/* ---------- Tokens ---------- */
:root {
  --ink: #081627;        /* page background, deep navy */
  --surface: #0F2238;    /* panels and cards */
  --line: #20405F;       /* borders */
  --text: #E7F0F8;
  --muted: #8DA6BE;
  --sky: #6CABDD;        /* City sky blue accent */
  --sky-soft: rgba(108, 171, 221, 0.12);
  --up: #7FD6A4;

  --display: "Archivo", system-ui, sans-serif;
  --body: "IBM Plex Sans", system-ui, sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, monospace;

  --wrap: 1160px;
  --gutter: clamp(16px, 4vw, 40px);
  --radius: 6px;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 80px; }
body {
  margin: 0;
  background: var(--ink);
  color: var(--text);
  font: 400 1.0625rem/1.65 var(--body);
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: var(--sky); text-underline-offset: 3px; }
a:hover { color: var(--text); }
:focus-visible { outline: 2px solid var(--sky); outline-offset: 3px; border-radius: 2px; }

h1, h2, h3 {
  font-family: var(--display);
  font-stretch: 112%;
  line-height: 1.12;
  margin: 0 0 0.5em;
  letter-spacing: -0.01em;
}
h1 { font-size: clamp(2.25rem, 5.2vw, 3.9rem); font-weight: 800; }
h2 { font-size: clamp(1.75rem, 3.4vw, 2.6rem); font-weight: 800; }
h3 { font-size: 1.2rem; font-weight: 600; }
p { margin: 0 0 1em; }

.wrap { max-width: var(--wrap); margin: 0 auto; padding: 0 var(--gutter); }
.mono { font-family: var(--mono); font-size: 0.82rem; }
.muted { color: var(--muted); }

.skip {
  position: absolute; left: -999px; top: 8px;
  background: var(--sky); color: var(--ink); padding: 8px 12px; z-index: 100;
}
.skip:focus { left: 8px; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-block;
  background: var(--sky);
  color: var(--ink);
  font: 600 1rem var(--body);
  padding: 0.8em 1.4em;
  border: 1px solid var(--sky);
  border-radius: var(--radius);
  text-decoration: none;
  cursor: pointer;
  transition: background .15s, color .15s;
}
.btn:hover { background: transparent; color: var(--sky); }
.btn-ghost { background: transparent; color: var(--text); border-color: var(--line); }
.btn-ghost:hover { border-color: var(--sky); color: var(--sky); }
.btn-small { padding: 0.5em 1em; font-size: 0.92rem; }

/* ---------- Nav ---------- */
.nav {
  position: sticky; top: 0; z-index: 50;
  background: rgba(8, 22, 39, 0.88);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.nav-inner { display: flex; align-items: center; justify-content: space-between; height: 68px; }
.brand { display: flex; align-items: center; gap: 10px; color: var(--text); text-decoration: none; font-weight: 600; }
.brand-mark {
  display: grid; place-items: center;
  width: 34px; height: 34px;
  border: 1px solid var(--sky); color: var(--sky);
  font: 800 0.8rem var(--display); font-stretch: 112%;
}
.nav-links { display: flex; align-items: center; gap: 28px; }
.nav-links a:not(.btn) { color: var(--muted); text-decoration: none; font-size: 0.95rem; }
.nav-links a:not(.btn):hover { color: var(--text); }
.nav-toggle {
  display: none;
  background: none; border: 1px solid var(--line); color: var(--text);
  font: 500 0.9rem var(--body); padding: 6px 12px; border-radius: var(--radius);
}

/* ---------- Hero ---------- */
.hero {
  padding: clamp(56px, 9vw, 120px) 0 clamp(64px, 9vw, 112px);
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 48px 48px;
  background-position: center top;
  position: relative;
}
.hero::after { /* fade the grid out toward the bottom */
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(to bottom, rgba(8,22,39,.55), var(--ink) 92%);
  pointer-events: none;
}
.hero-grid { position: relative; z-index: 1; display: grid; grid-template-columns: 1.25fr 1fr; gap: clamp(32px, 5vw, 72px); align-items: center; }
.hero-copy h1 { max-width: 16ch; }
.lede { font-size: 1.15rem; color: var(--muted); max-width: 52ch; }
.actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 28px; }

.status {
  display: inline-flex; align-items: center; gap: 10px;
  border: 1px solid var(--line); background: var(--surface);
  padding: 6px 14px; border-radius: 999px;
  font-size: 0.9rem; color: var(--text); margin-bottom: 24px;
}
.dot { width: 8px; height: 8px; border-radius: 50%; background: var(--up); box-shadow: 0 0 0 4px rgba(127,214,164,.18); }

/* Homelab status panel: the one signature element */
.panel {
  position: relative;
  background: var(--surface);
  border: 1px solid var(--line);
  padding: 22px 24px 18px;
}
.corner { position: absolute; width: 9px; height: 9px; background: var(--sky); }
.corner.tl { top: -5px; left: -5px; } .corner.tr { top: -5px; right: -5px; }
.corner.bl { bottom: -5px; left: -5px; } .corner.br { bottom: -5px; right: -5px; }
.panel-head {
  display: flex; justify-content: space-between; align-items: baseline;
  font: 600 1rem var(--display); font-stretch: 112%;
  padding-bottom: 14px; border-bottom: 1px solid var(--line);
}
.services { list-style: none; margin: 0; padding: 0; }
.services li {
  display: grid; grid-template-columns: 1fr auto 44px; gap: 12px; align-items: center;
  padding: 11px 0; border-bottom: 1px dashed var(--line);
}
.svc { font-weight: 500; }
.up { font: 500 0.78rem var(--mono); color: var(--up); text-align: right; }
.up::before { content: ""; display: inline-block; width: 6px; height: 6px; border-radius: 50%; background: var(--up); margin-right: 6px; vertical-align: middle; }
.panel-foot { margin: 14px 0 0; }

/* Load sequence: services come online one by one */
@media (prefers-reduced-motion: no-preference) {
  .js .services li .up { opacity: 0; transition: opacity .3s; }
  .js .services li.online .up { opacity: 1; }
}

/* ---------- Sections ---------- */
.section { padding: clamp(64px, 9vw, 112px) 0; border-top: 1px solid var(--line); }
.tag { font: 500 0.9rem var(--mono); color: var(--sky); margin-bottom: 14px; }
.section-head { max-width: 640px; margin-bottom: 48px; }
.sub { color: var(--muted); }
.two-col { display: grid; grid-template-columns: 1fr 1.2fr; gap: clamp(32px, 6vw, 88px); align-items: start; }
.prose p { color: var(--muted); max-width: 60ch; }
.prose p:first-child { color: var(--text); font-size: 1.15rem; }
.social { list-style: none; padding: 0; margin: 24px 0 0; display: flex; gap: 24px; }

/* Projects */
.projects { display: grid; grid-template-columns: repeat(2, 1fr); gap: 28px; }
.project { border: 1px solid var(--line); background: var(--surface); display: flex; flex-direction: column; }
.thumb { aspect-ratio: 16 / 9; border-bottom: 1px solid var(--line); background: var(--ink); }
/* Placeholder art until real screenshots are added */
.thumb-lab   { background: repeating-linear-gradient(0deg, var(--ink) 0 22px, #0c1e33 22px 24px), var(--ink); }
.thumb-zactex{ background: linear-gradient(135deg, #12304d 0 50%, var(--ink) 50%); }
.thumb-truck { background: radial-gradient(circle at 30% 60%, var(--sky-soft) 0 22%, transparent 23%), var(--ink); }
.thumb-surge { background: linear-gradient(to top, var(--sky-soft), var(--ink) 70%); }
.project-body { padding: 24px; display: flex; flex-direction: column; flex: 1; }
.project-body p { color: var(--muted); }
.stack { list-style: none; padding: 0; margin: 4px 0 20px; display: flex; flex-wrap: wrap; gap: 8px; }
.stack li { font: 400 0.8rem var(--mono); color: var(--sky); border: 1px solid var(--line); padding: 3px 9px; border-radius: 3px; }
.more { margin-top: auto; font-weight: 600; }

/* Skills */
.skills { display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid var(--line); border-left: 1px solid var(--line); }
.skill { padding: 28px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.skill h3 { color: var(--text); }
.skill p { color: var(--muted); margin: 0; font-size: 0.98rem; }

/* Credentials */
.creds { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.cred { border-top: 2px solid var(--sky); padding-top: 20px; }
.cred dl { margin: 16px 0 0; }
.cred dl div { display: flex; justify-content: space-between; gap: 16px; padding: 8px 0; border-bottom: 1px solid var(--line); }
.cred dt { color: var(--muted); }
.cred dd { margin: 0; text-align: right; }
.pending { color: var(--sky); }

/* FAQ */
.faq details { border-bottom: 1px solid var(--line); }
.faq details:first-child { border-top: 1px solid var(--line); }
.faq summary {
  cursor: pointer; list-style: none;
  padding: 20px 36px 20px 0; position: relative;
  font-weight: 600; font-size: 1.05rem;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: "+"; position: absolute; right: 4px; top: 50%; transform: translateY(-50%);
  color: var(--sky); font: 400 1.5rem var(--mono); transition: transform .2s;
}
.faq details[open] summary::after { transform: translateY(-50%) rotate(45deg); }
.faq details p { color: var(--muted); padding-bottom: 12px; max-width: 60ch; }

/* Contact */
.form { display: grid; gap: 18px; }
.form label { display: grid; gap: 6px; font-weight: 500; font-size: 0.95rem; }
.form input, .form textarea {
  font: inherit; color: var(--text);
  background: var(--surface); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 12px 14px;
}
.form input:focus, .form textarea:focus { outline: none; border-color: var(--sky); box-shadow: 0 0 0 3px var(--sky-soft); }
.form .btn { justify-self: start; }
.form-status { margin: 0; color: var(--muted); min-height: 1.5em; }

/* Footer */
.footer { border-top: 1px solid var(--line); padding: 36px 0; font-size: 0.95rem; }
.footer-inner { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 16px; align-items: center; }
.footer p { margin: 0; }
.footer nav { display: flex; gap: 24px; }
.footer nav a { color: var(--muted); text-decoration: none; }
.footer nav a:hover { color: var(--sky); }

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
  .hero-grid, .two-col { grid-template-columns: 1fr; }
  .skills { grid-template-columns: repeat(2, 1fr); }
  .creds { grid-template-columns: 1fr; }
}
@media (max-width: 720px) {
  .nav-toggle { display: block; }
  .nav-links {
    display: none; position: absolute; top: 68px; left: 0; right: 0;
    flex-direction: column; align-items: stretch; gap: 0;
    background: var(--ink); border-bottom: 1px solid var(--line); padding: 8px var(--gutter) 20px;
  }
  .nav-links.open { display: flex; }
  .nav-links a:not(.btn) { padding: 12px 0; border-bottom: 1px solid var(--line); }
  .nav-links .btn { margin-top: 16px; text-align: center; }
  .projects, .skills { grid-template-columns: 1fr; }
  .services li { grid-template-columns: 1fr 44px; }
  .services li .mono { display: none; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { transition: none !important; }
}

/* ---------- Case study pages ---------- */
.case-hero { padding: clamp(48px, 7vw, 88px) 0 clamp(40px, 5vw, 64px); }
.back { display: inline-block; margin-bottom: 28px; font-size: 0.95rem; text-decoration: none; }
.back:hover { text-decoration: underline; }
.case-hero h1 { max-width: 20ch; }
.case-hero .lede { max-width: 60ch; }
.facts {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 0;
  margin: 40px 0 0; border-top: 1px solid var(--line); border-left: 1px solid var(--line);
}
.facts div { padding: 16px 20px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.facts dt { color: var(--muted); font-size: 0.85rem; margin-bottom: 4px; }
.facts dd { margin: 0; font-weight: 500; }
.facts a { font-weight: 600; }

.case { padding: clamp(48px, 7vw, 80px) 0; border-top: 1px solid var(--line); }
.case-body { display: grid; grid-template-columns: 220px 1fr; gap: clamp(24px, 5vw, 64px); }
.case-body h2 { font-size: 1.35rem; }
.case-body .content { max-width: 68ch; }
.case-body .content p, .case-body .content li { color: var(--muted); }
.case-body .content strong { color: var(--text); font-weight: 600; }
.case-body .content ul { padding-left: 1.2em; margin: 0 0 1em; }
.case-body .content li { margin-bottom: 0.5em; }
.case-body .content li::marker { color: var(--sky); }

.diagram { margin: 8px 0 0; border: 1px solid var(--line); background: var(--surface); padding: clamp(16px, 3vw, 28px); }
.diagram svg { width: 100%; height: auto; display: block; }
.diagram figcaption { color: var(--muted); font-size: 0.9rem; margin-top: 12px; }

.next-project { padding: clamp(48px, 6vw, 72px) 0; border-top: 1px solid var(--line); }
.next-project a { display: block; text-decoration: none; color: var(--text); }
.next-project span { color: var(--muted); font-size: 0.95rem; }
.next-project strong { display: block; font: 800 clamp(1.6rem, 3.2vw, 2.4rem)/1.15 var(--display); font-stretch: 112%; margin-top: 6px; }
.next-project a:hover strong { color: var(--sky); }

@media (max-width: 900px) {
  .facts { grid-template-columns: repeat(2, 1fr); }
  .case-body { grid-template-columns: 1fr; gap: 12px; }
}