/* Shared tool-page and article styles. */

.lede{max-width:48rem}
.tool-wrap{display:grid;gap:1.25rem}
@media (min-width:760px){.tool-io{display:grid;grid-template-columns:1fr 1fr;gap:1.25rem;align-items:start}}
.field{display:flex;flex-direction:column;gap:.35rem;margin-bottom:.9rem}
.field label{font-weight:600;font-size:.9rem}
.field .hint{color:var(--muted);font-size:.8rem}
input[type=text],input[type=number],input[type=date],input[type=datetime-local],input[type=password],input[type=email],input[type=search],select,textarea{
  width:100%;padding:.65rem .8rem;border:1px solid var(--border);border-radius:.7rem;background:var(--bg);color:var(--fg);font-size:1rem;font-family:inherit;transition:border-color .12s,box-shadow .12s}
textarea{min-height:9rem;resize:vertical}
input:focus,select:focus,textarea:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 4px var(--ring)}
/* brand accent for form controls (was browser-default blue) */
input[type=checkbox],input[type=radio],input[type=range]{accent-color:var(--accent)}
.row{display:flex;gap:.6rem;flex-wrap:wrap;align-items:flex-start}
.row>.field{flex:1;min-width:8rem;margin-bottom:0}

.btn{display:inline-flex;align-items:center;gap:.4rem;background:var(--accent);color:#fff;border:1px solid transparent;border-radius:.65rem;padding:.6rem 1.15rem;font-size:.95rem;font-weight:600;cursor:pointer;font-family:var(--font-ui);box-shadow:0 8px 20px -12px var(--ring);transition:transform .12s,box-shadow .12s,background .12s}
.btn:hover{transform:translateY(-1px);background:var(--accent-deep);box-shadow:0 12px 24px -12px var(--ring)}
.btn.secondary{background:transparent;color:var(--fg);border-color:var(--border)}
.btn.secondary:hover{background:var(--soft)}
.btn-row{display:flex;gap:.5rem;flex-wrap:wrap;margin-top:.5rem}

.seg{display:inline-flex;border:1px solid var(--border);border-radius:.6rem;overflow:hidden;flex-wrap:wrap}
.seg button{background:var(--card);color:var(--fg);border:0;border-right:1px solid var(--border);padding:.45rem .8rem;cursor:pointer;font-size:.9rem;font-family:inherit}
.seg button:last-child{border-right:0}
.seg button[aria-pressed="true"]{background:var(--accent);color:#fff}

.result{background:var(--soft);border:1px solid var(--border);border-radius:.7rem;padding:1rem;margin-top:.5rem;overflow-wrap:anywhere;word-break:break-word}
.result.big{font-size:1.6rem;font-weight:700;overflow-wrap:anywhere;word-break:break-word}
.result-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(120px,1fr));gap:.75rem}
.stat{background:var(--soft);border:1px solid var(--border);border-radius:.6rem;padding:.7rem;min-width:0}
.stat .k{font-size:.75rem;color:var(--muted);text-transform:uppercase;letter-spacing:.04em}
.stat .v{font-size:1.35rem;font-weight:700;overflow-wrap:anywhere;word-break:break-word}
output,.mono{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;overflow-wrap:anywhere}
.msg{font-size:.9rem;margin-top:.5rem}
.msg.error{color:#dc2626}
.msg.ok{color:#16a34a}
html.dark .msg.error{color:#f87171}
html.dark .msg.ok{color:#4ade80}

.trust{display:inline-flex;align-items:center;gap:.4rem;font-size:.85rem;color:var(--muted);background:var(--soft);border:1px solid var(--border);border-radius:999px;padding:.35rem .8rem;margin:.75rem 0 0}

.badge{display:inline-block;padding:.2rem .7rem;border-radius:999px;font-size:.85rem;font-weight:600}
.badge.green{background:#dcfce7;color:#166534}.badge.blue{background:#dbeafe;color:#1e40af}
.badge.amber{background:#fef3c7;color:#92400e}.badge.red{background:#fee2e2;color:#991b1b}

/* ---- rich tool-page sections: features / steps / use-cases / tips ---- */
.feat-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:.9rem;margin-top:.4rem}
.feat{background:var(--card);border:1px solid var(--border);border-radius:.85rem;padding:1.1rem;box-shadow:0 1px 2px rgba(60,30,10,.04)}
.feat h3{margin:0 0 .35rem;font-size:1.02rem;font-family:var(--font-display);letter-spacing:-.01em}
.feat p{margin:0;color:var(--muted);font-size:.92rem;line-height:1.55}
/* "How it works" step showcase — centred header + eyebrow cards + corner glow */
.steps-head{text-align:center;max-width:40rem;margin:0 auto 1.4rem}
.steps-showcase h2{text-align:center;font-size:1.75rem;line-height:1.2}
.accent-grad{background:linear-gradient(100deg,var(--accent),var(--accent2,#f7a336));-webkit-background-clip:text;background-clip:text;color:transparent}
.steps-sub{margin:.5rem 0 0;color:var(--muted);font-size:.98rem}
.steps{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:1rem;margin-top:.4rem}
.step-box{position:relative;overflow:hidden;background:var(--card);border:1px solid var(--border);border-radius:.95rem;padding:1.5rem 1.25rem 1.35rem;box-shadow:0 1px 2px rgba(60,30,10,.04);transition:transform .16s,box-shadow .16s,border-color .16s}
.step-box::before{content:"";position:absolute;top:-40%;right:-30%;width:70%;height:80%;background:radial-gradient(circle at center,color-mix(in srgb,var(--accent) 22%,transparent),transparent 70%);opacity:.5;pointer-events:none}
.step-box:hover{transform:translateY(-3px);border-color:color-mix(in srgb,var(--accent) 35%,var(--border));box-shadow:0 14px 30px -18px var(--ring)}
.step-eyebrow{font-family:var(--font-ui);font-weight:700;font-size:.72rem;letter-spacing:.14em;text-transform:uppercase;color:var(--accent);margin-bottom:.55rem}
.step-box h3{margin:0 0 .4rem;font-size:1.08rem;font-family:var(--font-display);letter-spacing:-.01em}
.step-box p{margin:0;color:var(--muted);font-size:.92rem;line-height:1.55;position:relative}
.uc-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:.9rem;margin-top:.4rem}
.usecase{border-left:3px solid var(--accent);background:var(--soft);border-radius:.5rem;padding:.85rem 1rem}
.usecase h3{margin:0 0 .3rem;font-size:1rem}
.usecase p{margin:0;color:var(--muted);font-size:.92rem;line-height:1.55}
ul.tips{margin:.4rem 0 0;padding-left:1.2rem}
ul.tips li{margin:.5rem 0;color:var(--fg)}

.block{margin:2.25rem 0}
.block h2{font-size:1.4rem;margin:0 0 .7rem;scroll-margin-top:5rem}
.block h3{font-size:1.1rem;margin:1.2rem 0 .4rem}
.block p,.block li{color:var(--fg)}
.prose p{margin:.6rem 0}
.prose ul,.prose ol{margin:.6rem 0;padding-left:1.3rem}
.prose li{margin:.25rem 0}
.example{background:var(--soft);border:1px solid var(--border);border-radius:.6rem;padding:.75rem 1rem;margin:.6rem 0;font-size:.95rem}
.example b{color:var(--accent)}

details.faq{border:1px solid var(--border);border-radius:.6rem;margin:.5rem 0;background:var(--card)}
details.faq summary{cursor:pointer;padding:.8rem 1rem;font-weight:600;list-style:none}
details.faq summary::-webkit-details-marker{display:none}
details.faq summary::after{content:"+";float:right;color:var(--muted)}
details.faq[open] summary::after{content:"–"}
details.faq .faq-a{padding:0 1rem 1rem;color:var(--muted)}

.related .rel-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(160px,1fr));gap:.6rem}
.rel-card{display:flex;align-items:center;gap:.5rem;padding:.6rem .7rem;border:1px solid var(--border);border-radius:.6rem;text-decoration:none;color:inherit;background:var(--card)}
.rel-card:hover{border-color:var(--accent)}
.rel-ico{color:var(--accent);display:inline-flex}
.rel-name{font-size:.9rem;font-weight:500}

/* Data tables (amortization, timezones, units) */
table.data{width:100%;border-collapse:collapse;font-size:.9rem;margin-top:.6rem}
table.data th,table.data td{border:1px solid var(--border);padding:.45rem .6rem;text-align:right}
table.data th:first-child,table.data td:first-child{text-align:left}
table.data thead th{background:var(--soft)}
.tbl-scroll{max-height:340px;overflow:auto;border-radius:.5rem}

/* Article */
article.post{max-width:44rem;margin:0 auto}
article.post h2{font-size:1.45rem;margin:1.8rem 0 .6rem;scroll-margin-top:5rem}
article.post h3{font-size:1.15rem;margin:1.2rem 0 .4rem}
article.post p{margin:.8rem 0}
article.post ul,article.post ol{padding-left:1.3rem}
article.post li{margin:.3rem 0}
.toc{background:var(--soft);border:1px solid var(--border);border-radius:.7rem;padding:1rem 1.25rem;margin:1.25rem 0}
.toc strong{display:block;margin-bottom:.4rem}
.toc ol{margin:0;padding-left:1.2rem}
.toc a{text-decoration:none}.toc a:hover{text-decoration:underline}
.post-meta{color:var(--muted);font-size:.9rem;margin:0 0 1rem}
.callout{background:color-mix(in srgb,var(--accent) 8%,transparent);border-left:3px solid var(--accent);border-radius:.4rem;padding:.75rem 1rem;margin:1rem 0}

/* conversion pages */
.conv-io{display:grid;grid-template-columns:1fr auto 1fr;gap:.75rem;align-items:end}
.conv-io .field{margin-bottom:0}
.conv-eq{font-size:1.6rem;font-weight:800;color:var(--muted);padding-bottom:.45rem;text-align:center}
@media (max-width:560px){.conv-io{grid-template-columns:1fr}.conv-eq{padding:.1rem 0}}

/* color swatch */
.swatch{width:100%;height:5rem;border-radius:.6rem;border:1px solid var(--border)}
.color-out{display:grid;grid-template-columns:1fr 1fr;gap:.5rem}
.color-out .field{margin:0}

/* password strength meter */
.meter{height:.55rem;border-radius:999px;background:var(--border);overflow:hidden;margin:.4rem 0}
.meter>span{display:block;height:100%;width:0;transition:width .2s,background .2s}

/* thumbnails for image tools */
.thumbs{display:grid;grid-template-columns:repeat(auto-fill,minmax(140px,1fr));gap:.75rem;margin-top:.75rem}
.thumb{border:1px solid var(--border);border-radius:.6rem;padding:.5rem;background:var(--card);font-size:.8rem}
.thumb img{width:100%;height:auto;border-radius:.4rem;display:block;margin-bottom:.4rem;background:repeating-conic-gradient(#e2e8f0 0% 25%,transparent 0% 50%) 50%/16px 16px}
.dropzone{border:2px dashed var(--border);border-radius:.8rem;padding:1.5rem;text-align:center;color:var(--muted);cursor:pointer}
.dropzone.drag{border-color:var(--accent);background:color-mix(in srgb,var(--accent) 6%,transparent)}

/* JSON viewer tree */
.json-tree{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:.9rem;line-height:1.6;overflow-x:auto;margin-top:.5rem}
.jv-kids{padding-left:1.15rem;border-left:1px dashed var(--border);margin-left:.35rem}
.jv-node.collapsed>.jv-kids{display:none}
.jv-node.collapsed>.jv-branch .jv-brace::after{content:" … "attr(data-c)}
.jv-row{white-space:nowrap}
.jv-branch{cursor:pointer;user-select:none}
.jv-branch:hover{background:var(--soft);border-radius:.3rem}
.jv-tog{display:inline-block;width:1rem;color:var(--muted)}
.jv-key{color:var(--accent);font-weight:600}
.jv-count{color:var(--muted);font-size:.8rem}
.jv-brace{color:var(--muted)}
.jv-val.string{color:#0a7d34}.jv-val.number{color:#b5480a}.jv-val.boolean{color:#8a4bd0}.jv-val.jv-null{color:var(--muted);font-style:italic}
html.dark .jv-val.string{color:#5fd38a}html.dark .jv-val.number{color:#f0a35e}html.dark .jv-val.boolean{color:#c39bf0}

/* math worksheet generator */
ol.mg-grid{list-style:decimal;columns:2;column-gap:2.5rem;padding-left:1.4rem;margin:.4rem 0}
@media (min-width:760px){ol.mg-grid{columns:3}}
ol.mg-grid li{break-inside:avoid;margin:.35rem 0;font-size:1.02rem;font-variant-numeric:tabular-nums}
.mg-blank{display:inline-block;min-width:2.5rem;border-bottom:1px solid var(--border);margin-left:.3rem}
.mg-a{color:var(--accent)}
@media print{
  header,footer,.crumbs,.btn-row,.hint,.msg,.related,.block,.faq,#read-more,.trust,.field,.row{display:none !important}
  .tool-card,.tool-wrap{border:0 !important;box-shadow:none !important;background:#fff !important;padding:0 !important}
  .mg-blank{min-width:3rem}
  ol.mg-grid{columns:2}
  body{background:#fff;color:#000}
}

/* Pomodoro timer */
.pomo{text-align:center;background:var(--card);border:1px solid var(--border);border-radius:1.1rem;padding:2rem 1.25rem;box-shadow:0 1px 2px rgba(60,30,10,.04);transition:background .3s,border-color .3s}
.pomo[data-phase="short"],.pomo[data-phase="long"]{background:color-mix(in srgb,var(--accent) 7%,var(--card));border-color:color-mix(in srgb,var(--accent) 30%,var(--border))}
.pomo-phase{font-family:var(--font-ui);font-weight:700;font-size:.8rem;letter-spacing:.16em;text-transform:uppercase;color:var(--accent)}
.pomo-time{font-family:var(--font-display);font-weight:600;font-variant-numeric:tabular-nums;font-size:clamp(3.5rem,14vw,5.5rem);line-height:1.05;margin:.4rem 0 .2rem;letter-spacing:-.02em}
.pomo-round{color:var(--muted);font-size:.92rem}