/* Img Hut - shared styles for every page */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{--primary:#7c3aed;--primary-dark:#6d28d9;--primary-bg:#f5f3ff;--bg:#f9fafb;--card:#fff;--text:#111827;--text-secondary:#4b5563;--muted:#6b7280;--border:#e5e7eb;--radius:12px;--shadow:0 1px 3px rgba(0,0,0,.08);--ok:#047857;--warn:#b45309;--err:#b91c1c}
html{-webkit-text-size-adjust:100%}
body{font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,Helvetica,Arial,sans-serif;background:var(--bg);color:var(--text);min-height:100vh;display:flex;flex-direction:column;line-height:1.5}
[hidden]{display:none!important}
a{color:var(--primary);text-decoration:none}
a:hover{text-decoration:underline}
button,input,select,textarea{font:inherit;color:inherit}
button{cursor:pointer}
img{max-width:100%}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}

/* Header and navigation */
.site-header{background:var(--primary);color:#fff}
.hdr-top{max-width:1100px;margin:0 auto;padding:12px 20px;display:flex;align-items:center;justify-content:space-between;gap:8px 20px;flex-wrap:wrap}
.brand{color:#fff;font-size:20px;font-weight:700;display:inline-flex;align-items:center;gap:8px;line-height:1.2}
.brand:hover{text-decoration:none}
.brand-logo{display:block;border-radius:7px;box-shadow:0 0 0 2px rgba(255,255,255,.55)}
.brand-tag{font-weight:400;font-size:13px;opacity:.85}
.hdr-links{display:flex;flex-wrap:wrap;gap:6px 18px;font-size:15px}
.hdr-links a{color:#fff}
.hdr-links a[aria-current="page"]{text-decoration:underline;text-underline-offset:4px}
.tool-nav{background:var(--card);border-bottom:1px solid var(--border);color:var(--text)}
.tool-nav ul{list-style:none;max-width:1100px;margin:0 auto;padding:0 10px;display:flex;gap:2px;overflow-x:auto;white-space:nowrap;scrollbar-width:thin;-webkit-overflow-scrolling:touch}
.tool-nav li{margin:0;flex:0 0 auto}
.tool-nav a{display:block;padding:11px 12px 9px;font-size:14px;color:var(--text-secondary);border-bottom:3px solid transparent}
.tool-nav a:hover{color:var(--primary);text-decoration:none}
.tool-nav a[aria-current="page"]{color:var(--primary);border-bottom-color:var(--primary);font-weight:600}

/* Page layout */
.page{flex:1 0 auto;width:100%;max-width:960px;margin:0 auto;padding:18px 20px 48px}
.crumbs{font-size:13px;color:var(--muted);margin:0 0 10px}
.crumbs ol{list-style:none;display:flex;flex-wrap:wrap;gap:4px 0;padding:0;margin:0}
.crumbs li+li::before{content:"\203A";margin:0 7px;color:var(--muted)}
.crumbs a{color:var(--muted)}
.page-title{font-size:32px;line-height:1.2;font-weight:700;margin:0 0 10px;letter-spacing:-.01em}
.lead{font-size:17px;color:var(--text-secondary);margin:0 0 22px;max-width:780px}
.byline{font-size:14px;color:var(--muted);margin:-10px 0 22px}

/* Tool panel */
.tool-panel{margin:0 0 8px}
.upload-area{position:relative;display:block;border:2px dashed #cbd5e1;border-radius:var(--radius);padding:36px 20px;text-align:center;cursor:pointer;transition:border-color .2s,background .2s;background:var(--card);margin:0 0 16px}
.upload-area:hover,.upload-area.dragover{border-color:var(--primary);background:var(--primary-bg)}
.upload-area:focus-within{outline:3px solid rgba(124,58,237,.35);outline-offset:2px}
.upload-area.has-file{padding:18px 20px}
.upload-icon{display:block;font-size:40px;line-height:1;margin:0 0 10px}
.upload-area.has-file .upload-icon{display:none}
.upload-prompt{display:block;font-size:16px;color:var(--text)}
.upload-prompt strong{color:var(--primary)}
.upload-hint{display:block;font-size:13px;color:var(--muted);margin-top:6px}
.upload-status{display:block;font-size:14px;color:var(--text);margin-top:8px;font-weight:600;word-break:break-word}
.upload-status:empty{display:none}
.tool-msg{border-radius:8px;padding:10px 14px;margin:0 0 16px;font-size:14px;background:var(--primary-bg);color:var(--text)}
.tool-msg.error{background:#fef2f2;color:var(--err);border:1px solid #fecaca}
.tool-msg.warn{background:#fffbeb;color:var(--warn);border:1px solid #fde68a}
.controls{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:18px 20px;margin:0 0 16px;box-shadow:var(--shadow)}
.control-row{display:flex;align-items:center;gap:10px 12px;margin:0 0 12px;flex-wrap:wrap}
.control-row>label:first-child{font-size:14px;font-weight:600;min-width:110px}
.control-row input[type=range]{flex:1 1 180px;accent-color:var(--primary);min-width:140px}
.control-row input[type=number]{width:110px;padding:7px 10px;border:1px solid #d1d5db;border-radius:6px;font-size:15px;background:#fff}
.control-row select{padding:7px 10px;border:1px solid #d1d5db;border-radius:6px;font-size:15px;background:#fff;max-width:100%}
.control-row input[type=color]{width:48px;height:34px;border:1px solid #d1d5db;border-radius:6px;background:#fff;padding:2px}
.control-row .check{display:inline-flex;align-items:center;gap:8px;font-size:14px;font-weight:600;cursor:pointer}
.control-row .check input{width:18px;height:18px;accent-color:var(--primary)}
.val-display{font-size:15px;color:var(--primary);font-weight:700;min-width:48px}
.control-note{font-size:13px;color:var(--muted);margin:-4px 0 12px;line-height:1.5}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;padding:10px 20px;border-radius:8px;font-size:15px;font-weight:600;border:1px solid transparent;transition:background .2s}
.btn:disabled{opacity:.6;cursor:wait}
.btn-primary{background:var(--primary);color:#fff}
.btn-primary:hover{background:var(--primary-dark)}
.btn-secondary{background:var(--primary-bg);color:var(--primary);border-color:var(--primary)}
.btn-secondary:hover{background:#ede9fe}
.btn-group{display:flex;gap:10px;flex-wrap:wrap;margin-top:14px}
.preview-area{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:18px 20px;box-shadow:var(--shadow);margin:0 0 16px}
.preview-title{font-size:17px;font-weight:700;margin:0 0 12px}
.preview-container{display:flex;gap:20px;flex-wrap:wrap}
.preview-box{flex:1 1 240px;min-width:0;text-align:center;margin:0}
.preview-box img{display:block;margin:0 auto;max-width:100%;max-height:380px;border-radius:8px;border:1px solid var(--border);background:repeating-conic-gradient(#f3f4f6 0 25%,#fff 0 50%) 0 0/16px 16px}
.preview-box .label{font-size:13px;font-weight:600;color:var(--text-secondary);margin-top:8px}
.info-text{font-size:13px;color:var(--text-secondary);margin-top:6px;padding:8px 12px;background:#f9fafb;border-radius:6px;word-break:break-word}
.info-text:empty{display:none}
.info-text .good{color:var(--ok);font-weight:600}
.info-text .bad{color:var(--warn);font-weight:600}

/* Crop */
.crop-stage{text-align:center;margin:0 0 6px}
.crop-wrapper{position:relative;display:inline-block;max-width:100%;user-select:none;-webkit-user-select:none;overflow:hidden;border-radius:6px;background:repeating-conic-gradient(#f3f4f6 0 25%,#fff 0 50%) 0 0/16px 16px}
.crop-wrapper img{display:block;max-width:100%;max-height:520px;pointer-events:none}
.crop-overlay{position:absolute;inset:0;cursor:crosshair;touch-action:none}
.crop-box{position:absolute;border:2px solid #fff;outline:1px solid var(--primary);box-shadow:0 0 0 9999px rgba(17,24,39,.5);cursor:move}
.crop-box .handle{position:absolute;width:16px;height:16px;background:var(--primary);border:2px solid #fff;border-radius:50%}
.handle-nw{top:-8px;left:-8px;cursor:nwse-resize}
.handle-ne{top:-8px;right:-8px;cursor:nesw-resize}
.handle-sw{bottom:-8px;left:-8px;cursor:nesw-resize}
.handle-se{bottom:-8px;right:-8px;cursor:nwse-resize}

/* Base64 */
.b64-output{width:100%;min-height:140px;padding:12px;border:1px solid #d1d5db;border-radius:8px;font-family:ui-monospace,Menlo,Consolas,monospace;font-size:12px;resize:vertical;background:#f9fafb;word-break:break-all}

/* Favicon */
.favicon-previews{display:flex;gap:14px;flex-wrap:wrap;align-items:flex-end}
.favicon-item{text-align:center;background:#f9fafb;padding:12px;border-radius:8px;border:1px solid var(--border);margin:0}
.favicon-item img{display:block;margin:0 auto;background:repeating-conic-gradient(#e5e7eb 0 25%,#fff 0 50%) 0 0/8px 8px}
.favicon-item img.px{image-rendering:pixelated}
.favicon-item figcaption{font-size:12px;color:var(--text-secondary);margin-top:6px}
.file-list{list-style:none;display:flex;flex-wrap:wrap;gap:8px;margin:12px 0 0;padding:0}
.file-list button{font-size:13px;padding:6px 12px}
.snippet{background:#111827;color:#f9fafb;border-radius:8px;padding:12px 14px;font-family:ui-monospace,Menlo,Consolas,monospace;font-size:12.5px;line-height:1.6;overflow-x:auto;white-space:pre;margin:12px 0 0}

/* Article content */
.prose{margin-top:34px;background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:30px 34px;line-height:1.72;font-size:16.5px;color:#1f2937}
.prose.plain{margin-top:0}
.prose h2{font-size:23px;line-height:1.3;margin:34px 0 12px;color:var(--text)}
.prose h2:first-child{margin-top:0}
.prose h3{font-size:18px;line-height:1.35;margin:24px 0 8px;color:var(--text)}
.prose p{margin:0 0 15px}
.prose ul,.prose ol{margin:0 0 16px;padding-left:24px}
.prose li{margin:0 0 7px}
.prose li>ul,.prose li>ol{margin:7px 0 0}
.prose code{font-family:ui-monospace,Menlo,Consolas,monospace;font-size:.88em;padding:1px 5px;border-radius:4px;background:#f3f4f6}
.prose pre{background:#111827;color:#f9fafb;padding:14px 16px;border-radius:8px;overflow-x:auto;font-size:13px;line-height:1.6;margin:0 0 18px}
.prose pre code{background:none;padding:0;color:inherit;font-size:inherit}
.table-wrap{overflow-x:auto;margin:0 0 18px;-webkit-overflow-scrolling:touch}
.prose table{width:100%;border-collapse:collapse;font-size:15px;line-height:1.5}
.prose th,.prose td{border:1px solid var(--border);padding:8px 11px;text-align:left;vertical-align:top}
.prose th{background:var(--primary-bg);font-weight:700}
.note{background:var(--primary-bg);border-left:4px solid var(--primary);padding:12px 16px;border-radius:6px;margin:0 0 18px;font-size:15.5px}
.faq details{border-bottom:1px solid var(--border);padding:13px 0}
.faq details:first-of-type{border-top:1px solid var(--border)}
.faq summary{cursor:pointer;font-weight:600;list-style:none;display:flex;justify-content:space-between;gap:14px;color:var(--text)}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";color:var(--muted);font-weight:400;font-size:20px;line-height:1}
.faq details[open] summary::after{content:"\2212"}
.faq details p{margin:9px 0 0;color:#374151}

/* Cards */
.card-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:14px;margin:0 0 18px}
.card{display:block;background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:16px 18px;color:var(--text);transition:border-color .15s,box-shadow .15s}
.card:hover{border-color:var(--primary);box-shadow:0 4px 14px rgba(124,58,237,.12);text-decoration:none}
.card-title{display:flex;align-items:center;gap:8px;font-size:17px;font-weight:700;color:var(--primary);margin:0 0 6px;line-height:1.3}
.card-icon{font-size:20px}
.card p{font-size:14.5px;color:var(--text-secondary);margin:0;line-height:1.55}
.prose .card-grid{margin-top:4px}
.home-tools{margin:0 0 8px}

/* Footer */
.footer{background:var(--card);border-top:1px solid var(--border);padding:24px 20px;text-align:center;font-size:13px;color:var(--text-secondary)}
.footer-links{display:flex;gap:8px 16px;justify-content:center;margin-bottom:10px;flex-wrap:wrap}
.footer-links a{color:var(--text-secondary)}
.footer-links a:hover{color:var(--primary)}
.footer-guides{display:flex;flex-wrap:wrap;justify-content:center;gap:4px 14px;margin:0 0 10px}
.footer-guides a{color:inherit;text-decoration:underline;text-underline-offset:2px}

@media (max-width:640px){
  .hdr-top{padding:10px 16px}
  .brand-tag{display:none}
  .page{padding:14px 16px 40px}
  .page-title{font-size:25px}
  .lead{font-size:16px}
  .prose{padding:20px 18px;font-size:16px}
  .prose h2{font-size:20px}
  .controls,.preview-area{padding:16px}
  .control-row>label:first-child{min-width:0;width:100%}
  .crop-wrapper img{max-height:62vh}
  .upload-area{padding:28px 16px}
}