/* TwinsTools — clean, fast, mobile-first. No frameworks. */
:root{
  --brand:#0e7490; --brand-dark:#0c5f76; --ink:#0f172a; --muted:#64748b;
  --bg:#f8fafc; --card:#ffffff; --line:#e2e8f0; --accent:#f59e0b;
  --ok:#16a34a; --err:#dc2626; --radius:12px;
  --font:system-ui,-apple-system,"Segoe UI",Roboto,"Noto Sans",Arial,sans-serif;
}
[dir="rtl"]{ --font:"Segoe UI",Tahoma,"Noto Kufi Arabic",Arial,sans-serif; }
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;font-family:var(--font);color:var(--ink);background:var(--bg);line-height:1.65}
.wrap{max-width:960px;margin:0 auto;padding:0 16px}
a{color:var(--brand)}
h1{font-size:1.7rem;line-height:1.3;margin:.6em 0 .4em}
h2{font-size:1.25rem;margin:1.6em 0 .6em}

/* Header */
.site-header{background:var(--card);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:50}
.header-inner{display:flex;align-items:center;gap:16px;min-height:56px}
.brand{display:flex;align-items:center;gap:8px;text-decoration:none;color:var(--ink);font-weight:700;font-size:1.15rem;margin-inline-end:auto}
.brand-mark{color:var(--brand)}
.main-nav{display:flex;gap:4px}
.main-nav a{text-decoration:none;color:var(--ink);padding:8px 10px;border-radius:8px;font-size:.95rem}
.main-nav a:hover{background:var(--bg)}
.lang-switch{font-size:.9rem;white-space:nowrap}
.lang-switch a{text-decoration:none;color:var(--muted);padding:6px 4px}
.lang-switch a.active{color:var(--brand);font-weight:700}
.lang-switch .sep{color:var(--line);margin:0 2px}
@media(max-width:560px){
  .main-nav a{padding:8px 6px;font-size:.85rem}
  .brand-name{font-size:1rem}
}

/* Hero */
.hero{background:linear-gradient(135deg,#0e7490,#155e75);color:#fff;border-radius:var(--radius);padding:36px 24px;margin:20px 0;text-align:center}
.hero h1{margin:0 0 .4em;font-size:1.9rem}
.hero p{margin:0 auto;max-width:640px;opacity:.92}
@media(max-width:560px){.hero{padding:28px 16px}.hero h1{font-size:1.5rem}}

/* Tool cards */
.sec-head{margin:28px 0 12px}
.sec-head h2{margin:0}
.sec-head p{margin:.2em 0 0;color:var(--muted)}
.cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:14px}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:18px;display:flex;flex-direction:column;gap:8px}
.card h3{margin:0;font-size:1.1rem}
.card p{margin:0;color:var(--muted);font-size:.95rem;flex:1}
.btn{display:inline-block;background:var(--brand);color:#fff;border:0;border-radius:10px;padding:12px 22px;font-size:1rem;font-weight:600;cursor:pointer;text-decoration:none;text-align:center}
.btn:hover{background:var(--brand-dark)}
.btn:disabled{opacity:.55;cursor:wait}
.btn-ghost{background:transparent;color:var(--brand);border:1px solid var(--brand)}
.card .btn{align-self:flex-start;margin-top:6px}

/* Tool workspace */
.tool-hero{text-align:center;margin:20px 0 8px}
.tool-hero p{color:var(--muted);max-width:640px;margin:.4em auto 0}
.workspace{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:20px;margin:16px 0}
.dropzone{border:2px dashed var(--line);border-radius:var(--radius);padding:34px 16px;text-align:center;color:var(--muted);cursor:pointer;transition:.15s}
.dropzone:hover,.dropzone.dragover{border-color:var(--brand);background:#f0f9ff;color:var(--brand-dark)}
.dropzone strong{display:block;font-size:1.05rem;margin-bottom:4px}
.file-list{list-style:none;margin:14px 0;padding:0;display:flex;flex-direction:column;gap:8px}
.file-list li{display:flex;align-items:center;gap:10px;background:var(--bg);border:1px solid var(--line);border-radius:10px;padding:10px 12px;font-size:.92rem}
.file-list .fname{flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.file-list .meta{color:var(--muted);font-size:.8rem;white-space:nowrap}
.icon-btn{border:1px solid var(--line);background:#fff;border-radius:8px;padding:4px 10px;cursor:pointer;font-size:.85rem;line-height:1.6}
.icon-btn:hover{border-color:var(--brand);color:var(--brand)}
.actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:14px}
.progress{height:8px;background:var(--line);border-radius:99px;overflow:hidden;margin-top:14px;display:none}
.progress.show{display:block}
.progress>div{height:100%;width:0;background:var(--brand);transition:width .2s}
.status{margin-top:10px;font-size:.92rem}
.status.ok{color:var(--ok)} .status.err{color:var(--err)}
.result-box{margin-top:14px;padding:14px;background:#f0fdf4;border:1px solid #bbf7d0;border-radius:10px}
.result-box .sizes{font-size:.95rem}
.field{margin:12px 0}
.field label{display:block;font-weight:600;margin-bottom:6px;font-size:.95rem}
.field input[type=text],.field input[type=number],.field select,.field textarea{width:100%;padding:10px 12px;border:1px solid var(--line);border-radius:10px;font-size:1rem;font-family:inherit;background:#fff;color:var(--ink)}
.field .hint{font-size:.85rem;color:var(--muted);margin-top:4px}
.radio-row{display:flex;gap:12px;flex-wrap:wrap}
.radio-card{border:1px solid var(--line);border-radius:10px;padding:10px 14px;cursor:pointer;font-size:.95rem}
.radio-card input{margin-inline-end:6px}
.thumbs{display:grid;grid-template-columns:repeat(auto-fill,minmax(120px,1fr));gap:10px;margin-top:14px}
.thumbs img{width:100%;border:1px solid var(--line);border-radius:8px;background:#fff}
.thumb-cap{font-size:.75rem;color:var(--muted);text-align:center}

/* Content blocks */
.content-block{margin:8px 0}
.steps{padding-inline-start:1.4em}
.steps li{margin:.5em 0}
.faq{border:1px solid var(--line);border-radius:10px;background:var(--card);margin:8px 0}
.faq summary{padding:12px 14px;cursor:pointer;font-weight:600;list-style:none}
.faq summary::-webkit-details-marker{display:none}
.faq summary::before{content:"+ ";color:var(--brand)}
.faq[open] summary::before{content:"– "}
.faq p{margin:0;padding:0 14px 14px;color:#334155}
.privacy-note{background:#f0f9ff;border:1px solid #bae6fd;border-radius:var(--radius);padding:4px 18px 12px}
.limits{padding-inline-start:1.4em}
.limits li{margin:.4em 0}
.related{display:flex;gap:8px;flex-wrap:wrap}
.chip{border:1px solid var(--line);background:var(--card);border-radius:99px;padding:8px 16px;text-decoration:none;color:var(--ink);font-size:.9rem}
.chip:hover{border-color:var(--brand);color:var(--brand)}

/* Image-to-prompt */
.preview-img{max-width:100%;max-height:320px;border-radius:10px;border:1px solid var(--line);display:block;margin:12px auto}
textarea.result{width:100%;min-height:180px;padding:12px;border:1px solid var(--line);border-radius:10px;font-size:.98rem;font-family:inherit;line-height:1.7}
.spinner{display:none;text-align:center;padding:20px;color:var(--muted)}
.spinner.show{display:block}

/* Footer */
.site-footer{border-top:1px solid var(--line);margin-top:40px;padding:24px 0 32px;color:var(--muted);font-size:.9rem}
.footer-nav{display:flex;gap:16px;margin:10px 0;flex-wrap:wrap}
.footer-nav a{color:var(--muted);text-decoration:none}
.footer-note{font-size:.82rem}
.why-list{padding-inline-start:1.4em}
.why-list li{margin:.5em 0}