/* ============================================================
   RATEFORGE — SHARED DESIGN SYSTEM
   Dark tech aesthetic · Plus Jakarta Sans · Blue/Green accents
   ============================================================ */

:root{
  --bg:#030712;
  --bg-soft:#0a0f1c;
  --card:#111827;
  --card-border:#1f2937;
  --card-border-hover:#2b374d;
  --accent:#3b82f6;
  --accent-2:#60a5fa;
  --accent-soft:rgba(59,130,246,0.14);
  --success:#10b981;
  --success-soft:rgba(16,185,129,0.14);
  --warn:#f59e0b;
  --warn-soft:rgba(245,158,11,0.14);
  --text:#f3f4f6;
  --muted:#9ca3af;
  --muted-2:#6b7280;
  --radius-lg:24px;
  --radius-md:16px;
  --radius-sm:10px;
  --font:'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --mono: 'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, monospace;
}

*{ box-sizing:border-box; }
html{ scroll-behavior:smooth; }

body{
  margin:0;
  background:var(--bg);
  background-image:
    radial-gradient(circle at 12% 0%, rgba(59,130,246,0.10), transparent 42%),
    radial-gradient(circle at 88% 10%, rgba(16,185,129,0.07), transparent 38%);
  background-attachment:fixed;
  color:var(--text);
  font-family:var(--font);
  -webkit-font-smoothing:antialiased;
  line-height:1.5;
  overflow-x:hidden;
}

a{ color:inherit; text-decoration:none; }
img,svg{ display:block; }
::selection{ background:var(--accent-soft); color:#fff; }

.wrap{
  max-width:1180px;
  margin:0 auto;
  padding:0 24px;
}

/* ---------- SKIP LINK ---------- */
.skip-link{
  position:absolute; left:-999px; top:0;
  background:var(--accent); color:#fff;
  padding:10px 16px; border-radius:8px; z-index:200;
}
.skip-link:focus{ left:16px; top:16px; }

/* ---------- HEADER / NAV ---------- */
header.site-header{
  position:sticky; top:0; z-index:100;
  backdrop-filter:blur(14px);
  background:rgba(3,7,18,0.78);
  border-bottom:1px solid var(--card-border);
}
.nav{
  display:flex; align-items:center; justify-content:space-between;
  padding:14px 0;
  position:relative;
}
.logo{
  display:flex; align-items:center; gap:10px;
  font-weight:800; font-size:16px; letter-spacing:-0.02em;
  z-index:110;
}
.logo-mark{
  width:34px; height:34px; border-radius:10px;
  background:linear-gradient(135deg, var(--accent), var(--success));
  display:flex; align-items:center; justify-content:center;
  font-size:15px; font-weight:800; color:#030712;
  flex-shrink:0;
}
.nav-links{
  display:flex; gap:6px; align-items:center;
  font-size:14px; color:var(--muted); font-weight:600;
}
.nav-links a{
  padding:9px 14px; border-radius:9px;
  transition:color .18s ease, background .18s ease;
}
.nav-links a:hover{ color:var(--text); background:rgba(255,255,255,0.04); }
.nav-links a.active{ color:var(--text); background:var(--accent-soft); }

.nav-toggle{
  display:none;
  width:44px; height:44px;
  border-radius:10px;
  background:var(--card);
  border:1px solid var(--card-border);
  align-items:center; justify-content:center;
  cursor:pointer;
  z-index:110;
}
.nav-toggle span, .nav-toggle span::before, .nav-toggle span::after{
  content:""; display:block; width:18px; height:2px; background:var(--text);
  transition:transform .2s ease, opacity .2s ease;
  position:relative;
}
.nav-toggle span::before{ position:absolute; top:-6px; }
.nav-toggle span::after{ position:absolute; top:6px; }
.nav-toggle.open span{ background:transparent; }
.nav-toggle.open span::before{ transform:translateY(6px) rotate(45deg); }
.nav-toggle.open span::after{ transform:translateY(-6px) rotate(-45deg); }

@media (max-width:860px){
  .nav-links{
    position:fixed; inset:0 0 0 auto;
    top:0; height:100vh; width:min(78vw,320px);
    background:var(--bg-soft);
    border-left:1px solid var(--card-border);
    flex-direction:column; align-items:stretch;
    padding:88px 20px 24px;
    gap:4px;
    transform:translateX(100%);
    transition:transform .28s ease;
  }
  .nav-links.open{ transform:translateX(0); }
  .nav-links a{ padding:14px 16px; font-size:16px; }
  .nav-toggle{ display:flex; }
}

/* ---------- BREADCRUMB ---------- */
.breadcrumb{
  font-size:13px; color:var(--muted-2); font-weight:500;
  padding:18px 0 0;
}
.breadcrumb a{ color:var(--muted); }
.breadcrumb a:hover{ color:var(--accent-2); }
.breadcrumb .sep{ margin:0 6px; color:var(--muted-2); }

/* ---------- HERO ---------- */
.hero{ padding:56px 0 36px; }
.hero.center{ text-align:center; }
.eyebrow{
  display:inline-flex; align-items:center; gap:8px;
  font-size:13px; font-weight:700; color:var(--accent-2);
  background:var(--accent-soft); border:1px solid rgba(59,130,246,0.3);
  padding:6px 14px; border-radius:999px; margin-bottom:20px;
}
.eyebrow .dot{ width:6px; height:6px; border-radius:50%; background:var(--success); animation:pulse 2s infinite; }
@keyframes pulse{ 0%,100%{opacity:1;} 50%{opacity:.25;} }

h1{
  font-size:clamp(2rem, 4.6vw, 3.25rem);
  font-weight:800; letter-spacing:-0.03em; line-height:1.08;
  margin:0 0 18px;
}
h1 .grad, .grad-text{
  background:linear-gradient(90deg, var(--accent), var(--success));
  -webkit-background-clip:text; background-clip:text; color:transparent;
}
.hero p.sub{ color:var(--muted); font-size:clamp(15px,2vw,18px); max-width:680px; }
.hero.center p.sub{ margin:0 auto; }

.hero-stats{
  display:flex; gap:28px; margin-top:32px; flex-wrap:wrap;
}
.hero.center .hero-stats{ justify-content:center; }
.hero-stat b{ font-size:1.4rem; font-weight:800; color:var(--text); display:block; }
.hero-stat span{ font-size:12.5px; color:var(--muted); font-weight:600; }

/* ---------- BUTTONS ---------- */
.btn{
  display:inline-flex; align-items:center; justify-content:center; gap:8px;
  min-height:48px; padding:0 22px;
  border-radius:12px; font-weight:700; font-size:14.5px;
  border:1px solid transparent; cursor:pointer;
  font-family:var(--font);
  transition:transform .15s ease, box-shadow .15s ease, background .15s ease, border-color .15s ease;
}
.btn:active{ transform:scale(0.97); }
.btn-primary{
  background:linear-gradient(135deg, var(--accent), #2563eb);
  color:#fff; box-shadow:0 8px 24px -8px rgba(59,130,246,0.6);
}
.btn-primary:hover{ box-shadow:0 10px 30px -6px rgba(59,130,246,0.75); }
.btn-ghost{
  background:transparent; border-color:var(--card-border); color:var(--text);
}
.btn-ghost:hover{ border-color:var(--card-border-hover); background:rgba(255,255,255,0.03); }

/* ---------- CARD GRID (homepage tool cards) ---------- */
.tool-grid{
  display:grid; grid-template-columns:repeat(3,1fr); gap:20px;
  margin:40px 0 64px;
}
@media (max-width:900px){ .tool-grid{ grid-template-columns:1fr; } }

.tool-card{
  background:var(--card); border:1px solid var(--card-border);
  border-radius:var(--radius-md); padding:26px;
  display:flex; flex-direction:column; gap:14px;
  transition:border-color .2s ease, transform .2s ease, box-shadow .2s ease;
  position:relative; overflow:hidden;
}
.tool-card:hover{
  border-color:var(--card-border-hover);
  transform:translateY(-4px);
  box-shadow:0 20px 40px -20px rgba(0,0,0,0.6);
}
.tool-card .icon{
  width:44px; height:44px; border-radius:12px;
  display:flex; align-items:center; justify-content:center;
  background:var(--accent-soft); color:var(--accent-2);
  font-size:20px; font-weight:800;
}
.tool-card h3{ font-size:1.15rem; font-weight:800; margin:0; letter-spacing:-0.01em; }
.tool-card p{ color:var(--muted); font-size:14px; margin:0; flex-grow:1; }
.tool-card .go{
  display:inline-flex; align-items:center; gap:6px;
  font-size:13.5px; font-weight:700; color:var(--accent-2);
}
.tool-card .go svg{ width:14px; height:14px; transition:transform .2s ease; }
.tool-card:hover .go svg{ transform:translateX(4px); }

/* ---------- CALCULATOR CARD ---------- */
.calc-shell{ margin:8px 0 60px; }
.calc-card{
  background:var(--card); border:1px solid var(--card-border);
  border-radius:var(--radius-lg); padding:32px;
  display:grid; grid-template-columns:1.15fr 0.85fr; gap:32px;
  position:relative; overflow:hidden;
}
.calc-card::before{
  content:""; position:absolute; inset:0;
  background:radial-gradient(600px circle at var(--mx,50%) var(--my,0%), rgba(59,130,246,0.08), transparent 60%);
  pointer-events:none;
}
@media (max-width:900px){ .calc-card{ grid-template-columns:1fr; padding:22px; border-radius:18px; } }

.field-group{ margin-bottom:20px; }
.field-row{ display:grid; grid-template-columns:1fr 1fr; gap:16px; }
@media (max-width:560px){ .field-row{ grid-template-columns:1fr; } }

label{
  display:block; font-size:13px; font-weight:700; color:var(--muted);
  margin-bottom:8px; letter-spacing:0.01em;
}
.input-shell{ position:relative; }
.input-shell .prefix{
  position:absolute; left:16px; top:50%; transform:translateY(-50%);
  color:var(--muted); font-weight:700; font-size:15px; pointer-events:none;
}
input[type="number"], select{
  width:100%; min-height:48px;
  background:#0b1220; border:1px solid var(--card-border); color:var(--text);
  font-family:var(--font); font-size:16px; font-weight:700;
  border-radius:12px; padding:12px 16px 12px 34px;
  transition:border-color .2s ease, box-shadow .2s ease;
  appearance:none; -webkit-appearance:none;
}
select{ padding-left:16px; cursor:pointer; }
input[type="number"]:focus, select:focus{
  outline:none; border-color:var(--accent); box-shadow:0 0 0 4px var(--accent-soft);
}
input[type="number"]::-webkit-outer-spin-button, input[type="number"]::-webkit-inner-spin-button{ -webkit-appearance:none; margin:0; }
select{
  background-image:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%239ca3af' stroke-width='2'><path d='M6 9l6 6 6-6'/></svg>");
  background-repeat:no-repeat; background-position:right 14px center;
}

.tier-note{ font-size:12px; color:var(--muted); margin-top:8px; }
.tier-note b{ color:var(--success); }

.section-title{
  font-size:12px; font-weight:800; text-transform:uppercase; letter-spacing:0.08em;
  color:var(--muted); margin:28px 0 14px;
}
.section-title:first-child{ margin-top:0; }

/* ---------- RESULTS PANEL ---------- */
.results{
  background:linear-gradient(180deg, #0c1424, #0a0f1c);
  border:1px solid var(--card-border); border-radius:18px; padding:26px;
  display:flex; flex-direction:column; gap:16px;
  align-self:start; position:sticky; top:96px;
}
@media (max-width:900px){ .results{ position:static; } }

.result-hero{
  text-align:center; padding:22px 12px; border-radius:14px;
  background:var(--success-soft); border:1px solid rgba(16,185,129,0.3);
}
.result-hero .label{ font-size:12px; font-weight:800; letter-spacing:0.06em; text-transform:uppercase; color:var(--success); }
.result-hero .value{ font-size:clamp(2rem, 5vw, 2.5rem); font-weight:800; letter-spacing:-0.02em; color:#d1fae5; margin-top:6px; }
.result-hero .value span{ font-size:0.5em; font-weight:700; color:var(--success); }

.result-row{
  display:flex; justify-content:space-between; align-items:center;
  padding:14px 16px; background:#0b1220; border:1px solid var(--card-border); border-radius:12px;
}
.result-row .rl-label{ font-size:13px; color:var(--muted); font-weight:600; }
.result-row .rl-value{ font-size:17px; font-weight:800; color:var(--text); }
.result-row .rl-value.blue{ color:var(--accent-2); }
.result-row .rl-value.warn{ color:var(--warn); }

.apr-chip{
  display:inline-flex; align-items:center; gap:6px;
  font-size:12px; font-weight:800; background:var(--accent-soft); color:var(--accent-2);
  padding:4px 10px; border-radius:999px; border:1px solid rgba(59,130,246,0.3);
}

.save-note{
  font-size:11.5px; color:var(--muted-2); text-align:center;
  display:flex; align-items:center; justify-content:center; gap:6px;
}
.save-note svg{ width:13px; height:13px; color:var(--success); flex-shrink:0; }

.disclaimer{
  font-size:11.5px; color:var(--muted); line-height:1.5;
  border-top:1px solid var(--card-border); padding-top:14px;
}

/* ---------- CROSS-LINK / RELATED TOOLS ---------- */
.related-tools{
  display:grid; grid-template-columns:repeat(3,1fr); gap:16px;
  margin:8px 0 56px;
}
@media (max-width:900px){ .related-tools{ grid-template-columns:1fr; } }
.related-card{
  background:var(--card); border:1px solid var(--card-border); border-radius:14px;
  padding:18px 20px; display:flex; align-items:center; gap:12px;
  transition:border-color .2s ease, transform .2s ease;
}
.related-card:hover{ border-color:var(--card-border-hover); transform:translateY(-2px); }
.related-card .rc-icon{
  width:36px; height:36px; border-radius:9px; flex-shrink:0;
  display:flex; align-items:center; justify-content:center;
  background:var(--accent-soft); color:var(--accent-2); font-weight:800; font-size:15px;
}
.related-card .rc-text b{ display:block; font-size:14px; font-weight:800; }
.related-card .rc-text span{ font-size:12.5px; color:var(--muted); }

/* ---------- ARTICLE ---------- */
article.guide{ padding:20px 0 72px; border-top:1px solid var(--card-border); }
article.guide h2{ font-size:clamp(1.4rem,3vw,2rem); font-weight:800; letter-spacing:-0.02em; margin:48px 0 16px; }
article.guide h2:first-of-type{ margin-top:36px; }
article.guide h3{ font-size:1.1rem; font-weight:800; margin:26px 0 10px; color:#e5e7eb; }
article.guide p{ color:var(--muted); font-size:15.5px; margin:0 0 16px; max-width:800px; }
article.guide ul{ color:var(--muted); font-size:15.5px; max-width:780px; padding-left:20px; margin:0 0 20px; }
article.guide li{ margin-bottom:8px; }
article.guide strong{ color:var(--text); }
.formula-box{
  font-family:var(--mono); color:#d1fae5; background:#0b1220; padding:14px 18px;
  border-radius:10px; border:1px solid var(--card-border); display:inline-block; font-size:14px;
}

.data-table{
  width:100%; max-width:820px; border-collapse:collapse; margin:20px 0 32px; font-size:14px;
  border-radius:12px; overflow:hidden; border:1px solid var(--card-border);
}
.data-table th, .data-table td{ padding:12px 16px; text-align:left; border-bottom:1px solid var(--card-border); }
.data-table th{ background:#0b1220; color:var(--muted); font-weight:800; font-size:12px; text-transform:uppercase; letter-spacing:0.05em; }
.data-table td{ color:var(--text); font-weight:600; }
.data-table tr:last-child td{ border-bottom:none; }

/* ---------- FAQ ---------- */
.faq-item{ border:1px solid var(--card-border); border-radius:14px; margin-bottom:12px; background:var(--card); overflow:hidden; }
.faq-q{
  width:100%; text-align:left; background:none; border:none; color:var(--text);
  font-family:var(--font); font-size:15.5px; font-weight:800; padding:18px 20px; cursor:pointer;
  display:flex; justify-content:space-between; align-items:center; gap:12px; min-height:48px;
}
.faq-q .chev{ flex-shrink:0; width:20px; height:20px; transition:transform .25s ease; color:var(--accent-2); }
.faq-item.open .faq-q .chev{ transform:rotate(180deg); }
.faq-a{ max-height:0; overflow:hidden; transition:max-height .3s ease; }
.faq-a p{ padding:0 20px 18px; margin:0; color:var(--muted); font-size:14.5px; }

/* ---------- CTA BAND ---------- */
.cta-band{
  margin:16px 0 64px; padding:40px 32px; border-radius:var(--radius-lg);
  background:linear-gradient(135deg, rgba(59,130,246,0.12), rgba(16,185,129,0.08));
  border:1px solid var(--card-border); text-align:center;
}
.cta-band h2{ margin:0 0 10px; font-size:1.6rem; }
.cta-band p{ color:var(--muted); max-width:520px; margin:0 auto 22px; }
.cta-row{ display:flex; gap:12px; justify-content:center; flex-wrap:wrap; }

/* ---------- FOOTER ---------- */
footer{ border-top:1px solid var(--card-border); padding:40px 0 44px; }
.footer-grid{
  display:grid; grid-template-columns:2fr 1fr 1fr 1fr; gap:28px; margin-bottom:28px;
}
@media (max-width:760px){ .footer-grid{ grid-template-columns:1fr 1fr; } }
.footer-col h4{ font-size:12.5px; text-transform:uppercase; letter-spacing:0.06em; color:var(--muted); margin:0 0 14px; }
.footer-col a{ display:block; font-size:13.5px; color:var(--muted); margin-bottom:10px; transition:color .18s ease; }
.footer-col a:hover{ color:var(--text); }
.footer-bottom{
  display:flex; justify-content:space-between; align-items:center; flex-wrap:wrap; gap:12px;
  padding-top:24px; border-top:1px solid var(--card-border);
  color:var(--muted-2); font-size:12.5px;
}

@media (prefers-reduced-motion:reduce){ *{ animation:none !important; transition:none !important; } }