/* MergeCompress — shared stylesheet (light theme, blue accent) */
:root{
  --bg:#f6f8fc; --paper:#ffffff; --ink:#14213a; --muted:#5a6b8c;
  --line:#dfe6f2; --soft:#eaf1fd; --accent:#1d4ed8; --accent-dark:#1e40af;
  --accent-soft:#eaf1fd; --ok:#15803d; --err:#b91c1c;
  --radius:12px; --shadow:0 8px 30px rgba(20,40,90,.08);
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;background:var(--bg);color:var(--ink);line-height:1.65;-webkit-font-smoothing:antialiased}
img{max-width:100%}
a{color:var(--accent)}
.wrap{width:min(1060px,calc(100% - 32px));margin:0 auto}

/* Header */
.site-header{background:var(--paper);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:50}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:12px 0;flex-wrap:wrap}
.logo{font-size:1.35rem;font-weight:800;color:var(--ink);text-decoration:none;letter-spacing:-.02em}
.logo span{color:var(--accent)}
.main-nav{display:flex;flex-wrap:wrap;gap:4px}
.main-nav a{color:var(--muted);text-decoration:none;font-size:.92rem;font-weight:600;padding:8px 10px;border-radius:8px}
.main-nav a:hover{background:var(--soft);color:var(--accent-dark)}
.main-nav a.active{color:var(--accent-dark);background:var(--soft)}

/* Hero */
.hero{text-align:center;padding:56px 0 36px}
.hero h1{font-size:clamp(2rem,5vw,3.2rem);letter-spacing:-.03em;line-height:1.12;margin-bottom:14px}
.hero h1 .hl{color:var(--accent)}
.hero .lede{font-size:1.12rem;color:var(--muted);max-width:640px;margin:0 auto}
.hero .badges{display:flex;gap:10px;justify-content:center;flex-wrap:wrap;margin-top:20px}
.badge{background:var(--paper);border:1px solid var(--line);border-radius:999px;padding:7px 15px;font-size:.88rem;font-weight:600;color:var(--muted)}
.badge b{color:var(--ok)}

/* Tool grid */
.tool-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(230px,1fr));gap:16px;margin:8px 0 48px}
.tool-card{background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);padding:22px;text-decoration:none;color:var(--ink);box-shadow:var(--shadow);transition:transform .15s,box-shadow .15s;display:block}
.tool-card:hover{transform:translateY(-3px);box-shadow:0 14px 34px rgba(20,40,90,.13)}
.tool-card .icon{font-size:1.9rem;display:block;margin-bottom:10px}
.tool-card h3{font-size:1.08rem;margin-bottom:6px;color:var(--ink)}
.tool-card p{font-size:.9rem;color:var(--muted);margin:0}

/* Content sections */
main.wrap{padding-bottom:40px}
.page-head{padding:40px 0 8px}
.page-head h1{font-size:clamp(1.7rem,4vw,2.5rem);letter-spacing:-.02em;margin-bottom:10px}
.page-head .lede{color:var(--muted);font-size:1.05rem;max-width:720px}
.intro{margin:22px 0;max-width:760px}
.intro p{margin-bottom:14px;color:#33415c}

/* Tool workspace */
.tool{background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:clamp(20px,4vw,36px);margin:26px 0}
.tool h2{font-size:1.25rem;margin-bottom:6px}
.tool .tool-sub{color:var(--muted);font-size:.95rem;margin-bottom:18px}
.dropzone{border:2px dashed var(--line);border-radius:var(--radius);background:var(--bg);min-height:170px;display:grid;place-items:center;text-align:center;padding:28px 20px;cursor:pointer;transition:border-color .2s,background .2s}
.dropzone:hover,.dropzone.dragging{border-color:var(--accent);background:var(--accent-soft)}
.dropzone input{margin-top:12px;max-width:100%}
.dropzone strong{display:block;font-size:1.05rem;margin-bottom:4px}
.dropzone span{color:var(--muted);font-size:.88rem}
.controls{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:14px;margin-top:20px;align-items:end}
label.field{display:block;font-size:.85rem;font-weight:600;color:var(--muted)}
label.field input[type=text],label.field input[type=number],label.field select{width:100%;margin-top:7px;min-height:44px;padding:0 12px;border:1px solid var(--line);border-radius:8px;font:inherit;color:var(--ink);background:#fff}
label.field input[type=range]{width:100%;margin-top:12px;accent-color:var(--accent)}
.field-row{display:flex;align-items:center;gap:10px;margin-top:7px}
.value{min-width:52px;font-variant-numeric:tabular-nums;color:var(--ink);font-weight:700}
.checkbox-row{display:flex;align-items:center;gap:8px;margin-top:10px;font-size:.9rem;color:var(--muted)}
.btn{appearance:none;border:0;cursor:pointer;display:inline-flex;align-items:center;justify-content:center;gap:8px;font-weight:700;border-radius:8px;min-height:46px;padding:0 22px;font-size:1rem;text-decoration:none;transition:background .15s,opacity .15s}
.btn-primary{background:var(--accent);color:#fff}
.btn-primary:hover{background:var(--accent-dark)}
.btn-primary:disabled{opacity:.45;cursor:not-allowed}
.btn-secondary{background:var(--soft);color:var(--accent-dark);border:1px solid var(--line);min-height:40px;padding:0 16px;font-size:.9rem}
.btn-secondary:hover{border-color:var(--accent)}
.status{margin-top:16px;min-height:24px;color:var(--muted);font-size:.93rem}
.status.error{color:var(--err);font-weight:600}
.status.success{color:var(--ok);font-weight:600}
.results{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:14px;margin-top:20px}
.result-card{border:1px solid var(--line);border-radius:10px;background:var(--bg);padding:12px;min-width:0}
.result-card img{width:100%;aspect-ratio:4/3;object-fit:contain;display:block;border-radius:6px;background:#fff}
.file-name{white-space:nowrap;overflow:hidden;text-overflow:ellipsis;font-weight:700;margin:10px 0 2px;font-size:.92rem}
.file-meta{color:var(--muted);font-size:.8rem;margin-bottom:10px}
.file-list{list-style:none;margin-top:16px;display:grid;gap:8px}
.file-list li{display:flex;align-items:center;gap:10px;background:var(--bg);border:1px solid var(--line);border-radius:8px;padding:9px 12px;font-size:.92rem}
.file-list .fname{flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-weight:600}
.file-list .fmeta{color:var(--muted);font-size:.8rem;white-space:nowrap}
.file-list button{border:1px solid var(--line);background:#fff;border-radius:6px;padding:5px 10px;font-size:.8rem;cursor:pointer;font-weight:600}
.file-list button:hover{border-color:var(--accent);color:var(--accent-dark)}
.privacy-note{display:flex;gap:8px;align-items:flex-start;color:var(--muted);font-size:.85rem;margin-top:18px;background:#f0fdf4;border:1px solid #bbf7d0;border-radius:8px;padding:10px 14px}

/* How to / FAQ / related */
.howto,.faq,.related,.why{margin:36px 0;max-width:780px}
.howto h2,.faq h2,.related h2,.why h2{font-size:1.45rem;margin-bottom:14px;letter-spacing:-.01em}
.howto ol{margin-left:22px;display:grid;gap:10px;color:#33415c}
.faq details{border:1px solid var(--line);border-radius:10px;background:var(--paper);padding:14px 18px;margin-bottom:10px}
.faq summary{cursor:pointer;font-weight:700}
.faq details p{color:var(--muted);margin-top:8px;font-size:.95rem}
.related ul{list-style:none;display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:10px}
.related a{display:block;background:var(--paper);border:1px solid var(--line);border-radius:10px;padding:14px 16px;text-decoration:none;font-weight:600;color:var(--ink)}
.related a:hover{border-color:var(--accent);color:var(--accent-dark)}
.related a span{display:block;font-weight:400;font-size:.85rem;color:var(--muted);margin-top:2px}
.why-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:14px;margin-top:14px}
.why-card{background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);padding:20px}
.why-card h3{font-size:1.02rem;margin-bottom:6px}
.why-card p{font-size:.9rem;color:var(--muted);margin:0}

/* Legal pages */
.legal{max-width:760px;padding:40px 0}
.legal h1{font-size:2rem;margin-bottom:6px;letter-spacing:-.02em}
.legal .updated{color:var(--muted);font-size:.88rem;margin-bottom:22px}
.legal h2{font-size:1.25rem;margin:26px 0 8px}
.legal p,.legal li{color:#33415c;margin-bottom:10px}
.legal ul{margin-left:22px;margin-bottom:12px}

/* Footer */
.site-footer{background:var(--paper);border-top:1px solid var(--line);margin-top:40px}
.footer-inner{padding:32px 0;display:grid;gap:14px}
.footer-brand{color:var(--muted);font-size:.92rem;max-width:640px}
.footer-nav{display:flex;flex-wrap:wrap;gap:6px 18px}
.footer-nav a{color:var(--muted);text-decoration:none;font-size:.9rem;font-weight:600}
.footer-nav a:hover{color:var(--accent-dark)}
.copyright{color:var(--muted);font-size:.82rem}

@media (max-width:640px){
  .header-inner{flex-direction:column;align-items:flex-start}
  .main-nav a{padding:7px 8px;font-size:.85rem}
  .hero{padding:40px 0 26px}
  .tool{padding:20px 14px}
  .controls{grid-template-columns:1fr}
}
@media (prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important}}