:root{
  --bg:#06060F;--surface:#0E0E1C;--surface2:#161628;--surface3:#1E1E38;
  --border:rgba(160,160,255,0.1);--border2:rgba(110,231,255,0.25);
  --accent:#6EE7FF;--accent2:#B4FF5A;--text:#EEEEF8;--muted:#7777AA;
  --card:#0D0D20;--radius:14px;--max:1100px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{background:var(--bg);color:var(--text);font-family:'Plus Jakarta Sans',sans-serif;min-height:100vh;line-height:1.6}

/* NAV */
nav.sitenav{position:sticky;top:0;z-index:200;background:rgba(6,6,15,0.92);backdrop-filter:blur(20px);border-bottom:1px solid var(--border);padding:0 2rem;display:flex;align-items:center;justify-content:space-between;height:58px}
.logo{font-family:'Syne',sans-serif;font-weight:800;font-size:1.2rem;color:var(--text);text-decoration:none;display:flex;align-items:center;gap:6px}
.logo em{color:var(--accent);font-style:normal}
.logo-dot{display:inline-block;width:7px;height:7px;background:var(--accent2);border-radius:50%;margin-right:2px}
.nav-links{display:flex;gap:4px}
.nav-pill{padding:5px 13px;border-radius:7px;font-size:0.8rem;color:var(--muted);cursor:pointer;border:none;background:none;font-family:inherit;transition:all 0.2s;text-decoration:none;display:inline-block}
.nav-pill:hover{color:var(--text);background:var(--surface2)}
.nav-pill.active{color:var(--accent);background:rgba(110,231,255,0.08)}
.nav-cta{background:rgba(110,231,255,0.08);color:var(--accent);border:1px solid rgba(110,231,255,0.18);border-radius:8px;padding:5px 14px;font-size:0.8rem;text-decoration:none}

/* LAYOUT */
main{max-width:var(--max);margin:0 auto;padding:2rem 1.5rem}
.main-grid{display:grid;grid-template-columns:1fr 300px;gap:2rem;align-items:start}
@media(max-width:900px){.main-grid{grid-template-columns:1fr}}

/* BREADCRUMB */
.breadcrumb{display:flex;align-items:center;gap:6px;font-size:0.78rem;color:var(--muted);margin-bottom:1.5rem;flex-wrap:wrap}
.breadcrumb a{color:var(--muted);text-decoration:none}.breadcrumb a:hover{color:var(--accent)}
.breadcrumb span{opacity:0.5}

/* PAGE HEADER */
.page-header{margin-bottom:2rem}
.page-icon{font-size:2.2rem;margin-bottom:0.75rem;display:block}
h1.page-title{font-family:'Syne',sans-serif;font-size:clamp(1.7rem,4vw,2.5rem);font-weight:800;line-height:1.1;margin-bottom:0.75rem}
.page-subtitle{color:var(--muted);font-size:1rem;max-width:600px;line-height:1.7}
.page-tags{display:flex;gap:6px;flex-wrap:wrap;margin-top:1rem}
.ptag{background:var(--surface2);border:1px solid var(--border);padding:3px 10px;border-radius:100px;font-size:0.73rem;color:var(--muted)}
.ptag.green{background:rgba(180,255,90,0.06);border-color:rgba(180,255,90,0.15);color:var(--accent2)}

/* TOOL CARD */
.tool-box{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;margin-bottom:2rem}
.tool-box-header{padding:1.25rem 1.5rem;border-bottom:1px solid var(--border);display:flex;align-items:center;justify-content:space-between}
.tool-box-header h2{font-size:1rem;font-weight:600}
.tool-body{padding:1.5rem}

/* DROP ZONE */
.drop-zone{border:2px dashed rgba(110,231,255,0.2);border-radius:12px;padding:2.5rem 2rem;text-align:center;cursor:pointer;transition:all 0.2s;background:rgba(110,231,255,0.015);position:relative}
.drop-zone:hover,.drop-zone.dragover{border-color:var(--accent);background:rgba(110,231,255,0.04)}
.drop-zone input[type=file]{position:absolute;inset:0;opacity:0;cursor:pointer;width:100%;height:100%}
.drop-icon{font-size:2.2rem;display:block;margin-bottom:0.6rem}
.drop-zone h3{font-size:0.95rem;font-weight:600;margin-bottom:0.3rem}
.drop-zone p{color:var(--muted);font-size:0.8rem}
.fmt-tags{display:flex;gap:5px;justify-content:center;flex-wrap:wrap;margin-top:0.75rem}
.fmt{background:var(--surface2);border:1px solid var(--border);padding:2px 9px;border-radius:100px;font-size:0.71rem;color:var(--muted)}

/* CONTROLS */
.ctrl-row{display:flex;gap:0.75rem;flex-wrap:wrap;margin:1.25rem 0;align-items:flex-end}
.ctrl-group{display:flex;flex-direction:column;gap:4px}
.ctrl-label{font-size:0.77rem;color:var(--muted)}
select,.btn,input[type=text],textarea{font-family:inherit;border-radius:9px;border:1px solid var(--border);background:var(--surface2);color:var(--text);padding:9px 15px;font-size:0.87rem;cursor:pointer;transition:all 0.2s;outline:none}
select:hover,.btn:hover{border-color:rgba(110,231,255,0.3)}
select:focus,input[type=text]:focus,textarea:focus{border-color:var(--accent)}
textarea{width:100%;resize:vertical;min-height:160px;cursor:text}
.btn-primary{background:var(--accent);color:#06060F;border-color:var(--accent);font-weight:700;cursor:pointer}
.btn-primary:hover{background:#8EEFFF;box-shadow:0 4px 20px rgba(110,231,255,0.2)}
.btn-success{background:var(--accent2);color:#06060F;border-color:var(--accent2);font-weight:700}
.btn-success:hover{background:#ccff7a}
.btn-outline{background:transparent;border-color:var(--border2);color:var(--accent)}
.btn-outline:hover{background:rgba(110,231,255,0.06)}
.btn:disabled{opacity:0.4;cursor:not-allowed}
input[type=range]{accent-color:var(--accent);cursor:pointer}
input[type=color]{width:44px;height:36px;border-radius:8px;border:1px solid var(--border);background:var(--surface2);cursor:pointer;padding:2px}

/* STATUS */
.status{padding:0.65rem 1.1rem;border-radius:9px;font-size:0.83rem;display:none;align-items:center;gap:7px;margin:0.75rem 0}
.status.ok{background:rgba(180,255,90,0.06);color:var(--accent2);border:1px solid rgba(180,255,90,0.15);display:flex}
.status.err{background:rgba(255,80,80,0.06);color:#FF7070;border:1px solid rgba(255,80,80,0.15);display:flex}
.status.load{background:rgba(110,231,255,0.06);color:var(--accent);border:1px solid rgba(110,231,255,0.15);display:flex}

/* RESULT */
.result-box{background:var(--surface);border:1px solid var(--border);border-radius:12px;overflow:hidden;margin-top:1rem}
.result-box img{max-width:100%;display:block;margin:0 auto;padding:1rem}
.preview-html{background:#fff;border-radius:10px;overflow:auto;max-height:400px;padding:1.5rem 2rem}
.preview-html *{color:#222;font-family:Georgia,serif;font-size:14px;line-height:1.7}
.preview-html table{border-collapse:collapse;width:100%}
.preview-html th{background:#f0f0f0;padding:6px 10px;border:1px solid #ccc}
.preview-html td{padding:5px 10px;border:1px solid #eee}

/* TABLE */
.tbl-scroll{overflow:auto;max-height:360px;border-radius:10px;border:1px solid var(--border)}
.dtable{width:100%;border-collapse:collapse;font-size:0.81rem}
.dtable th{background:var(--surface2);padding:8px 12px;text-align:left;font-weight:600;border-bottom:1px solid var(--border);white-space:nowrap;position:sticky;top:0}
.dtable td{padding:7px 12px;border-bottom:1px solid rgba(255,255,255,0.03);white-space:nowrap}
.dtable tr:hover td{background:var(--surface)}

/* CODE AREA */
.code-area{background:var(--surface2);border:1px solid var(--border);border-radius:10px;padding:1rem;font-family:monospace;font-size:0.82rem;overflow:auto;max-height:320px;white-space:pre;color:#c8d0e0;line-height:1.5}

/* STRENGTH */
.strength-bar{height:4px;border-radius:2px;background:var(--surface2);overflow:hidden;margin-top:0.5rem}
.strength-fill{height:100%;border-radius:2px;transition:all 0.3s;width:0%}

/* AD ZONE */
.ad-zone{background:var(--surface);border:1px solid var(--border);border-radius:11px;padding:1rem 1.25rem;text-align:center;position:relative;margin:1.5rem 0}
.ad-label{position:absolute;top:-8px;left:14px;background:var(--surface);padding:1px 9px;border-radius:100px;font-size:0.65rem;color:var(--muted);border:1px solid var(--border);letter-spacing:0.06em;text-transform:uppercase}
.ad-slot{background:var(--surface2);border-radius:7px;padding:1rem;color:var(--muted);font-size:0.78rem}

/* SIDEBAR */
.sidebar{}
.sidebar-box{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:1.25rem;margin-bottom:1.25rem}
.sidebar-box h3{font-size:0.9rem;font-weight:600;margin-bottom:1rem;color:var(--text)}
.tool-link-list{display:flex;flex-direction:column;gap:6px}
.tool-link{display:flex;align-items:center;gap:8px;text-decoration:none;padding:8px 10px;border-radius:8px;transition:all 0.2s;color:var(--muted);font-size:0.83rem}
.tool-link:hover{background:var(--surface2);color:var(--text)}
.tool-link span{font-size:1rem}

/* CONTENT SECTIONS */
.content-section{margin:2.5rem 0}
.content-section h2{font-family:'Syne',sans-serif;font-size:1.3rem;font-weight:700;margin-bottom:1rem;padding-bottom:0.5rem;border-bottom:1px solid var(--border)}
.content-section h3{font-size:1rem;font-weight:600;margin:1rem 0 0.4rem;color:var(--text)}
.content-section p{color:var(--muted);font-size:0.88rem;line-height:1.75;margin-bottom:0.75rem}
.steps-list{counter-reset:steps;display:flex;flex-direction:column;gap:0.75rem}
.step{display:flex;gap:1rem;align-items:flex-start}
.step-num{min-width:28px;height:28px;background:rgba(110,231,255,0.1);color:var(--accent);border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:0.8rem;font-weight:700;flex-shrink:0;margin-top:2px}
.step-text{font-size:0.87rem;color:var(--muted);line-height:1.65}
.step-text strong{color:var(--text)}

/* FAQ */
.faq-list{display:flex;flex-direction:column;gap:0.75rem}
.faq-item{background:var(--surface);border:1px solid var(--border);border-radius:10px;overflow:hidden}
.faq-q{padding:1rem 1.25rem;font-size:0.9rem;font-weight:600;cursor:pointer;display:flex;justify-content:space-between;align-items:center;user-select:none}
.faq-q::after{content:'＋';color:var(--accent);font-size:1rem;flex-shrink:0}
.faq-item.open .faq-q::after{content:'－'}
.faq-a{padding:0 1.25rem 1rem;font-size:0.85rem;color:var(--muted);line-height:1.75;display:none}
.faq-item.open .faq-a{display:block}

/* RELATED GRID */
.related-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(180px,1fr));gap:0.75rem}
.rel-card{background:var(--card);border:1px solid var(--border);border-radius:10px;padding:1rem;text-decoration:none;transition:all 0.2s;display:block}
.rel-card:hover{border-color:var(--border2);transform:translateY(-2px)}
.rel-card-icon{font-size:1.4rem;margin-bottom:0.5rem}
.rel-card h4{font-size:0.85rem;font-weight:600;color:var(--text);margin-bottom:0.2rem}
.rel-card p{font-size:0.75rem;color:var(--muted)}

/* QR */
#qr-canvas{display:block;margin:1.25rem auto;border-radius:10px;padding:10px;background:#fff}
.pass-output{background:var(--surface2);border:1px solid var(--border);border-radius:10px;padding:1rem 1.25rem;font-family:monospace;font-size:1rem;letter-spacing:0.04em;word-break:break-all;min-height:54px;display:flex;align-items:center;color:var(--text)}
.check-label{display:flex;align-items:center;gap:7px;font-size:0.85rem;cursor:pointer;color:var(--muted)}
.check-label input{accent-color:var(--accent);width:14px;height:14px}
.slider-row{display:flex;align-items:center;gap:1rem;margin:0.75rem 0}
.slider-val{background:var(--surface2);border:1px solid var(--border);border-radius:6px;padding:2px 10px;font-size:0.83rem;min-width:38px;text-align:center}

/* AUDIO */
#audio-canvas{width:100%;height:90px;display:block;border-radius:9px;background:var(--surface2);margin-bottom:1rem}
.audio-row{display:flex;align-items:center;gap:1rem}
.play-btn{width:42px;height:42px;border-radius:50%;background:var(--accent);border:none;cursor:pointer;font-size:0.95rem;color:#06060F;flex-shrink:0;display:flex;align-items:center;justify-content:center;transition:all 0.2s}
.play-btn:hover{transform:scale(1.08)}
.prog-outer{flex:1;height:4px;background:var(--surface2);border-radius:2px;cursor:pointer;position:relative}
.prog-inner{height:100%;background:var(--accent);border-radius:2px;width:0%;pointer-events:none}
.time-lbl{font-size:0.75rem;color:var(--muted);min-width:76px;text-align:right}

/* COLOR SWATCHES */
.swatch-grid{display:flex;gap:8px;flex-wrap:wrap;margin-top:1rem}
.swatch{width:60px;height:60px;border-radius:10px;cursor:pointer;position:relative;border:1px solid var(--border);transition:transform 0.15s}
.swatch:hover{transform:scale(1.08)}
.swatch-hex{position:absolute;bottom:-18px;left:50%;transform:translateX(-50%);font-size:0.65rem;color:var(--muted);white-space:nowrap}

/* MARKDOWN PREVIEW */
.md-preview{background:#fff;color:#222;border-radius:10px;padding:1.25rem 1.5rem;font-family:Georgia,serif;font-size:14px;line-height:1.8;min-height:120px;max-height:400px;overflow:auto}
.md-preview h1,.md-preview h2,.md-preview h3{font-family:Arial,sans-serif;margin:0.75rem 0 0.4rem;color:#111}
.md-preview code{background:#f3f3f3;padding:2px 5px;border-radius:4px;font-size:13px}
.md-preview pre{background:#f3f3f3;padding:0.75rem;border-radius:6px;overflow:auto}
.md-preview blockquote{border-left:3px solid #ccc;padding-left:1rem;color:#555;margin:0.75rem 0}
.md-preview a{color:#0070f3}

/* FOOTER */
footer{border-top:1px solid var(--border);padding:2rem 1.5rem;margin-top:3rem}
.footer-inner{max-width:var(--max);margin:0 auto;display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:1rem}
.footer-copy{color:var(--muted);font-size:0.78rem}
.footer-links{display:flex;gap:1.25rem}
.footer-links a{color:var(--muted);text-decoration:none;font-size:0.78rem;transition:color 0.2s}
.footer-links a:hover{color:var(--text)}

/* FAQ toggle */
.faq-item .faq-q{transition:color 0.2s}
.faq-item.open .faq-q{color:var(--accent)}

/* RESPONSIVE */
@media(max-width:768px){
  nav.sitenav .nav-links{display:none}
  .ctrl-row{flex-direction:column}
  main{padding:1.25rem 1rem}
}