/* ============ Muexe — Global Styles ============ */
:root {
  --primary: #2563eb;
  --primary-dark: #1d4ed8;
  --primary-soft: #eff6ff;
  --accent: #7c3aed;
  --grad: linear-gradient(135deg, #2563eb 0%, #7c3aed 100%);
  --text: #0f172a;
  --text-soft: #475569;
  --muted: #64748b;
  --border: #e2e8f0;
  --bg: #ffffff;
  --bg-soft: #f8fafc;
  --radius: 14px;
  --radius-lg: 18px;
  --shadow-sm: 0 1px 2px rgba(15,23,42,.05);
  --shadow: 0 6px 20px rgba(15,23,42,.08);
  --shadow-lg: 0 16px 40px rgba(15,23,42,.13);
  --maxw: 1140px;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", sans-serif;
}

/* Category accent colors */
:root {
  --c-converters: #2563eb;
  --c-converters-soft: #eff6ff;
  --c-image: #7c3aed;
  --c-image-soft: #f5f3ff;
  --c-calculators: #059669;
  --c-calculators-soft: #ecfdf5;
  --c-text: #d97706;
  --c-text-soft: #fffbeb;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  color: var(--text);
  background: var(--bg);
  line-height: 1.65;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

.container { max-width: var(--maxw); margin: 0 auto; padding: 0 22px; }

a { color: var(--primary); text-decoration: none; transition: color .15s; }
a:hover { color: var(--primary-dark); }

h1, h2, h3, h4 { line-height: 1.22; font-weight: 800; color: var(--text); letter-spacing: -.02em; }
h1 { font-size: 2.1rem; }
h2 { font-size: 1.5rem; }
h3 { font-size: 1.08rem; }

/* ============ Header ============ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255,255,255,.85);
  backdrop-filter: blur(14px) saturate(180%);
  -webkit-backdrop-filter: blur(14px) saturate(180%);
  border-bottom: 1px solid var(--border);
}
.header-inner {
  display: flex;
  align-items: center;
  gap: 18px;
  height: 66px;
}
.brand { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
.brand-logo { display: inline-flex; filter: drop-shadow(0 2px 6px rgba(37,99,235,.35)); }
.brand-text { display: flex; flex-direction: column; line-height: 1.1; }
.brand-name {
  font-size: 1.32rem;
  font-weight: 800;
  color: var(--text);
  letter-spacing: -.02em;
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.brand-tagline { font-size: .66rem; color: var(--muted); font-weight: 600; letter-spacing: .02em; text-transform: uppercase; }

.search-box { position: relative; flex: 1; max-width: 360px; margin-left: auto; }
.search-box .search-icon {
  position: absolute; left: 13px; top: 50%; transform: translateY(-50%);
  color: var(--muted); pointer-events: none;
}
.search-box input {
  width: 100%;
  height: 42px;
  padding: 0 14px 0 38px;
  border: 1px solid var(--border);
  border-radius: 21px;
  background: var(--bg-soft);
  font-size: .92rem;
  transition: border .18s, box-shadow .18s, background .18s;
}
.search-box input:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 4px var(--primary-soft);
  background: #fff;
}
.search-results {
  position: absolute;
  top: 50px; left: 0; right: 0;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 14px;
  box-shadow: var(--shadow-lg);
  max-height: 340px;
  overflow-y: auto;
  display: none;
  z-index: 200;
}
.search-results.show { display: block; }
.search-results a {
  display: flex; align-items: center; gap: 10px;
  padding: 11px 15px;
  color: var(--text);
  font-size: .9rem;
  border-bottom: 1px solid var(--bg-soft);
  transition: background .12s;
}
.search-results a:last-child { border-bottom: none; }
.search-results a:hover { background: var(--primary-soft); color: var(--primary-dark); }
.search-results .sr-cat { font-size: .7rem; color: var(--muted); }
.search-results .sr-empty { padding: 12px 15px; color: var(--muted); font-size: .88rem; }

.main-nav { display: flex; align-items: center; gap: 2px; }
.main-nav > a {
  padding: 8px 13px;
  color: var(--text-soft);
  font-size: .92rem;
  font-weight: 600;
  border-radius: 9px;
  white-space: nowrap;
}
.main-nav > a:hover { color: var(--primary); background: var(--primary-soft); }
.has-dropdown { position: relative; }
.dropdown-toggle { cursor: pointer; }
.dropdown-menu {
  position: absolute;
  top: calc(100% + 6px); left: 0;
  min-width: 220px;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 12px;
  box-shadow: var(--shadow-lg);
  padding: 6px;
  display: none;
  z-index: 300;
}
.has-dropdown:hover .dropdown-menu,
.has-dropdown:focus-within .dropdown-menu { display: block; }
.dropdown-menu a {
  display: block;
  padding: 9px 13px;
  color: var(--text-soft);
  font-size: .88rem;
  border-radius: 8px;
  transition: background .12s, color .12s;
}
.dropdown-menu a:hover { background: var(--primary-soft); color: var(--primary-dark); }

.nav-toggle { display: none; background: none; border: none; cursor: pointer; padding: 8px; }
.nav-toggle span { display: block; width: 22px; height: 2px; background: var(--text); margin: 4px 0; border-radius: 2px; transition: .2s; }

/* ============ Hero (home) ============ */
.hero {
  position: relative;
  overflow: hidden;
  padding: 68px 0 56px;
  text-align: center;
  background:
    radial-gradient(900px 420px at 15% -10%, rgba(37,99,235,.12), transparent 60%),
    radial-gradient(800px 400px at 85% 0%, rgba(124,58,237,.12), transparent 55%),
    linear-gradient(180deg, #fbfcff 0%, #ffffff 100%);
  border-bottom: 1px solid var(--border);
}
.hero-inner { position: relative; z-index: 1; }
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 6px 14px;
  margin-bottom: 18px;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 999px;
  font-size: .8rem;
  font-weight: 600;
  color: var(--text-soft);
  box-shadow: var(--shadow-sm);
}
.hero-badge .dot { width: 7px; height: 7px; border-radius: 50%; background: #22c55e; }
.hero h1 {
  font-size: 3rem;
  margin-bottom: 16px;
  letter-spacing: -.03em;
  line-height: 1.1;
}
.hero h1 .grad {
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.hero p.sub {
  color: var(--text-soft);
  font-size: 1.16rem;
  max-width: 620px;
  margin: 0 auto 28px;
}
.hero-cats {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: center;
}
.hero-cats a {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 9px 17px;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 999px;
  font-size: .9rem;
  font-weight: 600;
  color: var(--text-soft);
  box-shadow: var(--shadow-sm);
  transition: all .18s;
}
.hero-cats a:hover {
  transform: translateY(-2px);
  border-color: var(--primary);
  color: var(--primary);
  box-shadow: var(--shadow);
}

/* ============ Tool cards ============ */
.section-title {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.32rem;
  margin: 44px 0 20px;
}
.section-title::before {
  content: "";
  width: 5px;
  height: 22px;
  border-radius: 3px;
  background: var(--grad);
}
.tools-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: 18px;
}
.tool-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 22px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  transition: transform .2s, box-shadow .2s, border-color .2s;
}
.tool-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: #c7d7f7;
}
.tool-card .tc-icon {
  width: 48px; height: 48px;
  border-radius: 13px;
  background: var(--primary-soft);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.5rem;
  margin-bottom: 6px;
  transition: transform .2s;
}
.tool-card:hover .tc-icon { transform: scale(1.08); }
.tool-card h3 { font-size: 1.04rem; }
.tool-card h3 a { color: var(--text); }
.tool-card h3 a:hover { color: var(--primary); }
.tool-card p { font-size: .86rem; color: var(--muted); flex: 1; }

/* Category-tinted icon backgrounds */
.tool-card.cat-converters .tc-icon { background: var(--c-converters-soft); }
.tool-card.cat-image .tc-icon { background: var(--c-image-soft); }
.tool-card.cat-calculators .tc-icon { background: var(--c-calculators-soft); }
.tool-card.cat-text .tc-icon { background: var(--c-text-soft); }
.tool-card.cat-converters:hover { border-color: #bfd3fb; }
.tool-card.cat-image:hover { border-color: #d8ccfb; }
.tool-card.cat-calculators:hover { border-color: #a7e3cf; }
.tool-card.cat-text:hover { border-color: #f6dcb0; }

/* ============ Tool page ============ */
.breadcrumb { padding: 18px 0 0; font-size: .82rem; color: var(--muted); }
.breadcrumb a { color: var(--muted); }
.breadcrumb a:hover { color: var(--primary); }
.breadcrumb .sep { margin: 0 7px; color: #cbd5e1; }

.tool-main { padding: 26px 0 52px; }
.tool-head { margin-bottom: 20px; }
.tool-head h1 { margin-bottom: 10px; }
.tool-head .lead { color: var(--text-soft); font-size: 1.06rem; max-width: 760px; }

.tool-widget {
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 26px;
  margin: 22px 0 30px;
  box-shadow: var(--shadow-sm);
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 11px 22px;
  background: var(--primary);
  color: #fff;
  border: none;
  border-radius: 10px;
  font-size: .95rem;
  font-weight: 600;
  cursor: pointer;
  transition: background .18s, transform .12s, box-shadow .18s;
  box-shadow: 0 2px 8px rgba(37,99,235,.28);
}
.btn:hover { background: var(--primary-dark); color: #fff; transform: translateY(-1px); box-shadow: 0 4px 14px rgba(37,99,235,.34); }
.btn:active { transform: translateY(0); }
.btn-secondary {
  background: #fff;
  color: var(--text);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
}
.btn-secondary:hover { background: var(--bg-soft); color: var(--text); box-shadow: var(--shadow); }

input[type="text"], input[type="number"], input[type="file"], textarea, select {
  width: 100%;
  padding: 11px 14px;
  border: 1px solid var(--border);
  border-radius: 10px;
  font-size: .95rem;
  font-family: var(--font);
  background: #fff;
  transition: border .15s, box-shadow .15s;
}
input:focus, textarea:focus, select:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 4px var(--primary-soft);
}
textarea { resize: vertical; min-height: 140px; }
label { font-weight: 600; font-size: .9rem; display: block; margin-bottom: 6px; }
.form-row { margin-bottom: 16px; }
.result-box {
  margin-top: 14px;
  padding: 16px;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 11px;
  word-break: break-all;
  font-size: .95rem;
}
.note { font-size: .82rem; color: var(--muted); margin-top: 8px; }

/* Prose content */
.prose { max-width: 760px; }
.prose h2 { margin: 28px 0 12px; }
.prose p, .prose li { color: var(--text-soft); font-size: .98rem; }
.prose ul, .prose ol { padding-left: 22px; margin: 10px 0; }
.prose li { margin: 6px 0; }

/* FAQ */
.faq { margin-top: 34px; }
.faq h2 { margin-bottom: 16px; }
.faq details {
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: 11px;
  padding: 15px 20px;
  margin-bottom: 10px;
  transition: border-color .15s;
}
.faq details[open] { border-color: #c7d7f7; }
.faq summary {
  cursor: pointer;
  font-weight: 600;
  font-size: .98rem;
  list-style: none;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; float: right; font-weight: 700; color: var(--primary); font-size: 1.1rem; line-height: 1; }
.faq details[open] summary::after { content: "–"; }
.faq details p { margin-top: 10px; color: var(--text-soft); font-size: .92rem; }

/* Ad slots */
.ad-slot {
  margin: 28px 0;
  border: 1px dashed #cbd5e1;
  border-radius: 12px;
  background: #f8fafc;
  padding: 14px;
  text-align: center;
  color: #94a3b8;
  font-size: .72rem;
  letter-spacing: .05em;
  text-transform: uppercase;
}
.ad-slot .ad-label { display: block; margin-bottom: 6px; }

/* Social share row */
.share-row { display: flex; gap: 10px; flex-wrap: wrap; margin: 22px 0 6px; }
.share-btn { padding: 9px 17px; border-radius: 9px; font-size: .88rem; font-weight: 600; color: #fff; transition: opacity .15s, transform .12s; }
.share-btn:hover { opacity: .9; color: #fff; transform: translateY(-1px); }
.share-btn.fb { background: #1877f2; }
.share-btn.pin { background: #e60023; }
.share-btn.tw { background: #0f172a; }

/* ============ Footer ============ */
.site-footer { background: #0b1220; color: #cbd5e1; margin-top: 64px; }
.footer-inner {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 32px;
  padding: 52px 22px 36px;
}
.footer-col { display: flex; flex-direction: column; gap: 10px; }
.footer-col h3 { color: #fff; font-size: .85rem; margin-bottom: 6px; text-transform: uppercase; letter-spacing: .06em; }
.footer-col a { color: #94a3b8; font-size: .88rem; }
.footer-col a:hover { color: #fff; }
.footer-desc { font-size: .86rem; color: #64748b; margin-top: 8px; max-width: 300px; }
.footer-brand .brand-name { color: #fff; -webkit-text-fill-color: #fff; }
.footer-brand .brand-tagline { color: #64748b; }
.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  padding: 20px 22px;
  border-top: 1px solid #1e293b;
  font-size: .82rem;
  color: #64748b;
}
.footer-social { display: flex; gap: 12px; }
.footer-social a { color: #64748b; transition: color .15s; }
.footer-social a:hover { color: #fff; }

/* ============ Fade-in animation ============ */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(14px); }
  to { opacity: 1; transform: translateY(0); }
}
.hero-inner { animation: fadeUp .5s ease both; }
.tool-card { animation: fadeUp .45s ease both; }
.tools-grid .tool-card:nth-child(1) { animation-delay: .02s; }
.tools-grid .tool-card:nth-child(2) { animation-delay: .06s; }
.tools-grid .tool-card:nth-child(3) { animation-delay: .10s; }
.tools-grid .tool-card:nth-child(4) { animation-delay: .14s; }
.tools-grid .tool-card:nth-child(5) { animation-delay: .18s; }
.tools-grid .tool-card:nth-child(6) { animation-delay: .22s; }

/* ============ Responsive ============ */
@media (max-width: 860px) {
  .main-nav {
    position: absolute;
    top: 66px; left: 0; right: 0;
    flex-direction: column;
    align-items: stretch;
    background: #fff;
    border-bottom: 1px solid var(--border);
    box-shadow: var(--shadow-lg);
    padding: 12px 20px;
    display: none;
  }
  .main-nav.open { display: flex; }
  .main-nav > a { padding: 12px 8px; border-bottom: 1px solid var(--bg-soft); }
  .dropdown-menu { position: static; box-shadow: none; border: none; display: block; padding-left: 12px; }
  .has-dropdown:hover .dropdown-menu { display: block; }
  .nav-toggle { display: block; margin-left: auto; }
  .search-box { max-width: none; order: 3; flex-basis: 100%; margin-left: 0; }
  .header-inner { flex-wrap: wrap; height: auto; padding: 12px 22px; }
  .footer-inner { grid-template-columns: 1fr 1fr; }
  .hero h1 { font-size: 2.2rem; }
  .hero { padding: 48px 0 40px; }
}

@media (max-width: 520px) {
  .footer-inner { grid-template-columns: 1fr; }
  .tools-grid { grid-template-columns: 1fr; }
  .hero h1 { font-size: 1.85rem; }
  .hero p.sub { font-size: 1.02rem; }
}