hero { min-height: 690px; align-items: end; padding-bottom: 100px; background-position: 62% center; }
  .hero-overlay { background: linear-gradient(0deg, rgba(2,10,16,.98) 10%, rgba(2,10,16,.7) 65%, rgba(2,10,16,.25)); }
  .hero-content { padding-top: 0; }
  .about-grid, .skills-layout, .contact-layout { grid-template-columns: 1fr; }
  .status-list { grid-column: auto; grid-template-columns: 1fr; }
  .projects-heading { align-items: start; flex-direction: column; }
  .project-filters { justify-content: flex-start; }
  .skill-grid { grid-template-columns: repeat(3, 1fr); }
  .contact-actions { justify-content: flex-start; flex-wrap: wrap; }
  .availability { grid-column: auto; }
}

@media (max-width: 560px) {
  .hero h1 { font-size: 52px; }
  .hero-role { font-size: 25px; }
  .hero-actions { flex-direction: column; align-items: stretch; max-width: 280px; }
  .project-card { grid-template-columns: 1fr; }
  .project-visual { min-height: 160px; }
  .project-body { padding: 10px 18px 18px; }
  .skill-grid { grid-template-columns: repeat(2, 1fr); }
  .status-list { padding-left: 18px; }
  .footer-inner { padding: 18px 0; flex-direction: column; align-items: flex-start; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition: none !important; }
}