/* "Carbon & Ember" — forge-inspired identity. Light is the secondary/optional
   mode; dark carbon is the brand default (see js/script.js). Ember is the one
   constant brand accent across both modes; cyan/red stay small details only. */
:root{
  --bg:#faf6f0;
  --fg:#211c17;
  --muted:#6e6157;
  --border:#ddd2c2;
  --border-soft:#ece3d5;
  --pillar-bg:#f2e9db;
  --code-bg:#f2e9db;
  --card-bg:#fffdfa;
  --ember:#d9660c;
  --ember-fg:#1a1410;
  --cyan:#0e93a8;
  --red:#c23a2b;
  --dark:#171310;
  --dark2:#221c17;
  --green:#3fb950;
  --font:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  --mono:"SF Mono",Consolas,"Liberation Mono",Menlo,monospace;
}

:root.dark{
  --bg:#0c0a08;
  --fg:#f1ece2;
  --muted:#a89a8a;
  --border:#392f26;
  --border-soft:#221c17;
  --pillar-bg:#171310;
  --code-bg:#171310;
  --card-bg:#141110;
  --ember:#ef7d1a;
  --ember-fg:#160f09;
  --cyan:#22d3ee;
  --red:#ef4444;
  --dark:#080706;
  --dark2:#120e0b;
}

body{transition:background-color .2s,color .2s;}

*{box-sizing:border-box;}
body{
  margin:0;
  font-family:var(--font);
  color:var(--fg);
  background:var(--bg);
  line-height:1.6;
}
a{color:inherit;text-decoration:none;}
.wrap{max-width:960px;margin:0 auto;padding:0 24px;}

/* nav */
.nav{border-bottom:1px solid var(--border);}
.nav .wrap{display:flex;align-items:center;justify-content:space-between;padding-top:18px;padding-bottom:18px;flex-wrap:wrap;row-gap:10px;}
.brand{display:flex;align-items:center;gap:10px;}
.brand-text{display:flex;flex-direction:column;line-height:1.25;}
.brand-name{font-weight:700;font-size:14px;}
.brand-sub{font-size:10.5px;color:var(--muted);font-weight:500;}
.nav-links{display:flex;align-items:center;gap:26px;font-size:14px;color:var(--muted);}
.nav-links a:hover{color:var(--fg);}
.icon-link{display:flex;align-items:center;color:var(--muted);}
.icon-link:hover{color:var(--fg);}

/* logo: head uses currentColor (adapts with --fg), eyes/antenna keep fixed brand color */
.icon-auto{color:var(--fg);}

/* hero */
.hero{padding:64px 0 48px;}
.hero-grid{display:grid;grid-template-columns:1.1fr 1fr;gap:40px;align-items:center;}
.eyebrow{font-size:13px;color:var(--ember);font-weight:600;letter-spacing:.2px;}
h1{font-size:34px;font-weight:600;line-height:1.2;margin:12px 0 14px;}
.sub{color:var(--muted);font-size:15px;max-width:420px;margin:0 0 24px;}

.btn{display:inline-block;font-size:14px;font-weight:600;padding:11px 20px;border-radius:6px;cursor:pointer;border:1px solid transparent;}
.btn-primary{background:var(--ember);color:var(--ember-fg);}
.btn-primary:hover{filter:brightness(1.12);}
.btn-outline{border:1px solid var(--border);color:var(--fg);}
.btn-outline:hover{border-color:var(--ember);color:var(--ember);}
.btn-row{display:flex;gap:10px;flex-wrap:wrap;}

.theme-toggle{width:30px;height:30px;border-radius:50%;border:1px solid var(--border);background:transparent;color:var(--fg);cursor:pointer;display:flex;align-items:center;justify-content:center;flex-shrink:0;}
.icon-moon{display:none;}
.dark .icon-sun{display:none;}
.dark .icon-moon{display:block;}

.cursor{display:inline-block;width:7px;height:14px;background:var(--cyan);margin-left:1px;vertical-align:-2px;animation:blink 0.9s step-start infinite;}
@keyframes blink{50%{opacity:0;}}

/* terminal */
.terminal{background:var(--dark);border:1px solid var(--border);border-radius:10px;overflow:hidden;}
.terminal-bar{display:flex;align-items:center;gap:6px;padding:10px 14px;background:var(--dark2);}
.dot{width:8px;height:8px;border-radius:50%;background:#484f58;}
.terminal-body{padding:16px 18px;font-family:var(--mono);font-size:12.5px;line-height:1.8;color:#8b949e;overflow-x:auto;white-space:pre;}
.terminal-body .prompt{color:var(--cyan);}
.terminal-body .ok{color:var(--green);}
.terminal-body .out{color:#e6edf3;}

/* terminal + video side by side */
.terminal-row{display:grid;grid-template-columns:1fr 1fr;gap:16px;align-items:stretch;margin-bottom:0;}
.terminal-row .terminal{display:flex;flex-direction:column;}
.video-window{background:var(--dark);border:1px solid var(--border);border-radius:10px;overflow:hidden;display:flex;flex-direction:column;}
.video-window .terminal-bar{justify-content:space-between;}
.video-window-label{font-size:11px;color:#8b949e;font-family:var(--mono);}
.video-embed{position:relative;width:100%;flex:1;min-height:0;padding-top:56.25%;background:#000;}
.video-embed iframe{position:absolute;inset:0;width:100%;height:100%;border:0;}

/* pillars / what I build */
.pillars{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin:0 0 64px;}
.pillar{border:1px solid var(--border-soft);background:var(--pillar-bg);border-radius:8px;padding:16px 14px;text-align:left;}
.pillar-title{color:var(--fg);font-size:13.5px;font-weight:600;}
.pillar-sub{color:var(--muted);font-size:11.5px;margin-top:5px;line-height:1.5;}

/* why "data foundry" */
.foundry-why{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:center;margin:0 0 64px;}
.foundry-why-text p{color:var(--muted);font-size:14.5px;line-height:1.75;margin:10px 0 0;}

/* flow diagram (architecture) */
.flow{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-family:var(--mono);font-size:12.5px;margin:14px 0 16px;}
.flow-step{border:1px solid var(--border);background:var(--pillar-bg);border-radius:6px;padding:7px 12px;color:var(--fg);white-space:nowrap;}
.flow-arrow{color:var(--muted);}

/* engineering decisions */
.decisions{margin:8px 0 20px;padding-left:0;list-style:none;}
.decisions li{position:relative;padding-left:20px;margin-bottom:10px;font-size:13px;color:var(--muted);line-height:1.6;}
.decisions li::before{content:"";position:absolute;left:0;top:7px;width:6px;height:6px;border-radius:50%;background:var(--cyan);}

/* engineering principles */
.principles-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin:0 0 64px;}
.principle{border:1px solid var(--border-soft);background:var(--pillar-bg);border-radius:8px;padding:16px 18px;font-size:13px;color:var(--muted);line-height:1.6;}
.principle strong{color:var(--fg);}

/* about */
.about-grid{display:grid;grid-template-columns:1fr 1fr;gap:40px;margin-bottom:64px;align-items:start;}
.about-text{color:var(--muted);font-size:14.5px;line-height:1.75;margin:0;}
.timeline{display:flex;flex-direction:column;}
.timeline-item{position:relative;padding:0 0 20px 22px;border-left:2px solid var(--border-soft);}
.timeline-item:last-child{padding-bottom:0;border-left-color:transparent;}
.timeline-dot{position:absolute;left:-5px;top:3px;width:8px;height:8px;border-radius:50%;background:var(--cyan);}
.timeline-org{font-size:14px;font-weight:600;}
.timeline-org a:hover,.timeline-desc a:hover{color:var(--red);}
.timeline-desc a{text-decoration:underline;text-decoration-color:var(--border);text-underline-offset:2px;}
.timeline-role{font-size:12px;color:var(--red);font-weight:600;margin:2px 0 5px;}
.timeline-date{font-size:11px;color:var(--muted);font-family:var(--mono);margin-top:1px;}
.timeline-desc{font-size:12.5px;color:var(--muted);margin-top:4px;}

/* project cards */
.section-label{font-size:12px;color:var(--muted);text-transform:uppercase;letter-spacing:.5px;margin:0 0 14px;}
.projects-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-bottom:64px;}
.card{background:var(--card-bg);border:1px solid var(--border);border-radius:12px;transition:border-color .15s;}
.card:hover{border-color:var(--ember);}
.card-body{padding:20px 18px;}
.tag{display:inline-block;font-size:10.5px;padding:3px 10px;border-radius:20px;font-weight:600;}
.tag-red{background:rgba(194,58,43,.14);color:var(--red);}
.tag-cyan{background:rgba(14,147,168,.14);color:var(--cyan);}
.card-title{font-size:14px;font-weight:600;margin:9px 0 4px;}
.card-desc{color:var(--muted);font-size:12.5px;}

/* "próximamente" card: dimmed, not clickable, visually distinct from a finished case study */
.card-soon{opacity:.55;border-style:dashed;}
.card-soon:hover{border-color:var(--border);}
.card-soon .tag-red{background:transparent;border:1px solid var(--red);}

/* footer */
footer{border-top:1px solid var(--border);padding:40px 0 26px;}
.footer-grid{display:grid;grid-template-columns:1.3fr 1fr 1fr;gap:24px;margin-bottom:28px;}
.footer-col-label{font-size:10.5px;letter-spacing:.5px;color:var(--muted);margin-bottom:10px;}
.footer-links{display:flex;flex-direction:column;gap:8px;font-size:13px;}
.footer-links a:hover{color:var(--red);}
.footer-bottom{border-top:1px solid var(--border);padding-top:16px;display:flex;justify-content:space-between;align-items:center;font-size:12px;color:var(--muted);flex-wrap:wrap;gap:10px;}
.social{display:flex;gap:10px;}
.social a{width:30px;height:30px;border-radius:50%;border:1px solid var(--border);display:flex;align-items:center;justify-content:center;color:var(--muted);transition:color .15s,border-color .15s;}
.social a:hover{color:var(--red);border-color:var(--red);}

.footer-cta{margin-top:14px;}
.footer-cta .btn{padding:9px 16px;font-size:13px;}

.footer-extra{font-size:11px;color:var(--muted);margin-top:10px;}
.footer-extra a{color:var(--muted);text-decoration:underline;text-decoration-color:var(--border);text-underline-offset:2px;}
.footer-extra a:hover{color:var(--cyan);text-decoration-color:var(--cyan);}

/* project detail page */
.breadcrumb{font-size:13px;color:var(--muted);margin:28px 0 18px;display:inline-block;}
.badges{display:flex;gap:6px;margin:18px 0 28px;flex-wrap:wrap;}
.badge{font-size:12px;padding:3px 11px;border-radius:20px;border:1px solid var(--border);color:var(--muted);}
.two-col{display:grid;grid-template-columns:1fr 1fr;gap:24px;margin-bottom:28px;}
.col-title{font-size:14px;font-weight:600;margin-bottom:6px;}
.col-text{color:var(--muted);font-size:13px;}
table.evals{width:100%;border-collapse:collapse;font-size:13px;margin:28px 0;}
table.evals th{text-align:left;color:var(--muted);font-weight:600;font-size:11px;text-transform:uppercase;letter-spacing:.4px;padding:8px 0;border-bottom:1px solid var(--border);}
table.evals td{padding:12px 0;border-bottom:1px solid var(--border-soft);vertical-align:top;}
table.evals td:first-child{width:38%;font-weight:500;}
table.evals code{background:var(--code-bg);padding:1px 6px;border-radius:4px;font-family:var(--mono);font-size:12px;}

@media (max-width:720px){
  .hero-grid,.two-col,.terminal-row,.about-grid,.foundry-why{grid-template-columns:1fr;}
  .pillars,.principles-grid{grid-template-columns:repeat(2,1fr);}
  .projects-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;}
  .about-grid{gap:28px;margin-bottom:48px;}
  .foundry-why{gap:20px;}
}

@media (max-width:480px){
  .wrap{padding:0 16px;}
  h1{font-size:26px;}
  .hero{padding:36px 0 32px;}
  .sub{font-size:14px;}
  .nav-links{gap:14px;font-size:13px;}
  .pillars{grid-template-columns:1fr;gap:8px;margin:0 0 48px;}
  .principles-grid{grid-template-columns:1fr;}
  .pillar{padding:12px 12px;}
  .pillar-title{font-size:13px;}
  .terminal-body{font-size:11px;padding:14px;}
  table.evals thead{display:none;}
  table.evals, table.evals tbody, table.evals tr, table.evals td{display:block;width:100%;}
  table.evals tr{border-bottom:1px solid var(--border-soft);padding-bottom:10px;margin-bottom:10px;}
  table.evals td{border-bottom:none;padding:2px 0;}
  table.evals td:first-child{font-weight:600;margin-bottom:2px;}
}