:root{
  --bg:#f7f8fa;--surface:#fff;--tx:#14181f;--mut:#667085;--bd:#e4e7ec;
  --ac:#006af3;--ac-h:#0057c8;--ac-tx:#fff;--soft:#e7f0fe;--brand1:#012359;--brand2:#006af3;
  --err:#b42318;--err-bg:#fef3f2;--warn:#93370d;--warn-bg:#fffaeb;--info-bg:#eff8ff;--info:#175cd3;
  --shadow:0 1px 2px rgba(16,24,40,.06),0 1px 3px rgba(16,24,40,.08);--r:14px;
}
@media (prefers-color-scheme:dark){:root{
  --bg:#0e1116;--surface:#171b22;--tx:#eef0f3;--mut:#9aa4b2;--bd:#272d38;
  --ac:#4d9bff;--ac-h:#84b9ff;--ac-tx:#04152e;--soft:#10233f;--brand1:#9cc4ff;--brand2:#4d9bff;
  --err:#f97066;--err-bg:#2a1512;--warn:#fdb022;--warn-bg:#2a2010;--info-bg:#102235;--info:#84caff;
  --shadow:none}}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--tx);font:16px/1.55 system-ui,-apple-system,"Segoe UI",Roboto,Tahoma,"Noto Sans Arabic","Nirmala UI","Noto Sans Devanagari","Microsoft YaHei","PingFang SC","Noto Sans SC",Arial,sans-serif}
a{color:var(--ac)}
#app{max-width:1040px;margin:0 auto;padding:0 16px 40px}
.nojs{padding:24px;text-align:center}
:focus-visible{outline:3px solid color-mix(in srgb,var(--ac) 55%,transparent);outline-offset:2px;border-radius:8px}

.g-organize{--c:#006af3}.g-optimize{--c:#b45309}.g-convert{--c:#0e7490}.g-edit{--c:#7c3aed}.g-security{--c:#334155}
@media (prefers-color-scheme:dark){.g-organize{--c:#4d9bff}.g-optimize{--c:#fbbf24}.g-convert{--c:#67e8f9}.g-edit{--c:#a78bfa}.g-security{--c:#94a3b8}}

.top{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:16px 0;flex-wrap:wrap}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:1.1rem;color:var(--tx);text-decoration:none}
.logo{width:40px;height:40px;display:block}
.wm{font-weight:800;font-size:1.35rem;letter-spacing:-.01em;line-height:1}
.wm1{color:var(--brand1)}.wm2{color:var(--brand2)}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}
.copy{text-align:center;margin:18px 0 6px;font-weight:600}
.langs{display:flex;background:var(--surface);border:1px solid var(--bd);border-radius:999px;padding:3px;gap:2px}
.langs{flex-wrap:wrap}
.langs button{border:0;background:transparent;color:var(--mut);font:inherit;font-size:.9rem;padding:5px 12px;border-radius:999px;cursor:pointer}
.langs button[aria-pressed=true]{background:var(--ac);color:var(--ac-tx);font-weight:600}

.hero{text-align:center;padding:36px 0 28px}
.hero h1{font-size:clamp(1.6rem,4.5vw,2.6rem);line-height:1.2;margin:0 0 12px;letter-spacing:-.01em}
.hero p{max-width:640px;margin:0 auto 18px;color:var(--mut);font-size:1.05rem}
.badge{display:inline-flex;align-items:center;gap:8px;background:var(--soft);color:var(--ac);border-radius:999px;padding:6px 14px;font-size:.9rem;font-weight:600}

.group{margin:30px 0}
.group h2{font-size:.8rem;text-transform:uppercase;letter-spacing:.08em;color:var(--mut);margin:0 0 12px}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:12px}
.card{display:flex;gap:14px;align-items:flex-start;background:var(--surface);border:1px solid var(--bd);border-radius:var(--r);padding:16px;text-decoration:none;color:var(--tx);box-shadow:var(--shadow);transition:transform .12s,border-color .12s}
.card:hover{transform:translateY(-2px);border-color:var(--c)}
.ico{flex:none;display:grid;place-items:center;width:44px;height:44px;border-radius:12px;color:var(--c);background:color-mix(in srgb,var(--c) 13%,transparent)}
.ico.big{width:56px;height:56px;border-radius:16px}
.ico.big svg{width:30px;height:30px}
.txt{display:flex;flex-direction:column;min-width:0}
.txt b{font-size:1rem}
.txt span{color:var(--mut);font-size:.88rem;line-height:1.4}

.tool{max-width:760px;margin:0 auto}
.back{display:inline-block;margin:6px 0 14px;color:var(--mut);text-decoration:none;font-size:.95rem}
.back::before{content:"←  "}
[dir=rtl] .back::before{content:"→  "}
.back:hover{color:var(--tx)}
.tool-head{display:flex;gap:16px;align-items:center;margin-bottom:18px}
.tool-head h1{margin:0;font-size:1.6rem;line-height:1.2}
.tool-head p{margin:4px 0 0;color:var(--mut)}
.panel{background:var(--surface);border:1px solid var(--bd);border-radius:var(--r);padding:20px;box-shadow:var(--shadow)}

.drop{border:2px dashed var(--bd);border-radius:var(--r);padding:34px 16px;text-align:center;cursor:pointer;transition:border-color .12s,background .12s}
.drop:hover,.drop.over{border-color:var(--c);background:color-mix(in srgb,var(--c) 7%,transparent)}
.drop.compact{padding:14px}
.drop p{margin:0 0 8px}
.drop .big{font-size:1.15rem;font-weight:600}
.mut{color:var(--mut);font-size:.88rem}
.btn{display:inline-block;background:var(--c);color:#fff;border-radius:10px;padding:10px 22px;font-weight:600;margin:6px 0 10px}
@media (prefers-color-scheme:dark){.btn{color:#0b0f14}}

.files{list-style:none;margin:16px 0 0;padding:0;display:flex;flex-direction:column;gap:8px}
.files li{display:flex;align-items:center;gap:10px;border:1px solid var(--bd);border-radius:10px;padding:8px 10px}
.fname{flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-weight:500}
.meta{color:var(--mut);font-size:.85rem;white-space:nowrap}
.row-actions{display:flex;gap:4px}
.icon-btn{width:32px;height:32px;border:1px solid var(--bd);background:transparent;color:var(--tx);border-radius:8px;cursor:pointer;font-size:.95rem}
.icon-btn:hover:not(:disabled){background:var(--soft)}
.icon-btn:disabled{opacity:.35;cursor:default}

form{margin-top:18px;display:grid;gap:16px}
.field{display:flex;flex-direction:column;gap:6px;border:0;padding:0;margin:0;min-width:0}
.field>label,.field legend{font-weight:600;font-size:.92rem;padding:0}
.field small{color:var(--mut);font-size:.82rem}
input[type=text],input[type=number],input[type=password],select{width:100%;padding:10px 12px;border:1px solid var(--bd);border-radius:10px;background:var(--bg);color:var(--tx);font:inherit}
input:focus,select:focus{border-color:var(--ac)}
.checks{display:flex;flex-wrap:wrap;gap:8px 18px}
.chk{display:inline-flex;align-items:center;gap:8px;font-weight:500;cursor:pointer}
.chk input{width:18px;height:18px;accent-color:var(--ac)}

.actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:20px}
.primary{display:inline-block;background:var(--ac);color:var(--ac-tx);border:0;border-radius:10px;padding:12px 28px;font:inherit;font-weight:700;cursor:pointer;text-decoration:none;text-align:center}
.primary:hover:not(:disabled){background:var(--ac-h)}
.primary:disabled{opacity:.45;cursor:default}
.ghost{background:transparent;color:var(--tx);border:1px solid var(--bd);border-radius:10px;padding:12px 22px;font:inherit;cursor:pointer}
.ghost:hover{background:var(--soft)}

.progress{margin-top:18px}
.bar{height:8px;border-radius:99px;background:var(--bd);overflow:hidden}
.bar i{display:block;height:100%;width:0;background:var(--ac);transition:width .25s}
.bar.indet i{width:35%;animation:slide 1.1s ease-in-out infinite alternate}
@keyframes slide{from{margin-inline-start:0}to{margin-inline-start:65%}}
.progress p{margin:8px 0 0;color:var(--mut);font-size:.9rem}
.error{margin:16px 0 0;padding:10px 14px;border-radius:10px;background:var(--err-bg);color:var(--err);font-weight:500}
.error[hidden],.progress[hidden]{display:none}

.result{text-align:center;padding:10px 0}
.ok{color:var(--ac)}
.ok h2{margin:6px 0 4px}
.rname{font-weight:600;word-break:break-word}
.note{margin:10px auto 0;max-width:520px;padding:10px 14px;border-radius:10px;font-size:.92rem;text-align:start}
.note.info{background:var(--info-bg);color:var(--info)}
.note.warn{background:var(--warn-bg);color:var(--warn)}
.result .actions{justify-content:center}

footer{margin-top:44px;padding-top:18px;border-top:1px solid var(--bd);color:var(--mut);font-size:.9rem}
footer summary{cursor:pointer;font-weight:600;color:var(--tx)}
footer details p{max-width:680px}
@media (max-width:520px){.panel{padding:14px}.tool-head h1{font-size:1.35rem}.files li{flex-wrap:wrap}.meta{order:3;width:100%}.fname{flex-basis:60%}}

/* Sign PDF editor */
.sign{margin:1rem 0}
.sg-bar{display:flex;flex-wrap:wrap;gap:.5rem;margin-bottom:.75rem}
.sg-panel{border:1px solid var(--line,#d8dee9);border-radius:12px;padding:1rem;margin-bottom:1rem;background:var(--card,#fff)}
.sg-panel .actions{margin-top:.75rem}
.pad{width:100%;max-width:720px;height:auto;aspect-ratio:3/1;border:2px dashed #9aa5b8;border-radius:10px;background:#fff;touch-action:none;cursor:crosshair;display:block}
.fieldset.inline,.field.inline{display:flex;flex-wrap:wrap;gap:.5rem 1rem;align-items:center;border:0;padding:0;margin:.75rem 0 0}
.fprev{font-size:1.4rem}
.sg-nav{display:flex;align-items:center;justify-content:center;gap:1rem;margin:.5rem 0}
.sg-stage{display:flex;justify-content:center;min-height:120px}
.sg-page{position:relative;display:inline-block;max-width:100%;box-shadow:0 2px 14px rgba(0,0,0,.18);user-select:none;touch-action:none}
.sg-page #sg-bg{display:block;max-width:100%;height:auto;max-height:80vh}
.sg-item{position:absolute;transform:translate(-50%,-50%);cursor:move;touch-action:none;outline:1px dashed transparent}
.sg-item.on{outline-color:#2563eb}
.sg-sel{display:flex;flex-wrap:wrap;gap:1rem;align-items:center;justify-content:center;margin:.75rem 0}

/* Category tabs */
.tabs{display:flex;flex-wrap:wrap;justify-content:center;gap:10px;margin:8px 0 26px}
.tab:not([class*=g-]){--c:var(--ac)}
.tab{font:inherit;font-weight:600;font-size:.95rem;padding:10px 22px;border-radius:999px;cursor:pointer;color:var(--c);background:var(--surface);border:1.5px solid color-mix(in srgb,var(--c) 30%,var(--bd));box-shadow:var(--shadow);transition:transform .12s,background .15s,color .15s,box-shadow .15s}
.tab:hover{transform:translateY(-2px);background:color-mix(in srgb,var(--c) 10%,var(--surface))}
.tab:focus-visible{outline:3px solid color-mix(in srgb,var(--c) 45%,transparent);outline-offset:2px}
.tab[aria-selected=true]{background:var(--c);color:#fff;border-color:var(--c);box-shadow:0 6px 16px color-mix(in srgb,var(--c) 38%,transparent)}
@media (prefers-color-scheme:dark){.tab[aria-selected=true]{color:#0b1220}}

/* Footer links + legal pages */
.flinks{display:flex;flex-wrap:wrap;justify-content:center;gap:10px;margin:0 0 22px}
.flink{padding:9px 18px;border-radius:999px;border:1px solid var(--bd);background:var(--surface);color:var(--tx);text-decoration:none;font-weight:600;font-size:.88rem;box-shadow:var(--shadow);transition:transform .12s,border-color .12s,background .15s}
.flink:hover{transform:translateY(-2px);border-color:var(--tx)}
.flink:focus-visible{outline:3px solid color-mix(in srgb,var(--tx) 40%,transparent);outline-offset:2px}
.flink.on{background:var(--tx);color:var(--surface);border-color:var(--tx)}
.legal{max-width:720px;margin:0 auto}
.legal h1{margin:.4rem 0 1rem}
.legal h2{font-size:1.05rem;margin:1.6rem 0 .4rem}
.legal p{line-height:1.75}
.legal .lead{font-size:1.1rem;font-weight:600}
.legal .mail{font-weight:700;font-size:1.1rem}