/* Shared design system — Thiago Sousa Matias site (v2, clean/modern) */
:root{
  --paper:#F6F5F2;
  --paper-raised:#FFFFFF;
  --ink:#14181F;
  --ink-muted:#667085;
  --accent:#B9791F;
  --accent-ink:#FFFFFF;
  --line:rgba(20,24,31,0.10);
  --line-strong:rgba(20,24,31,0.16);
  --shadow-sm:0 1px 2px rgba(20,24,31,.06);
  --shadow-md:0 10px 24px -12px rgba(20,24,31,.28);
  --shadow-lg:0 20px 44px -16px rgba(20,24,31,.38);
  color-scheme: light;
}
@media (prefers-color-scheme: dark){
  :root:not([data-theme="light"]){
    --paper:#101317;
    --paper-raised:#181C22;
    --ink:#F1EFEA;
    --ink-muted:#96A0AE;
    --accent:#E3A94F;
    --accent-ink:#14181F;
    --line:rgba(241,239,234,0.10);
    --line-strong:rgba(241,239,234,0.18);
    --shadow-sm:0 1px 2px rgba(0,0,0,.3);
    --shadow-md:0 10px 24px -12px rgba(0,0,0,.55);
    --shadow-lg:0 20px 44px -16px rgba(0,0,0,.6);
    color-scheme: dark;
  }
}
:root[data-theme="dark"]{
  --paper:#101317;
  --paper-raised:#181C22;
  --ink:#F1EFEA;
  --ink-muted:#96A0AE;
  --accent:#E3A94F;
  --accent-ink:#14181F;
  --line:rgba(241,239,234,0.10);
  --line-strong:rgba(241,239,234,0.18);
  --shadow-sm:0 1px 2px rgba(0,0,0,.3);
  --shadow-md:0 10px 24px -12px rgba(0,0,0,.55);
  --shadow-lg:0 20px 44px -16px rgba(0,0,0,.6);
  color-scheme: dark;
}

*{box-sizing:border-box;}
body{
  background:var(--paper);
  color:var(--ink);
  font-family:'Inter',system-ui,sans-serif;
  font-size:17px;
  padding-inline:0;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3{
  font-family:'Inter',system-ui,sans-serif;
  font-weight:700;
  text-wrap:balance;
  margin:0;
  letter-spacing:-.03em;
  line-height:1.05;
}
.mono{
  font-family:'Inter',system-ui,sans-serif;
  font-variant-numeric:tabular-nums;
}
a{color:inherit;}
em{font-style:italic;}
::selection{background:var(--accent);color:var(--accent-ink);}
.wrap{
  max-width:1120px;
  margin-inline:auto;
  padding-inline:24px;
}

/* ---------- top bar ---------- */
.topbar{
  position:sticky;
  top:env(safe-area-inset-top,0px);
  z-index:20;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  padding:16px 24px;
  background:color-mix(in srgb, var(--paper) 82%, transparent);
  backdrop-filter:blur(10px) saturate(1.3);
  border-bottom:1px solid var(--line);
}
.topbar-brand{
  display:flex;
  align-items:center;
  gap:9px;
  font-family:'Inter',system-ui,sans-serif;
  font-size:12.5px;
  font-weight:500;
  letter-spacing:.02em;
  text-decoration:none;
  color:var(--ink);
}
.topbar-brand svg{width:17px;height:17px;flex:none;color:var(--accent);}
.topbar nav{
  display:flex;
  gap:4px;
  font-size:12.5px;
  font-family:'Inter',system-ui,sans-serif;
}
.topbar nav a{
  text-decoration:none;
  color:var(--ink-muted);
  white-space:nowrap;
  padding:7px 13px;
  border-radius:999px;
  transition:color .15s ease, background-color .15s ease;
}
.topbar nav a:hover{color:var(--ink);background:var(--line);}
.topbar nav a.current{color:var(--ink);background:var(--paper-raised);box-shadow:var(--shadow-sm);}
.menu-toggle{
  display:none;
  align-items:center;
  justify-content:center;
  width:38px;height:38px;
  flex:none;
  border-radius:10px;
  border:1px solid var(--line);
  background:var(--paper-raised);
  color:var(--ink);
  cursor:pointer;
  padding:0;
}
.menu-toggle svg{width:18px;height:18px;}
@media (max-width:620px){
  .menu-toggle{display:inline-flex;}
  .topbar nav{
    display:none;
    position:absolute;
    top:100%;
    left:0;right:0;
    flex-direction:column;
    gap:2px;
    padding:10px;
    background:var(--paper-raised);
    border-bottom:1px solid var(--line);
    box-shadow:var(--shadow-md);
  }
  .topbar nav.is-open{display:flex;}
  .topbar nav a{padding:13px 14px;border-radius:10px;}
}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:9px;
  padding:14px 24px;
  border-radius:999px;
  font-family:'Inter',system-ui,sans-serif;
  font-weight:600;
  font-size:15.5px;
  text-decoration:none;
  border:1.5px solid transparent;
  cursor:pointer;
  white-space:nowrap;
  transition:transform .18s cubic-bezier(.2,.7,.3,1), box-shadow .18s ease, background-color .18s ease, border-color .18s ease, color .18s ease;
}
.btn svg{width:15px;height:15px;flex:none;transition:transform .18s cubic-bezier(.2,.7,.3,1);}
.btn:hover svg{transform:translateX(3px);}
.btn:active{transform:translateY(1px) scale(.99);}
.btn-primary{
  background:var(--ink);
  color:var(--paper);
  box-shadow:var(--shadow-sm), var(--shadow-md);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:var(--shadow-sm), var(--shadow-lg);}
.btn-outline{
  background:var(--paper-raised);
  color:var(--ink);
  border-color:var(--line-strong);
  box-shadow:var(--shadow-sm);
}
.btn-outline:hover{border-color:var(--ink);transform:translateY(-2px);box-shadow:var(--shadow-md);}
.btn-accent{
  background:var(--accent);
  color:var(--accent-ink);
  box-shadow:var(--shadow-sm), 0 10px 24px -12px color-mix(in srgb, var(--accent) 70%, transparent);
}
.btn-accent:hover{transform:translateY(-2px);box-shadow:var(--shadow-sm), 0 16px 32px -12px color-mix(in srgb, var(--accent) 75%, transparent);}
.btn-sm{padding:10px 18px;font-size:13.5px;gap:7px;}
.btn-sm svg{width:13px;height:13px;}

/* ---------- placeholder / status chips ---------- */
.ph{
  display:inline-flex;
  align-items:center;
  gap:6px;
  border:1px dashed var(--line-strong);
  border-radius:999px;
  padding:5px 13px;
  font-family:'Inter',system-ui,sans-serif;
  font-size:12px;
  color:var(--ink-muted);
  background:var(--paper-raised);
}
.ph::before{content:"✎";opacity:.7;}
.chip{
  display:inline-flex;
  align-items:center;
  border-radius:999px;
  padding:7px 15px;
  font-family:'Inter',system-ui,sans-serif;
  font-size:12px;
  color:var(--ink);
  background:var(--paper-raised);
  border:1px solid var(--line);
  box-shadow:var(--shadow-sm);
}
.ph-block{
  border:1.5px dashed var(--line-strong);
  border-radius:14px;
  color:var(--ink-muted);
  font-family:'Inter',system-ui,sans-serif;
  font-size:12px;
  display:flex;
  align-items:center;
  justify-content:center;
  text-align:center;
  padding:18px;
  gap:8px;
  background:var(--paper-raised);
}

/* ---------- generic section shell ---------- */
section{padding-block:clamp(56px,9vw,100px);}
.section-head{
  display:flex;
  align-items:baseline;
  gap:16px;
  margin-bottom:36px;
}
.section-num{
  font-family:'Inter',system-ui,sans-serif;
  font-size:12.5px;
  color:var(--accent);
}
.section-head h2{
  font-size:clamp(32px,4.8vw,50px);
}
.eyebrow{
  font-family:'Inter',system-ui,sans-serif;
  font-size:12px;
  font-weight:500;
  letter-spacing:.04em;
  color:var(--accent);
  display:flex;
  align-items:center;
  gap:10px;
  margin-bottom:24px;
}
.eyebrow::before{
  content:"";
  width:7px;height:7px;
  border-radius:50%;
  background:var(--accent);
  flex:none;
}
.divider-tab{
  display:flex;
  align-items:center;
  gap:10px;
  color:var(--ink-muted);
}
.divider-tab svg{width:14px;height:14px;flex:none;opacity:.5;}
.divider-tab hr{flex:1;border:0;border-top:1px solid var(--line);margin:0;}

/* ---------- tag / profile links ---------- */
.tag-link{
  display:inline-flex;
  align-items:center;
  gap:8px;
  border:1px solid var(--line);
  border-radius:999px;
  padding:10px 16px 10px 13px;
  text-decoration:none;
  font-family:'Inter',system-ui,sans-serif;
  font-size:14.5px;
  font-weight:600;
  color:var(--ink);
  background:var(--paper-raised);
  box-shadow:var(--shadow-sm);
  transition:transform .18s cubic-bezier(.2,.7,.3,1), box-shadow .18s ease, border-color .18s ease;
}
.tag-link:hover{transform:translateY(-2px);box-shadow:var(--shadow-md);border-color:var(--line-strong);}
.tag-link svg{width:16px;height:16px;color:var(--accent);flex:none;}

/* ---------- footer ---------- */
footer.site{
  padding-block:36px 48px;
  text-align:center;
  font-family:'Inter',system-ui,sans-serif;
  font-size:12px;
  color:var(--ink-muted);
  border-top:1px solid var(--line);
}
footer.site a{text-decoration:none;color:var(--ink);}
footer.site .domain{color:var(--accent);}

/* ---------- scroll reveal ---------- */
[data-reveal]{
  opacity:0;
  transform:translateY(28px);
  transition:opacity .8s cubic-bezier(.16,.8,.24,1), transform .8s cubic-bezier(.16,.8,.24,1);
  transition-delay:var(--d,0ms);
  will-change:opacity, transform;
}
[data-reveal].is-visible{opacity:1;transform:none;}
@media (prefers-reduced-motion:reduce){
  [data-reveal]{opacity:1!important;transform:none!important;transition:none!important;}
}

/* ---------- parallax ---------- */
[data-parallax]{will-change:transform;}

/* ---------- focus states ---------- */
:focus-visible{
  outline:2px solid var(--accent);
  outline-offset:3px;
  border-radius:8px;
}
.tag-link:focus-visible, .btn:focus-visible, .chip:focus-visible{border-radius:999px;}

/* ---------- breakout (editorial full-bleed) ---------- */
.breakout{
  width:100vw;
  margin-left:calc(50% - 50vw);
  margin-right:calc(50% - 50vw);
}
.breakout-wide{
  max-width:1440px;
  margin-inline:auto;
  padding-inline:24px;
}

/* ---------- page load curtain ---------- */
@media (prefers-reduced-motion:no-preference){
  body{animation:pageIn .5s ease both;}
  @keyframes pageIn{
    from{opacity:0;}
    to{opacity:1;}
  }
}

/* ---------- dark-mode ambient glow ---------- */
.glow{
  position:relative;
  isolation:isolate;
}
.glow::before{
  content:"";
  position:absolute;
  inset:-20% -10% auto -10%;
  height:70%;
  background:radial-gradient(ellipse at 30% 0%, color-mix(in srgb, var(--accent) 16%, transparent), transparent 60%);
  pointer-events:none;
  z-index:-1;
  opacity:0;
}
:root[data-theme="dark"] .glow::before{opacity:1;}
@media (prefers-color-scheme: dark){ :root:not([data-theme="light"]) .glow::before{opacity:1;} }