:root{
  --bg:#F2F3F5;
  --panel:#FFFFFF;
  --panel-alt:#F7F8FA;
  --border:#E1E4E8;
  --border-soft:#EAECEF;
  --gold:#B8860B;
  --gold-bright:#8A6400;
  --gold-solid:#D4A017;
  --text:#1C1F24;
  --text-muted:#5B6270;
  --text-dim:#8A909B;
  --green:#1F8A54;
  --red:#B23A32;
  --font-display:'Space Grotesk', sans-serif;
  --font-body:'Inter', sans-serif;
  --font-mono:'JetBrains Mono', monospace;
}

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

html{scroll-behavior:smooth;}

body{
  background:var(--bg);
  color:var(--text);
  font-family:var(--font-body);
  line-height:1.5;
  -webkit-font-smoothing:antialiased;
}

/* subtle grid texture on the whole page, terminal feel */
body::before{
  content:"";
  position:fixed;
  inset:0;
  background-image:
    linear-gradient(rgba(201,162,39,0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(201,162,39,0.025) 1px, transparent 1px);
  background-size:40px 40px;
  pointer-events:none;
  z-index:0;
}

a{color:inherit;}

::selection{background:var(--gold); color:#FFFFFF;}

/* ---------- Header ---------- */
header{
  position:sticky;
  top:0;
  z-index:50;
  background:rgba(242,243,245,0.92);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--border-soft);
}

.header-inner{
  max-width:1100px;
  margin:0 auto;
  padding:16px 20px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
}

.brand{
  display:flex;
  align-items:baseline;
  gap:10px;
  text-decoration:none;
}

.brand-mark{
  font-family:var(--font-display);
  font-weight:700;
  font-size:20px;
  letter-spacing:-0.02em;
}
.brand-mark span{color:var(--gold-bright);}

.brand-tag{
  font-family:var(--font-mono);
  font-size:11px;
  color:var(--text-dim);
  letter-spacing:0.08em;
  text-transform:uppercase;
  display:none;
}
@media(min-width:640px){ .brand-tag{display:inline;} }

.xau-ticker{
  font-family:var(--font-mono);
  font-size:12px;
  color:var(--text-muted);
  display:flex;
  align-items:center;
  gap:8px;
  border:1px solid var(--border);
  padding:6px 12px;
  border-radius:3px;
  background:var(--panel);
}
.xau-ticker .dot{
  width:6px; height:6px; border-radius:50%;
  background:var(--green);
  box-shadow:0 0 6px var(--green);
  animation:pulse 2s ease-in-out infinite;
}
@keyframes pulse{
  0%,100%{opacity:1;}
  50%{opacity:0.35;}
}

/* ---------- Tabs / nav ---------- */
.tabs{
  max-width:1100px;
  margin:0 auto;
  padding:0 20px;
  display:flex;
  gap:2px;
  overflow-x:auto;
  scrollbar-width:none;
}
.tabs::-webkit-scrollbar{display:none;}

.tab-btn{
  font-family:var(--font-mono);
  font-size:12.5px;
  letter-spacing:0.03em;
  color:var(--text-dim);
  background:transparent;
  border:none;
  padding:12px 16px;
  cursor:pointer;
  white-space:nowrap;
  border-bottom:2px solid transparent;
  text-decoration:none;
  display:inline-block;
  transition:color 0.15s ease, border-color 0.15s ease;
}
.tab-btn:hover{color:var(--text-muted);}
.tab-btn.active{
  color:var(--gold-bright);
  border-bottom-color:var(--gold);
}

/* ---------- Layout ---------- */
main{
  position:relative;
  z-index:1;
  max-width:1100px;
  margin:0 auto;
  padding:32px 20px 80px;
}

.view{ animation:fadeIn 0.25s ease; }
@keyframes fadeIn{ from{opacity:0; transform:translateY(4px);} to{opacity:1; transform:translateY(0);} }

.view-head{
  margin-bottom:24px;
}
.eyebrow{
  font-family:var(--font-mono);
  font-size:11px;
  color:var(--gold);
  text-transform:uppercase;
  letter-spacing:0.12em;
  margin-bottom:8px;
}
h1.view-title{
  font-family:var(--font-display);
  font-weight:600;
  font-size:28px;
  letter-spacing:-0.01em;
  margin-bottom:6px;
}
.view-desc{
  color:var(--text-muted);
  font-size:14.5px;
  max-width:560px;
}

.calc-grid{
  display:grid;
  grid-template-columns:1fr;
  gap:20px;
}
@media(min-width:800px){
  .calc-grid{grid-template-columns:1fr 1fr;}
}

/* ---------- Panel (input side) ---------- */
.panel{
  background:var(--panel);
  border:1px solid var(--border);
  border-radius:6px;
  padding:22px;
}

.panel-label{
  font-family:var(--font-mono);
  font-size:11px;
  color:var(--text-dim);
  text-transform:uppercase;
  letter-spacing:0.1em;
  margin-bottom:16px;
}

.field{
  margin-bottom:16px;
}
.field:last-child{margin-bottom:0;}
.field label{
  display:block;
  font-size:13px;
  color:var(--text-muted);
  margin-bottom:6px;
}
.field input, .field select{
  width:100%;
  background:var(--panel-alt);
  border:1px solid var(--border);
  color:var(--text);
  font-family:var(--font-mono);
  font-size:15px;
  padding:10px 12px;
  border-radius:4px;
  outline:none;
  transition:border-color 0.15s ease;
}
.field input:focus, .field select:focus{
  border-color:var(--gold);
}
.field input::placeholder{
  color:var(--text-dim);
}
.field-row{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:12px;
}
.field-hint{
  font-size:11.5px;
  color:var(--text-dim);
  margin-top:5px;
}
.field-hint.warn{ color:var(--red); }

.advanced-toggle{
  font-family:var(--font-mono);
  font-size:11.5px;
  color:var(--text-dim);
  background:none;
  border:none;
  padding:0;
  cursor:pointer;
  text-decoration:underline;
  text-underline-offset:3px;
  margin-top:4px;
  margin-bottom:14px;
}
.advanced-toggle:hover{color:var(--text-muted);}
.advanced-fields{display:none;}
.advanced-fields.open{display:block;}

/* ---------- Output ticket ---------- */
.ticket{
  background:var(--panel);
  border:1px solid var(--border);
  border-radius:6px;
  padding:22px;
  position:relative;
  display:flex;
  flex-direction:column;
}

.ticket-top{
  display:flex;
  justify-content:space-between;
  align-items:center;
  margin-bottom:18px;
}
.ticket-label{
  font-family:var(--font-mono);
  font-size:11px;
  color:var(--text-dim);
  text-transform:uppercase;
  letter-spacing:0.1em;
}
.ticket-symbol{
  font-family:var(--font-mono);
  font-size:11px;
  color:var(--gold);
  border:1px solid rgba(201,162,39,0.35);
  padding:3px 8px;
  border-radius:3px;
}

.ticket-divider{
  border:none;
  border-top:1px dashed var(--border);
  margin:0 0 18px;
}

.ticket-result{
  margin-bottom:18px;
}
.ticket-result-label{
  font-size:12.5px;
  color:var(--text-muted);
  margin-bottom:4px;
}
.ticket-result-value{
  font-family:var(--font-mono);
  font-weight:700;
  font-size:34px;
  color:var(--gold-bright);
  letter-spacing:-0.01em;
  line-height:1.1;
}
.ticket-result-value.small{ font-size:22px; color:var(--text); }

.ticket-sub{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:12px;
  margin-top:auto;
  padding-top:16px;
  border-top:1px solid var(--border-soft);
}
.ticket-sub-item .k{
  font-size:11px;
  color:var(--text-dim);
  margin-bottom:3px;
}
.ticket-sub-item .v{
  font-family:var(--font-mono);
  font-size:14px;
  color:var(--text);
}
.v.green{color:var(--green);}
.v.red{color:var(--red);}

.ticket-note{
  font-size:12px;
  color:var(--text-dim);
  margin-top:14px;
  line-height:1.5;
}

/* ---------- Promo banner (temporary, until real ads are set up) ---------- */
.promo-banner{
  margin:24px 0;
}
.promo-banner .promo-tag{
  display:block;
  font-family:var(--font-mono);
  font-size:10px;
  color:var(--text-dim);
  text-transform:uppercase;
  letter-spacing:0.1em;
  margin-bottom:8px;
}
.promo-banner a{
  display:block;
  border-radius:8px;
  overflow:hidden;
  border:1px solid var(--border);
  transition:opacity 0.15s ease;
}
.promo-banner a:hover{opacity:0.92;}
.promo-banner img{
  display:block;
  width:100%;
  height:auto;
  max-height:200px;
  object-fit:cover;
}

/* ---------- Ad slot ---------- */
.ad-slot{
  border:1px dashed var(--border);
  border-radius:6px;
  background:var(--panel-alt);
  color:var(--text-muted);
  font-family:var(--font-mono);
  font-size:11px;
  text-transform:uppercase;
  letter-spacing:0.08em;
  display:flex;
  align-items:center;
  justify-content:center;
  text-align:center;
  padding:18px;
  margin:24px 0;
}
.ad-slot.banner{ min-height:90px; }
.ad-slot.square{ min-height:250px; }

/* ---------- Broker page ---------- */
.broker-list{
  display:grid;
  gap:14px;
}
.broker-card{
  background:var(--panel);
  border:1px solid var(--border);
  border-radius:6px;
  padding:20px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
}
.broker-info h3{
  font-family:var(--font-display);
  font-size:17px;
  font-weight:600;
  margin-bottom:4px;
}
.broker-info p{
  font-size:13px;
  color:var(--text-muted);
  max-width:420px;
}
.broker-cta{
  font-family:var(--font-mono);
  font-size:12.5px;
  color:var(--text);
  background:var(--gold-solid);
  padding:10px 18px;
  border-radius:4px;
  text-decoration:none;
  white-space:nowrap;
  font-weight:600;
  transition:filter 0.15s ease;
}
.broker-cta:hover{filter:brightness(1.08);}

.broker-editnote{
  background:var(--panel-alt);
  border:1px solid var(--border);
  border-left:3px solid var(--gold);
  border-radius:4px;
  padding:14px 16px;
  font-size:12.5px;
  color:var(--text-muted);
  margin-bottom:20px;
  font-family:var(--font-mono);
  line-height:1.6;
}

/* ---------- Info / educational content section ---------- */
.info-section{
  margin-top:32px;
  padding-top:28px;
  border-top:1px solid var(--border-soft);
}
.info-section h2{
  font-family:var(--font-display);
  font-size:19px;
  font-weight:600;
  margin-bottom:12px;
}
.info-section p{
  font-size:14px;
  color:var(--text-muted);
  line-height:1.75;
  max-width:720px;
  margin-bottom:14px;
}
.info-section p:last-child{margin-bottom:0;}

/* ---------- Homepage ---------- */
.hero{
  margin-bottom:32px;
}
.hero p{
  color:var(--text-muted);
  font-size:15px;
  max-width:600px;
  margin-top:10px;
}

.tool-grid{
  display:grid;
  grid-template-columns:1fr;
  gap:14px;
  margin-top:8px;
}
@media(min-width:640px){
  .tool-grid{grid-template-columns:1fr 1fr;}
}

.tool-card{
  background:var(--panel);
  border:1px solid var(--border);
  border-radius:6px;
  padding:20px;
  text-decoration:none;
  display:block;
  transition:border-color 0.15s ease, transform 0.15s ease;
}
.tool-card:hover{
  border-color:var(--gold);
  transform:translateY(-2px);
}
.tool-card .tool-tag{
  font-family:var(--font-mono);
  font-size:10.5px;
  color:var(--gold);
  text-transform:uppercase;
  letter-spacing:0.1em;
  margin-bottom:8px;
  display:block;
}
.tool-card h2{
  font-family:var(--font-display);
  font-size:18px;
  font-weight:600;
  margin-bottom:6px;
}
.tool-card p{
  font-size:13px;
  color:var(--text-muted);
}

/* ---------- Compounding table ---------- */
.compound-table-wrap{
  background:var(--panel);
  border:1px solid var(--border);
  border-radius:6px;
  overflow-x:auto;
  margin-top:20px;
}
.compound-table{
  width:100%;
  border-collapse:collapse;
  font-family:var(--font-mono);
  font-size:13px;
  white-space:nowrap;
}
.compound-table th{
  text-align:left;
  font-size:10.5px;
  color:var(--text-dim);
  text-transform:uppercase;
  letter-spacing:0.08em;
  font-weight:600;
  padding:12px 16px;
  border-bottom:1px solid var(--border);
  background:var(--panel-alt);
}
.compound-table td{
  padding:10px 16px;
  border-bottom:1px solid var(--border-soft);
  color:var(--text);
}
.compound-table tr:last-child td{border-bottom:none;}
.compound-table td.green{color:var(--green);}
.compound-table td.gold{color:var(--gold-bright); font-weight:600;}

.disclaimer-box{
  background:var(--panel-alt);
  border:1px solid var(--border);
  border-left:3px solid var(--red);
  border-radius:4px;
  padding:14px 16px;
  font-size:12.5px;
  color:var(--text-muted);
  margin-top:20px;
  line-height:1.6;
}

/* ---------- Footer ---------- */
footer{
  border-top:1px solid var(--border-soft);
  padding:24px 20px;
  text-align:center;
  font-size:12px;
  color:var(--text-dim);
  position:relative;
  z-index:1;
}
.footer-links{
  margin-top:10px;
  font-family:var(--font-mono);
  font-size:11px;
}
.footer-links a{
  color:var(--text-dim);
  text-decoration:underline;
  text-underline-offset:3px;
}
.footer-links a:hover{color:var(--text-muted);}