/* =====================================================================
   Gustavo Alves: Portfolio  |  styles.css
   ---------------------------------------------------------------------
   Dark "terminal" theme. Palette = black + green / blue / yellow / red.
   Each color has a job:
     green  -> primary / brand / healthy / "done"
     blue   -> services, links, info, secondary
     yellow -> values (stats), ratings (stars), highlights
     red    -> status / alert / attention (used sparingly)
   Sections below are labelled with banners so the file is easy to edit.
   ===================================================================== */

/* ------------------------- 1. TOKENS / VARIABLES ------------------------- */
:root{
  /* surfaces */
  --bg:#0A0C0F;          /* near-black background */
  --bg-2:#0e1116;
  --surface:#13171d;     /* cards */
  --surface-2:#1a2028;
  --line:#232a33;        /* borders */
  --line-soft:#191f26;

  /* text */
  --ink:#E9EEF3;         /* main text (high contrast) */
  --ink-2:#c3ccd6;       /* secondary text */
  --muted:#8b95a1;       /* labels */
  --muted-2:#69717d;     /* faint */

  /* terminal palette */
  --green:#3FE08A;
  --blue:#5BA0FF;
  --yellow:#FFC94D;
  --red:#FF5F6E;
  --accent:var(--green);      /* primary accent = green */
  --accent-ink:#052414;       /* text on top of green buttons */

  /* shape + type */
  --radius:14px;
  --radius-sm:9px;
  --maxw:1140px;
  --f-display:'Space Grotesk', system-ui, sans-serif;
  --f-body:'IBM Plex Sans', system-ui, sans-serif;
  --f-mono:'IBM Plex Mono', ui-monospace, monospace;
}

/* ------------------------- 2. BASE / RESET ------------------------- */
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:var(--f-body);
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
}
/* Soft ambient glow: subtle, keeps the background clean and readable */
body::before{
  content:"";
  position:fixed; inset:0; z-index:0; pointer-events:none;
  background:
    radial-gradient(820px 500px at 84% -12%, rgba(63,224,138,.06), transparent 62%),
    radial-gradient(700px 520px at 2% 0%,  rgba(91,160,255,.05), transparent 60%);
}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 24px;position:relative;z-index:1}
a{color:inherit;text-decoration:none}
.mono{font-family:var(--f-mono)}
::selection{background:var(--green);color:var(--accent-ink)}
:focus-visible{outline:2px solid var(--green);outline-offset:3px;border-radius:4px}

/* Shared eyebrow / section-heading styles */
.eyebrow{
  font-family:var(--f-mono);
  font-size:.72rem;letter-spacing:.16em;text-transform:uppercase;color:var(--green);
  display:inline-flex;align-items:center;gap:.55em;
}
.eyebrow::before{content:"";width:22px;height:1px;background:var(--green);display:inline-block}

/* ------------------------- 3. NAVBAR ------------------------- */
.nav{
  position:sticky;top:0;z-index:40;
  backdrop-filter:blur(10px);
  background:rgba(10,12,15,.72);
  border-bottom:1px solid var(--line-soft);
}
.nav-inner{display:flex;align-items:center;gap:20px;height:64px}
.brand{display:flex;align-items:center;gap:10px;font-family:var(--f-display);font-weight:700;letter-spacing:-.01em}
.brand .dot{width:10px;height:10px;border-radius:50%;background:var(--green);box-shadow:0 0 0 4px rgba(63,224,138,.16)}
.nav-links{display:flex;gap:26px;margin-left:auto}
.nav-links a{font-size:.82rem;color:var(--muted);font-weight:500;transition:color .18s}
.nav-links a:hover{color:var(--ink)}

/* language toggle */
.lang{display:inline-flex;border:1px solid var(--line);border-radius:999px;overflow:hidden;font-family:var(--f-mono);font-size:.72rem}
.lang button{background:transparent;border:0;color:var(--muted);cursor:pointer;padding:6px 12px;font-family:inherit;font-size:inherit;letter-spacing:.05em;transition:all .18s}
.lang button[aria-pressed="true"]{background:var(--green);color:var(--accent-ink);font-weight:600}

/* ------------------------- 4. HERO ------------------------- */
.hero{padding:70px 0 30px;display:grid;grid-template-columns:1.1fr .9fr;gap:44px;align-items:center}
.hero h1{font-family:var(--f-display);font-weight:700;font-size:clamp(2.3rem,5vw,3.6rem);line-height:1.03;letter-spacing:-.02em;margin:.55em 0 .25em}
.hero h1 .light{color:var(--muted)}
.role{font-family:var(--f-mono);color:var(--ink-2);font-size:.9rem;letter-spacing:.01em;margin-bottom:16px}
.lede{color:var(--ink-2);font-size:1.05rem;max-width:34em;margin:0 0 22px}
.meta-line{display:flex;flex-wrap:wrap;gap:8px 18px;font-family:var(--f-mono);font-size:.78rem;color:var(--muted);margin-bottom:26px}
.meta-line span{display:inline-flex;align-items:center;gap:7px}
.meta-line span::before{content:"";width:6px;height:6px;background:var(--green);border-radius:2px}

/* buttons */
.cta{display:flex;flex-wrap:wrap;gap:12px}
.btn{display:inline-flex;align-items:center;gap:9px;padding:12px 18px;border-radius:var(--radius-sm);font-weight:600;font-size:.9rem;border:1px solid var(--line);color:var(--ink);background:var(--surface);transition:all .18s}
.btn:hover{border-color:var(--green);transform:translateY(-1px)}
.btn svg{width:16px;height:16px}
.btn.primary{background:var(--green);color:var(--accent-ink);border-color:var(--green)}
.btn.primary:hover{box-shadow:0 8px 26px rgba(63,224,138,.28)}

/* terminal card (hero visual) */
.terminal{border:1px solid var(--line);border-radius:var(--radius);background:var(--bg-2);overflow:hidden;box-shadow:0 24px 60px -34px rgba(0,0,0,.85)}
.term-bar{display:flex;align-items:center;gap:8px;padding:11px 14px;background:#0c0f13;border-bottom:1px solid var(--line)}
.tl-dot{width:11px;height:11px;border-radius:50%;display:inline-block}
.tl-dot.r{background:var(--red)}      /* traffic-light dots use 3 of the palette colors */
.tl-dot.y{background:var(--yellow)}
.tl-dot.g{background:var(--green)}
.term-title{margin-left:8px;font-family:var(--f-mono);font-size:.72rem;color:var(--muted-2)}
.term-body{margin:0;padding:20px 18px;font-family:var(--f-mono);font-size:.86rem;line-height:1.9;color:var(--ink-2);white-space:pre-wrap;word-break:break-word}
.term-body .p{color:var(--green)}     /* prompt */
.term-body .o{color:var(--ink)}       /* output */
.term-body .b{color:var(--blue)}      /* focus line */
.term-body .y{color:var(--yellow)}    /* uptime line */
.term-body .cursor{color:var(--green);animation:blink 1.1s steps(1) infinite}
@keyframes blink{50%{opacity:0}}

/* ------------------------- 5. STATS STRIP ------------------------- */
.stats{display:grid;grid-template-columns:repeat(5,1fr);gap:1px;background:var(--line);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;margin:8px 0 20px}
.stat{background:var(--bg-2);padding:20px 18px}
.stat .n{font-family:var(--f-display);font-weight:700;font-size:1.9rem;color:var(--yellow);line-height:1}
.stat .n .u{font-size:1rem}
.stat .l{font-size:.76rem;color:var(--muted);margin-top:8px;line-height:1.35}

/* ------------------------- 6. SECTION SHELL ------------------------- */
section{padding:62px 0;position:relative}
.sec-head{margin-bottom:32px;max-width:52em}
.sec-head h2{font-family:var(--f-display);font-weight:700;font-size:clamp(1.6rem,3vw,2.2rem);letter-spacing:-.02em;margin:.5em 0 .3em;line-height:1.1}
.sec-head p{color:var(--muted);margin:0}

/* profile */
.profile{color:var(--ink-2);font-size:1.06rem;max-width:46em}

/* ------------------------- 7. FOCUS AREAS ("What I do") ------------------------- */
.focus-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.focus{position:relative;border:1px solid var(--line);border-radius:var(--radius);background:var(--surface);padding:24px 22px 22px;transition:border-color .2s,transform .2s}
.focus::before{content:"";position:absolute;left:0;top:18px;bottom:18px;width:3px;border-radius:3px;background:var(--green)}
.focus:hover{transform:translateY(-2px)}
.focus h3{font-family:var(--f-display);font-weight:600;font-size:1.12rem;margin:0 0 8px;letter-spacing:-.01em}
.focus p{color:var(--muted);font-size:.9rem;margin:0 0 14px}
.focus .tools{font-size:.72rem;color:var(--ink-2);letter-spacing:.02em}
/* per-card accent colours (one job per colour) */
.focus.c-green::before{background:var(--green)}  .focus.c-green:hover{border-color:var(--green)}
.focus.c-blue::before{background:var(--blue)}    .focus.c-blue:hover{border-color:var(--blue)}
.focus.c-yellow::before{background:var(--yellow)}.focus.c-yellow:hover{border-color:var(--yellow)}
.focus.c-red::before{background:var(--red)}      .focus.c-red:hover{border-color:var(--red)}

/* ------------------------- 8. STACK (chips) ------------------------- */
.grid-skills{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.skill-card{border:1px solid var(--line);border-radius:var(--radius);background:var(--surface);padding:22px;transition:border-color .2s,transform .2s}
.skill-card:hover{border-color:var(--green);transform:translateY(-2px)}
.skill-card .k{font-family:var(--f-mono);font-size:.72rem;letter-spacing:.12em;text-transform:uppercase;color:var(--green);margin-bottom:14px}
.chips{display:flex;flex-wrap:wrap;gap:7px}
.chip{font-family:var(--f-mono);font-size:.74rem;color:var(--ink-2);background:var(--bg-2);border:1px solid var(--line-soft);padding:5px 9px;border-radius:6px}

/* ------------------------- 9. PROJECTS ------------------------- */
.grid-proj{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.proj{border:1px solid var(--line);border-radius:var(--radius);background:var(--surface);padding:24px;display:flex;flex-direction:column;transition:border-color .2s,transform .2s}
.proj:hover{border-color:var(--green);transform:translateY(-3px)}
.proj .tag{font-family:var(--f-mono);font-size:.68rem;letter-spacing:.1em;text-transform:uppercase;color:var(--muted-2);margin-bottom:12px}
.proj h3{font-family:var(--f-display);font-weight:600;font-size:1.14rem;margin:0 0 10px;letter-spacing:-.01em}
.proj p{color:var(--muted);font-size:.9rem;margin:0 0 16px;flex:1}
.proj .stack{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:16px}
.proj .stack span{font-family:var(--f-mono);font-size:.68rem;color:var(--green);border:1px solid rgba(63,224,138,.28);padding:3px 7px;border-radius:5px}
.proj .link{font-family:var(--f-mono);font-size:.78rem;color:var(--ink-2);transition:color .18s}
.proj .link:hover{color:var(--green)}
.proj .muted-link{color:var(--muted-2)}
/* web projects use blue instead of green */
.proj.web:hover{border-color:var(--blue)}
.proj.web .stack span{color:var(--blue);border-color:rgba(91,160,255,.3)}
.proj.web .link:hover{color:var(--blue)}

/* ------------------------- 10. EXPERIENCE (timeline) ------------------------- */
.timeline{position:relative;margin-left:8px}
.timeline::before{content:"";position:absolute;left:6px;top:6px;bottom:6px;width:1.5px;background:var(--line)}
.tl{position:relative;padding:0 0 30px 34px}
.tl:last-child{padding-bottom:0}
.tl::before{content:"";position:absolute;left:0;top:6px;width:13px;height:13px;border-radius:50%;background:var(--bg);border:2px solid var(--line)}
.tl.now::before{border-color:var(--green);background:var(--green);box-shadow:0 0 0 4px rgba(63,224,138,.18)}
.tl .when{font-family:var(--f-mono);font-size:.72rem;color:var(--muted-2);letter-spacing:.04em}
.tl h3{font-family:var(--f-display);font-weight:600;font-size:1.1rem;margin:4px 0 2px}
.tl .org{color:var(--green);font-size:.85rem;font-weight:500;margin-bottom:10px;font-family:var(--f-mono)}
.tl ul{margin:0;padding-left:18px;color:var(--muted);font-size:.9rem}
.tl li{margin-bottom:5px}

/* ------------------------- 11. CERTIFICATIONS ------------------------- */
.cert-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.cert-card{border:1px solid var(--line);border-radius:var(--radius);background:var(--surface);padding:22px;transition:border-color .2s,transform .2s}
.cert-card:hover{border-color:var(--green);transform:translateY(-2px)}
.cert-card h3{font-family:var(--f-display);font-weight:600;font-size:1.02rem;margin:14px 0 6px;line-height:1.25}
.cert-meta{font-size:.72rem;color:var(--muted);letter-spacing:.03em}
.badge{font-family:var(--f-mono);font-size:.6rem;letter-spacing:.06em;text-transform:uppercase;padding:4px 8px;border-radius:5px;display:inline-block}
.badge.ok{background:rgba(63,224,138,.14);color:var(--green);border:1px solid rgba(63,224,138,.35)}
.badge.wip{background:rgba(91,160,255,.12);color:var(--blue);border:1px solid rgba(91,160,255,.3)}

/* ------------------------- 12. COURSES ------------------------- */
.course-groups{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;align-items:start}
.course-group{border:1px solid var(--line);border-radius:var(--radius);background:var(--surface);padding:20px 22px}
.cg-title{font-family:var(--f-mono);font-size:.72rem;letter-spacing:.12em;text-transform:uppercase;margin:0 0 8px;padding-bottom:12px;border-bottom:1px solid var(--line-soft)}
.cg-title.c-green{color:var(--green)}
.cg-title.c-red{color:var(--red)}
.cg-title.c-blue{color:var(--blue)}
.course{display:flex;align-items:flex-start;gap:12px;padding:12px 0;border-bottom:1px solid var(--line-soft)}
.course:last-child{border-bottom:0}
.course .ci{min-width:0}
.course .name{font-weight:500;font-size:.9rem;line-height:1.35}
.course .prov{font-size:.68rem;color:var(--muted-2);letter-spacing:.04em;margin-top:3px}
.course .cm{margin-left:auto;text-align:right;white-space:nowrap;flex-shrink:0}
.course .stars{display:block;color:var(--yellow);font-size:.8rem;letter-spacing:1px}
.course .pct{font-size:.66rem;color:var(--muted)}

/* education */
.edu-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
.edu{border:1px solid var(--line);border-radius:var(--radius-sm);background:var(--surface);padding:16px 18px}
.edu .dt{font-weight:600;font-size:.92rem}
.edu .dm{font-size:.72rem;color:var(--muted);margin-top:4px}

/* ------------------------- 13. CONTACT + FOOTER ------------------------- */
.contact{text-align:center;border:1px solid var(--line);border-radius:var(--radius);background:linear-gradient(180deg,var(--surface),var(--bg-2));padding:56px 28px}
.contact h2{font-family:var(--f-display);font-weight:700;font-size:clamp(1.7rem,3.2vw,2.4rem);letter-spacing:-.02em;margin:.4em 0}
.contact p{color:var(--muted);max-width:36em;margin:0 auto 26px}
.contact .cta{justify-content:center}

footer{border-top:1px solid var(--line-soft);padding:26px 0 40px;color:var(--muted-2);font-family:var(--f-mono);font-size:.74rem}
.foot-inner{display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;align-items:center}

/* ------------------------- 14. SCROLL REVEAL ------------------------- */
.reveal{opacity:0;transform:translateY(18px);transition:opacity .6s cubic-bezier(.2,.7,.2,1),transform .6s cubic-bezier(.2,.7,.2,1)}
.reveal.in{opacity:1;transform:none}

/* ------------------------- 15. RESPONSIVE ------------------------- */
@media (max-width:940px){
  .hero{grid-template-columns:1fr;gap:32px;padding-top:46px}
  .focus-grid,.grid-skills,.grid-proj{grid-template-columns:1fr 1fr}
  .cert-grid{grid-template-columns:1fr 1fr}
  .course-groups{grid-template-columns:1fr}
  .stats{grid-template-columns:repeat(2,1fr)}
  .nav-links{display:none}
}
@media (max-width:600px){
  .focus-grid,.grid-skills,.grid-proj,.cert-grid{grid-template-columns:1fr}
  .edu-grid{grid-template-columns:1fr}
  .stats{grid-template-columns:1fr 1fr}
  .stat .n{font-size:1.6rem}
  .wrap{padding:0 18px}
}

/* Respect users who prefer no motion */
@media (prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none}
  .term-body .cursor{animation:none}
  html{scroll-behavior:auto}
}