:root{
  --bg:#ffffff;
  --text:#111827;
  --muted:#6b7280;
  --line:#e5e7eb;
  --card:#f9fafb;
  --link:#1d4ed8;
  --max: 1100px;
}

*{ box-sizing:border-box; }
html{ -webkit-text-size-adjust:100%; }
body{
  margin:0;
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Arial, "Noto Sans", "Liberation Sans", sans-serif;
  font-size:16px;
  line-height:1.55;
  color:var(--text);
  background:var(--bg);
}

a{ color:var(--link); text-decoration:none; }
a:hover{ text-decoration:underline; }

.container{ max-width:var(--max); margin:0 auto; padding:16px; }

/* Header */
header{
  border-bottom:1px solid var(--line);
  background:var(--bg);
}
.brand{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  padding:14px 0;
}
.brand .logo{
  font-weight:800;
  letter-spacing:-0.02em;
}
nav a{ margin-left:12px; color:var(--text); }
nav a.muted{ color:var(--muted); }

/* Typography */
h1{ font-size:28px; line-height:1.2; margin:18px 0 8px; letter-spacing:-0.02em; }
h2{ font-size:20px; margin:22px 0 10px; }
h3{ font-size:16px; margin:18px 0 8px; }
p{ margin:10px 0; color:var(--text); }
.muted{ color:var(--muted); }

/* Hero */
.hero{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:14px;
  padding:14px;
  margin:14px 0;
}

/* Cards */
.card{
  border:1px solid var(--line);
  border-radius:14px;
  padding:14px;
  background:var(--bg);
}
.card.note{ background:var(--card); }

/* Forms */
label{ display:block; font-weight:600; margin:10px 0 6px; }
input, select{
  width:100%;
  padding:10px 10px;
  border:1px solid var(--line);
  border-radius:10px;
  font-size:16px;
}
form h3{ font-size:18px; }

/* Buttons */
button{
  border:1px solid rgba(29, 78, 216, 0.25);
  background: var(--link);
  color:white;
  border-radius:10px;
  padding:10px 12px;
  font-size:16px;
  cursor:pointer;
}
button:hover{ filter:brightness(0.95); }

.btn-primary{
  background: var(--link) !important;
  color:#fff !important;
  border:1px solid rgba(29, 78, 216, 0.25) !important;
}
.btn-secondary{
  background:#fff !important;
  color:var(--text) !important;
  border:1px solid var(--line) !important;
}

/* Dividers */
.hr{ height:1px; background:var(--line); margin:18px 0; }

/* Ads */
.ad{
  border:1px dashed var(--line);
  border-radius:12px;
  padding:12px;
  background:#fff;
}
.ad .label{
  font-size:12px;
  color:var(--muted);
  margin-bottom:8px;
}

/* Footer */
footer{
  margin-top:26px;
  border-top:1px solid var(--line);
  padding:18px 0;
  color:var(--muted);
  font-size:14px;
}

/* Results reveal animation */
.reveal{
  overflow:hidden;
  max-height:0;
  opacity:0;
  transform: translateY(-6px);
  transition: max-height 260ms ease, opacity 220ms ease, transform 220ms ease;
}
.reveal.is-open{
  max-height:2000px;
  opacity:1;
  transform: translateY(0);
}

/* KPI cards */
.kpis{
  display:grid;
  grid-template-columns:1fr;
  gap:10px;
}
@media (min-width: 640px){
  .kpis{ grid-template-columns: repeat(2, 1fr); }
}
.kpi{
  padding:14px;
  border:1px solid var(--line);
  border-radius:12px;
  background:var(--card);
}
.kpi .big{
  font-size:34px;
  font-weight:900;
  letter-spacing:-0.03em;
  line-height:1.1;
}
.kpi .small{
  color:var(--muted);
  font-size:14px;
}

/* Output zone */
.results-zone{
  border:1px solid var(--line);
  border-radius:14px;
  padding:14px;
  background:var(--card);
}

/* Best option bar */
.bestbar{
  border-radius:14px;
  padding:14px;
  border:1px solid rgba(29, 78, 216, 0.25);
  background: rgba(29, 78, 216, 0.10);
}
.bestbar .topline{
  display:flex;
  align-items:baseline;
  justify-content:space-between;
  gap:10px;
  flex-wrap:wrap;
}
.bestbar .label{
  font-size:12px;
  font-weight:800;
  letter-spacing:0.06em;
  text-transform:uppercase;
  color: rgba(29, 78, 216, 0.95);
}
.bestbar .answer{
  font-size:22px;
  font-weight:950;
  letter-spacing:-0.02em;
}
.bestbar .delta{
  font-size:18px;
  font-weight:850;
  color:var(--text);
}
.bestbar-notes{
  margin-top:10px;
  color:var(--muted);
  font-size:13px;
}

/* =========================================
   TOOL PAGE LAYOUT (your target)
   gap | MAIN (760) | gap (sidebar centered)
   ========================================= */

.tool-layout{
  display:grid;
  grid-template-columns: 1fr;
  gap:14px;
  align-items:start;
  padding: 16px;              /* page edge padding */
}

/* Desktop: 3 columns (gap | main | gap) */
@media (min-width: 1000px){
  .tool-layout{
    grid-template-columns: 1fr minmax(0, 760px) 1fr;
    gap:16px;
  }

  .tool-main{ grid-column: 2; }

  /* Sidebar lives in the RIGHT GAP, centered within it */
  .tool-side{
    grid-column: 3;
    width: 320px;             /* fixed sidebar width */
    justify-self: center;     /* centers sidebar inside right gap */
    align-self: start;
    position: sticky;
    top: 14px;
  }
}

/* Mobile/tablet: stack */
@media (max-width: 999px){
  .tool-main, .tool-side{ grid-column: 1; }
  .tool-side{ width: auto; position: static; }
}


/* Tool pages: disable nested container gutters (prevents "4 column" look) */
.tool-layout .container{
  max-width: none;
  margin: 0;
  padding: 0;
}

footer .container{
  text-align: center;
  display: flex;
  justify-content: center;
  align-items: center;
}

/* Listing helpers */
.tool-search{
  display:flex;
  gap:10px;
  flex-wrap:wrap;
  align-items:center;
  margin-top:12px;
}

.tool-search input{
  flex: 1 1 320px;
}

.tags{
  display:flex;
  flex-wrap:wrap;
  gap:6px;
  margin-top:8px;
}

.tag{
  font-size:12px;
  color: var(--muted);
  border:1px solid var(--line);
  background: #fff;
  border-radius:999px;
  padding:3px 10px;
}

.tool-card h2 a{
  color: var(--text);
}
.tool-card h2 a:hover{
  color: var(--link);
  text-decoration:none;
}

/* ---------- Minimal homepage (search-first) ---------- */
.home-min{
  min-height: calc(100vh - 70px - 70px); /* header + footer approx */
  display:flex;
  align-items:center;
}

/* Smooth slide for the entire home search block */
.home-center{
  --homeShift: 0px;                 /* 0 = centered */
  transform: translateY(var(--homeShift));
  transition: transform 260ms ease; /* always animate movement */
  will-change: transform;
}


.home-title{
  color: var(--link);
  font-size: 44px;
  line-height: 1.05;
  margin: 0 0 10px;
  letter-spacing: -0.03em;
}

.home-tagline{
  margin: 0 0 22px;
  color: var(--muted);
  font-size: 16px;
}

.home-search{
  display:flex;
  align-items:center;
  gap:10px;
  border:1px solid var(--line);
  border-radius: 999px;
  padding: 10px 12px;
  background: #fff;
  max-width: 820px;
  margin: 0 auto;
}

.home-search-icon{
  color: var(--muted);
  display:flex;
  align-items:center;
  justify-content:center;
  padding-left: 6px;
}

.home-search input{
  border: none;
  outline: none;
  padding: 10px 6px;
  font-size: 18px;
  width: 100%;
}

.home-search input::placeholder{
  color: #9ca3af;
}

.home-clear{
  border-radius: 999px !important;
  padding: 10px 14px !important;
  white-space: nowrap;
}

.home-results{
  margin-top: 18px;
  text-align: left;
}

.home-cards{
  display:grid;
  grid-template-columns: 1fr;
  gap: 14px;
}

@media (min-width: 760px){
  .home-cards{
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 520px){
  .home-title{ font-size: 34px; }
  .home-search{ border-radius: 18px; }
}

/* --- Home search: slide + reveal animation --- */
.home-center{
  transition: transform 260ms ease;
  will-change: transform;
}

/* Default: centered */
.home-search{
  transition: transform 260ms ease;
  will-change: transform;
}

/* Results wrapper: smooth open/close like your reveal */
.home-results{
  overflow: hidden;
  max-height: 0;
  opacity: 0;
  transform: translateY(-8px);
  transition: max-height 320ms ease, opacity 220ms ease, transform 220ms ease;
}

/* When typing or results exist, open it */
.home-center.is-searching .home-results,
.home-center.has-results .home-results{
  max-height: 2000px; /* big enough */
  opacity: 1;
  transform: translateY(0);
}

/* Slide the search bar upward when typing / results present */
.home-center.is-searching .home-search,
.home-center.has-results .home-search{
  transform: translateY(-34px);
}

/* Optional: also slightly move the title/tagline up for a tighter feel */
.home-center.is-searching .home-title,
.home-center.has-results .home-title,
.home-center.is-searching .home-tagline,
.home-center.has-results .home-tagline{
  transition: transform 260ms ease, opacity 220ms ease;
}

.home-center.is-searching .home-title,
.home-center.has-results .home-title{
  transform: translateY(-18px);
}

.home-center.is-searching .home-tagline,
.home-center.has-results .home-tagline{
  transform: translateY(-18px);
  opacity: 0.9;
}


.brand-name {
  font-weight: 900;
  letter-spacing: -0.03em;
  color: var(--link);
}

#loading::after{
  content:"";
  display:inline-block;
  width:14px;
  height:14px;
  margin-left:8px;
  border:2px solid var(--line);
  border-top-color: var(--link);
  border-radius:50%;
  vertical-align:-2px;
  animation: spin .8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }