*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{
  --blue:#2563eb;--blue-dark:#1d4ed8;--blue-light:#eff6ff;
  --gray:#6b7280;--gray-light:#f3f4f6;--gray-border:#e5e7eb;
  --text:#111827;--text-muted:#6b7280;
  --green:#059669;--radius:10px;--shadow:0 1px 3px rgba(0,0,0,.1);
  --shadow-md:0 4px 16px rgba(0,0,0,.08);
}
html{font-size:16px;scroll-behavior:smooth}
body{font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,sans-serif;color:var(--text);background:#fff;line-height:1.6}
a{color:var(--blue);text-decoration:none}
a:hover{text-decoration:underline}
img{max-width:100%}

/* Layout */
.container{max-width:900px;margin:0 auto;padding:0 16px}
.container-wide{max-width:1100px;margin:0 auto;padding:0 16px}

/* Nav */
nav{background:#fff;border-bottom:1px solid var(--gray-border);position:sticky;top:0;z-index:50}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:56px;gap:16px}
.nav-logo{font-weight:700;font-size:1.3rem;color:var(--blue);letter-spacing:-0.5px}
.nav-logo span{color:var(--text)}
.nav-links{display:flex;gap:20px;font-size:.9rem}
.nav-links a{color:var(--text-muted);transition:color .15s}
.nav-links a:hover{color:var(--blue);text-decoration:none}
.nav-search{flex:1;max-width:280px}
.nav-search input{width:100%;padding:7px 12px;border:1px solid var(--gray-border);border-radius:6px;font-size:.9rem;outline:none}
.nav-search input:focus{border-color:var(--blue)}

/* Hero */
.hero{background:linear-gradient(135deg,#1e40af 0%,#3b82f6 60%,#60a5fa 100%);color:#fff;padding:60px 16px 50px;text-align:center}
.hero h1{font-size:2.2rem;font-weight:800;line-height:1.2;margin-bottom:12px;letter-spacing:-0.5px}
.hero p{font-size:1.1rem;opacity:.9;margin-bottom:28px;max-width:560px;margin-left:auto;margin-right:auto}
.hero-search{display:flex;max-width:520px;margin:0 auto;gap:0}
.hero-search input{flex:1;padding:14px 18px;font-size:1rem;border:none;border-radius:8px 0 0 8px;outline:none}
.hero-search button{padding:14px 24px;background:var(--green);color:#fff;border:none;font-size:1rem;font-weight:600;border-radius:0 8px 8px 0;cursor:pointer;transition:background .15s}
.hero-search button:hover{background:#047857}

/* Section titles */
.section{padding:36px 0 24px}
.section-title{font-size:1.3rem;font-weight:700;margin-bottom:18px;color:var(--text)}
.section-title span{color:var(--blue)}

/* Cards grid */
.grid{display:grid;gap:12px}
.grid-2{grid-template-columns:repeat(2,1fr)}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-4{grid-template-columns:repeat(4,1fr)}

.tool-card{background:#fff;border:1px solid var(--gray-border);border-radius:var(--radius);padding:14px 16px;transition:box-shadow .15s,border-color .15s;display:block;cursor:pointer}
.tool-card:hover{border-color:var(--blue);box-shadow:var(--shadow-md);text-decoration:none}
.tool-card h3{font-size:.95rem;font-weight:600;color:var(--text);margin-bottom:4px}
.tool-card p{font-size:.82rem;color:var(--text-muted)}
.tool-card .badge{display:inline-block;font-size:.7rem;font-weight:600;padding:2px 8px;border-radius:20px;margin-bottom:6px}
.badge-word{background:#ede9fe;color:#6d28d9}
.badge-calc{background:#fef3c7;color:#b45309}
.badge-conv{background:#dcfce7;color:#166534}

/* Category sections */
.cat-section{background:var(--gray-light);border-radius:var(--radius);padding:20px;margin-bottom:20px}
.cat-section h2{font-size:1.1rem;font-weight:700;margin-bottom:14px;display:flex;align-items:center;gap:8px}
.cat-icon{font-size:1.2rem}

/* Trust bar */
.trust-bar{background:var(--blue-light);padding:20px 0;text-align:center}
.trust-items{display:flex;justify-content:center;gap:40px;flex-wrap:wrap}
.trust-item{display:flex;align-items:center;gap:8px;font-size:.9rem;font-weight:600;color:#1e40af}

/* Tool page */
.tool-header{padding:28px 0 20px;border-bottom:1px solid var(--gray-border)}
.tool-header h1{font-size:1.9rem;font-weight:800;margin-bottom:6px;letter-spacing:-0.3px}
.tool-header p{color:var(--text-muted);font-size:.95rem}

.tool-input-box{background:var(--blue-light);border:1px solid #bfdbfe;border-radius:var(--radius);padding:28px;margin:24px 0;text-align:center}
.tool-input-box h2{font-size:1.1rem;font-weight:600;margin-bottom:16px;color:#1e40af}
.input-row{display:flex;gap:10px;justify-content:center;flex-wrap:wrap;max-width:520px;margin:0 auto}
.input-row input{flex:1;min-width:140px;padding:13px 16px;border:2px solid #93c5fd;border-radius:8px;font-size:1rem;outline:none;background:#fff;transition:border .15s}
.input-row input:focus{border-color:var(--blue)}
.btn-primary{padding:13px 28px;background:var(--blue);color:#fff;border:none;border-radius:8px;font-size:1rem;font-weight:600;cursor:pointer;transition:background .15s;white-space:nowrap}
.btn-primary:hover{background:var(--blue-dark)}
.btn-secondary{padding:10px 20px;background:#fff;color:var(--blue);border:2px solid var(--blue);border-radius:8px;font-size:.9rem;font-weight:600;cursor:pointer;transition:all .15s}
.btn-secondary:hover{background:var(--blue-light)}
.btn-green{padding:10px 20px;background:var(--green);color:#fff;border:none;border-radius:8px;font-size:.9rem;font-weight:600;cursor:pointer}
.btn-green:hover{background:#047857}
.calc-inputs{display:grid;gap:12px;max-width:480px;margin:0 auto}
.calc-input-group{display:flex;flex-direction:column;text-align:left}
.calc-input-group label{font-size:.85rem;font-weight:600;color:#1e40af;margin-bottom:5px}
.calc-input-group input{padding:12px 14px;border:2px solid #93c5fd;border-radius:8px;font-size:1rem;outline:none;background:#fff}
.calc-input-group input:focus{border-color:var(--blue)}

/* Ad placeholders */
.ad-placeholder{background:repeating-linear-gradient(45deg,#f9fafb,#f9fafb 5px,#f3f4f6 5px,#f3f4f6 10px);border:1px dashed #d1d5db;border-radius:8px;padding:24px;text-align:center;color:var(--text-muted);font-size:.8rem;margin:20px 0}
.ad-placeholder span{display:block;font-weight:600;font-size:.75rem;text-transform:uppercase;letter-spacing:1px;color:#9ca3af}

/* Results */
.results-section{margin:20px 0}
.results-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px;flex-wrap:wrap;gap:8px}
.results-count{font-size:.9rem;color:var(--text-muted);font-weight:500}
.word-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(100px,1fr));gap:8px;margin-bottom:16px}
.word-chip{background:#fff;border:1px solid var(--gray-border);border-radius:6px;padding:8px 10px;font-size:.9rem;font-weight:600;text-align:center;font-family:monospace;cursor:pointer;transition:all .15s;user-select:none}
.word-chip:hover{background:var(--blue);color:#fff;border-color:var(--blue)}
.word-chip.copied{background:var(--green);color:#fff;border-color:var(--green)}

.calc-results{display:grid;gap:10px}
.calc-result-row{background:#fff;border:1px solid var(--gray-border);border-radius:8px;padding:14px 18px;display:flex;justify-content:space-between;align-items:center;gap:12px}
.calc-result-row:first-child{background:var(--blue-light);border-color:#93c5fd}
.calc-result-label{font-size:.9rem;color:var(--text-muted)}
.calc-result-value{font-size:1.2rem;font-weight:700;color:var(--text)}
.calc-result-row:first-child .calc-result-value{color:var(--blue);font-size:1.4rem}
.copy-btn{background:none;border:1px solid var(--gray-border);padding:4px 10px;border-radius:5px;font-size:.75rem;cursor:pointer;color:var(--text-muted);transition:all .15s}
.copy-btn:hover{border-color:var(--blue);color:var(--blue)}

.conv-result{background:var(--blue-light);border:1px solid #93c5fd;border-radius:var(--radius);padding:24px;text-align:center;margin:16px 0}
.conv-main{font-size:2rem;font-weight:800;color:var(--blue);margin-bottom:4px}
.conv-sub{font-size:1rem;color:var(--text-muted);margin-bottom:16px}
.conv-reverse{font-size:.95rem;color:var(--text-muted);background:#fff;border-radius:8px;padding:10px 16px;display:inline-block}

/* Internal links */
.inline-links{margin:20px 0;padding:16px;background:var(--gray-light);border-radius:var(--radius)}
.inline-links h3{font-size:.9rem;font-weight:700;margin-bottom:10px;color:var(--text-muted);text-transform:uppercase;letter-spacing:.5px}
.inline-links a{display:inline-block;margin:4px;padding:5px 12px;background:#fff;border:1px solid var(--gray-border);border-radius:20px;font-size:.85rem;color:var(--text);transition:all .15s}
.inline-links a:hover{border-color:var(--blue);color:var(--blue);text-decoration:none}

/* SEO content */
.seo-content{background:var(--gray-light);border-radius:var(--radius);padding:20px;margin:20px 0;font-size:.9rem;color:var(--text-muted);line-height:1.8}
.seo-content h2{font-size:1.1rem;font-weight:700;color:var(--text);margin-bottom:10px}

/* Related tools grid */
.related-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(180px,1fr));gap:10px;margin:16px 0}
.related-card{background:#fff;border:1px solid var(--gray-border);border-radius:8px;padding:12px 14px;display:block;transition:all .15s}
.related-card:hover{border-color:var(--blue);box-shadow:var(--shadow);text-decoration:none}
.related-card strong{display:block;font-size:.9rem;font-weight:600;color:var(--text);margin-bottom:3px}
.related-card span{font-size:.78rem;color:var(--text-muted)}

/* Footer */
footer{background:var(--text);color:#9ca3af;padding:32px 0;margin-top:48px;font-size:.85rem}
.footer-inner{display:flex;justify-content:space-between;align-items:flex-start;gap:24px;flex-wrap:wrap}
.footer-brand{color:#fff;font-weight:700;font-size:1.1rem;margin-bottom:6px}
.footer-links{display:flex;gap:16px;flex-wrap:wrap}
.footer-links a{color:#9ca3af;transition:color .15s}
.footer-links a:hover{color:#fff;text-decoration:none}
.footer-copy{color:#6b7280;margin-top:4px;font-size:.8rem}

/* 404 */
.not-found{text-align:center;padding:80px 16px}
.not-found h1{font-size:5rem;font-weight:900;color:var(--blue);line-height:1}
.not-found h2{font-size:1.5rem;font-weight:700;margin:12px 0 8px}
.not-found p{color:var(--text-muted);margin-bottom:24px}

/* Breadcrumb */
.breadcrumb{font-size:.82rem;color:var(--text-muted);padding:10px 0 0}
.breadcrumb a{color:var(--text-muted)}
.breadcrumb a:hover{color:var(--blue)}

/* Responsive */
@media(max-width:700px){
  .hero h1{font-size:1.55rem}
  .grid-4{grid-template-columns:repeat(2,1fr)}
  .grid-3{grid-template-columns:repeat(2,1fr)}
  .grid-2{grid-template-columns:1fr}
  .trust-items{gap:20px}
  .nav-links{display:none}
  .nav-search{max-width:200px}
  .calc-result-row{flex-direction:column;align-items:flex-start;gap:6px}
  .calc-result-value{font-size:1.1rem}
  .word-grid{grid-template-columns:repeat(auto-fill,minmax(80px,1fr))}
  .conv-main{font-size:1.5rem}
  .footer-inner{flex-direction:column}
  .tool-header h1{font-size:1.4rem}
  .input-row{flex-direction:column}
  .input-row input{min-width:unset}
}
@media(max-width:400px){
  .hero h1{font-size:1.35rem}
  .grid-4{grid-template-columns:1fr}
  .grid-3{grid-template-columns:1fr}
}

/* Helpers */
.mt-12{margin-top:12px}
.mt-16{margin-top:16px}
.mt-24{margin-top:24px}
.text-center{text-align:center}
.flex{display:flex}
.gap-8{gap:8px}
.items-center{align-items:center}
.justify-between{justify-content:space-between}
.flex-wrap{flex-wrap:wrap}

/* ─── Ad units (adOptimizer-managed) ─────────────────────────────────────── */
.ad-unit{margin:22px 0;text-align:center;position:relative}
/* Placeholder state while AdSense script loads or in dev */
.ad-unit ins.adsbygoogle{
  display:block!important;
  min-height:90px;
  background:#f9fafb;
  border:1px dashed var(--gray-border);
  border-radius:8px;
}
/* Priority badge colours (visible via DevTools, not shown to users) */
.ad-unit[data-priority="96"],.ad-unit[data-priority="92"],.ad-unit[data-priority="85"]
  {outline:2px solid transparent} /* highest-priority slots */
.ad-label{
  display:block;
  font-size:.65rem;
  color:#c0c0c8;
  text-transform:uppercase;
  letter-spacing:.07em;
  margin-top:3px;
}
/* Desktop-only sidebar ads hidden by default */
.ad-desktop-only{display:none}
@media(min-width:1024px){.ad-desktop-only{display:block}}
/* Leaderboard format: full-width, taller min-height */
.ad-unit[data-format="leaderboard"] ins.adsbygoogle,
.ad-unit[data-format="large_rectangle"] ins.adsbygoogle{min-height:100px}
/* Half-page and skyscraper */
.ad-unit[data-format="half_page"] ins.adsbygoogle,
.ad-unit[data-format="skyscraper"] ins.adsbygoogle{min-height:250px}
/* Native / fluid */
.ad-unit[data-format="native"] ins.adsbygoogle{min-height:80px;background:transparent;border:none}
/* Legacy static placeholder (fallback, kept for safety) */
.ad-placeholder{background:#f8f9fa;border:1px dashed #d1d5db;border-radius:8px;padding:18px;text-align:center;font-size:.8rem;color:#9ca3af;margin:20px 0}
.ad-placeholder span{display:block;font-size:.65rem;text-transform:uppercase;letter-spacing:.08em;margin-bottom:4px}