/* maximumresonance.com: the app's palette (App.axaml) and the tuner's colours (TuningPalette) */
:root {
  color-scheme: dark;
  --page: #1e1e2e;
  --card: #2d2d44;
  --track: #2a2a4a;
  --text: #ffffff;
  --secondary: #a0a0b0;
  --primary: #512bd4;
  --primary-hover: #6440e0;
  --accent: #c9d2ff;
  --flat: #ef4444;
  --in-tune: #22c55e;
  --sharp: #f59e0b;
  --line: #3d3d5c;
  --radius: 14px;
  --gutter: 16px;
  --measure: 1040px;
}
/* The site is dark only, like the app */
@media (prefers-color-scheme: dark) { :root:not([data-theme="light"]) { color-scheme: dark; } }
:root[data-theme="dark"] { color-scheme: dark; }

*, *::before, *::after { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--page);
  color: var(--text);
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  font-size: 17px;
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

a { color: var(--accent); text-underline-offset: 3px; }
a:hover { color: #fff; }

.wrap { width: 100%; max-width: var(--measure); margin: 0 auto; padding: 0 var(--gutter); }

/* Header */
.site-header { border-bottom: 1px solid var(--line); }
.site-header .wrap { display: flex; align-items: center; justify-content: space-between; gap: 16px; min-height: 64px; flex-wrap: wrap; }
.brand { display: flex; align-items: center; gap: 10px; color: var(--text); text-decoration: none; font-weight: 650; font-size: 18px; letter-spacing: 0.01em; }
.brand img { width: 30px; height: 30px; flex: none; display: block; }
.nav { display: flex; gap: 4px; flex-wrap: wrap; }
.nav a { color: var(--secondary); text-decoration: none; padding: 10px 12px; border-radius: 10px; font-size: 16px; }
.nav a:hover, .nav a[aria-current="page"] { color: var(--text); background: var(--card); }

main { flex: 1; }

/* Hero */
.hero { padding: 72px 0 56px; text-align: center; }
.hero h1 { font-size: clamp(36px, 7vw, 60px); line-height: 1.08; margin: 0 0 18px; letter-spacing: -0.02em; font-weight: 750; }
.hero .lede { font-size: clamp(18px, 2.4vw, 22px); color: var(--secondary); max-width: 680px; margin: 0 auto 32px; }
.status { display: inline-flex; align-items: center; gap: 8px; font-size: 14px; color: var(--accent); background: var(--card); border-radius: 999px; padding: 6px 14px; margin-bottom: 26px; }
.status::before { content: ""; width: 8px; height: 8px; border-radius: 50%; background: var(--in-tune); box-shadow: 0 0 10px var(--in-tune); }
.actions { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }

.button { display: inline-flex; align-items: center; justify-content: center; min-height: 48px; padding: 0 22px; border-radius: 12px; font-weight: 600; font-size: 16px; text-decoration: none; border: 0; cursor: pointer; font-family: inherit; }
.button.primary { background: var(--primary); color: #fff; }
.button.primary:hover { background: var(--primary-hover); color: #fff; }
.button.quiet { background: var(--card); color: var(--accent); }
.button.quiet:hover { color: #fff; }

/* The meter: a needle settling into tune */
.meter { max-width: 520px; margin: 0 auto 40px; }
.meter svg { width: 100%; height: auto; display: block; }
.meter .needle { transform-origin: 260px 150px; animation: settle 4.5s cubic-bezier(.3, .6, .2, 1) 0.3s both; }
.meter .glow { animation: glow 4.5s ease-out 0.3s both; }
@keyframes settle {
  0% { transform: rotate(-38deg); }
  22% { transform: rotate(24deg); }
  42% { transform: rotate(-12deg); }
  60% { transform: rotate(6deg); }
  76% { transform: rotate(-2deg); }
  100% { transform: rotate(0deg); }
}
@keyframes glow { 0%, 70% { opacity: 0; } 100% { opacity: 1; } }
@media (prefers-reduced-motion: reduce) {
  .meter .needle, .meter .glow { animation: none; }
}

/* Sections */
section { padding: 48px 0; }
.section-title { font-size: clamp(26px, 4vw, 34px); margin: 0 0 10px; letter-spacing: -0.01em; }
.section-lede { color: var(--secondary); max-width: 700px; margin: 0 0 32px; }

.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 16px; }
.card { background: var(--card); border-radius: var(--radius); padding: 24px; border-top: 3px solid var(--tone, var(--primary)); }
.card h3 { margin: 0 0 8px; font-size: 20px; }
.card p { margin: 0; color: var(--secondary); }
.card.flat { --tone: var(--flat); }
.card.in-tune { --tone: var(--in-tune); }
.card.sharp { --tone: var(--sharp); }

.band { background: var(--card); border-radius: var(--radius); padding: 32px; display: flex; gap: 24px; align-items: center; justify-content: space-between; flex-wrap: wrap; }
.band h2 { margin: 0 0 6px; font-size: 26px; }
.band p { margin: 0; color: var(--secondary); max-width: 560px; }

/* Text pages */
.page { padding: 56px 0 64px; }
.page .wrap { max-width: 760px; }
.page h1 { font-size: clamp(32px, 5vw, 44px); margin: 0 0 8px; letter-spacing: -0.015em; }
.page h2 { font-size: 22px; margin: 36px 0 8px; }
.page p, .page li { color: #d6d6e2; }
.page .muted { color: var(--secondary); }
.page ul { padding-left: 22px; }

/* The preview sign-in */
.portal { max-width: 460px; margin: 0 auto; background: var(--card); border-radius: var(--radius); padding: 32px 28px; }
.portal h1 { font-size: 28px; margin: 0 0 6px; }
.portal p { color: var(--secondary); margin: 0 0 22px; }
.portal label { display: block; font-weight: 600; margin-bottom: 8px; }
.portal input { width: 100%; min-height: 52px; border-radius: 12px; border: 1px solid var(--line); background: var(--page); color: var(--text); font: inherit; font-size: 20px; letter-spacing: 0.12em; padding: 0 16px; text-transform: uppercase; }
.portal input:focus { outline: 2px solid var(--primary); outline-offset: 1px; border-color: transparent; }
.portal .button { width: 100%; margin-top: 16px; }
.portal .button[disabled] { opacity: 0.6; cursor: default; }
.message { min-height: 0; margin: 0 0 16px; border-radius: 10px; padding: 0; font-size: 15px; }
.message:not(:empty) { padding: 12px 14px; }
.message.error { background: rgba(239, 68, 68, 0.14); color: #ffb4b4; }
.message.info { background: rgba(201, 210, 255, 0.10); color: var(--accent); }

/* Footer */
.site-footer { border-top: 1px solid var(--line); padding: 28px 0; color: var(--secondary); font-size: 14px; }
.site-footer .wrap { display: flex; gap: 12px 24px; justify-content: space-between; flex-wrap: wrap; }
.site-footer nav { display: flex; gap: 18px; flex-wrap: wrap; }
.site-footer a { color: var(--secondary); }
.site-footer a:hover { color: var(--text); }

@media (max-width: 560px) {
  .hero { padding: 48px 0 40px; }
  .band { padding: 24px; }
  .nav a { padding: 10px 8px; }
}