:root{--editor-bg:#f6faf9;--chip:#e6f3f2}
html[data-theme="dark"],html[data-theme="dark"],html[data-theme="dark"],html[data-theme="dark"],html[data-theme="dark"],html[data-theme="dark"],html[data-theme="dark"],html[data-theme="dark"]{--editor-bg:#102a2c;--chip:rgba(255,255,255,.06)}
.tool-app *{box-sizing:border-box}
.tool-app button,.tool-app input,.tool-app select,.tool-app textarea{font:inherit}
.tool-app button{-webkit-tap-highlight-color:transparent}
.hero{max-width:1240px;margin:0 auto;padding:24px 16px 10px}
.hero h1{margin:0 0 8px;font-size:clamp(2rem,3vw,3rem);line-height:1.04;letter-spacing:-.03em;background:linear-gradient(90deg,var(--accent1),var(--accent2));-webkit-background-clip:text;-webkit-text-fill-color:transparent}
.hero p{margin:0;max-width:960px;color:var(--muted);line-height:1.78}
.top-row{max-width:1240px;margin:0 auto 18px;padding:0 16px;display:grid;grid-template-columns:1.02fr .98fr;gap:16px}
.info-card,.upload-card,.toolbar-card,.summary-card,.result-shell,.tips-card,.preview-card,.output-card{border:1px solid var(--border);background:var(--surface);border-radius:26px;backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);box-shadow:var(--shadow)}
.info-card{padding:24px;display:flex;flex-direction:column;justify-content:center}
.info-title{margin:0 0 10px;font-size:1.22rem;color:var(--text)}
.info-text{margin:0;color:var(--muted);line-height:1.78}
.info-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:16px}
.info-tags span{padding:9px 13px;border-radius:999px;border:1px solid var(--border);background:var(--surface-soft);color:var(--text);font-size:.8rem;font-weight:700}
.upload-card{padding:18px}
.upload-inner{min-height:270px;border:1.6px dashed rgba(99,102,241,.34);border-radius:22px;display:flex;align-items:center;justify-content:center;text-align:center;padding:28px 18px;flex-direction:column;gap:10px;background:var(--upload-bg);transition:border-color .25s ease, transform .18s ease, box-shadow .25s ease}
.upload-inner.dragover{border-color:rgba(99,102,241,.72);box-shadow:0 0 0 4px rgba(99,102,241,.11), 0 24px 50px rgba(37,99,235,.10);transform:translateY(-2px)}
.upload-icon{width:78px;height:78px;display:grid;place-items:center;border-radius:24px;font-size:2rem;border:1px solid var(--border);background:linear-gradient(135deg, rgba(37,99,235,.16), rgba(124,58,237,.16));box-shadow:0 16px 30px rgba(37,99,235,.12)}
.upload-inner h2{margin:4px 0 0;font-size:1.34rem;color:var(--text)}
.upload-inner p{margin:0;color:var(--muted)}
.upload-note{display:inline-flex;align-items:center;justify-content:center;gap:8px;flex-wrap:wrap;margin-top:6px;color:var(--muted);font-size:.82rem}
.toolbar-wrap{max-width:1240px;margin:0 auto 18px;padding:0 16px}
.toolbar-card{padding:18px;position:sticky;top:72px;z-index:30}
.toolbar-top{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:14px;flex-wrap:wrap}
.toolbar-title{display:flex;flex-direction:column;gap:4px}
.toolbar-title h3{margin:0;color:var(--text);font-size:1.08rem}
.toolbar-title p{margin:0;color:var(--muted);font-size:.82rem}
.inline-status{display:inline-flex;align-items:center;gap:8px;padding:9px 12px;border-radius:999px;border:1px solid var(--border);background:var(--surface-soft);color:var(--text);font-size:.78rem;font-weight:700}
.inline-status.success{background:var(--success-soft);border-color:rgba(22,163,74,.20)}
.inline-status.warning{background:var(--warning-soft);border-color:rgba(217,119,6,.20)}
.inline-status.danger{background:var(--danger-soft);border-color:rgba(220,38,38,.20)}
.toolbar-grid{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:10px}
.toolbar-field{display:flex;flex-direction:column;gap:6px}
.toolbar-field label{font-size:.77rem;font-weight:800;color:var(--text)}
.toolbar-field input,.toolbar-field select,.toolbar-field textarea{width:100%;min-height:46px;border-radius:15px;border:1px solid var(--input-border);background:var(--input-bg);color:var(--input-text);padding:11px 13px;font-size:.9rem;outline:none;transition:border-color .18s ease, box-shadow .18s ease}
.toolbar-field textarea{min-height:94px;resize:vertical}
.toolbar-field input::placeholder,.toolbar-field textarea::placeholder{color:var(--placeholder)}
.toolbar-field input:hover,.toolbar-field select:hover,.toolbar-field textarea:hover{border-color:rgba(37,99,235,.34)}
.toolbar-field input:focus,.toolbar-field select:focus,.toolbar-field textarea:focus{border-color:var(--accent1);box-shadow:0 0 0 4px rgba(37,99,235,.12)}
.toolbar-field select{appearance:none;-webkit-appearance:none;-moz-appearance:none;cursor:pointer;padding-right:46px;background-image:linear-gradient(45deg, transparent 50%, var(--muted) 50%),
        linear-gradient(135deg, var(--muted) 50%, transparent 50%);background-position:calc(100% - 19px) calc(50% - 3px), calc(100% - 13px) calc(50% - 3px);background-size:6px 6px,6px 6px;background-repeat:no-repeat}
.toggle-row{display:flex;gap:8px;flex-wrap:wrap;margin-top:10px}
.toggle-chip{display:inline-flex;align-items:center;gap:8px;padding:10px 12px;border-radius:14px;border:1px solid var(--input-border);background:var(--input-bg);color:var(--text);font-size:.82rem;font-weight:700;cursor:pointer;user-select:none}
.toggle-chip input{accent-color:var(--accent1);margin:0}
.toolbar-actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:14px;padding-top:14px;border-top:1px solid var(--border)}
.btn-primary,.btn-outline,.btn-ghost{min-height:46px;border-radius:15px;padding:0 16px;border:1px solid transparent;display:inline-flex;align-items:center;justify-content:center;gap:8px;font-size:.92rem;font-weight:800;line-height:1;cursor:pointer;user-select:none;white-space:nowrap;transition:transform .16s ease, box-shadow .18s ease, border-color .18s ease, background .18s ease, color .18s ease, opacity .18s ease}
.btn-primary{color:var(--btn-primary-text);background:var(--accent-grad);border-color:rgba(255,255,255,.08);box-shadow:0 12px 26px rgba(37,99,235,.22)}
.btn-primary:hover{transform:translateY(-1px);box-shadow:0 18px 34px rgba(37,99,235,.28)}
.btn-outline{color:var(--btn-outline-text);background:var(--btn-outline-bg);border-color:var(--btn-outline-border)}
.btn-outline:hover{transform:translateY(-1px);background:rgba(37,99,235,.14)}
.btn-ghost{color:var(--btn-ghost-text);background:var(--btn-ghost-bg);border-color:var(--btn-ghost-border)}
.btn-ghost:hover{transform:translateY(-1px);background:var(--surface-soft)}
.btn-primary:disabled,.btn-outline:disabled,.btn-ghost:disabled{opacity:.55;cursor:not-allowed;transform:none !important;box-shadow:none !important}
.progress-row{width:100%;display:flex;align-items:center;gap:12px;margin-top:14px;padding-top:14px;border-top:1px solid var(--border)}
.progress-bar{flex:1;height:8px;border-radius:999px;overflow:hidden;background:rgba(148,163,184,.18)}
.progress-bar>div{width:0%;height:100%;background:var(--accent-grad);transition:width .22s ease}
#progressText{min-width:220px;text-align:right;color:var(--muted);font-size:.79rem}
.summary-wrap{max-width:1240px;margin:0 auto 18px;padding:0 16px;display:grid;grid-template-columns:repeat(6,1fr);gap:12px}
.summary-card{padding:16px}
.summary-card small{display:block;margin-bottom:6px;color:var(--muted);font-size:.72rem;letter-spacing:.08em;text-transform:uppercase}
.summary-card strong{display:block;color:var(--text);font-size:1.08rem;word-break:break-word}
.workspace{max-width:1240px;margin:0 auto 18px;padding:0 16px}
.result-shell{padding:18px}
.panel-head{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;margin-bottom:14px}
.panel-head-left{display:flex;flex-direction:column;gap:4px}
.panel-head-left h3{margin:0;color:var(--text);font-size:1.08rem}
.panel-head-left p{margin:0;color:var(--muted);font-size:.82rem}
.panel-head-right{display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.editor-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.editor-pane{border:1px solid var(--border);border-radius:22px;background:var(--preview-bg);overflow:hidden;height:620px;display:flex;flex-direction:column;min-width:0}
.editor-head{display:flex;align-items:center;justify-content:space-between;gap:10px;flex-wrap:wrap;padding:14px 16px;border-bottom:1px solid var(--border)}
.editor-head h4{margin:0;font-size:1rem;color:var(--text)}
.editor-tools{display:flex;gap:8px;flex-wrap:wrap}
.mini-chip{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:8px 10px;border-radius:999px;border:1px solid var(--border);background:var(--surface-soft);font-size:.74rem;font-weight:800;color:var(--muted)}
.editor-wrap{position:relative;flex:1;min-height:0;display:flex;flex-direction:column;background:var(--editor-bg)}
.editor-wrap textarea,.editor-wrap pre{margin:0;padding:16px 18px;border:0;outline:none;width:100%;height:100%;background:transparent;color:var(--text);resize:none;overflow:auto;white-space:pre-wrap;word-break:break-word;tab-size:2;line-height:1.62;font:500 13px/1.62 ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,"Liberation Mono","Courier New",monospace}
.editor-wrap textarea::placeholder{color:var(--placeholder)}
.editor-wrap pre code{font:inherit}
.editor-foot{display:flex;align-items:center;justify-content:space-between;gap:10px;flex-wrap:wrap;padding:12px 16px;border-top:1px solid var(--border);background:var(--surface-soft)}
.editor-foot .left,.editor-foot .right{display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.badge{display:inline-flex;align-items:center;gap:8px;padding:8px 10px;border-radius:999px;border:1px solid var(--border);background:var(--surface-soft);color:var(--text);font-size:.75rem;font-weight:800}
.badge.success{background:var(--success-soft);border-color:rgba(22,163,74,.18)}
.badge.warning{background:var(--warning-soft);border-color:rgba(217,119,6,.18)}
.badge.danger{background:var(--danger-soft);border-color:rgba(220,38,38,.18)}
.bottom-row{max-width:1240px;margin:0 auto 18px;padding:0 16px;display:grid;grid-template-columns:1.08fr .92fr;gap:16px}
.preview-card,.tips-card,.output-card{padding:18px}
.section-head{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;margin-bottom:14px}
.section-head h3,.tips-card h3{margin:0;color:var(--text);font-size:1.04rem}
.section-head p,.tips-card p{margin:0;color:var(--muted);line-height:1.72}
.preview-box,.snippet-box{border:1px solid var(--border);border-radius:20px;background:var(--preview-bg);max-height:520px;overflow:auto;padding:14px}
.file-preview-shell{border:1px solid var(--border);border-radius:20px;background:var(--preview-bg);min-height:520px;overflow:hidden;display:flex;flex-direction:column}
.file-preview-stage{flex:1;min-height:0;display:flex;align-items:center;justify-content:center;padding:18px;background:linear-gradient(45deg, rgba(148,163,184,.08) 25%, transparent 25%, transparent 75%, rgba(148,163,184,.08) 75%, rgba(148,163,184,.08)),
        linear-gradient(45deg, rgba(148,163,184,.08) 25%, transparent 25%, transparent 75%, rgba(148,163,184,.08) 75%, rgba(148,163,184,.08));background-size:24px 24px;background-position:0 0,12px 12px}
.file-preview-stage img{max-width:100%;max-height:420px;display:block;object-fit:contain;border-radius:18px;box-shadow:0 18px 40px rgba(15,23,42,.18);background:#fff}
.file-preview-empty{text-align:center;color:var(--muted);max-width:360px;line-height:1.7}
.preview-stat{display:grid;grid-template-columns:repeat(2,1fr);gap:10px;padding:14px;border-top:1px solid var(--border)}
.mini-stat{padding:14px;border:1px solid var(--border);border-radius:18px;background:var(--surface-soft)}
.mini-stat small{display:block;color:var(--muted);text-transform:uppercase;letter-spacing:.08em;font-size:.69rem;margin-bottom:6px}
.mini-stat strong{font-size:.98rem;color:var(--text);display:block;word-break:break-word}
.snippet-list{display:grid;gap:12px}
.snippet-item{border:1px solid var(--border);background:var(--surface-soft);border-radius:18px;overflow:hidden}
.snippet-top{display:flex;align-items:center;justify-content:space-between;gap:10px;flex-wrap:wrap;padding:12px 14px;border-bottom:1px solid var(--border)}
.snippet-top strong{font-size:.95rem}
.snippet-top .mini-actions{display:flex;gap:8px;flex-wrap:wrap}
.mini-btn{min-height:34px;border-radius:12px;padding:0 12px;border:1px solid var(--btn-outline-border);background:var(--btn-outline-bg);color:var(--btn-outline-text);font-size:.8rem;font-weight:800;cursor:pointer}
.snippet-code{margin:0;padding:14px;max-height:220px;overflow:auto;white-space:pre-wrap;word-break:break-word;line-height:1.6;color:var(--text);font:500 12.8px/1.62 ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,"Liberation Mono","Courier New",monospace;background:var(--editor-bg)}
.warning-box{margin-top:14px;padding:14px 16px;border-radius:18px;border:1px solid rgba(217,119,6,.22);background:var(--warning-soft);color:var(--text);line-height:1.7}
.success-box{margin-top:14px;padding:14px 16px;border-radius:18px;border:1px solid rgba(22,163,74,.22);background:var(--success-soft);color:var(--text);line-height:1.7}
.list{margin:10px 0 0;padding-left:18px;color:var(--muted);line-height:1.82}
.list li + li{margin-top:5px}
.kbd{display:inline-flex;align-items:center;justify-content:center;min-width:28px;height:28px;padding:0 10px;border-radius:10px;border:1px solid var(--border);background:var(--surface-soft);color:var(--text);font-size:.78rem;font-weight:900}
.mono{font-family:ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,"Liberation Mono","Courier New",monospace}
.muted{color:var(--muted)}
@media (max-width:1180px){
.toolbar-grid{grid-template-columns:repeat(3,minmax(0,1fr))}
.summary-wrap{grid-template-columns:repeat(3,1fr)}
.bottom-row{grid-template-columns:1fr}
}
@media (max-width:920px){
.top-row{grid-template-columns:1fr}
.editor-grid{grid-template-columns:1fr}
}
@media (max-width:760px){
.toolbar-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:680px){
.toolbar-card{position:relative;top:auto}
.toolbar-grid{grid-template-columns:1fr}
.toolbar-actions{display:grid;grid-template-columns:1fr}
.toolbar-actions button{width:100%}
.progress-row{flex-direction:column;align-items:stretch}
#progressText{min-width:auto;text-align:left}
.summary-wrap{grid-template-columns:repeat(2,1fr)}
.preview-stat{grid-template-columns:1fr}
.editor-pane{height:560px}
}
@media (max-width:460px){
.summary-wrap{grid-template-columns:1fr}
.editor-wrap pre,.editor-wrap textarea,.snippet-code{font-size:12px}
}

/* page overrides */
/* shared developer-tool layout fixes (Soft & clear) */
.tool-app .top-row,.tool-app .toolbar-wrap,.tool-app .workspace,.tool-app .bottom-row{max-width:none;padding:0;margin:0 0 14px}
.tool-app .upload-card{padding:0}
.tool-app .upload-inner{min-height:0;display:grid;grid-template-columns:auto minmax(0,1fr) auto;align-items:center;justify-content:stretch;text-align:left;gap:2px 14px;padding:14px 18px;transform:none;box-shadow:none}
.tool-app .upload-inner.dragover{transform:none;box-shadow:none}
.tool-app .upload-inner .upload-icon{grid-column:1;grid-row:1/3;width:44px;height:44px;border-radius:12px;border:0;box-shadow:none}
.tool-app .upload-inner .zl-ui-title{grid-column:2;grid-row:1;font-size:16px;margin:0}
.tool-app .upload-inner p:not(.zl-ui-title){grid-column:2;grid-row:2;font-size:14px;margin:0}
.tool-app .upload-inner>button,.tool-app .upload-inner>.btn-primary{grid-column:3;grid-row:1/3}
.tool-app .upload-inner .upload-note{grid-column:2/4;grid-row:3;justify-content:flex-start;margin:4px 0 0;font-size:13px}
.tool-app .toolbar-card{position:static;top:auto;padding:16px 18px;border-radius:18px}
.tool-app .toolbar-top{margin-bottom:12px}
.tool-app .toolbar-field label{font:500 13.5px var(--zl-font-head);color:var(--zl-ink)}
.tool-app .toolbar-field input,.tool-app .toolbar-field select{border-radius:12px;min-height:44px}
.tool-app .toolbar-actions,.tool-app .progress-row{border-color:var(--zl-line)}
.tool-app .progress-row{margin-top:12px;padding-top:12px}
.tool-app .progress-bar{height:6px;background:var(--zl-surface-2)}
.tool-app .progress-bar>div{background:var(--zl-accent)}
.tool-app #progressText{color:var(--zl-muted);font-size:14px}
.tool-app .inline-status{border-radius:999px;border:1px solid var(--zl-line);background:var(--zl-surface-2);font:500 13.5px var(--zl-font-head);color:var(--zl-ink);padding:6px 12px}
.tool-app .inline-status.success{background:var(--zl-tint);border-color:transparent}
.tool-app .inline-status.danger{background:#fde8e6;color:#8c1d13;border-color:transparent}
.tool-app .inline-status.warning{background:var(--zl-note,#fff4d6);color:var(--zl-note-ink,#5c4300);border-color:transparent}
html[data-theme="dark"] .tool-app .inline-status.danger{background:#3a1d1a;color:#ffb4ab}
.tool-app .result-shell{padding:16px 18px;border-radius:18px}
.tool-app .panel-head{margin-bottom:12px}
.tool-app .editor-pane{min-height:420px;border-radius:14px;border-color:var(--zl-line);background:var(--zl-surface);min-width:0}
.tool-app .editor-grid{gap:14px}
.tool-app .editor-grid>*{min-width:0}
.tool-app .editor-head{padding:10px 14px;border-color:var(--zl-line)}
.tool-app .editor-head .zl-ui-title{font-size:15px}
.tool-app .editor-wrap{background:var(--zl-surface);min-width:0}
.tool-app .line-numbers{background:var(--zl-surface-2);color:var(--zl-muted)}
.tool-app .editor-wrap textarea,.tool-app .editor-wrap pre{font-family:var(--zl-font-mono);font-size:13.5px;color:var(--zl-ink);border-radius:0}
.tool-app .editor-wrap textarea:focus{box-shadow:none;outline:2px solid var(--zl-accent);outline-offset:-2px}
.tool-app .editor-foot{padding:8px 14px;border-color:var(--zl-line);background:var(--zl-surface-2)}
.tool-app .badge{font-size:12.5px;padding:4px 10px}
.tool-app .badge.danger{background:#fde8e6;color:#8c1d13}
html[data-theme="dark"] .tool-app .badge.danger{background:#3a1d1a;color:#ffb4ab}
.tool-app .mini-chip{font-size:12.5px;padding:4px 10px}
.tool-app .search-hit{background:#ffe08a;color:#3d2e00;border-radius:3px;font-weight:inherit;box-shadow:0 0 0 1px #e8c34f}
html[data-theme="dark"] .tool-app .search-hit{background:#6b5310;color:#fff3cf;box-shadow:none}
.tool-app .analysis-card,.tool-app .preview-card,.tool-app .tips-card{padding:16px 18px;border-radius:18px}
.tool-app .analysis-box,.tool-app .preview-box{border-radius:14px;border-color:var(--zl-line);background:var(--zl-surface-2)}
.tool-app .url-item,.tool-app .mini-stat,.tool-app .summary-card{border-radius:12px;border-color:var(--zl-line);background:var(--zl-surface);box-shadow:none}
.tool-app .section-head{margin-bottom:12px}
.tool-app .section-head p{font-size:14px}
@media (max-width:680px){
.tool-app .upload-inner{grid-template-columns:auto minmax(0,1fr)}
.tool-app .upload-inner>button,.tool-app .upload-inner>.btn-primary{grid-column:1/-1;grid-row:4;margin-top:8px;width:100%}
.tool-app .upload-inner .upload-note{grid-column:1/-1}
.tool-app .editor-pane{min-height:320px}
.tool-app .toolbar-actions{grid-template-columns:1fr 1fr}
.tool-app .toolbar-actions>.btn-primary:first-child{grid-column:1/-1}
.tool-app .toolbar-card,.tool-app .result-shell,.tool-app .analysis-card,.tool-app .preview-card{padding:14px}
}
.tool-app .section-head .zl-ui-title,.tool-app .panel-head .zl-ui-title,.tool-app .toolbar-title .zl-ui-title{font-size:17px}
@media (max-width:680px){.tool-app .toolbar-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.tool-app .preview-stat,.tool-app .url-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.tool-app .editor-pane{min-height:280px}}
.tool-app .bottom-row:has(>:only-child){grid-template-columns:1fr}
.tool-app .editor-wrap{min-height:220px}
.tool-app .summary-wrap{max-width:none;padding:0;margin:0 0 14px;gap:10px}
.tool-app .summary-card{padding:10px 14px}
.tool-app .summary-card small{font-family:var(--zl-font-head);letter-spacing:.04em}
@media (max-width:680px){.tool-app .summary-wrap{grid-template-columns:repeat(2,minmax(0,1fr))}}
.tool-app .bottom-row{align-items:start}.tool-app .preview-box,.tool-app .analysis-box{min-height:0;height:auto}
/* page content: long code samples scroll inside their box instead of widening the page */
.zl-article,.zl-body>*{min-width:0}
.zl-article pre{max-width:100%;overflow-x:auto}
.zl-article pre code{white-space:pre}
.zl-article .zl-table-wrap{max-width:100%;overflow-x:auto}
/* long Base64 / data URI output never widens the layout */
.tool-app .editor-wrap pre,.tool-app .editor-wrap code,.tool-app .snippet-code,.tool-app .url-item strong,.tool-app .mini-stat strong{min-width:0;overflow-wrap:anywhere}
@media (max-width:680px){
.tool-app .toolbar-actions{grid-template-columns:repeat(2,minmax(0,1fr))}
.tool-app .toolbar-actions>button{min-width:0;white-space:normal;line-height:1.2;padding:6px 10px;text-align:center}
.tool-app .toggle-chip{white-space:normal}
}
.zl-article :not(pre)>code{overflow-wrap:anywhere;word-break:break-word}

/* tool specific */
.tool-app .panel-card,.tool-app .snippet-card{padding:16px 18px;border-radius:18px}
.tool-app .toggle-chip{border-radius:999px;font:500 14px var(--zl-font-head);min-height:44px;border-color:var(--zl-line-2);background:var(--zl-surface)}
.tool-app .snippet-item{border-radius:12px;border-color:var(--zl-line);min-width:0}
.tool-app .snippet-code{white-space:pre-wrap;overflow-wrap:anywhere;word-break:break-all;max-height:220px;overflow:auto}
.tool-app #outputCode,.tool-app #outputPre{white-space:pre-wrap;overflow-wrap:anywhere;word-break:break-all}
.tool-app .bottom-row>*,.tool-app .workspace *{min-width:0}