/* =========================================================================
   Andrade Soluções — sistema de design compartilhado
   Usado por: index.html, blog.html, artigo.html, admin.html
   ========================================================================= */
:root{
  --ink: #172A1D;
  --ink-2: #1F3826;
  --ink-3: #274630;
  --paper: #F6F8F2;
  --paper-2: #ECF1E4;
  --accent: #298E42;
  --accent-light: #9CC83A;
  --gold: #6FA82E;
  --brick: #B54B3A;
  --text-soft: #A9C0AC;
  --text-soft-2: #6E8071;
  --ink-muted: #56604E;
  --radius: 2px;
  --maxw: 1180px;
  --serif: 'Fraunces', serif;
  --sans: 'IBM Plex Sans', sans-serif;
  --mono: 'IBM Plex Mono', monospace;
}
*{ box-sizing:border-box; }
html{ scroll-behavior:smooth; }
body{
  margin:0;
  font-family:var(--sans);
  background:var(--paper);
  color:var(--ink);
  line-height:1.55;
  -webkit-font-smoothing:antialiased;
}
img{ max-width:100%; display:block; }
a{ color:inherit; text-decoration:none; }
.wrap{ max-width:var(--maxw); margin:0 auto; padding:0 28px; }
section{ position:relative; }

::selection{ background:var(--accent-light); color:var(--ink); }

/* focus visibility (a11y) */
a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible, select:focus-visible{
  outline:2px solid var(--accent-light); outline-offset:3px;
}

.eyebrow{
  font-family:var(--mono);
  font-size:12.5px;
  letter-spacing:.14em;
  text-transform:uppercase;
  display:inline-flex;
  align-items:center;
  gap:10px;
  color:var(--gold);
  margin:0 0 18px;
}
.eyebrow::before{
  content:"§";
  font-family:var(--serif);
  font-style:italic;
  font-size:16px;
}
.on-paper .eyebrow{ color:var(--accent); }

h1,h2,h3{ font-family:var(--serif); font-weight:600; margin:0; letter-spacing:-.01em; }
.h2{ font-size:clamp(28px,4vw,42px); line-height:1.08; }
.lede{ font-family:var(--sans); font-size:17px; color:var(--text-soft-2); max-width:52ch; margin:16px 0 0; }
.on-dark .lede{ color:var(--text-soft); }

em{ font-style:italic; color:var(--accent); }
.on-dark em{ color:var(--accent-light); }

/* ---------- NAV ---------- */
header{
  position:sticky; top:0; z-index:50;
  background:var(--ink);
  border-bottom:1px solid rgba(255,255,255,.08);
}
nav.wrap{
  display:flex; align-items:center; justify-content:space-between;
  height:78px;
}
.brand{ display:flex; flex-direction:column; line-height:1; transition:opacity .2s; }
.brand:hover{ opacity:.85; }
.brand-logo{ display:block; height:36px; width:auto; max-width:min(190px,52vw); object-fit:contain; opacity:.9; }
.foot-brand .brand-logo{ height:40px; max-width:215px; opacity:.85; }
.brand-word{
  font-family:var(--serif); font-weight:600; font-style:italic;
  font-size:22px; letter-spacing:.01em; color:var(--paper);
  display:inline-flex; align-items:baseline; gap:6px;
}
.brand-word .dot{ color:var(--accent-light); font-size:26px; line-height:0; }
.foot-brand .brand-word{ margin-bottom:6px; font-size:24px; }
.navlinks{ display:flex; gap:32px; align-items:center; }
.navlinks a{
  font-size:14px; color:var(--text-soft); transition:color .2s;
  position:relative;
}
.navlinks a:not(.navcta)::after{
  content:""; position:absolute; left:0; bottom:-6px; width:0; height:1px;
  background:var(--accent-light); transition:width .25s ease;
}
.navlinks a:not(.navcta):hover::after{ width:100%; }
.navlinks a:hover{ color:var(--paper); }
.navlinks a.is-active{ color:var(--paper); }
.navlinks a.is-active:not(.navcta)::after{ width:100%; }
.navcta{
  font-family:var(--mono); font-size:12.5px; letter-spacing:.04em;
  color:var(--ink) !important; background:var(--gold);
  padding:11px 20px; border-radius:var(--radius);
  transition:background .2s, transform .2s, box-shadow .2s;
  white-space:nowrap;
}
.navcta:hover{ background:#DDAE47; transform:translateY(-1px); box-shadow:0 8px 20px rgba(41,142,66,.4); }
.burger{ display:none; background:none; border:0; color:var(--paper); font-size:26px; cursor:pointer; }

@media (max-width:980px){
  .navlinks{ position:fixed; inset:78px 0 0 0; background:var(--ink); flex-direction:column;
    padding:34px 28px; gap:22px; transform:translateX(100%); transition:transform .3s; }
  .navlinks.open{ transform:translateX(0); }
  .burger{ display:block; }
  .foot-grid{ grid-template-columns:1fr !important; gap:36px !important; }
}

/* ---------- BUTTONS ---------- */
.btn{
  font-family:var(--mono); font-size:13px; letter-spacing:.03em;
  padding:15px 26px; border-radius:var(--radius); display:inline-flex; align-items:center; gap:10px;
  transition:transform .2s, background .2s, border-color .2s, box-shadow .2s;
  cursor:pointer; border:0;
}
.btn-primary{ background:var(--accent); color:#fff; }
.btn-primary:hover{ background:var(--accent-light); transform:translateY(-2px); box-shadow:0 10px 26px rgba(41,142,66,.35); }
.btn-ghost{ border:1px solid rgba(242,236,222,.3); color:var(--paper); background:none; }
.btn-ghost:hover{ border-color:var(--paper); }
.btn-ghost.on-paper-btn{ border-color:rgba(23,42,29,.25); color:var(--ink); }
.btn-ghost.on-paper-btn:hover{ border-color:var(--ink); }
.btn-sm{ padding:9px 16px; font-size:12px; }
.btn-danger{ background:transparent; color:var(--brick); border:1px solid rgba(181,75,58,.4); }
.btn-danger:hover{ background:rgba(181,75,58,.1); }

/* ---------- SECTION GENERIC ---------- */
.section{ padding:96px 0; }
.on-dark{ background:var(--ink); color:var(--paper); }
.on-paper{ background:var(--paper); color:var(--ink); }
.section-head{ max-width:640px; margin-bottom:56px; }
.section-head.center{ margin-left:auto; margin-right:auto; text-align:center; }

/* ---------- CTA STRIP ---------- */
.cta-strip{
  background:linear-gradient(120deg, var(--accent), #1D5E2C);
  color:#fff; padding:64px 0; text-align:center; position:relative; overflow:hidden;
}
.cta-strip::before{
  content:""; position:absolute; inset:-40% -10% auto auto; width:520px; height:520px;
  background:radial-gradient(circle, rgba(255,255,255,.14), transparent 65%);
  animation:driftGlow 16s ease-in-out infinite alternate; pointer-events:none;
}
.cta-strip h2{ color:#fff; font-size:clamp(24px,3.4vw,36px); }
.cta-strip p{ color:rgba(255,255,255,.85); max-width:52ch; margin:14px auto 30px; }
.cta-strip .btn-primary{ background:#fff; color:var(--accent); }
.cta-strip .btn-primary:hover{ background:var(--paper); }

/* ---------- FOOTER ---------- */
footer{ background:var(--ink); color:var(--text-soft); padding:70px 0 30px; border-top:1px solid rgba(242,236,222,.1); }
.foot-grid{ display:grid; grid-template-columns:1.4fr 1fr 1fr; gap:50px; }
.foot-brand .name{ font-family:var(--serif); font-style:italic; color:var(--paper); font-size:24px; }
.foot-brand p{ font-size:13.5px; margin:16px 0 0; max-width:38ch; }
.foot-col h4{ font-family:var(--mono); font-size:11px; letter-spacing:.1em; text-transform:uppercase; color:var(--gold); margin:0 0 18px; font-weight:500; }
.foot-col a, .foot-col li{ display:block; font-size:14px; margin-bottom:10px; color:var(--text-soft); list-style:none; }
.foot-col a:hover{ color:var(--paper); }
.foot-bottom{
  margin-top:56px; padding-top:24px; border-top:1px solid rgba(242,236,222,.08);
  display:flex; justify-content:space-between; flex-wrap:wrap; gap:12px;
  font-family:var(--mono); font-size:11.5px; color:var(--text-soft-2);
}

/* ---------- SCROLL PROGRESS ---------- */
.scroll-progress{
  position:fixed; top:0; left:0; height:3px; width:0%;
  background:linear-gradient(90deg, var(--accent), var(--accent-light));
  z-index:100; transition:width .1s linear;
}

/* ---------- REVEAL ON SCROLL ---------- */
.reveal{ opacity:0; transform:translateY(28px); transition:opacity .7s ease, transform .7s ease; }
.reveal.is-visible{ opacity:1; transform:translateY(0); }

@keyframes driftGlow{
  0%{ transform:translate(0,0) scale(1); }
  100%{ transform:translate(-40px,60px) scale(1.15); }
}
@keyframes floatY{
  0%,100%{ transform:translateY(0); }
  50%{ transform:translateY(-8px); }
}
@keyframes fadeUp{
  from{ opacity:0; transform:translateY(16px); }
  to{ opacity:1; transform:translateY(0); }
}
@keyframes shimmer{
  0%{ background-position:-400px 0; }
  100%{ background-position:400px 0; }
}

.skeleton{
  background:linear-gradient(90deg, rgba(255,255,255,.06) 25%, rgba(255,255,255,.14) 37%, rgba(255,255,255,.06) 63%);
  background-size:400px 100%;
  animation:shimmer 1.4s ease infinite;
  border-radius:var(--radius);
}
.on-paper .skeleton{
  background:linear-gradient(90deg, rgba(23,42,29,.06) 25%, rgba(23,42,29,.12) 37%, rgba(23,42,29,.06) 63%);
  background-size:400px 100%;
}

/* Chip / tag pill used for categories */
.pill{
  display:inline-flex; align-items:center; gap:6px; font-family:var(--mono); font-size:11px;
  letter-spacing:.04em; text-transform:uppercase; padding:6px 12px; border-radius:20px;
  border:1px solid rgba(156,200,58,.4); color:var(--accent-light); background:rgba(156,200,58,.08);
  transition:background .2s, color .2s, border-color .2s, transform .2s;
}
.on-paper .pill{ color:var(--accent); border-color:rgba(41,142,66,.3); background:rgba(41,142,66,.06); }
.pill:hover{ transform:translateY(-1px); }
.pill.is-active{ background:var(--accent); border-color:var(--accent); color:#fff; }

@media (prefers-reduced-motion: reduce){
  .reveal{ opacity:1; transform:none; transition:none; }
  *{ animation-duration:.001ms !important; animation-iteration-count:1 !important; }
}