/* Self-hosted fonts: Inter (SF Pro-alike) + JetBrains Mono (SF Mono-alike)
   These render identically on Windows, macOS, iOS, and Android — unlike
   Apple's SF Pro/SF Mono, which are licensed only for Apple platforms
   and can't be legally embedded in a general website. */
@font-face{
  font-family: "Inter";
  src: url("./fonts/Inter-400.woff2") format("woff2");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}
@font-face{
  font-family: "Inter";
  src: url("./fonts/Inter-500.woff2") format("woff2");
  font-weight: 500;
  font-style: normal;
  font-display: swap;
}
@font-face{
  font-family: "Inter";
  src: url("./fonts/Inter-600.woff2") format("woff2");
  font-weight: 600;
  font-style: normal;
  font-display: swap;
}
@font-face{
  font-family: "Inter";
  src: url("./fonts/Inter-700.woff2") format("woff2");
  font-weight: 700;
  font-style: normal;
  font-display: swap;
}
@font-face{
  font-family: "JetBrains Mono";
  src: url("./fonts/JetBrainsMono-400.woff2") format("woff2");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}
@font-face{
  font-family: "JetBrains Mono";
  src: url("./fonts/JetBrainsMono-500.woff2") format("woff2");
  font-weight: 500;
  font-style: normal;
  font-display: swap;
}

:root{
  --bg: #f5f3ef;
  --panel: #ffffff;
  --ink: #1f2328;
  --muted: #5d636b;
  --stroke: rgba(31, 35, 40, 0.12);
  --shadow: 0 16px 40px rgba(31, 35, 40, 0.12);
  --accent: #b45309; /* warm amber (non-blue) */
  --accent2: #0f766e; /* deep teal */
  --danger: #b42318;
  --radius: 18px;
}

*{ box-sizing: border-box; }
html,body{ height:100%; }
body{
  margin:0;
  font-family: "Inter", ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Apple Color Emoji","Segoe UI Emoji";
  color: var(--ink);
  background:
    radial-gradient(1100px 600px at 15% -10%, rgba(180,83,9,0.14), transparent 60%),
    radial-gradient(900px 520px at 90% 0%, rgba(15,118,110,0.10), transparent 55%),
    var(--bg);
}

.page{ max-width: 1120px; margin: 0 auto; padding: 22px 16px 34px; }

.topbar{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap: 14px;
  padding: 14px 4px 18px;
}
.brand{ display:flex; gap: 12px; align-items:center; }
.brand__mark{
  width: 42px; height: 42px; border-radius: 14px;
  background:
    linear-gradient(135deg, rgba(180,83,9,0.95), rgba(15,118,110,0.92));
  box-shadow: 0 10px 30px rgba(31,35,40,0.18);
}
.brand__title{ font-weight: 780; letter-spacing: -0.02em; }
.brand__subtitle{ color: var(--muted); font-size: 13px; margin-top: 2px; }
.topbar__meta{ display:flex; gap: 8px; flex-wrap: wrap; justify-content:flex-end; }
.pill{
  font-size: 12px; color: rgba(31,35,40,0.78);
  border: 1px solid var(--stroke);
  background: rgba(255,255,255,0.7);
  padding: 7px 10px;
  border-radius: 999px;
  backdrop-filter: blur(6px);
}

.layout{
  display:grid;
  grid-template-columns: 1.35fr 0.85fr;
  gap: 16px;
  align-items:start;
}

.card{
  background: var(--panel);
  border: 1px solid var(--stroke);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow:hidden;
}
.card__head{
  padding: 18px 18px 0;
}
.card__title{
  margin:0;
  font-size: 20px;
  letter-spacing: -0.02em;
}
.card__desc{
  margin: 8px 0 0;
  color: var(--muted);
  line-height: 1.5;
  font-size: 14px;
}

.form{ padding: 16px 18px 18px; }

.form__errors{
  border: 1px solid rgba(180,35,24,0.35);
  background: rgba(180,35,24,0.06);
  border-radius: 14px;
  padding: 12px 12px 10px;
  margin-bottom: 14px;
}
.form__errorsTitle{ font-weight: 700; margin-bottom: 6px; }
.form__errorsList{ margin: 0; padding-left: 18px; color: rgba(31,35,40,0.92); }
.form__errorsList li{ margin: 4px 0; }

.section{ padding: 12px 0; border-bottom: 1px solid rgba(31,35,40,0.06); }
.section:last-of-type{ border-bottom: none; }
.section__head{ margin-bottom: 10px; }
.section__title{
  margin: 0;
  font-size: 14px;
  text-transform: uppercase;
  letter-spacing: 0.10em;
  color: rgba(31,35,40,0.70);
}
.section__hint{ margin: 6px 0 0; color: var(--muted); font-size: 13px; }

.grid{
  display:grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.field{ display:flex; flex-direction:column; gap: 6px; }
.label{ font-size: 13px; font-weight: 650; }
.help{ color: var(--muted); font-size: 12px; line-height: 1.35; }

select,input[type="number"]{
  appearance: none;
  width:100%;
  border-radius: 14px;
  border: 1px solid rgba(31,35,40,0.16);
  padding: 11px 12px;
  background: rgba(245,243,239,0.55);
  color: var(--ink);
  outline: none;
  transition: border-color 140ms ease, box-shadow 140ms ease, transform 140ms ease;
}
select:focus,input[type="number"]:focus{
  border-color: rgba(180,83,9,0.55);
  box-shadow: 0 0 0 4px rgba(180,83,9,0.16);
}

.segmented{
  display:flex;
  width:100%;
  border: 1px solid rgba(31,35,40,0.16);
  border-radius: 14px;
  overflow:hidden;
  background: rgba(245,243,239,0.55);
}
.segmented input{ position:absolute; opacity:0; pointer-events:none; }
.segmented label{
  flex:1;
  text-align:center;
  padding: 11px 10px;
  font-weight: 650;
  font-size: 13px;
  color: rgba(31,35,40,0.74);
  cursor:pointer;
  transition: background 140ms ease, color 140ms ease;
}
.segmented input:checked + label{
  background: linear-gradient(135deg, rgba(180,83,9,0.20), rgba(15,118,110,0.14));
  color: rgba(31,35,40,0.92);
}

.ctaRow{
  display:flex;
  gap: 10px;
  align-items:center;
  margin-top: 14px;
  flex-wrap: wrap;
}
.ctaRow__note{ margin-left:auto; color: var(--muted); font-size: 12px; }

.btn{
  border-radius: 14px;
  padding: 12px 14px;
  border: 1px solid rgba(31,35,40,0.18);
  background: transparent;
  color: var(--ink);
  font-weight: 750;
  letter-spacing: -0.01em;
  cursor:pointer;
  transition: transform 120ms ease, box-shadow 140ms ease, background 140ms ease, border-color 140ms ease;
}
.btn:active{ transform: translateY(1px); }
.btn--primary{
  border-color: rgba(180,83,9,0.42);
  background: linear-gradient(135deg, rgba(180,83,9,0.95), rgba(15,118,110,0.85));
  color: #fff;
  box-shadow: 0 14px 30px rgba(31,35,40,0.18);
}
.btn--primary:hover{ box-shadow: 0 20px 48px rgba(31,35,40,0.22); }
.btn--ghost:hover{ background: rgba(31,35,40,0.05); }

.card--results{ position: sticky; top: 14px; }
.results{ padding: 12px 18px 18px; }
.resultsPlaceholder{
  padding: 14px 18px 18px;
  color: var(--muted);
  line-height: 1.5;
}

.resultGrid{
  display:grid;
  grid-template-columns: 1fr;
  gap: 12px;
}
.metric{
  border: 1px solid rgba(31,35,40,0.10);
  background: rgba(245,243,239,0.45);
  border-radius: 16px;
  padding: 12px 12px 10px;
}
.metric__label{ font-size: 12px; color: var(--muted); text-transform: uppercase; letter-spacing: 0.12em; }
.metric__value{ font-family: "JetBrains Mono", ui-monospace, "SF Mono", Menlo, Consolas, monospace; font-size: 24px; font-weight: 700; letter-spacing: -0.01em; margin-top: 6px; }
.metric__sub{ margin-top: 5px; font-size: 12px; color: rgba(31,35,40,0.70); }

.divider{ height: 1px; background: rgba(31,35,40,0.10); margin: 14px 0; }
.why__title{ font-weight: 800; letter-spacing: -0.01em; margin-bottom: 8px; }
.why__list{ margin: 0; padding-left: 18px; color: rgba(31,35,40,0.88); }
.why__list li{ margin: 6px 0; }

/* Animated reveal */
.results[data-visible="false"]{
  opacity: 0;
  transform: translateY(8px);
  pointer-events:none;
}
.results[data-visible="true"]{
  opacity: 1;
  transform: translateY(0);
  transition: opacity 220ms ease, transform 240ms cubic-bezier(.2,.9,.2,1);
}

.footer{
  margin-top: 14px;
  color: var(--muted);
  font-size: 12px;
  padding: 8px 4px 0;
}

@media (max-width: 920px){
  .layout{ grid-template-columns: 1fr; }
  .card--results{ position: static; }
  .resultGrid{ grid-template-columns: 1fr 1fr; }
}

@media (max-width: 560px){
  .grid{ grid-template-columns: 1fr; }
  .resultGrid{ grid-template-columns: 1fr; }
  .topbar{ align-items:flex-start; flex-direction: column; }
  .ctaRow__note{ margin-left: 0; width: 100%; }
}