/* ===== Daniel Duarte — Portfolio ===== */
:root{
  --bg:#0c0d0f;
  --bg-2:#121317;
  --bg-3:#16181d;
  --line:rgba(233,234,236,0.10);
  --line-strong:rgba(233,234,236,0.20);
  --text:#e9eaec;
  --muted:#888d95;
  --muted-2:#5f646b;
  --accent:#c9a86a;
  --font-mono:'IBM Plex Mono',ui-monospace,'SFMono-Regular',Menlo,monospace;
  --font-sans:'Helvetica Neue',Helvetica,Arial,sans-serif;
  --font-display:var(--font-mono);
  --gutter:clamp(20px,5vw,72px);
}
body[data-display="sans"]{--font-display:var(--font-sans)}
body[data-display="mono"]{--font-display:var(--font-mono)}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  background:var(--bg);
  color:var(--text);
  font-family:var(--font-sans);
  font-weight:400;
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  overflow-x:hidden;
}
::selection{background:var(--accent);color:#0c0d0f}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%}

.wrap{width:min(1340px,100%);margin-inline:auto;padding-inline:var(--gutter)}

/* eyebrow / mono label */
.eyebrow{
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.22em;
  text-transform:uppercase;
  color:var(--accent);
  font-weight:500;
}
.idx{font-family:var(--font-mono);font-size:12px;letter-spacing:.18em;color:var(--muted-2);white-space:nowrap}

/* ===== NAV ===== */
.nav{
  position:fixed;top:0;left:0;right:0;z-index:50;
  display:flex;align-items:center;justify-content:space-between;
  padding:18px var(--gutter);
  transition:background .4s ease,border-color .4s ease,backdrop-filter .4s ease;
  border-bottom:1px solid transparent;
}
.nav.scrolled{
  background:rgba(12,13,15,.72);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid var(--line);
}
.nav .brand{font-family:var(--font-mono);font-size:14px;letter-spacing:.04em;font-weight:500;white-space:nowrap}
.nav .brand b{font-weight:500}
.nav .brand .dot{color:var(--accent)}
.nav-links{display:flex;gap:30px;align-items:center;font-family:var(--font-mono);font-size:13px;letter-spacing:.02em;white-space:nowrap}
.nav-links a{color:rgba(233,234,236,.84);transition:color .25s;position:relative;padding:4px 0;text-shadow:0 1px 12px rgba(0,0,0,.45)}
.nav.scrolled .nav-links a{text-shadow:none;color:var(--muted)}
.nav-links a:hover{color:var(--text)}
.nav-links a::after{content:'';position:absolute;left:0;bottom:-2px;height:1px;width:0;background:var(--accent);transition:width .3s ease}
.nav-links a:hover::after{width:100%}
.nav-toggle{display:none;background:none;border:1px solid var(--line-strong);color:var(--text);
  font-family:var(--font-mono);font-size:12px;letter-spacing:.12em;text-transform:uppercase;
  padding:8px 12px;cursor:pointer}

/* ===== HERO ===== */
.hero{position:relative;height:100svh;min-height:600px;width:100%;overflow:hidden;display:flex;align-items:flex-end}
.hero-img{position:absolute;inset:0;width:100%;height:100%;}
.hero::after{content:'';position:absolute;inset:0;pointer-events:none;z-index:2;
  background:
    linear-gradient(180deg,rgba(11,12,14,.85) 0%,rgba(11,12,14,.40) 16%,rgba(11,12,14,.20) 36%,rgba(11,12,14,.62) 74%,rgba(11,12,14,.98) 100%),
    linear-gradient(90deg,rgba(11,12,14,.86) 0%,rgba(11,12,14,.55) 38%,rgba(11,12,14,.16) 66%,rgba(11,12,14,0) 88%)}
.hero-inner{position:relative;z-index:3;width:100%;padding-bottom:clamp(40px,7vh,84px)}
.hero .eyebrow{margin-bottom:22px}
.hero h1{
  font-family:var(--font-display);
  font-weight:500;
  font-size:clamp(52px,11.5vw,168px);
  line-height:.9;
  letter-spacing:-.035em;
  color:#fff;
  text-shadow:0 2px 40px rgba(0,0,0,.45);
}
.hero .eyebrow,.hero .tagline,.hero .scroll-cue{text-shadow:0 1px 2px rgba(0,0,0,.85),0 0 22px rgba(0,0,0,.7)}
.hero .tagline{
  margin-top:26px;max-width:30ch;
  font-size:clamp(17px,2vw,22px);
  line-height:1.5;color:var(--text);font-weight:300;
}
.hero .scroll-cue{
  margin-top:38px;display:inline-flex;align-items:center;gap:12px;
  font-family:var(--font-mono);font-size:13px;letter-spacing:.14em;text-transform:uppercase;color:var(--muted);
  transition:color .25s
}
.hero .scroll-cue:hover{color:var(--text)}
.hero .scroll-cue .arrow{display:inline-block;animation:bob 2.4s ease-in-out infinite}
@keyframes bob{0%,100%{transform:translateY(0)}50%{transform:translateY(5px)}}

/* ===== SECTION SCAFFOLD ===== */
section[id]{scroll-margin-top:84px}
.section{padding-block:clamp(82px,13vh,168px)}
.section-head{display:flex;align-items:baseline;gap:18px;flex-wrap:wrap;margin-bottom:clamp(40px,6vw,72px)}
.section-head .idx{flex:none}
.section-title{font-family:var(--font-display);font-weight:500;font-size:clamp(30px,5.2vw,60px);letter-spacing:-.03em;line-height:1;min-width:0;max-width:100%}
.hr{height:1px;background:var(--line);border:0}

/* ===== ABOUT ===== */
.about-cols{display:grid;grid-template-columns:1fr;gap:clamp(32px,5vw,60px);align-items:stretch}
@media(min-width:820px){.about-cols{grid-template-columns:0.82fr 1.18fr}}
.about-portrait{margin:0;display:flex;flex-direction:column}
.about-portrait-img{display:block;width:100%;aspect-ratio:4/5;border:1px solid var(--line-strong);
  filter:saturate(.82) contrast(1.02) brightness(.97)}
.about-portrait figcaption{margin-top:14px;font-family:var(--font-mono);font-size:11.5px;letter-spacing:.12em;
  text-transform:uppercase;color:var(--muted-2)}
@media(min-width:820px){
  .about-portrait{align-self:stretch}
  .about-portrait-img{aspect-ratio:auto;flex:1 1 auto;min-height:420px}
}
.about-text{display:flex;flex-direction:column}
.about-lead{font-family:var(--font-display);font-weight:500;font-size:clamp(23px,3vw,38px);line-height:1.18;
  letter-spacing:-.02em;max-width:26ch;color:var(--text);margin-bottom:.7em;text-wrap:balance}
.about-text > p:not(.about-lead){font-size:clamp(16px,1.4vw,19px);line-height:1.65;color:var(--muted);font-weight:300;max-width:50ch}
.about-text > p:not(.about-lead) + p{margin-top:1.1em}
.about-meta{margin-top:clamp(28px,3.5vw,40px);display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--line);border:1px solid var(--line)}
@media(max-width:680px){.about-meta{grid-template-columns:1fr 1fr}}
.about-meta div{background:var(--bg);padding:22px 24px}
.about-meta dt{font-family:var(--font-mono);font-size:11px;letter-spacing:.16em;text-transform:uppercase;color:var(--muted-2);margin-bottom:10px}
.about-meta dd{font-family:var(--font-mono);font-size:15px;color:var(--text)}

/* ===== SERVICES ===== */
.service-grid{display:grid;grid-template-columns:1fr;gap:1px;background:var(--line);border:1px solid var(--line)}
@media(min-width:760px){.service-grid{grid-template-columns:1fr 1fr}}
.service{background:var(--bg);padding:clamp(24px,3.2vw,42px);min-height:260px;display:flex;flex-direction:column;justify-content:space-between;gap:28px}
.service h3{font-family:var(--font-display);font-size:clamp(21px,2.4vw,32px);font-weight:500;line-height:1.08;letter-spacing:-.02em;max-width:14ch}
.service p{color:var(--muted);font-size:clamp(15px,1.3vw,18px);line-height:1.58;font-weight:300;max-width:34ch;text-wrap:pretty}

/* ===== PROJECTS ===== */
.proj-intro{max-width:64ch;margin-bottom:clamp(40px,6vw,72px)}
.proj-intro .eyebrow{display:block;margin-bottom:18px}
.proj-intro p{font-size:clamp(16px,1.5vw,20px);line-height:1.62;color:var(--muted);font-weight:300;text-wrap:pretty}
.proj-num{font-family:var(--font-mono);font-size:12px;color:var(--accent);letter-spacing:.1em}
.proj-title{font-family:var(--font-display);font-size:clamp(20px,2.4vw,30px);font-weight:500;letter-spacing:-.02em}

/* casework — labeled model | render pairs (no forced overlay) */
.casework{display:flex;flex-direction:column;gap:clamp(56px,8vw,112px)}
.case-pair{display:grid;grid-template-columns:1fr;gap:10px}
@media(min-width:720px){.case-pair{grid-template-columns:1fr 1fr;gap:14px}}
.case-figure{position:relative;margin:0;aspect-ratio:3/2;overflow:hidden;border:1px solid var(--line);background:var(--bg-2)}
.case-img{position:absolute;inset:0;width:100%;height:100%}
/* the drawing reads as a technical sheet */
.case-draw{background:#e9e8e3}
body[data-sheet="oscuro"] .case-draw{background:var(--bg-3)}
.case-tag{position:absolute;left:13px;bottom:13px;z-index:3;font-family:var(--font-mono);font-size:11px;
  letter-spacing:.16em;text-transform:uppercase;padding:6px 10px;
  background:rgba(11,12,14,.62);backdrop-filter:blur(4px);border:1px solid var(--line);color:var(--text)}
.case-draw .case-tag{background:rgba(255,255,255,.74);border-color:rgba(0,0,0,.14);color:#33312c}
body[data-sheet="oscuro"] .case-draw .case-tag{background:rgba(11,12,14,.62);border-color:var(--line);color:var(--text)}
.case-render .case-tag{left:auto;right:13px;border-color:var(--accent);color:var(--accent)}
.case-meta{margin-top:22px;display:flex;align-items:baseline;gap:16px;flex-wrap:wrap}
.case-note{flex:1 1 280px;color:var(--muted);font-weight:300;font-size:clamp(15px,1.4vw,18px);line-height:1.55;
  max-width:52ch;text-wrap:pretty}

/* ===== SKILLS ===== */
.skills{display:grid;grid-template-columns:1fr;gap:clamp(40px,5vw,72px)}
@media(min-width:760px){.skills{grid-template-columns:1fr 1fr}}
.skill-group h3{font-family:var(--font-mono);font-size:12px;letter-spacing:.18em;text-transform:uppercase;
  color:var(--muted-2);margin-bottom:8px}
.skill-list{list-style:none}
.skill-list li{display:flex;align-items:baseline;justify-content:space-between;gap:18px;
  padding:18px 0;border-top:1px solid var(--line)}
.skill-list li:last-child{border-bottom:1px solid var(--line)}
.skill-name{font-family:var(--font-display);font-size:clamp(18px,2vw,24px);font-weight:500;letter-spacing:-.01em}
.skill-note{font-size:14px;color:var(--muted);text-align:right;max-width:22ch;font-weight:300}

/* ===== CONTACT ===== */
.contact{padding-block:clamp(90px,15vh,200px);border-top:1px solid var(--line)}
.contact h2{font-family:var(--font-display);font-weight:500;letter-spacing:-.035em;line-height:1.02;
  font-size:clamp(34px,6.5vw,86px);max-width:16ch}
.contact h2 em{font-style:normal;color:var(--accent)}
.contact-links{margin-top:clamp(40px,6vw,72px);display:grid;grid-template-columns:1fr;gap:1px;
  background:var(--line);border:1px solid var(--line)}
@media(min-width:680px){.contact-links{grid-template-columns:1fr 1fr}}
@media(min-width:980px){.contact-links{grid-template-columns:repeat(3,1fr)}}
.contact-links a{background:var(--bg);padding:clamp(24px,3vw,38px);display:flex;flex-direction:column;gap:8px;
  transition:background .3s ease}
.contact-links a:hover{background:var(--bg-3)}
.contact-links .k{font-family:var(--font-mono);font-size:11px;letter-spacing:.16em;text-transform:uppercase;color:var(--muted-2)}
.contact-links .v{font-family:var(--font-display);font-size:clamp(18px,2.4vw,28px);font-weight:500;
  display:flex;align-items:center;gap:12px;letter-spacing:-.01em}
.contact-links .v .ar{width:.85em;height:.85em;flex:0 0 auto;color:var(--accent);stroke:currentColor;stroke-width:1.8;
  stroke-linecap:square;stroke-linejoin:miter;fill:none;transition:transform .3s ease}
.contact-links a:hover .v .ar{transform:translate(4px,-4px)}

/* ===== FOOTER ===== */
.footer{border-top:1px solid var(--line);padding-block:34px;display:flex;align-items:center;
  justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-family:var(--font-mono);font-size:12px;letter-spacing:.06em;color:var(--muted-2)}
.footer a:hover{color:var(--text)}

/* ===== reveal anim ===== */
.anim .reveal{opacity:0;transform:translateY(20px)}
.anim .reveal.in{opacity:1;transform:none;transition:opacity .8s cubic-bezier(.2,.7,.2,1),transform .8s cubic-bezier(.2,.7,.2,1)}

/* ===== responsive nav ===== */
@media(max-width:680px){
  .nav-links{position:fixed;inset:0 0 auto 0;top:0;flex-direction:column;align-items:flex-start;gap:4px;
    background:rgba(12,13,15,.96);backdrop-filter:blur(16px);padding:84px var(--gutter) 32px;
    transform:translateY(-100%);transition:transform .45s cubic-bezier(.2,.7,.2,1);border-bottom:1px solid var(--line)}
  body.nav-open .nav-links{transform:translateY(0)}
  .nav-links a{font-size:20px;padding:12px 0;color:var(--text)}
  .nav-toggle{display:inline-block;position:relative;z-index:60}
}