/* =========================================================
   Papel Zero — folha de estilos compartilhada
   ========================================================= */
:root{
  --ink:#1A2530;
  --ink-soft:#3C4A57;
  --paper:#F2EEE3;
  --paper-2:#EAE3D2;
  --kraft:#DCCBA3;
  --kraft-line:#C4AF80;
  --stamp:#B23A2E;
  --stamp-dark:#8E2C22;
  --pine:#3F6250;
  --pine-light:#5C8770;
  --paper-white:#FBF9F3;
  --shadow:0 1px 0 rgba(26,37,48,0.06);
  --radius:3px;
}

*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:'Inter', sans-serif;
  -webkit-font-smoothing:antialiased;
}
::selection{background:var(--stamp); color:#fff;}
a{color:inherit; text-decoration:none;}

h1,h2,h3,.display{
  font-family:'Fraunces', serif;
  font-weight:600;
  letter-spacing:-0.01em;
  margin:0;
}
.mono{font-family:'IBM Plex Mono', monospace;}

body::before{
  content:"";
  position:fixed; inset:0;
  pointer-events:none;
  z-index:0;
  opacity:0.5;
  background-image:radial-gradient(circle at 1px 1px, rgba(26,37,48,0.045) 1px, transparent 0);
  background-size:22px 22px;
}

.wrap{max-width:1040px; margin:0 auto; padding:0 28px; position:relative; z-index:1;}

/* ===== Navbar (all pages) ===== */
header.site{background:var(--ink); color:var(--paper-white); position:relative;}
.nav-row{
  display:flex; align-items:center; justify-content:space-between;
  padding:18px 0;
}
.brand{display:flex; align-items:center; gap:10px;}
.brand-mark{
  width:34px; height:34px; border-radius:50%;
  border:1.5px solid var(--stamp); color:var(--stamp);
  display:flex; align-items:center; justify-content:center;
  font-family:'IBM Plex Mono', monospace; font-size:11px; font-weight:600;
  transform:rotate(-8deg); flex-shrink:0;
}
.brand-name{font-family:'Fraunces', serif; font-weight:600; font-size:20px; color:#fff;}

.nav-links{display:flex; align-items:center; gap:26px;}
.nav-link{
  font-family:'IBM Plex Mono', monospace; font-size:12.5px;
  color:rgba(242,238,227,0.68);
  padding:6px 0; border-bottom:1.5px solid transparent;
  white-space:nowrap;
}
.nav-link:hover{color:#fff;}
.nav-link.active{color:var(--kraft-line); border-bottom-color:var(--kraft-line);}

.privacy-pill{
  font-family:'IBM Plex Mono', monospace; font-size:11px;
  color:var(--pine-light);
  border:1px solid rgba(92,135,112,0.55);
  padding:5px 11px; border-radius:100px;
  display:flex; align-items:center; gap:6px; white-space:nowrap;
}
.privacy-pill .dot{width:6px; height:6px; border-radius:50%; background:var(--pine-light);}

.nav-toggle{
  display:none; background:none; border:1px solid rgba(255,255,255,0.25);
  color:#fff; border-radius:4px; padding:8px 10px; cursor:pointer;
}
.nav-mobile{display:none;}

@media (max-width:900px){
  .nav-links, .privacy-pill{display:none;}
  .nav-toggle{display:block;}
  .nav-mobile{
    display:none; flex-direction:column; gap:2px;
    padding:10px 0 20px;
    border-top:1px solid rgba(255,255,255,0.12);
  }
  .nav-mobile.open{display:flex;}
  .nav-mobile .nav-link{padding:10px 4px; border-bottom:1px solid rgba(255,255,255,0.08);}
}

/* ===== Page hero (tool pages) ===== */
.page-hero{padding:44px 0 30px; background:var(--ink); color:#fff;}
.hero-eyebrow{
  font-family:'IBM Plex Mono', monospace; font-size:12px;
  letter-spacing:0.08em; text-transform:uppercase; color:var(--kraft-line);
  margin-bottom:12px;
}
.page-hero h1{font-size:clamp(28px,4.4vw,42px); line-height:1.08; max-width:20ch;}
.page-hero h1 em{font-style:normal; color:var(--kraft-line);}
.page-hero p{max-width:52ch; color:rgba(242,238,227,0.72); font-size:15.5px; line-height:1.55; margin-top:14px;}

/* ===== Home hero ===== */
.home-hero{padding:60px 0 50px; background:var(--ink); color:#fff;}
.home-hero h1{font-size:clamp(34px,5.6vw,56px); line-height:1.04; max-width:15ch;}
.home-hero h1 em{font-style:normal; color:var(--kraft-line);}
.home-hero p{max-width:50ch; color:rgba(242,238,227,0.74); font-size:16.5px; line-height:1.6; margin-top:18px;}

/* ===== Tool grid (home) ===== */
.tool-section{padding:52px 0 80px;}
.tool-grid{display:grid; grid-template-columns:repeat(3,1fr); gap:18px; margin-top:28px;}
.tool-card{
  display:block; background:var(--paper-white); border:1px solid var(--kraft-line);
  border-radius:4px; padding:26px 22px; box-shadow:var(--shadow);
  transition:transform .15s ease, border-color .15s ease;
}
.tool-card:hover{transform:translateY(-3px); border-color:var(--stamp);}
.tool-card .tc-num{font-family:'IBM Plex Mono', monospace; font-size:11px; color:var(--pine); letter-spacing:.08em;}
.tool-card h3{font-size:19px; margin-top:10px;}
.tool-card p{font-size:13.5px; color:var(--ink-soft); line-height:1.5; margin-top:8px;}
.tool-card .tc-arrow{margin-top:16px; font-family:'IBM Plex Mono', monospace; font-size:13px; color:var(--stamp); font-weight:600;}

@media (max-width:760px){.tool-grid{grid-template-columns:1fr;}}

/* ===== Shared tool-page layout ===== */
main{position:relative; z-index:1;}
.tool-body{padding:40px 0 90px;}

.dropzone{
  border:2px dashed var(--kraft-line); background:var(--paper-white); border-radius:4px;
  padding:48px 24px; text-align:center; cursor:pointer;
  transition:border-color .15s ease, background .15s ease;
}
.dropzone:hover, .dropzone.drag{border-color:var(--stamp); background:#fff;}
.dropzone .dz-icon{width:46px; height:46px; margin:0 auto 14px; color:var(--ink-soft);}
.dropzone .dz-title{font-family:'Fraunces', serif; font-size:19px; font-weight:600; margin-bottom:6px;}
.dropzone .dz-sub{font-size:13.5px; color:var(--ink-soft);}
.dropzone input{display:none;}

.file-row{
  display:flex; align-items:center; gap:14px; padding:14px 18px;
  border:1px solid var(--kraft-line); border-radius:var(--radius);
  background:var(--paper-white); margin-top:12px;
}
.file-row.draggable{cursor:grab;}
.file-row.dragging{opacity:0.4;}
.file-icon{
  width:34px; height:40px; flex-shrink:0; background:var(--stamp); color:#fff;
  border-radius:2px; display:flex; align-items:center; justify-content:center;
  font-family:'IBM Plex Mono', monospace; font-size:9px; font-weight:600;
}
.file-order{
  width:24px; height:24px; border-radius:50%; background:var(--ink); color:#fff;
  font-family:'IBM Plex Mono', monospace; font-size:11px; flex-shrink:0;
  display:flex; align-items:center; justify-content:center;
}
.file-meta{flex:1; min-width:0;}
.file-name{font-size:14px; font-weight:600; overflow:hidden; text-overflow:ellipsis; white-space:nowrap;}
.file-size{font-family:'IBM Plex Mono', monospace; font-size:12px; color:var(--ink-soft); margin-top:2px;}
.file-remove{background:none; border:none; cursor:pointer; color:var(--ink-soft); font-size:18px; line-height:1; padding:4px 6px;}
.file-remove:hover{color:var(--stamp);}

.quality-grid{display:grid; grid-template-columns:repeat(3,1fr); gap:12px; margin-top:22px;}
.quality-card{
  border:1.5px solid var(--kraft-line); border-radius:var(--radius); padding:16px 14px;
  cursor:pointer; background:var(--paper-white);
  transition:border-color .15s ease, background .15s ease;
}
.quality-card:hover{border-color:var(--ink-soft);}
.quality-card.selected{border-color:var(--pine); background:#F3F7F4;}
.quality-card .q-label{font-weight:700; font-size:14.5px;}
.quality-card .q-desc{font-size:12.5px; color:var(--ink-soft); margin-top:4px; line-height:1.4;}
.quality-card .q-mono{font-family:'IBM Plex Mono', monospace; font-size:11px; color:var(--pine); margin-top:8px;}

.mode-toggle{display:flex; gap:10px; margin-top:22px; flex-wrap:wrap;}
.mode-pill{
  border:1.5px solid var(--kraft-line); border-radius:100px; padding:10px 18px;
  font-family:'IBM Plex Mono', monospace; font-size:12.5px; cursor:pointer; background:var(--paper-white);
}
.mode-pill.selected{border-color:var(--pine); background:#F3F7F4; color:var(--pine); font-weight:600;}

.section-label{
  font-family:'IBM Plex Mono', monospace; font-size:12px; letter-spacing:0.06em;
  text-transform:uppercase; color:var(--ink-soft); margin:28px 0 10px;
}

.btn{
  font-family:'Inter', sans-serif; font-weight:600; font-size:15px; padding:14px 26px;
  border-radius:3px; border:none; cursor:pointer; display:inline-flex; align-items:center; gap:10px;
  transition:transform .1s ease, background .15s ease;
}
.btn:active{transform:translateY(1px);}
.btn-primary{background:var(--stamp); color:#fff;}
.btn-primary:hover{background:var(--stamp-dark);}
.btn-primary:disabled{background:#C9BFA9; color:#8a8371; cursor:not-allowed;}
.btn-ghost{background:transparent; color:var(--ink); border:1.5px solid var(--ink);}
.btn-ghost:hover{background:var(--ink); color:#fff;}

.actions-row{margin-top:26px; display:flex; align-items:center; gap:16px; flex-wrap:wrap;}

.progress-wrap{margin-top:20px; display:none;}
.progress-wrap.show{display:block;}
.progress-label{font-family:'IBM Plex Mono', monospace; font-size:12px; color:var(--ink-soft); margin-bottom:8px; display:flex; justify-content:space-between;}
.progress-track{height:6px; background:var(--paper-2); border-radius:6px; overflow:hidden;}
.progress-bar{height:100%; width:0%; background:var(--pine); transition:width .2s ease;}

.result{margin-top:34px; display:none;}
.result.show{display:flex; gap:28px; align-items:center; flex-wrap:wrap;}
.stamp-badge{
  border:3px solid var(--stamp); color:var(--stamp); border-radius:10px; padding:14px 22px;
  transform:rotate(-6deg); text-align:center; font-family:'IBM Plex Mono', monospace;
  flex-shrink:0; -webkit-mask-image:radial-gradient(circle, #000 96%, transparent 100%);
}
.stamp-badge.pine{border-color:var(--pine); color:var(--pine);}
.stamp-badge .stamp-pct{font-size:30px; font-weight:700; line-height:1;}
.stamp-badge .stamp-txt{font-size:10.5px; letter-spacing:0.12em; margin-top:4px;}
.result-meta{flex:1; min-width:220px;}
.result-sizes{display:flex; gap:26px; margin-bottom:16px; flex-wrap:wrap;}
.rs-label{font-family:'IBM Plex Mono', monospace; font-size:11px; color:var(--ink-soft); text-transform:uppercase; letter-spacing:.05em;}
.rs-value{font-family:'IBM Plex Mono', monospace; font-size:20px; font-weight:600; margin-top:3px; display:block;}
.rs-value.old{color:var(--ink-soft); text-decoration:line-through; text-decoration-color:var(--stamp);}
.rs-value.new{color:var(--pine);}

.thumb-grid{display:grid; grid-template-columns:repeat(auto-fill,minmax(120px,1fr)); gap:14px; margin-top:18px;}
.thumb{border:1px solid var(--kraft-line); background:var(--paper-white); border-radius:var(--radius); overflow:hidden; position:relative; cursor:grab;}
.thumb.dragging{opacity:0.4;}
.thumb img{width:100%; height:110px; object-fit:cover; display:block;}
.thumb .thumb-order{position:absolute; top:6px; left:6px; background:var(--ink); color:#fff; font-family:'IBM Plex Mono', monospace; font-size:11px; width:20px; height:20px; border-radius:50%; display:flex; align-items:center; justify-content:center;}
.thumb .thumb-remove{position:absolute; top:6px; right:6px; background:rgba(26,37,48,0.75); color:#fff; border:none; border-radius:50%; width:20px; height:20px; cursor:pointer; font-size:13px; line-height:1;}
.thumb .thumb-name{font-size:10.5px; padding:5px 7px; color:var(--ink-soft); white-space:nowrap; overflow:hidden; text-overflow:ellipsis;}
.thumb .thumb-download{display:block; text-align:center; font-family:'IBM Plex Mono', monospace; font-size:10.5px; padding:6px; background:var(--paper-2); color:var(--ink);}
.thumb .thumb-download:hover{background:var(--pine); color:#fff;}

.options-row{display:flex; gap:22px; flex-wrap:wrap; margin-top:18px;}
.option-group label{font-family:'IBM Plex Mono', monospace; font-size:11px; text-transform:uppercase; letter-spacing:.05em; color:var(--ink-soft); display:block; margin-bottom:8px;}
select.styled, input.styled{
  font-family:'Inter', sans-serif; font-size:14px; padding:9px 12px;
  border:1.5px solid var(--kraft-line); border-radius:3px; background:#fff; color:var(--ink);
}
input.styled{width:90px;}
.range-row{display:flex; align-items:center; gap:10px;}

.note-box{
  margin-top:22px; padding:14px 16px; border-left:3px solid var(--kraft-line);
  background:var(--paper-2); font-size:13px; color:var(--ink-soft); line-height:1.5;
}

footer{
  background:var(--ink); color:rgba(242,238,227,0.55); padding:26px 0;
  font-size:12.5px; font-family:'IBM Plex Mono', monospace; text-align:center;
}
footer strong{color:rgba(242,238,227,0.85);}

.visually-hidden{position:absolute; width:1px; height:1px; overflow:hidden; clip:rect(0 0 0 0);}
button:focus-visible, .tab-btn:focus-visible, .dropzone:focus-visible, .quality-card:focus-visible, .mode-pill:focus-visible, a:focus-visible{
  outline:2px solid var(--stamp); outline-offset:2px;
}

@media (max-width:620px){
  .quality-grid{grid-template-columns:1fr;}
  .options-row{flex-direction:column;}
}

@media (prefers-reduced-motion: reduce){
  *{transition:none !important; animation:none !important;}
}