/* texttocsv.com — mobile-first stylesheet */
:root{
  --brand:#0d9488;--brand-d:#0f766e;--brand-l:#ccfbf1;--accent:#f59e0b;
  --ink:#0f172a;--ink-2:#334155;--muted:#64748b;--line:#e2e8f0;--line-2:#cbd5e1;
  --bg:#f8fafc;--surface:#ffffff;--surface-2:#f1f5f9;--danger:#dc2626;--ok:#059669;
  --wrap:1140px;--radius:16px;--shadow:0 1px 3px rgba(15,23,42,.08),0 1px 2px rgba(15,23,42,.04);
  --shadow-lg:0 10px 30px rgba(15,23,42,.12);--fs-sm:.875rem;
  --mono:ui-monospace,SFMono-Regular,Menlo,Consolas,"Liberation Mono",monospace;
  --sans:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;font-family:var(--sans);color:var(--ink);background:var(--bg);line-height:1.65;font-size:16px}
h1,h2,h3,h4,h5,h6{line-height:1.22;color:var(--ink);margin:0 0 .5em;font-weight:740}
h1{font-size:clamp(1.6rem,4.5vw,2.5rem);letter-spacing:-.02em}
h2{font-size:clamp(1.35rem,3.4vw,1.9rem);letter-spacing:-.01em}
h3{font-size:clamp(1.12rem,2.4vw,1.3rem)}
h4{font-size:1.02rem}h5{font-size:.95rem}h6{font-size:.86rem;text-transform:uppercase;letter-spacing:.04em;color:var(--muted)}
p{margin:0 0 1rem}
a{color:var(--brand-d);text-decoration:none}
a:hover{text-decoration:underline}
img,svg{max-width:100%;display:block}
svg{width:1.2em;height:1.2em;flex:none}
.byline svg{width:14px;height:14px}
.note svg{display:inline-block;width:17px;height:17px;vertical-align:-.18em;margin-right:.12em}
.tc-drop svg{width:50px;height:50px;margin:.15rem auto .4rem;color:var(--brand-d)}
.tc-bdrop svg{width:52px;height:52px;margin:0 auto .55rem;color:var(--brand-d)}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 clamp(1rem,4vw,2rem)}
.eyebrow{display:inline-block;font-size:.78rem;font-weight:760;letter-spacing:.08em;text-transform:uppercase;color:var(--brand-d);background:var(--brand-l);padding:.3rem .7rem;border-radius:999px;margin-bottom:.7rem}
.lead{font-size:clamp(1.02rem,2.2vw,1.2rem);color:var(--ink-2);max-width:64ch}

/* ---------- header ---------- */
.site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.9);backdrop-filter:saturate(160%) blur(10px);border-bottom:1px solid var(--line)}
.nav{display:flex;align-items:center;gap:1rem;min-height:60px}
.brand{display:flex;align-items:center;gap:.5rem;font-weight:820;color:var(--ink);font-size:1.06rem;letter-spacing:-.01em}
.brand:hover{text-decoration:none}
.brand .mark{width:30px;height:30px;border-radius:8px;background:linear-gradient(135deg,var(--brand),var(--brand-d));display:flex;align-items:center;justify-content:center;color:#fff;font-weight:800;font-size:.8rem}
.brand b{color:var(--brand-d)}
.nav-links{margin-left:auto;display:flex;align-items:center;gap:.15rem;flex-wrap:wrap}
.nav-links a{color:var(--ink-2);font-weight:620;font-size:.92rem;padding:.5rem .68rem;border-radius:9px}
.nav-links a:hover{color:var(--ink);background:var(--surface-2);text-decoration:none}
.nav-links a.active{color:var(--brand-d)}
.nav-cta{background:var(--brand)!important;color:#fff!important}
.nav-cta:hover{background:var(--brand-d)!important}
.nav-toggle{display:none}
.nav-burger{display:none;margin-left:auto;width:42px;height:42px;border:1px solid var(--line);border-radius:10px;align-items:center;justify-content:center;color:var(--ink);cursor:pointer;background:var(--surface)}
.nav-burger svg{width:22px;height:22px}
@media(max-width:900px){
  .nav-burger{display:flex}
  .nav-links{position:fixed;inset:60px 0 auto 0;flex-direction:column;align-items:stretch;gap:0;background:var(--surface);border-bottom:1px solid var(--line);padding:.4rem .8rem .9rem;margin:0;transform:translateY(-135%);transition:transform .26s ease;box-shadow:var(--shadow)}
  .nav-links a{padding:.85rem .6rem;border-radius:10px;font-size:1rem}
  .nav-cta{margin-top:.4rem;text-align:center}
  .nav-toggle:checked ~ .nav-links{transform:translateY(0)}
}

/* ---------- sections ---------- */
.section{padding:clamp(2.2rem,5vw,3.6rem) 0}
.section.alt{background:var(--surface)}
.section.hero{padding-top:clamp(1.6rem,4vw,2.6rem);padding-bottom:clamp(1.4rem,3vw,2rem)}
.lead-head{max-width:62ch;margin-bottom:1.3rem}
.lead-head .eyebrow{margin-bottom:.5rem}

/* ---------- buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:.5rem;font-weight:680;font-size:.95rem;line-height:1;padding:.78rem 1.15rem;border-radius:11px;border:1px solid transparent;cursor:pointer;transition:.15s;font-family:inherit;white-space:nowrap}
.btn svg{width:18px;height:18px}
.btn-primary{background:var(--brand);color:#fff}
.btn-primary:hover{background:var(--brand-d);text-decoration:none}
.btn-ghost{background:var(--surface);color:var(--ink);border-color:var(--line-2)}
.btn-ghost:hover{background:var(--surface-2);text-decoration:none}
.btn-block{width:100%}
.btn-sm{padding:.6rem .9rem;font-size:.88rem}
.btn:disabled{opacity:.5;cursor:not-allowed}

/* ---------- THE CONVERTER TOOL ---------- */
.tc-tool{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow-lg);overflow:hidden}
.tc-head{display:flex;align-items:center;justify-content:space-between;gap:.8rem;flex-wrap:wrap;padding:.95rem 1.1rem;border-bottom:1px solid var(--line);background:var(--surface-2)}
.tc-head .tc-title{display:flex;align-items:center;gap:.5rem;font-weight:740;font-size:1.02rem}
.tc-head .tc-title svg{width:20px;height:20px;color:var(--brand-d)}
.tc-status{font-size:var(--fs-sm);color:var(--muted)}
.tc-panes{display:grid;grid-template-columns:1fr;gap:0}
@media(min-width:860px){.tc-panes{grid-template-columns:1fr 1fr}}
.tc-pane{padding:1rem 1.1rem;min-width:0}
.tc-pane+.tc-pane{border-top:1px solid var(--line)}
@media(min-width:860px){.tc-pane+.tc-pane{border-top:0;border-left:1px solid var(--line)}}
.tc-pane-head{display:flex;align-items:center;justify-content:space-between;gap:.5rem;margin-bottom:.55rem}
.tc-pane-head .glabel{font-weight:680;font-size:.9rem;color:var(--ink-2)}
.tc-mini{display:flex;gap:.4rem}
.tc-area{width:100%;min-height:200px;resize:vertical;border:1px solid var(--line-2);border-radius:10px;padding:.7rem .8rem;font-family:var(--mono);font-size:.84rem;line-height:1.5;color:var(--ink);background:#fff;tab-size:4}
.tc-area:focus{outline:2px solid var(--brand);outline-offset:1px;border-color:var(--brand)}
#tc-out{background:var(--surface-2)}
.tc-drop{border:2px dashed var(--line-2);border-radius:10px;padding:.6rem .8rem;text-align:center;color:var(--muted);font-size:var(--fs-sm);margin-top:.55rem;cursor:pointer;transition:.15s}
.tc-drop:hover,.tc-drop.drag{border-color:var(--brand);background:var(--brand-l);color:var(--brand-d)}
.tc-drop b{color:var(--brand-d)}

/* options bar */
.tc-options{border-top:1px solid var(--line);background:var(--surface-2);padding:.85rem 1.1rem;display:flex;flex-wrap:wrap;gap:.8rem 1.1rem;align-items:flex-end}
.tc-grp{display:flex;flex-direction:column;gap:.28rem}
.tc-grp .glabel{font-size:.72rem;font-weight:700;letter-spacing:.03em;text-transform:uppercase;color:var(--muted)}
.tc-select,.tc-input{font-family:inherit;font-size:.9rem;padding:.5rem .6rem;border:1px solid var(--line-2);border-radius:9px;background:#fff;color:var(--ink);min-height:40px}
.tc-input{width:130px}
.tc-check{display:inline-flex;align-items:center;gap:.4rem;font-size:.88rem;color:var(--ink-2);cursor:pointer;padding:.5rem 0}
.tc-check input{width:17px;height:17px;accent-color:var(--brand)}

/* actions + stats */
.tc-actions{display:flex;flex-wrap:wrap;gap:.55rem;padding:.85rem 1.1rem;border-top:1px solid var(--line)}
.tc-stats{display:flex;flex-wrap:wrap;gap:.5rem .9rem;padding:.7rem 1.1rem;border-top:1px solid var(--line);font-size:var(--fs-sm);color:var(--muted)}
.tc-stats b{color:var(--ink)}
.tc-stats .warn b{color:var(--danger)}
.tc-stats .ok{color:var(--ok)}

/* preview table */
.tc-preview{padding:.4rem 1.1rem 1rem;overflow:auto;max-height:360px}
.tc-empty{color:var(--muted);font-size:var(--fs-sm);padding:.8rem 0;margin:0}
.tc-grid{border-collapse:collapse;font-size:.82rem;font-family:var(--mono);width:max-content;min-width:100%}
.tc-grid td,.tc-grid th{border:1px solid var(--line);padding:.32rem .55rem;white-space:nowrap;max-width:240px;overflow:hidden;text-overflow:ellipsis}
.tc-grid th{background:var(--brand-l);color:var(--brand-d);font-weight:700;position:sticky;top:0}
.tc-grid tr:nth-child(even) td{background:var(--surface-2)}
.tc-more{font-size:.78rem;color:var(--muted);margin:.5rem 0 0}

/* history */
.tc-history{padding:0 1.1rem 1rem}
.tc-hist-head{display:flex;justify-content:space-between;align-items:center;font-size:.8rem;color:var(--muted);font-weight:600;margin-bottom:.4rem}
.tc-link{background:none;border:0;color:var(--brand-d);font:inherit;font-size:.8rem;cursor:pointer;padding:0}
.tc-hist-list{display:flex;flex-direction:column;gap:.4rem}
.tc-hist-item{text-align:left;background:var(--surface-2);border:1px solid var(--line);border-radius:9px;padding:.5rem .65rem;cursor:pointer;font:inherit;display:flex;flex-direction:column;gap:.15rem}
.tc-hist-item:hover{border-color:var(--brand);background:var(--brand-l)}
.tc-hist-item b{font-size:.82rem;color:var(--ink)}
.tc-hist-item span{font-size:.74rem;color:var(--muted);font-family:var(--mono);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}

/* batch */
.tc-batch{padding:1rem 1.1rem}
.tc-bdrop{border:2px dashed var(--line-2);border-radius:12px;padding:1.4rem 1rem;text-align:center;color:var(--muted);cursor:pointer;transition:.15s}
.tc-bdrop:hover,.tc-bdrop.drag{border-color:var(--brand);background:var(--brand-l);color:var(--brand-d)}
.tc-blist{margin-top:.8rem;display:flex;flex-direction:column;gap:.4rem}
.tc-brow{display:flex;align-items:center;gap:.6rem;background:var(--surface-2);border:1px solid var(--line);border-radius:9px;padding:.5rem .7rem;font-size:.86rem}
.tc-bname{flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-family:var(--mono)}
.tc-blink{color:var(--brand-d);cursor:pointer;font-weight:600}
.tc-bwait{color:var(--muted);font-size:.78rem}
.tc-bdel{background:none;border:0;color:var(--muted);font-size:1.1rem;cursor:pointer;line-height:1}
.tc-bstatus{font-size:var(--fs-sm);color:var(--muted);margin-top:.6rem}

/* ---------- cards / grids ---------- */
.grid{display:grid;gap:1rem}
.grid-2,.grid-3,.grid-4{grid-template-columns:1fr}
@media(min-width:640px){.grid-2,.grid-3{grid-template-columns:1fr 1fr}.grid-4{grid-template-columns:1fr 1fr}}
@media(min-width:980px){.grid-3{grid-template-columns:repeat(3,1fr)}.grid-4{grid-template-columns:repeat(4,1fr)}}
.card{background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:1.1rem 1.15rem;transition:.15s}
a.card:hover{border-color:var(--brand);box-shadow:var(--shadow);text-decoration:none;transform:translateY(-1px)}
.card .ico{width:38px;height:38px;border-radius:10px;background:var(--brand-l);color:var(--brand-d);display:flex;align-items:center;justify-content:center;margin-bottom:.6rem}
.card .ico svg{width:20px;height:20px}
.card h3{margin-bottom:.3rem;font-size:1.04rem}
.card p{margin:0;color:var(--muted);font-size:.9rem}
.card .arrow{color:var(--brand-d);font-size:.85rem;font-weight:600;margin-top:.5rem;display:inline-block}

/* tags / pills */
.pill{display:inline-flex;align-items:center;gap:.35rem;font-size:.82rem;font-weight:600;color:var(--ink-2);background:var(--surface);border:1px solid var(--line);padding:.32rem .6rem;border-radius:999px}
.pill svg{width:14px;height:14px;color:var(--brand-d)}
.hero-badges{display:flex;flex-wrap:wrap;gap:.5rem;margin-top:1rem}
.tags{display:flex;flex-wrap:wrap;gap:.45rem;margin-top:1rem}
.tags a{font-size:.82rem;color:var(--ink-2);background:var(--surface-2);border:1px solid var(--line);padding:.3rem .6rem;border-radius:8px}
.tags a:hover{border-color:var(--brand);color:var(--brand-d);text-decoration:none}

/* prose */
.prose{max-width:74ch;overflow-wrap:break-word}
.prose h2{margin-top:1.8rem}
.prose h3{margin-top:1.4rem}
.prose ul,.prose ol{margin:0 0 1rem;padding-left:1.3rem}
.prose li{margin-bottom:.4rem}
.prose code{background:var(--surface-2);border:1px solid var(--line);border-radius:5px;padding:.08em .35em;font-size:.88em;font-family:var(--mono);overflow-wrap:anywhere}
.prose pre{background:#0f172a;color:#e2e8f0;border-radius:12px;padding:1rem 1.1rem;overflow:auto;font-size:.82rem;line-height:1.55;margin:0 0 1.2rem}
.prose pre code{background:none;border:0;padding:0;color:inherit;font-size:inherit}
.codecard{margin:0 0 1.2rem}
.codecard .codecap{font-size:.78rem;color:var(--muted);font-weight:600;margin-bottom:.35rem}

/* breadcrumb */
.crumbs{background:var(--surface)}
.crumbs .wrap{padding-top:.7rem;padding-bottom:.1rem}
.crumbs ol{list-style:none;display:flex;flex-wrap:wrap;gap:.35rem;margin:0;padding:0;font-size:.82rem;color:var(--muted)}
.crumbs li::after{content:"›";margin-left:.35rem;color:var(--line-2)}
.crumbs li:last-child::after{content:""}
.crumbs a{color:var(--muted)}.crumbs a:hover{color:var(--brand-d)}

/* steps */
.steps{counter-reset:s;display:grid;gap:.8rem;margin:0}
@media(min-width:760px){.steps{grid-template-columns:repeat(3,1fr)}}
.step{background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:1rem 1.1rem;position:relative}
.step::before{counter-increment:s;content:counter(s);position:absolute;top:-.7rem;left:1rem;width:1.7rem;height:1.7rem;border-radius:50%;background:var(--brand);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:.85rem}
.step h3{margin:.5rem 0 .3rem;font-size:1rem}
.step p{margin:0;color:var(--muted);font-size:.88rem}

/* related */
.related-grid{display:grid;gap:.8rem;grid-template-columns:1fr}
@media(min-width:640px){.related-grid{grid-template-columns:1fr 1fr}}
@media(min-width:980px){.related-grid{grid-template-columns:repeat(3,1fr)}}

/* FAQ */
.faq{max-width:820px}
.faq details{border:1px solid var(--line);border-radius:11px;margin-bottom:.6rem;background:var(--surface);overflow:hidden}
.faq summary{padding:.9rem 1.05rem;font-weight:660;cursor:pointer;list-style:none;display:flex;justify-content:space-between;gap:1rem;align-items:center}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";color:var(--brand-d);font-size:1.2rem;font-weight:400}
.faq details[open] summary::after{content:"−"}
.faq .ans{padding:0 1.05rem 1rem;color:var(--ink-2);font-size:.93rem}
.faq .ans p{margin:0 0 .6rem}

/* ad slots */
.ad-slot{margin:1.2rem auto;max-width:var(--wrap)}
.ad-inner{background:var(--surface-2);border:1px dashed var(--line-2);border-radius:12px;min-height:90px;display:flex;align-items:center;justify-content:center;color:#94a3b8;font-size:.78rem;letter-spacing:.05em;text-transform:uppercase}

/* byline */
.byline{display:flex;align-items:center;gap:.55rem;color:var(--muted);font-size:.85rem;margin:.4rem 0 1.1rem}
.byline .dot{width:5px;height:5px;border-radius:50%;background:var(--line-2)}
.byline a{color:var(--brand-d)}

/* feedback */
.quote{background:var(--surface);border:1px solid var(--line);border-left:3px solid var(--brand);border-radius:10px;padding:1rem 1.15rem}
.quote p{margin:0 0 .5rem;font-style:italic;color:var(--ink-2)}
.quote .who{font-size:.82rem;color:var(--muted);font-style:normal;font-weight:600}

/* ---------- footer ---------- */
.site-footer{background:#0b1220;color:#94a3b8;margin-top:2.5rem;padding:2.4rem 0 1.4rem}
.footer-grid{display:grid;gap:1.6rem;grid-template-columns:1fr}
@media(min-width:680px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr}}
@media(min-width:980px){.footer-grid{grid-template-columns:1.5fr repeat(4,minmax(120px,1fr))}}
.footer-brand .brand{color:#fff}
.footer-brand .brand b{color:var(--brand-l)}
.footer-brand p{color:#8b93a4;font-size:.88rem;margin-top:.6rem;max-width:36ch}
.fcol h4{color:#e2e8f0;font-size:.82rem;text-transform:uppercase;letter-spacing:.05em;margin-bottom:.7rem}
.fcol a{display:block;color:#94a3b8;font-size:.88rem;padding:.22rem 0}
.fcol a:hover{color:#fff;text-decoration:none}
.foot-bottom{border-top:1px solid #1e293b;margin-top:1.8rem;padding-top:1.1rem;display:flex;flex-wrap:wrap;gap:.6rem 1.2rem;justify-content:space-between;align-items:center;font-size:.82rem;color:#64748b}
.foot-bottom a{color:#94a3b8}

/* cookie */
.cookie{position:fixed;left:1rem;right:1rem;bottom:1rem;max-width:560px;margin:0 auto;background:#0f172a;color:#e6e9f1;border-radius:14px;padding:1rem 1.1rem;box-shadow:var(--shadow-lg);z-index:80;display:flex;flex-wrap:wrap;gap:.8rem;align-items:center;justify-content:space-between}
.cookie p{margin:0;font-size:.84rem;color:#cbd5e1;flex:1;min-width:200px}
.cookie a{color:var(--brand-l)}
.cookie button{background:var(--brand);color:#fff;border:0;border-radius:9px;padding:.55rem 1rem;font-weight:600;cursor:pointer;font-family:inherit}

/* 404 */
.nf{text-align:center;padding:4rem 0}
.nf .big{font-size:clamp(3.5rem,12vw,6rem);font-weight:820;color:var(--brand);line-height:1;letter-spacing:-.03em}

/* utility */
.hidden{display:none!important}
.mt-1{margin-top:.6rem}.mt-2{margin-top:1.2rem}
.center{text-align:center}
.note{background:var(--brand-l);border:1px solid #99f6e4;border-radius:11px;padding:.85rem 1rem;font-size:.9rem;color:#115e59}
.warnbox{background:#fef3c7;border:1px solid #fde68a;border-radius:11px;padding:.85rem 1rem;font-size:.9rem;color:#92400e}