/* PixelFree Tools — design system
   Palette: graphite ink on warm-white, one confident signal blue, grounded green/red for state.
   Type: Sora (display, technical geometric) + Inter (body) + IBM Plex Mono (data/numbers — the tool's precision cue). */

:root{
  --bg:#FAFAF8;
  --surface:#FFFFFF;
  --surface-sunken:#F3F4F2;
  --ink:#15171B;
  --ink-soft:#5B616B;
  --ink-faint:#8A8F98;
  --border:#E5E7E3;
  --border-strong:#D3D6D1;
  --accent:#2551E8;
  --accent-ink:#1B3AB0;
  --accent-soft:#EAEFFE;
  --signal:#12805C;
  --signal-soft:#E6F5EF;
  --warn:#C2410C;
  --warn-soft:#FDEEE7;
  --danger:#B3261E;
  --danger-soft:#FBEAE8;
  --radius-s:6px;
  --radius-m:10px;
  --radius-l:16px;
  --shadow-1:0 1px 2px rgba(20,22,25,.06);
  --shadow-2:0 8px 24px rgba(20,22,25,.08);
  --maxw:1180px;
  --font-display:'Sora',ui-sans-serif,system-ui,-apple-system,'Segoe UI',sans-serif;
  --font-body:'Inter',ui-sans-serif,system-ui,-apple-system,'Segoe UI',sans-serif;
  --font-mono:'IBM Plex Mono',ui-monospace,'SF Mono',Menlo,monospace;
}

*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;background:var(--bg);color:var(--ink);
  font-family:var(--font-body);font-size:16px;line-height:1.55;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit}
button{font-family:inherit}
h1,h2,h3{font-family:var(--font-display);font-weight:650;letter-spacing:-0.02em;line-height:1.15;margin:0 0 .5em}
h1{font-size:clamp(1.9rem,4.4vw,3rem)}
h2{font-size:clamp(1.4rem,2.6vw,1.9rem)}
h3{font-size:1.15rem}
p{margin:0 0 1em}
.mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 20px}
.visually-hidden{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
@media (prefers-reduced-motion: reduce){*{animation-duration:.001ms !important;transition-duration:.001ms !important}}

/* ---------- Header ---------- */
.site-header{position:sticky;top:0;z-index:40;background:rgba(250,250,248,.92);backdrop-filter:saturate(140%) blur(8px);border-bottom:1px solid var(--border)}
.site-header .bar{display:flex;align-items:center;gap:28px;height:64px}
.brand{display:flex;align-items:center;gap:10px;font-family:var(--font-display);font-weight:700;font-size:1.08rem;text-decoration:none;color:var(--ink)}
.brand-mark{width:22px;height:22px;display:grid;grid-template-columns:repeat(3,1fr);grid-template-rows:repeat(3,1fr);gap:2px;flex:none}
.brand-mark i{background:var(--accent);border-radius:1px}
.brand-mark i:nth-child(2),.brand-mark i:nth-child(4),.brand-mark i:nth-child(6),.brand-mark i:nth-child(8){background:var(--ink)}
.brand-mark i:nth-child(5){background:var(--signal)}
.main-nav{display:none;gap:22px;font-size:.94rem}
.main-nav a{text-decoration:none;color:var(--ink-soft);padding:8px 0;border-bottom:2px solid transparent}
.main-nav a:hover{color:var(--ink)}
.header-right{margin-left:auto;display:flex;align-items:center;gap:10px}
.btn-alltools{display:none}
.hamburger{border:1px solid var(--border-strong);background:var(--surface);border-radius:var(--radius-s);width:40px;height:40px;display:flex;align-items:center;justify-content:center;cursor:pointer}
.hamburger span,.hamburger span::before,.hamburger span::after{content:'';display:block;width:18px;height:2px;background:var(--ink);position:relative;transition:transform .15s}
.hamburger span::before{position:absolute;top:-6px}
.hamburger span::after{position:absolute;top:6px}
.mobile-nav{display:none;flex-direction:column;border-top:1px solid var(--border);background:var(--surface)}
.mobile-nav.open{display:flex}
.mobile-nav a{padding:14px 20px;text-decoration:none;color:var(--ink);border-bottom:1px solid var(--border);font-size:.98rem}
@media(min-width:900px){
  .main-nav{display:flex}
  .btn-alltools{display:inline-flex}
  .hamburger{display:none}
}

/* ---------- Buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border-radius:var(--radius-m);padding:12px 20px;font-size:.95rem;font-weight:600;text-decoration:none;border:1px solid transparent;cursor:pointer;transition:transform .08s ease, box-shadow .15s ease, background .15s ease}
.btn:active{transform:translateY(1px)}
.btn-primary{background:var(--accent);color:#fff}
.btn-primary:hover{background:var(--accent-ink)}
.btn-secondary{background:var(--surface);color:var(--ink);border-color:var(--border-strong)}
.btn-secondary:hover{border-color:var(--ink)}
.btn-ghost{background:transparent;color:var(--ink-soft);border-color:transparent;padding:12px 14px}
.btn-ghost:hover{color:var(--ink)}
.btn-download{background:var(--signal);color:#fff;font-size:1.02rem;padding:14px 26px;box-shadow:var(--shadow-1)}
.btn-download:hover{background:#0E6B4B}
.btn[disabled]{opacity:.5;cursor:not-allowed}
.btn-block{width:100%}

/* ---------- Hero / search ---------- */
.hero{padding:64px 0 40px;text-align:center}
.hero .eyebrow{display:inline-block;font-size:.8rem;letter-spacing:.06em;text-transform:uppercase;color:var(--accent);background:var(--accent-soft);padding:6px 12px;border-radius:99px;margin-bottom:18px;font-weight:600}
.hero h1{max-width:820px;margin-left:auto;margin-right:auto}
.hero .sub{max-width:620px;margin:0 auto 28px;color:var(--ink-soft);font-size:1.08rem}
.hero-actions{display:flex;gap:12px;justify-content:center;flex-wrap:wrap;margin-bottom:36px}
.search-box{max-width:560px;margin:0 auto;position:relative}
.search-box input{width:100%;padding:16px 18px 16px 46px;border-radius:var(--radius-l);border:1.5px solid var(--border-strong);background:var(--surface);font-size:1rem;box-shadow:var(--shadow-1)}
.search-box input:focus{border-color:var(--accent)}
.search-box svg{position:absolute;left:16px;top:50%;transform:translateY(-50%);color:var(--ink-faint)}
.search-hints{margin-top:10px;font-size:.85rem;color:var(--ink-faint)}
.search-hints button{border:none;background:none;color:var(--ink-soft);text-decoration:underline;cursor:pointer;font-size:inherit;padding:0 3px}
#search-results{max-width:560px;margin:14px auto 0;text-align:left;display:none}
#search-results.open{display:block}
#search-results .sr-item{display:flex;justify-content:space-between;align-items:center;padding:12px 14px;background:var(--surface);border:1px solid var(--border);border-top:none;text-decoration:none;color:var(--ink)}
#search-results .sr-item:first-child{border-top:1px solid var(--border);border-radius:var(--radius-m) var(--radius-m) 0 0}
#search-results .sr-item:last-child{border-radius:0 0 var(--radius-m) var(--radius-m)}
#search-results .sr-item:hover{background:var(--surface-sunken)}
#search-results .sr-empty{padding:14px;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-m);color:var(--ink-faint);font-size:.9rem}

/* ---------- Sections ---------- */
.section{padding:44px 0}
.section-head{display:flex;align-items:baseline;justify-content:space-between;gap:16px;margin-bottom:22px;flex-wrap:wrap}
.section-head p{color:var(--ink-soft);margin:0}
.section-head a{font-size:.9rem;font-weight:600;color:var(--accent);text-decoration:none;white-space:nowrap}

/* ---------- Tool cards / grid ---------- */
.tool-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:14px}
.tool-card{display:flex;flex-direction:column;gap:10px;padding:18px;border:1px solid var(--border);border-radius:var(--radius-m);background:var(--surface);text-decoration:none;color:var(--ink);transition:border-color .15s, box-shadow .15s, transform .1s}
.tool-card:hover{border-color:var(--border-strong);box-shadow:var(--shadow-1);transform:translateY(-1px)}
.tool-card .tc-top{display:flex;align-items:center;gap:10px}
.tc-icon{width:34px;height:34px;border-radius:8px;background:var(--accent-soft);color:var(--accent);display:flex;align-items:center;justify-content:center;flex:none}
.tc-icon svg{width:18px;height:18px}
.tc-badge{margin-left:auto;font-size:.68rem;font-weight:700;letter-spacing:.03em;text-transform:uppercase;color:var(--signal);background:var(--signal-soft);padding:3px 8px;border-radius:99px}
.tool-card h3{font-size:1rem;margin:0}
.tool-card p{font-size:.87rem;color:var(--ink-soft);margin:0;flex:1}
.tc-cta{font-size:.85rem;font-weight:600;color:var(--accent)}
.tool-card.popular{background:linear-gradient(180deg,#fff,var(--accent-soft) 260%);border-color:var(--accent);box-shadow:var(--shadow-1)}

/* ---------- Category tabs ---------- */
.cat-tabs{display:flex;gap:8px;overflow-x:auto;padding-bottom:4px;margin-bottom:24px;-webkit-overflow-scrolling:touch}
.cat-tabs a,.cat-tabs button{white-space:nowrap;padding:9px 16px;border-radius:99px;border:1px solid var(--border-strong);background:var(--surface);color:var(--ink-soft);text-decoration:none;font-size:.88rem;font-weight:600;cursor:pointer}
.cat-tabs a.active,.cat-tabs button.active{background:var(--ink);color:#fff;border-color:var(--ink)}

/* ---------- Breadcrumb ---------- */
.breadcrumb{font-size:.85rem;color:var(--ink-faint);margin-bottom:14px}
.breadcrumb a{color:var(--ink-soft);text-decoration:none}
.breadcrumb a:hover{text-decoration:underline}
.breadcrumb span{margin:0 6px}

/* ---------- Tool page layout ---------- */
.tool-hero{padding:28px 0 8px}
.tool-hero h1{margin-bottom:8px}
.tool-hero .lede{color:var(--ink-soft);max-width:680px;font-size:1.02rem}
.privacy-line{display:flex;align-items:center;gap:8px;font-size:.85rem;color:var(--ink-faint);margin-top:14px}
.privacy-line svg{flex:none;color:var(--signal)}

.tool-app{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-l);padding:22px;margin:22px 0 8px;box-shadow:var(--shadow-1)}
@media(min-width:720px){.tool-app{padding:30px}}

.upload-zone{border:2px dashed var(--border-strong);border-radius:var(--radius-m);padding:40px 20px;text-align:center;cursor:pointer;background:var(--surface-sunken);transition:border-color .15s, background .15s}
.upload-zone:hover,.upload-zone.dragover{border-color:var(--accent);background:var(--accent-soft)}
.upload-zone .uz-icon{width:48px;height:48px;margin:0 auto 14px;color:var(--accent)}
.upload-zone h3{margin-bottom:6px;font-size:1.1rem}
.upload-zone .uz-sub{color:var(--ink-soft);font-size:.9rem;margin-bottom:16px}
.upload-zone input[type=file]{display:none}
.uz-meta{margin-top:18px;font-size:.8rem;color:var(--ink-faint);display:flex;gap:14px;justify-content:center;flex-wrap:wrap}
.uz-meta b{color:var(--ink-soft);font-weight:600}

.file-panel{display:flex;gap:16px;align-items:center;flex-wrap:wrap;padding:14px;background:var(--surface-sunken);border-radius:var(--radius-m);border:1px solid var(--border)}
.file-panel .thumb{width:64px;height:64px;object-fit:cover;border-radius:8px;border:1px solid var(--border);background:#fff;flex:none}
.file-panel .fp-info{flex:1;min-width:160px}
.file-panel .fp-info .fname{font-weight:600;font-size:.92rem;word-break:break-all}
.file-panel .fp-info .fmeta{font-size:.82rem;color:var(--ink-soft);font-family:var(--font-mono)}
.file-panel .fp-actions{display:flex;gap:8px}

.settings-panel{margin-top:18px;padding-top:18px;border-top:1px solid var(--border)}
.field-row{display:grid;grid-template-columns:1fr;gap:14px;margin-bottom:14px}
@media(min-width:560px){.field-row.two{grid-template-columns:1fr 1fr}}
.field label{display:block;font-size:.82rem;font-weight:600;color:var(--ink-soft);margin-bottom:6px}
.field input[type=number],.field select,.field input[type=text]{width:100%;padding:10px 12px;border:1px solid var(--border-strong);border-radius:var(--radius-s);font-size:.95rem;font-family:var(--font-mono);background:#fff}
.field input[type=range]{width:100%;accent-color:var(--accent)}
.range-value{font-family:var(--font-mono);font-size:.85rem;color:var(--ink-soft)}
.checkline{display:flex;align-items:center;gap:8px;font-size:.88rem;color:var(--ink-soft)}
.preset-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(140px,1fr));gap:8px;margin-bottom:14px}
.preset-grid button{padding:10px;border:1px solid var(--border-strong);border-radius:var(--radius-s);background:#fff;cursor:pointer;font-size:.85rem;text-align:left}
.preset-grid button.active,.preset-grid button:hover{border-color:var(--accent);background:var(--accent-soft)}

.actions-row{display:flex;gap:10px;margin-top:18px;flex-wrap:wrap}

.processing-state{text-align:center;padding:40px 20px}
.spinner{width:38px;height:38px;border-radius:50%;border:3px solid var(--border);border-top-color:var(--accent);margin:0 auto 16px;animation:spin .8s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}
.progress-track{max-width:320px;margin:16px auto 0;height:6px;border-radius:99px;background:var(--border);overflow:hidden}
.progress-fill{height:100%;background:var(--accent);width:0%;transition:width .15s ease}

.result-state{display:none}
.result-state.open{display:block}
.result-compare{display:grid;grid-template-columns:1fr;gap:14px;margin-bottom:18px}
@media(min-width:640px){.result-compare{grid-template-columns:1fr 1fr}}
.compare-card{border:1px solid var(--border);border-radius:var(--radius-m);overflow:hidden;background:var(--surface-sunken)}
.compare-card .cc-label{padding:8px 12px;font-size:.75rem;font-weight:700;text-transform:uppercase;letter-spacing:.04em;color:var(--ink-soft);background:var(--surface);border-bottom:1px solid var(--border)}
.compare-card img{width:100%;max-height:280px;object-fit:contain;background:repeating-conic-gradient(#f2f2f0 0% 25%, #fff 0% 50%) 50%/16px 16px}
.result-stats{display:grid;grid-template-columns:repeat(2,1fr);gap:10px;margin-bottom:18px}
@media(min-width:560px){.result-stats{grid-template-columns:repeat(4,1fr)}}
.stat{padding:12px;border:1px solid var(--border);border-radius:var(--radius-s);background:var(--surface-sunken)}
.stat .stat-label{font-size:.72rem;color:var(--ink-faint);text-transform:uppercase;letter-spacing:.03em}
.stat .stat-value{font-family:var(--font-mono);font-size:1.05rem;font-weight:600;margin-top:2px}
.stat .stat-value.good{color:var(--signal)}

.error-state{display:none;padding:18px;background:var(--danger-soft);border:1px solid #F0C9C5;border-radius:var(--radius-m);color:var(--danger);font-size:.92rem;margin-top:14px}
.error-state.open{display:flex;align-items:flex-start;gap:10px}

.ocr-text-out{width:100%;min-height:180px;border:1px solid var(--border-strong);border-radius:var(--radius-s);padding:12px;font-family:var(--font-mono);font-size:.9rem;resize:vertical}

/* Crop canvas */
.crop-stage{position:relative;max-width:100%;touch-action:none;background:var(--surface-sunken);border-radius:var(--radius-s);overflow:hidden}
.crop-stage canvas{display:block;max-width:100%;height:auto}

/* ---------- Ads ---------- */
.ad-slot{width:100%;margin:28px 0;display:flex;flex-direction:column;align-items:center;gap:6px}
.ad-slot .ad-label{font-size:.68rem;text-transform:uppercase;letter-spacing:.06em;color:var(--ink-faint)}
.ad-slot .ad-box{width:100%;max-width:728px;min-height:90px;border:1px dashed var(--border-strong);border-radius:var(--radius-s);background:var(--surface-sunken);display:flex;align-items:center;justify-content:center;color:var(--ink-faint);font-size:.8rem}
.ad-slot.ad-rect .ad-box{max-width:336px;min-height:280px}

/* ---------- Content sections on tool pages ---------- */
.content-block{margin-top:8px}
.content-block h2{margin-top:0}
.content-grid{display:grid;grid-template-columns:1fr;gap:28px}
@media(min-width:820px){.content-grid{grid-template-columns:2fr 1fr}}
.faq-item{border-bottom:1px solid var(--border);padding:14px 0}
.faq-item summary{cursor:pointer;font-weight:600;list-style:none;display:flex;justify-content:space-between;gap:12px}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{content:'+';color:var(--accent);font-size:1.2rem}
.faq-item[open] summary::after{content:'−'}
.faq-item p{margin-top:10px;color:var(--ink-soft)}
.related-list{display:flex;flex-direction:column;gap:8px}
.related-list a{display:block;padding:10px 12px;border:1px solid var(--border);border-radius:var(--radius-s);text-decoration:none;color:var(--ink);font-size:.9rem}
.related-list a:hover{border-color:var(--accent);color:var(--accent)}
.tips-list{padding-left:18px;color:var(--ink-soft)}
.tips-list li{margin-bottom:6px}

/* ---------- Category / All tools page ---------- */
.filters-bar{display:flex;gap:10px;align-items:center;flex-wrap:wrap;margin-bottom:22px}
.filters-bar select{padding:9px 12px;border:1px solid var(--border-strong);border-radius:var(--radius-s);font-size:.88rem;background:#fff}
.count-tag{font-size:.85rem;color:var(--ink-faint)}

/* ---------- Footer ---------- */
.site-footer{border-top:1px solid var(--border);margin-top:60px;padding:44px 0 28px;background:var(--surface)}
.footer-grid{display:grid;grid-template-columns:1fr;gap:28px}
@media(min-width:720px){.footer-grid{grid-template-columns:2fr 1fr 1fr 1fr}}
.footer-grid h4{font-size:.8rem;text-transform:uppercase;letter-spacing:.04em;color:var(--ink-faint);margin-bottom:12px}
.footer-grid ul{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:8px}
.footer-grid a{text-decoration:none;color:var(--ink-soft);font-size:.9rem}
.footer-grid a:hover{color:var(--ink)}
.footer-bottom{margin-top:36px;padding-top:20px;border-top:1px solid var(--border);display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px;font-size:.82rem;color:var(--ink-faint)}

/* generic page (about/privacy/terms) */
.prose{max-width:760px}
.prose h2{margin-top:1.6em}
.prose ul{color:var(--ink-soft)}