/* Starlink Calculator — night-sky tech. System fonts only. Independent site. */

:root {
  --sky: #070B14;
  --sky-2: #0A101C;
  --panel: #0E1624;
  --panel-2: #121C2E;
  --line: #1E2A3D;
  --line-strong: #2A3A52;
  --neon: #2EC5FF;
  --neon-dim: #1A8FBF;
  --neon-soft: rgba(46, 197, 255, 0.14);
  --warm: #E8A84A;
  --warm-dim: #B87E2E;
  --warm-soft: rgba(232, 168, 74, 0.12);
  --text: #E8EEF6;
  --muted: #8B97A8;
  --ok: #4ADE80;
  --warn: #FBBF24;
  --heavy: #FB7185;
  --max: 70rem;
  --font: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --mono: ui-monospace, "SF Mono", "Cascadia Mono", "Segoe UI Mono", Menlo, Consolas, monospace;
  --radius: 10px;
  --shadow: 0 12px 40px rgba(0, 0, 0, 0.35);
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font);
  background: var(--sky);
  color: var(--text);
  line-height: 1.55;
  font-size: 1.05rem;
  min-height: 100vh;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--neon); text-decoration-thickness: 1px; text-underline-offset: 0.18em; }
a:hover { color: #7DDBFF; }
a:focus-visible, button:focus-visible, input:focus-visible, select:focus-visible, summary:focus-visible {
  outline: 3px solid var(--neon); outline-offset: 2px;
}
.skip-link {
  position: absolute; left: 0.75rem; top: -4rem; z-index: 1000;
  padding: 0.5rem 0.85rem; background: var(--neon); color: var(--sky);
  font-weight: 700; text-decoration: none; border-radius: 6px;
}
.skip-link:focus { top: 0.75rem; color: var(--sky); }
.wrap, .header-inner, .nav-inner, .footer-inner {
  width: min(var(--max), calc(100% - 2rem)); margin-inline: auto;
}
.site-header {
  background: rgba(7, 11, 20, 0.92); border-bottom: 1px solid var(--line);
  backdrop-filter: blur(10px); position: sticky; top: 0; z-index: 50;
}
.header-inner {
  display: flex; align-items: center; justify-content: space-between;
  gap: 1rem; padding: 0.85rem 0;
}
.brand { display: flex; align-items: center; gap: 0.7rem; color: inherit; text-decoration: none; }
.brand:hover { color: inherit; }
.brand-mark {
  display: grid; place-items: center; width: 2.35rem; height: 2.35rem;
  border: 1.5px solid var(--neon); border-radius: 8px; color: var(--neon);
  font-family: var(--mono); font-size: 0.72rem; font-weight: 700;
  letter-spacing: 0.04em; background: var(--neon-soft);
}
.brand-text { display: flex; flex-direction: column; line-height: 1.15; }
.brand-name { font-weight: 700; letter-spacing: -0.01em; font-size: 1rem; }
.brand-tag { color: var(--muted); font-size: 0.72rem; font-family: var(--mono); }
.nav-toggle {
  display: inline-flex; align-items: center; gap: 0.4rem;
  background: var(--panel); color: var(--text); border: 1px solid var(--line-strong);
  padding: 0.45rem 0.75rem; font: inherit; font-size: 0.85rem; border-radius: 8px; cursor: pointer;
}
.nav-toggle:hover { border-color: var(--neon); color: var(--text); background: var(--panel-2); }
.site-nav { border-top: 1px solid var(--line); background: var(--sky-2); }
.nav-list {
  display: flex; flex-wrap: wrap; align-items: center; gap: 0.35rem 1.15rem;
  list-style: none; margin: 0; padding: 0.65rem 0 0.8rem;
}
.nav-list a { color: var(--text); text-decoration: none; font-size: 0.95rem; }
.nav-list a:hover, .nav-list a[aria-current="page"] { color: var(--neon); }
.nav-list a[aria-current="page"] {
  text-decoration: underline; text-underline-offset: 0.28em; text-decoration-thickness: 1.5px;
}
.nav-cta { margin-left: auto; }
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 0.4rem;
  padding: 0.65rem 1.05rem; border-radius: 8px; font: inherit; font-weight: 650;
  font-size: 0.95rem; text-decoration: none; border: 1px solid transparent; cursor: pointer;
  line-height: 1.2; transition: background 0.15s ease, color 0.15s ease, border-color 0.15s ease;
}
.btn-primary { background: var(--neon); color: var(--sky); border-color: var(--neon); }
.btn-primary:hover { background: #7DDBFF; color: var(--sky); border-color: #7DDBFF; }
.btn-ghost { background: transparent; color: var(--text); border-color: var(--line-strong); }
.btn-ghost:hover { background: var(--panel); color: var(--text); border-color: var(--neon); }
.nav-list .btn { padding: 0.45rem 0.85rem; font-size: 0.88rem; text-decoration: none; }
@media (max-width: 52rem) {
  .site-nav[data-open="false"] { display: none; }
  .nav-cta { margin-left: 0; width: 100%; }
  .nav-cta .btn { width: 100%; }
}
@media (min-width: 52.01rem) {
  .nav-toggle { display: none; }
  .site-nav[data-open="false"] { display: block; }
}
.hero {
  position: relative; overflow: hidden; border-bottom: 1px solid var(--line); background: var(--sky-2);
}
.hero-media { position: absolute; inset: 0; }
.hero-media img { width: 100%; height: 100%; object-fit: cover; object-position: center 40%; }
.hero-scrim {
  position: absolute; inset: 0;
  background:
    linear-gradient(90deg, rgba(7,11,20,0.92) 0%, rgba(7,11,20,0.78) 42%, rgba(7,11,20,0.35) 72%, rgba(7,11,20,0.55) 100%),
    linear-gradient(180deg, rgba(7,11,20,0.2) 0%, rgba(7,11,20,0.85) 100%);
}
.hero-inner { position: relative; z-index: 1; padding: 2.4rem 0 2.6rem; }
.badge {
  display: inline-block; font-family: var(--mono); font-size: 0.72rem; letter-spacing: 0.08em;
  text-transform: uppercase; color: var(--neon); border: 1px solid var(--line-strong);
  background: rgba(14,22,36,0.7); padding: 0.28rem 0.55rem; border-radius: 999px; margin-bottom: 0.85rem;
}
.kicker {
  font-family: var(--mono); font-size: 0.75rem; letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--neon); margin: 0 0 0.4rem;
}
h1, h2, h3 { line-height: 1.2; font-weight: 700; letter-spacing: -0.02em; }
h1 { font-size: clamp(1.75rem, 4.2vw, 2.65rem); margin: 0 0 0.75rem; max-width: 18ch; }
h2 { font-size: 1.35rem; margin: 0 0 0.65rem; }
h3 { font-size: 1.05rem; margin: 0 0 0.4rem; }
.lede { font-size: 1.12rem; color: var(--muted); max-width: 48ch; margin: 0 0 1.25rem; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 0.65rem; margin-top: 0.35rem; }
.callout {
  background: var(--panel); border: 1px solid var(--line); border-left: 3px solid var(--warm);
  border-radius: var(--radius); padding: 0.9rem 1rem; color: var(--muted); font-size: 0.95rem; max-width: 62ch;
}
.callout strong { color: var(--text); }
.wrap { padding: 1.75rem 0 3rem; }
.page-hero { padding: 1.75rem 0 0.5rem; }
.page-hero .lede { margin-bottom: 0.5rem; }
.section { margin: 2rem 0; }
.section-head {
  display: flex; flex-wrap: wrap; align-items: baseline; justify-content: space-between;
  gap: 0.5rem 1rem; margin-bottom: 1rem;
}
.section-head p { color: var(--muted); margin: 0; font-size: 0.95rem; }
.calc-layout { display: grid; gap: 1.25rem; align-items: start; }
@media (min-width: 64rem) {
  .calc-layout { grid-template-columns: minmax(0, 1.35fr) minmax(18rem, 0.85fr); gap: 1.5rem; }
  .results-panel { position: sticky; top: 5.25rem; }
}
.panel {
  background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 1.1rem 1.15rem 1.25rem; box-shadow: var(--shadow);
}
.panel + .panel { margin-top: 1rem; }
.panel-title {
  display: flex; align-items: center; gap: 0.5rem; margin: 0 0 0.85rem; font-size: 1.05rem;
}
.panel-title .dot {
  width: 0.55rem; height: 0.55rem; border-radius: 50%; background: var(--neon);
  box-shadow: 0 0 10px var(--neon);
}
.field-grid { display: grid; gap: 0.85rem; }
@media (min-width: 40rem) {
  .field-grid.two { grid-template-columns: repeat(2, 1fr); }
  .field-grid.three { grid-template-columns: repeat(3, 1fr); }
}
.field { display: flex; flex-direction: column; gap: 0.35rem; }
.field label { font-size: 0.88rem; color: var(--text); font-weight: 600; }
.field .hint { font-size: 0.78rem; color: var(--muted); margin: 0; }
.stepper {
  display: grid; grid-template-columns: 2.4rem 1fr 2.4rem; align-items: center;
  gap: 0.35rem; background: var(--sky); border: 1px solid var(--line-strong);
  border-radius: 8px; padding: 0.2rem;
}
.stepper button {
  width: 2.4rem; height: 2.4rem; border: 0; border-radius: 6px; background: var(--panel-2);
  color: var(--text); font: inherit; font-size: 1.2rem; font-weight: 700; cursor: pointer; line-height: 1;
}
.stepper button:hover { background: var(--neon-soft); color: var(--neon); }
.stepper button:disabled { opacity: 0.35; cursor: not-allowed; }
.stepper input {
  width: 100%; border: 0; background: transparent; color: var(--text); text-align: center;
  font: inherit; font-weight: 700; font-variant-numeric: tabular-nums; font-size: 1.05rem;
  padding: 0.35rem; -moz-appearance: textfield;
}
.stepper input::-webkit-outer-spin-button,
.stepper input::-webkit-inner-spin-button { -webkit-appearance: none; margin: 0; }
.profile-pills { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0.45rem; }
.profile-pills button {
  font: inherit; font-size: 0.9rem; padding: 0.7rem 0.5rem; border-radius: 8px;
  border: 1px solid var(--line-strong); background: var(--sky); color: var(--muted); cursor: pointer;
}
.profile-pills button:hover { border-color: var(--neon); color: var(--text); }
.profile-pills button[aria-pressed="true"] {
  background: var(--neon-soft); border-color: var(--neon); color: var(--neon); font-weight: 700;
}
.profile-pills button small {
  display: block; font-size: 0.72rem; font-weight: 500; opacity: 0.85; margin-top: 0.15rem;
}
.results-panel {
  background:
    radial-gradient(120% 80% at 100% 0%, rgba(46,197,255,0.12), transparent 55%),
    radial-gradient(90% 70% at 0% 100%, rgba(232,168,74,0.08), transparent 50%),
    var(--panel);
}
.demand-row { display: grid; grid-template-columns: 1fr 1fr; gap: 0.75rem; margin: 0.85rem 0 1rem; }
.demand-card {
  background: var(--sky); border: 1px solid var(--line); border-radius: 8px; padding: 0.85rem 0.9rem;
}
.demand-card .label {
  font-family: var(--mono); font-size: 0.72rem; letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--muted); margin: 0 0 0.25rem;
}
.demand-card .value {
  font-size: clamp(1.55rem, 3vw, 1.95rem); font-weight: 750; font-variant-numeric: tabular-nums;
  letter-spacing: -0.03em; margin: 0; color: var(--neon);
}
.demand-card.up .value { color: var(--warm); }
.band-chip {
  display: inline-flex; align-items: center; gap: 0.4rem; padding: 0.35rem 0.7rem;
  border-radius: 999px; font-size: 0.85rem; font-weight: 700; border: 1px solid var(--line-strong);
  background: var(--sky); margin-bottom: 0.75rem;
}
.band-chip[data-band="light"] { color: var(--ok); border-color: rgba(74,222,128,0.35); background: rgba(74,222,128,0.08); }
.band-chip[data-band="typical"] { color: var(--neon); border-color: rgba(46,197,255,0.4); background: var(--neon-soft); }
.band-chip[data-band="heavy"] { color: var(--warn); border-color: rgba(251,191,36,0.4); background: rgba(251,191,36,0.1); }
.band-chip[data-band="very-heavy"] { color: var(--heavy); border-color: rgba(251,113,133,0.4); background: rgba(251,113,133,0.1); }
.guidance { color: var(--muted); font-size: 0.95rem; margin: 0 0 1rem; }
.guidance strong { color: var(--text); }
.cta-card {
  background: var(--sky); border: 1px solid var(--line-strong); border-radius: 8px;
  padding: 1rem; margin: 0.5rem 0 0.75rem;
}
.cta-card p { margin: 0 0 0.85rem; color: var(--muted); font-size: 0.92rem; }
.cta-card .btn { width: 100%; }
.soft-note { font-size: 0.82rem; color: var(--muted); margin: 0; }
.breakdown { margin-top: 1rem; border-top: 1px solid var(--line); padding-top: 0.85rem; }
.breakdown details { margin: 0; }
.breakdown summary { cursor: pointer; color: var(--neon); font-weight: 600; font-size: 0.92rem; }
.breakdown-table { width: 100%; border-collapse: collapse; margin-top: 0.75rem; font-size: 0.85rem; }
.breakdown-table th, .breakdown-table td {
  text-align: left; padding: 0.4rem 0.35rem; border-bottom: 1px solid var(--line); color: var(--muted);
}
.breakdown-table th { color: var(--text); font-weight: 600; }
.breakdown-table td:nth-child(2), .breakdown-table td:nth-child(3),
.breakdown-table th:nth-child(2), .breakdown-table th:nth-child(3) {
  text-align: right; font-variant-numeric: tabular-nums;
}
.mobile-summary {
  display: none; position: sticky; bottom: 0; z-index: 40;
  background: rgba(14,22,36,0.95); border-top: 1px solid var(--line);
  backdrop-filter: blur(10px); padding: 0.7rem 1rem;
}
.mobile-summary-inner {
  width: min(var(--max), 100%); margin-inline: auto;
  display: flex; align-items: center; justify-content: space-between; gap: 0.75rem;
}
.mobile-summary .nums { font-family: var(--mono); font-size: 0.85rem; color: var(--text); }
.mobile-summary .nums span { color: var(--neon); font-weight: 700; }
@media (max-width: 63.99rem) { .mobile-summary { display: block; } }
.accordion { display: grid; gap: 0.55rem; }
.accordion details {
  background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 0.85rem 1rem;
}
.accordion summary { cursor: pointer; font-weight: 650; color: var(--text); }
.accordion details[open] summary { color: var(--neon); margin-bottom: 0.55rem; }
.accordion p, .accordion li { color: var(--muted); font-size: 0.95rem; }
.assumptions { width: 100%; border-collapse: collapse; font-size: 0.9rem; margin: 0.5rem 0; }
.assumptions th, .assumptions td {
  text-align: left; padding: 0.45rem 0.4rem; border-bottom: 1px solid var(--line);
}
.assumptions th { color: var(--text); }
.assumptions td { color: var(--muted); font-variant-numeric: tabular-nums; }
.card-grid { display: grid; gap: 1rem; }
.card {
  background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 1.15rem 1.2rem 1.25rem; text-decoration: none; color: inherit; display: block;
  transition: border-color 0.15s ease, background 0.15s ease;
}
a.card:hover { border-color: var(--neon); background: var(--panel-2); color: inherit; }
.card .meta {
  font-family: var(--mono); font-size: 0.75rem; color: var(--muted); letter-spacing: 0.04em; margin: 0 0 0.45rem;
}
.card h2 { margin: 0 0 0.45rem; font-size: 1.2rem; }
.card p { margin: 0; color: var(--muted); font-size: 0.95rem; }
.prose { max-width: 68ch; }
.prose p, .prose li { color: var(--muted); max-width: 68ch; }
.prose strong { color: var(--text); }
.prose h2 { margin-top: 2rem; padding-top: 0.85rem; border-top: 1px solid var(--line); }
.prose ul, .prose ol { padding-left: 1.2rem; }
.prose li + li { margin-top: 0.35rem; }
.faq details {
  background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 0.9rem 1rem; margin-bottom: 0.55rem;
}
.faq summary { cursor: pointer; font-weight: 650; }
.faq details p { color: var(--muted); margin: 0.65rem 0 0; }
.site-footer {
  border-top: 1px solid var(--line); background: var(--sky-2); padding: 2rem 0 2.4rem; margin-top: 1rem;
}
.footer-grid { display: grid; gap: 1.25rem; }
@media (min-width: 48rem) { .footer-grid { grid-template-columns: 1.4fr 1fr 1fr; } }
.site-footer h2 {
  font-size: 0.85rem; letter-spacing: 0.08em; text-transform: uppercase;
  font-family: var(--mono); color: var(--muted); margin: 0 0 0.65rem;
}
.site-footer p, .site-footer li { color: var(--muted); font-size: 0.9rem; max-width: none; }
.site-footer ul { list-style: none; margin: 0; padding: 0; }
.site-footer li + li { margin-top: 0.35rem; }
.site-footer a { color: var(--text); text-decoration: none; }
.site-footer a:hover { color: var(--neon); }
.footer-note {
  margin-top: 1.5rem; padding-top: 1rem; border-top: 1px solid var(--line);
  font-size: 0.82rem; color: var(--muted);
}
.footer-note a { color: var(--neon); text-decoration: underline; }
.center-page {
  min-height: 55vh; display: grid; place-items: center; text-align: center; padding: 3rem 1rem;
}
.center-page h1 { max-width: none; }
.muted { color: var(--muted); }
.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden;
  clip: rect(0,0,0,0); white-space: nowrap; border: 0;
}