/**
 * CovertItAll - Optimized Stylesheet
 * Minimal, Fast, Responsive.
 */

:root {
    --bg: #ffffff;
    --card: #ffffff;
    --soft: #f5f5f5;
    --line: #e5e5e5;
    --text: #101010;
    --muted: #5f5f5f;
    --max: 960px;
    --radius: 16px;
    --primary: #111111;
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    text-rendering: optimizeLegibility;
    -webkit-font-smoothing: antialiased;
}

a {
    color: inherit;
}

.wrap {
    max-width: var(--max);
    margin: 0 auto;
    padding: 0 20px;
}

header {
    position: sticky;
    top: 0;
    background: rgba(255, 255, 255, 0.94);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--line);
    z-index: 20;
}

.topbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 14px 0;
    gap: 16px;
}

.brand {
    font-weight: 700;
    text-decoration: none;
}

.brand small {
    display: block;
    color: var(--muted);
    font-weight: 400;
    font-size: 12px;
}

nav {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
}

nav a {
    text-decoration: none;
    color: var(--muted);
    transition: color 0.2s ease;
}

nav a:hover {
    color: var(--text);
}

main {
    padding: 28px 0 56px;
}

.hero, .card, .tool, .content, .faq, .trust, .list-grid article, .blog-card, .ad-safe {
    background: var(--card);
    border: 1px solid var(--line);
    border-radius: var(--radius);
}

.hero {
    padding: 26px;
}

.tool {
    padding: 20px;
}

.content, .faq, .trust, .blog-card, .card {
    padding: 22px;
}

h1, h2, h3 {
    line-height: 1.2;
    margin: 0 0 12px;
}

h1 {
    font-size: clamp(28px, 4vw, 40px);
}

h2 {
    font-size: clamp(22px, 3vw, 28px);
    margin-top: 0;
}

.lead {
    font-size: 18px;
    color: var(--muted);
    margin: 0;
}

.section {
    margin-top: 22px;
}

.muted {
    color: var(--muted);
}

.kicker {
    font-size: 13px;
    letter-spacing: .06em;
    text-transform: uppercase;
    color: var(--muted);
    margin-bottom: 8px;
}

.button, .chip {
    display: inline-block;
    text-decoration: none;
    border: 1px solid var(--line);
    border-radius: 999px;
    padding: 10px 16px;
    background: #fff;
    transition: background 0.2s ease;
}

.button:hover, .chip:hover {
    background: var(--soft);
}

.quick-links {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    margin-top: 16px;
}

.list-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 16px;
}

.list-grid article {
    padding: 18px;
}

.list-grid h3 {
    font-size: 20px;
}

.converter-shell {
    display: grid;
    grid-template-columns: 1fr;
    gap: 18px;
}

.converter-box {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    gap: 12px;
    align-items: end;
}

.converter-box label {
    display: block;
    font-size: 14px;
    color: var(--muted);
    margin-bottom: 6px;
}

.converter-box input, .converter-box select {
    width: 100%;
    padding: 14px;
    border: 1px solid var(--line);
    border-radius: 12px;
    font-size: 18px;
    appearance: none;
}

.converter-box .swap {
    align-self: center;
    font-size: 24px;
    padding: 8px;
}

.result-line {
    margin-top: 14px;
    padding: 14px;
    border-radius: 12px;
    background: var(--soft);
    font-size: 18px;
}

.meta-line {
    font-size: 14px;
    color: var(--muted);
    margin-top: 10px;
}

.compact-points {
    padding-left: 18px;
    margin: 10px 0 0;
}

.ad-safe {
    margin-top: 20px;
    padding: 16px;
    background: #fafafa;
}

.ad-safe p {
    margin: 0;
    font-size: 14px;
    color: var(--muted);
}

.ad-slot {
    margin-top: 10px;
    min-height: 90px;
    border: 1px dashed #cfcfcf;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #777;
    font-size: 14px;
    background: #fff;
}

details {
    border-top: 1px solid var(--line);
    padding-top: 10px;
}

details summary {
    cursor: pointer;
    font-weight: 700;
}

table {
    width: 100%;
    border-collapse: collapse;
    font-size: 15px;
}

th, td {
    padding: 10px;
    border-bottom: 1px solid var(--line);
    text-align: left;
}

footer {
    border-top: 1px solid var(--line);
    padding: 28px 0 48px;
}

footer .footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 20px;
}

footer a {
    text-decoration: none;
    color: var(--muted);
}

footer a:hover {
    color: var(--text);
}

.callout {
    border-left: 4px solid var(--primary);
    padding: 12px 14px;
    background: var(--soft);
    border-radius: 8px;
    margin: 16px 0;
}

.blog-meta {
    font-size: 14px;
    color: var(--muted);
    margin-bottom: 14px;
}

.cookie-banner {
    position: fixed;
    left: 16px;
    right: 16px;
    bottom: 16px;
    z-index: 60;
    background: #111;
    color: #fff;
    border-radius: 16px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, .18);
}

.cookie-inner {
    max-width: var(--max);
    margin: 0 auto;
    padding: 16px 20px;
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 14px;
    align-items: center;
}

.cookie-inner p {
    margin: 0;
    font-size: 14px;
    color: #e8e8e8;
}

.cookie-actions {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.cookie-actions button {
    border: 1px solid rgba(255, 255, 255, .18);
    background: #fff;
    color: #111;
    border-radius: 999px;
    padding: 10px 14px;
    font: inherit;
    cursor: pointer;
    transition: opacity 0.2s ease;
}

.cookie-actions button:hover {
    opacity: 0.9;
}

.cookie-actions .secondary {
    background: transparent;
    color: #fff;
}

.content a.inline-link, .trust a.inline-link {
    color: #0a58ca;
    text-decoration: underline;
}

@media (max-width: 800px) {
    .converter-box {
        grid-template-columns: 1fr;
    }
    footer .footer-grid {
        grid-template-columns: 1fr;
    }
    header {
        position: static;
    }
    .cookie-inner {
        grid-template-columns: 1fr;
    }
}


/* V1.2.2 logo + breadcrumb consistency */
.brand{display:inline-flex;align-items:center;gap:12px;min-width:0;text-decoration:none}
.brand-logo-set{display:inline-flex;align-items:center;line-height:0;flex:0 0 auto}
.brand-logo-set img{display:block;height:40px;width:auto;max-width:100%;object-fit:contain}
.brand small{display:block;line-height:1.2}
.logo-light{display:block}
.logo-dark{display:none}
html[data-theme="dark"] .logo-light{display:none}
html[data-theme="dark"] .logo-dark{display:block}
.breadcrumbs{display:flex;flex-wrap:wrap;gap:8px;align-items:center;margin:0 0 18px;color:var(--muted);font-size:.92rem}
.breadcrumbs a{text-decoration:none;color:var(--muted)}
.breadcrumbs .sep{opacity:.55}
@media (max-width:720px){.brand-logo-set img{height:34px}}
@media (prefers-color-scheme: dark){html:not([data-theme]) .logo-light{display:none}html:not([data-theme]) .logo-dark{display:block}}
@media (prefers-color-scheme: light){html:not([data-theme]) .logo-light{display:block}html:not([data-theme]) .logo-dark{display:none}}


/* V1.2.3 FINAL PATCH: logo visibility guard + temperature thermometer */
.brand-logo-set .logo-light,
.brand-logo-set .logo-dark{display:none!important}
html[data-theme="light"] .brand-logo-set .logo-light{display:block!important}
html[data-theme="light"] .brand-logo-set .logo-dark{display:none!important}
html[data-theme="dark"] .brand-logo-set .logo-light{display:none!important}
html[data-theme="dark"] .brand-logo-set .logo-dark{display:block!important}
@media (prefers-color-scheme: light){html:not([data-theme]) .brand-logo-set .logo-light{display:block!important}html:not([data-theme]) .brand-logo-set .logo-dark{display:none!important}}
@media (prefers-color-scheme: dark){html:not([data-theme]) .brand-logo-set .logo-light{display:none!important}html:not([data-theme]) .brand-logo-set .logo-dark{display:block!important}}
.site-logo-link,.brand{gap:0;align-items:center}
.brand-logo-set{display:inline-flex;align-items:center;max-width:100%;overflow:hidden}
.brand-logo-set img{height:40px;width:auto;max-width:100%;object-fit:contain}

.temperature-thermometer-card{margin-top:18px;padding:18px;border:1px solid var(--border-color, rgba(255,255,255,.08));border-radius:16px;background:var(--card-bg, rgba(255,255,255,.03));box-shadow:0 8px 24px rgba(0,0,0,.12)}
.temperature-thermometer-header{margin-bottom:14px}
.temperature-thermometer-title{margin:0 0 4px;font-size:1.05rem;line-height:1.2}
.temperature-thermometer-subtitle{margin:0;font-size:.92rem;color:var(--text-muted, var(--muted-text, #6b7280))}
.temperature-thermometer-wrap{position:relative}
.temperature-thermometer-scale{position:relative;width:100%;height:18px;border-radius:999px;overflow:hidden;border:1px solid rgba(255,255,255,.08);background:linear-gradient(90deg,#2563eb 0%,#38bdf8 14%,#22c55e 36%,#f59e0b 68%,#ef4444 100%);box-shadow:inset 0 1px 2px rgba(0,0,0,.18)}
.temperature-thermometer-marker{position:absolute;top:50%;left:37.5%;transform:translate(-50%,-50%);width:14px;height:14px;border-radius:50%;background:#fff;border:2px solid #111827;box-shadow:0 0 0 3px rgba(255,255,255,.18),0 4px 10px rgba(0,0,0,.28);pointer-events:none}
.temperature-thermometer-marker-label{position:absolute;bottom:22px;left:50%;transform:translateX(-50%);white-space:nowrap;font-size:.8rem;font-weight:700;padding:4px 8px;border-radius:999px;background:rgba(15,23,42,.92);color:#fff;border:1px solid rgba(255,255,255,.08);box-shadow:0 4px 12px rgba(0,0,0,.2)}
.temperature-thermometer-ticks{position:relative;height:14px;margin-top:8px}
.temperature-thermometer-ticks .tick{position:absolute;top:0;transform:translateX(-50%);font-size:.7rem;opacity:.75;white-space:nowrap}
.temperature-thermometer-ticks .tick::before{content:"";position:absolute;top:-9px;left:50%;transform:translateX(-50%);width:1px;height:7px;background:rgba(255,255,255,.35)}
.temperature-thermometer-labels{position:relative;display:block;min-height:56px;margin-top:6px}
.temperature-thermometer-labels span{position:absolute;top:0;transform:translateX(-50%);font-size:.78rem;line-height:1.25;color:var(--text-muted, var(--muted-text, #6b7280));white-space:nowrap;text-align:center}
.temperature-thermometer-context,.temperature-thermometer-seo-note{margin:12px 0 0;font-size:.95rem;line-height:1.5}
.temperature-thermometer-context{font-weight:500}
.temperature-thermometer-seo-note{margin-top:8px;font-size:.85rem;color:var(--text-muted, var(--muted-text, #6b7280))}
@media (max-width:768px){.temperature-thermometer-card{padding:16px}.temperature-thermometer-marker-label{font-size:.72rem;bottom:20px;padding:3px 7px}.temperature-thermometer-ticks .tick{font-size:.64rem}.temperature-thermometer-labels{display:grid;grid-template-columns:1fr 1fr;gap:8px 12px;min-height:auto;margin-top:10px}.temperature-thermometer-labels span{position:static;transform:none;white-space:normal;text-align:left;font-size:.76rem}}
@media (max-width:480px){.temperature-thermometer-title{font-size:1rem}.temperature-thermometer-subtitle,.temperature-thermometer-context{font-size:.9rem}}


/* V1.4.1 expansion layout compatibility patch */
.main-content .wrap{width:100%;max-width:none;margin:0;}
.main-content .hero,
.main-content .section,
.main-content .info-card,
.main-content .content-card{
  background: var(--card-bg);
  padding: 32px;
  border-radius: 16px;
  border: 1px solid var(--border-color);
  box-shadow: 0 10px 15px -3px rgba(0,0,0,.12);
  margin-bottom: 28px;
}
.main-content .hero h1,
.main-content .section h2,
.main-content .info-card h2,
.main-content .content-card h2{margin-top:0;}
.main-content .kicker{
  display:block;
  margin-bottom:10px;
  font-size:.78rem;
  font-weight:700;
  letter-spacing:.08em;
  text-transform:uppercase;
  color:var(--accent-color);
}
.main-content .lead,
.main-content .hero p{
  font-size:1.08rem;
  color:var(--text-muted);
  max-width:760px;
}
.main-content .converter-shell{display:block;}
.main-content .converter-box,
.main-content .calculator-grid,
.main-content .grid-two{
  display:grid;
  grid-template-columns: 1fr auto 1fr;
  gap:24px;
  align-items:end;
}
.main-content .form-grid{
  display:grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap:18px;
  align-items:end;
}
.main-content .calculator-grid.single,
.main-content .grid-two.single,
.main-content .form-grid.single{grid-template-columns:1fr;}
.main-content .converter-box > div:not(.swap),
.main-content .calculator-grid > div,
.main-content .grid-two > div,
.main-content .form-grid > div{
  display:flex;
  flex-direction:column;
}
.main-content .converter-box label,
.main-content .calculator-grid label,
.main-content .grid-two label,
.main-content .form-grid label{
  margin-bottom:10px;
  font-size:.875rem;
  font-weight:600;
  color:var(--text-muted);
}
.main-content .converter-box input,
.main-content .converter-box select,
.main-content .calculator-grid input,
.main-content .calculator-grid select,
.main-content .grid-two input,
.main-content .grid-two select,
.main-content .form-grid input,
.main-content .form-grid select,
.main-content .form-grid textarea{
  width:100%;
  padding:18px 20px;
  font-size:1.125rem;
  font-weight:600;
  color:var(--text-color);
  border-radius:12px;
  border:1px solid var(--border-color);
  background:var(--input-bg);
  box-sizing:border-box;
}
.main-content .swap{
  align-self:center;
  justify-self:center;
  font-size:1.4rem;
  font-weight:700;
  color:var(--text-muted);
  padding:0 6px;
}
.main-content .result-line,
.main-content .callout,
.main-content .meta-line,
.main-content .result-box,
.main-content .result-card,
.main-content .helper-text,
.main-content .note-box,
.main-content .notice-box{
  margin-top:16px;
  padding:14px 16px;
  border-radius:12px;
  border:1px solid var(--border-color);
  background: rgba(15,23,42,.55);
  color: var(--text-muted);
}
.main-content .table-wrap{overflow:auto;}
.main-content .table-wrap table,
.main-content table{
  width:100%;
  border-collapse:collapse;
  margin:20px 0;
  border-radius:12px;
  overflow:hidden;
  border:1px solid var(--border-color);
}
.main-content th{
  background: var(--sidebar-bg);
  padding:16px;
  text-align:left;
  font-weight:700;
  color: var(--accent-color);
}
.main-content td{
  padding:14px 16px;
  border-top:1px solid var(--border-color);
}
.main-content .quick-links,
.main-content .chip-group,
.main-content .related-links{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px;}
.main-content .chip,
.main-content .pill-link,
.main-content .quick-link{
  display:inline-flex;
  align-items:center;
  gap:6px;
  text-decoration:none;
  padding:10px 14px;
  border-radius:999px;
  background:var(--input-bg);
  border:1px solid var(--border-color);
  color:var(--text-color);
}
.main-content .compact-points,
.main-content .content-list{padding-left:20px;}
.main-content .compact-points li,
.main-content .content-list li{margin-bottom:8px;}
.main-content .hero-section{margin-bottom:32px;}
.main-content .hero-section h1{font-size:2.45rem;font-weight:800;margin-bottom:12px;letter-spacing:-0.025em;}
.main-content .hero-section p{font-size:1.08rem;color:var(--text-muted);max-width:760px;}
.main-content .section.tool{padding-bottom:24px;}
@media (max-width: 900px){
  .main-content .converter-box,
  .main-content .calculator-grid,
  .main-content .grid-two,
  .main-content .form-grid{grid-template-columns:1fr;}
  .main-content .swap{justify-self:start;padding:8px 0;}
}


/* V1.4.2.1 hotfix: generic converter layout */
.converter-shell{
  display:flex;
  flex-direction:column;
}
.converter-shell .result-line{
  order:-1;
  margin-top:0;
  margin-bottom:16px;
}
.converter-shell .swap{
  cursor:pointer;
  user-select:none;
}
.converter-shell .swap:focus{
  outline:2px solid var(--accent-color);
  outline-offset:4px;
  border-radius:8px;
}


/* V1.4.2.2 area branch + linear converter fix */
.converter-shell{
  display:flex;
  flex-direction:column;
}
.converter-shell .result-line{
  order:-1;
  margin-top:0;
  margin-bottom:16px;
}
.converter-shell .swap{
  cursor:pointer;
  user-select:none;
}
.converter-shell .swap,
.converter-shell .operator-sign{
  display:flex;
  align-items:center;
  justify-content:center;
  min-width:48px;
  font-size:1.5rem;
  line-height:1;
  color:var(--text-muted);
}
.converter-shell .swap:focus{
  outline:2px solid var(--accent-color);
  outline-offset:4px;
  border-radius:8px;
}


/* V1.4.2.3 area UI fix */
.converter-shell{
  display:flex;
  flex-direction:column;
}
.converter-shell .result-line{
  order:2;
  margin-top:16px;
  margin-bottom:16px;
}
.converter-shell .meta-line{
  order:3;
}
.quick-values{
  display:flex;
  flex-wrap:wrap;
  gap:8px;
  margin-top:10px;
}
.quick-btn{
  appearance:none;
  border:1px solid var(--border-color, rgba(255,255,255,.14));
  background:var(--card-bg, rgba(255,255,255,.06));
  color:var(--text-color, #fff);
  border-radius:999px;
  padding:6px 12px;
  font:inherit;
  cursor:pointer;
}
.quick-btn:hover{
  border-color:var(--accent-color);
}
.converter-shell .swap{
  cursor:pointer;
  user-select:none;
  font-size:1.5rem;
  line-height:1;
}
.converter-shell .operator-sign{
  display:flex;
  align-items:center;
  justify-content:center;
  min-width:48px;
  font-size:1.5rem;
  line-height:1;
  color:var(--text-muted);
}