:root{
  --bg: #f6f7f9;
  --panel: #ffffff;
  --text: #0f172a;
  --muted: #475569;
  --border: rgba(15, 23, 42, 0.12);
  --shadow: 0 10px 30px rgba(2, 6, 23, 0.08);
  --primary: #2563eb;
  --primary-2: #1d4ed8;
  --danger: #dc2626;
  --success: #16a34a;

  --focus: 0 0 0 4px rgba(37, 99, 235, 0.25);
  --radius: 16px;
  --font: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Apple Color Emoji","Segoe UI Emoji";
}

html[data-theme="dark"]{
  --bg: #0b1220;
  --panel: #0f1b31;
  --text: #e5e7eb;
  --muted: #a7b0c0;
  --border: rgba(229, 231, 235, 0.14);
  --shadow: 0 10px 30px rgba(0, 0, 0, 0.4);
  --primary: #60a5fa;
  --primary-2: #3b82f6;
  --danger: #f87171;
  --success: #34d399;

  --focus: 0 0 0 4px rgba(96, 165, 250, 0.25);
}

*{ box-sizing: border-box; }
body{
  margin: 0;
  font-family: var(--font);
  color: var(--text);
  background: var(--bg);
}

.skip-link{
  position: absolute;
  left: -999px;
  top: 10px;
  padding: 10px 12px;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  color: var(--text);
  z-index: 999;
}
.skip-link:focus{ left: 12px; outline: none; box-shadow: var(--focus); }

.topbar{
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 18px 18px 10px;
  max-width: 1100px;
  margin: 0 auto;
}
.logo{
  width: 70px;
  height: auto;
  border-radius: 90px;
  display: grid;
  place-items: center;
  display: block;
}
.topbar h1{
  margin: 0;
  font-size: 18px;
  letter-spacing: 0.2px;
}
.subtitle{
  margin: 2px 0 0;
  color: var(--muted);
  font-size: 13px;
}

.theme{
  display: flex;
  align-items: center;
  gap: 10px;
}
.theme__label{
  color: var(--muted);
  font-size: 13px;
}
.theme__select{
  background: var(--panel);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 10px 12px;
  min-width: 150px;
}
.theme__select:focus{ outline: none; box-shadow: var(--focus); }

.container{
  max-width: 1100px;
  margin: 0 auto;
  padding: 10px 18px 30px;
}

.card{
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 18px;
  margin-top: 14px;
}

.card h2{
  margin: 0 0 14px;
  font-size: 16px;
  letter-spacing: 0.2px;
}

.form .row{
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
  margin-bottom: 14px;
}
@media (max-width: 820px){
  .form .row{ grid-template-columns: 1fr; }
  .topbar{ flex-direction: column; align-items: flex-start; }
}

.field label{
  display: block;
  font-weight: 600;
  font-size: 13px;
  margin-bottom: 8px;
}
.field input, .field select{
  width: 100%;
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 11px 12px;
  font-size: 14px;
}
.field input:focus, .field select:focus{
  outline: none;
  box-shadow: var(--focus);
  border-color: rgba(37, 99, 235, 0.5);
}
.help{
  margin: 8px 0 0;
  color: var(--muted);
  font-size: 12.5px;
  line-height: 1.35;
}
.select{ appearance: none; }

.actions{
  display: flex;
  gap: 12px;
  align-items: center;
  margin-top: 6px;
}
.btn{
  border: none;
  background: var(--primary);
  color: white;
  font-weight: 700;
  padding: 11px 14px;
  border-radius: 12px;
  cursor: pointer;
  transition: transform .02s ease, background .15s ease;
}
.btn:hover{ background: var(--primary-2); }
.btn:active{ transform: translateY(1px); }
.btn:focus{ outline: none; box-shadow: var(--focus); }
.btn--secondary{
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border);
}

.results .kpis{
  display: grid;
  grid-template-columns: 1fr 1fr 1.2fr;
  gap: 12px;
  margin-top: 10px;
}
@media (max-width: 820px){
  .results .kpis{ grid-template-columns: 1fr; }
}
.kpi{
  padding: 14px;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: rgba(37, 99, 235, 0.03);
}
.kpi--primary{
  background: rgba(37, 99, 235, 0.08);
  border-color: rgba(37, 99, 235, 0.25);
}
.kpi__label{
  color: var(--muted);
  font-size: 13px;
  margin-bottom: 8px;
}
.kpi__value{
  font-size: 28px;
  font-weight: 900;
  letter-spacing: 0.2px;
}

.explain{
  margin-top: 12px;
  color: var(--muted);
  font-size: 13.5px;
}
.explain strong{ color: var(--text); }
.small{ margin-top: 10px; font-size: 12.5px; color: var(--muted); }

.divider{
  height: 1px;
  background: var(--border);
  margin: 16px 0;
}

.extras h3{
  margin: 0 0 8px;
  font-size: 14px;
}
.list{
  margin: 0 0 14px;
  padding-left: 18px;
  color: var(--muted);
  font-size: 13.5px;
  line-height: 1.5;
}
.extra-actions{
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}
.toggle{
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--muted);
  font-size: 13.5px;
}
.toggle input{
  width: 18px;
  height: 18px;
  accent-color: var(--primary);
}

.toast{
  margin-top: 10px;
  min-height: 24px;
  color: var(--text);
  font-size: 13.5px;
}
.toast--ok{ color: var(--success); }
.toast--warn{ color: var(--danger); }