/* Fusion Play site. Palette sampled from the Fusion Play logo and splash screen. */
:root {
  color-scheme: dark;
  --night: #121a25;      /* splash background */
  --deep: #0b1119;       /* sunken surfaces: the TV screen, inputs */
  --panel: #182231;      /* raised surfaces */
  --line: #2a3648;
  --slate: #526484;      /* logo "USION" */
  --mist: #9aa8bf;       /* secondary text */
  --paper: #e8edf5;      /* primary text */
  --violet: #8e61ee;     /* logo "F" and "PLAY": actions */
  --violet-strong: #a27df3;
  --ok: #5fd3a0;
  --bad: #ff8a8a;
  --radius-control: 10px;
  --radius-frame: 22px;
  --display: "Archivo", system-ui, sans-serif;
  --code: "IBM Plex Mono", ui-monospace, monospace;
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--night);
  color: var(--paper);
  font-family: var(--display);
  font-size: 1.0625rem;
  line-height: 1.55;
  font-stretch: 100%;
}
img { max-width: 100%; display: block; }
a { color: var(--violet-strong); text-underline-offset: 0.2em; }
a:hover { color: var(--paper); }
:focus-visible {
  outline: 2px solid var(--violet-strong);
  outline-offset: 3px;
}
[hidden] { display: none !important; }

.wrap { width: min(1120px, 100% - 32px); margin-inline: auto; }

/* Header */
.top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding-block: 20px;
}
.brand { display: inline-flex; align-items: center; gap: 12px; color: var(--paper); text-decoration: none; }
.brand:hover { color: var(--paper); }
.brand span { font-stretch: 112%; font-weight: 750; font-size: 1.25rem; letter-spacing: -0.01em; white-space: nowrap; }
.mark { width: auto; height: 30px; fill: var(--violet); flex: none; }
.top nav { display: flex; align-items: center; gap: 4px 20px; flex-wrap: wrap; justify-content: flex-end; }
.top nav a { color: var(--mist); text-decoration: none; font-weight: 600; }
.top nav a:hover, .top nav a[aria-current="page"] { color: var(--paper); }
.langs { display: flex; gap: 2px; border: 1px solid var(--line); border-radius: 999px; padding: 2px; }
.langs button {
  font: inherit; font-size: 0.8125rem; font-weight: 600; color: var(--mist);
  background: none; border: 0; border-radius: 999px; padding: 4px 10px; cursor: pointer;
}
.langs button[aria-pressed="true"] { background: var(--panel); color: var(--paper); }

/* Display type: plain white, wide and heavy like the wordmark. */
.display {
  color: #fff;
  font-stretch: 118%;
  font-weight: 780;
  letter-spacing: -0.015em;
  line-height: 1.04;
  text-wrap: balance;
}
h1.display { font-size: clamp(2.1rem, 4.3vw, 3.5rem); margin: 0 0 16px; max-width: 17ch; }
h2 { font-stretch: 112%; font-weight: 750; font-size: clamp(1.5rem, 3vw, 2rem); line-height: 1.15; margin: 0 0 20px; }
.lead { color: var(--mist); font-size: 1.1875rem; max-width: 46ch; margin: 0 0 28px; }

/* Hero: copy + form on the left, the device's settings screen on the right. */
.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  grid-template-areas: "intro screen" "form screen";
  column-gap: 64px;
  align-items: start;
  padding-block: 24px 88px;
}
.intro { grid-area: intro; }
.hero .send { grid-area: form; }
.screen-col { grid-area: screen; position: sticky; top: 24px; padding-top: 8px; }

/* The TV: a quiet bezel around the app's Settings > device info rows. */
.tv {
  border: 10px solid #05080d;
  border-bottom-width: 14px;
  border-radius: 14px;
  background: var(--deep);
  aspect-ratio: 16 / 9;
  position: relative;
  overflow: hidden;
  box-shadow: 0 40px 80px -40px #000, 0 0 0 1px var(--line);
}
.tv::after { /* stand */
  content: ""; position: absolute; left: 50%; bottom: -14px; width: 30%; height: 4px;
  transform: translateX(-50%); background: #05080d;
}
.tv-waves { position: absolute; inset: 0; width: 100%; height: 100%; opacity: 0.55; pointer-events: none; }
.tv-ui { position: relative; height: 100%; display: flex; flex-direction: column; justify-content: center; padding: 6% 8%; gap: 7%; }
.tv-head { display: flex; align-items: center; gap: 12px; color: var(--mist); font-weight: 600; font-size: clamp(0.8rem, 1.4vw, 0.95rem); }
.tv-head .mark { height: 24px; }
.tv-rows { list-style: none; margin: 0; padding: 0; display: grid; gap: 10px; }
.tv-rows li {
  display: flex; justify-content: space-between; align-items: baseline; gap: 12px;
  padding: 14px 18px; border-radius: 10px; background: color-mix(in srgb, var(--panel) 80%, transparent);
  font-size: clamp(0.85rem, 1.7vw, 1.2rem); color: var(--mist);
  transition: background-color 200ms, box-shadow 200ms;
}
.tv-rows strong { font-family: var(--code); font-weight: 500; color: var(--paper); letter-spacing: 0.02em; overflow-wrap: anywhere; text-align: right; }
.tv-rows li[data-active] { background: color-mix(in srgb, var(--violet) 28%, var(--panel)); box-shadow: inset 3px 0 0 var(--violet); }
.tv-rows li[data-active] strong { color: #fff; }
.screen-caption { color: var(--mist); font-size: 0.9375rem; margin: 22px 0 0; max-width: 42ch; }

/* Forms */
.send, .card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius-frame);
  padding: clamp(20px, 4vw, 32px);
}
.device-fields { display: grid; grid-template-columns: 1.35fr 1fr; gap: 16px; align-items: start; }
.field { display: grid; gap: 6px; margin-bottom: 18px; align-content: start; }
.field label, .legend { font-weight: 650; font-size: 0.9375rem; }
.hint { color: var(--mist); font-size: 0.875rem; margin: 0; }
.hint[data-tight="mode"] { margin: -8px 0 16px; }
input[type="text"], input[type="password"], input[type="url"] {
  font: inherit; color: var(--paper); background: var(--deep);
  border: 1px solid var(--line); border-radius: var(--radius-control);
  padding: 12px 14px; width: 100%; min-height: 48px;
}
input::placeholder { color: color-mix(in srgb, var(--mist) 60%, transparent); }
input:hover { border-color: var(--slate); }
input.code { font-family: var(--code); letter-spacing: 0.04em; }
input:focus-visible { outline-offset: 0; }

.modes { display: inline-flex; gap: 4px; padding: 4px; margin: 4px 0 20px; border-radius: 999px; background: var(--deep); border: 1px solid var(--line); }
.modes button {
  font: inherit; font-size: 0.9375rem; font-weight: 600; color: var(--mist);
  background: none; border: 0; border-radius: 999px; padding: 8px 16px; cursor: pointer;
}
.modes button[aria-checked="true"] { background: var(--violet); color: #fff; }
.check { display: inline-flex; align-items: center; gap: 8px; color: var(--mist); font-size: 0.9375rem; margin: -6px 0 18px; }
.check input { accent-color: var(--violet); width: 18px; height: 18px; }
.divider { border: 0; border-top: 1px solid var(--line); margin: 6px 0 22px; }

.button {
  font: inherit; font-weight: 700; font-size: 1.0625rem;
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  min-height: 52px; padding: 0 26px; border-radius: 999px; border: 0; cursor: pointer;
  background: var(--violet); color: #fff; text-decoration: none;
}
.button:hover { background: var(--violet-strong); color: #fff; }
.button:disabled { opacity: 0.6; cursor: progress; }
.button-wide { width: 100%; }
.button-quiet { background: transparent; color: var(--paper); border: 1px solid var(--line); min-height: 44px; padding: 0 18px; font-size: 0.9375rem; }
.button-quiet:hover { background: var(--deep); border-color: var(--slate); }
.button-quiet[data-armed] { border-color: var(--bad); color: var(--bad); }

.status { margin: 18px 0 0; padding: 14px 16px; border-radius: var(--radius-control); font-size: 0.9875rem; }
.status[data-kind="error"] { background: color-mix(in srgb, var(--bad) 12%, var(--deep)); color: #ffd0d0; box-shadow: inset 3px 0 0 var(--bad); }
.status[data-kind="success"] { background: color-mix(in srgb, var(--ok) 12%, var(--deep)); color: #d3f7e6; box-shadow: inset 3px 0 0 var(--ok); }
.status a { color: inherit; font-weight: 700; }
.status:focus { outline: none; }

/* Steps: a real sequence, so it is numbered. */
.steps { padding-block: 72px; border-top: 1px solid var(--line); }
.steps ol { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(3, 1fr); gap: 40px; counter-reset: step; }
.steps li { counter-increment: step; }
.steps li::before {
  content: counter(step);
  display: block; font-stretch: 125%; font-weight: 800; font-size: 3rem; line-height: 1; margin-bottom: 14px;
  color: var(--night); -webkit-text-stroke: 1.5px var(--slate);
}
.steps h3 { margin: 0 0 6px; font-size: 1.1875rem; font-weight: 700; }
.steps p { margin: 0; color: var(--mist); max-width: 34ch; }

/* FAQ */
.faq { padding-block: 72px; border-top: 1px solid var(--line); display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 2fr); gap: 40px; }
.faq details { border-bottom: 1px solid var(--line); }
.faq summary {
  cursor: pointer; list-style: none; font-weight: 650; padding: 18px 40px 18px 0; position: relative;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: ""; position: absolute; right: 6px; top: 50%; width: 10px; height: 10px;
  border-right: 2px solid var(--mist); border-bottom: 2px solid var(--mist);
  transform: translateY(-70%) rotate(45deg); transition: transform 200ms;
}
.faq details[open] summary::after { transform: translateY(-30%) rotate(-135deg); }
.faq details p { margin: 0 0 20px; color: var(--mist); max-width: 62ch; }

/* Manager */
.page { padding-block: 40px 96px; max-width: 760px; }
.page h1.display { max-width: none; font-size: clamp(2.2rem, 5vw, 3.6rem); }
.manage-head { display: flex; justify-content: space-between; align-items: center; gap: 12px 20px; flex-wrap: wrap; margin-bottom: 8px; }
.manage-head h2 { margin: 0; }
.manage-head h2:focus { outline: none; }
.device-id { font-family: var(--code); color: var(--mist); font-size: 0.9375rem; margin: 0 0 20px; }
.playlists { list-style: none; margin: 0 0 24px; padding: 0; }
.playlist { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 16px 0; border-top: 1px solid var(--line); }
.playlist:last-child { border-bottom: 1px solid var(--line); }
.playlist p { margin: 0; }
.playlist-name { font-weight: 700; overflow-wrap: anywhere; }
.playlist-meta { color: var(--mist); font-size: 0.9375rem; overflow-wrap: anywhere; }
.badge { font-size: 0.75rem; font-weight: 700; color: #fff; background: var(--violet); border-radius: 999px; padding: 2px 8px; vertical-align: 2px; }
.empty { color: var(--mist); padding: 20px 0; border-top: 1px solid var(--line); }
.actions { display: flex; flex-wrap: wrap; gap: 12px; }

/* Prose (privacy) */
.prose h2 { margin-top: 40px; font-size: 1.375rem; }
.prose p, .prose li { color: #c9d2e0; max-width: 68ch; }
.prose li + li { margin-top: 6px; }

/* Footer */
.foot { border-top: 1px solid var(--line); padding-block: 28px 40px; color: var(--mist); font-size: 0.9375rem; display: flex; justify-content: space-between; gap: 12px 24px; flex-wrap: wrap; }
.foot p { margin: 0; max-width: 60ch; }
.foot-links { display: flex; flex-wrap: wrap; gap: 8px 20px; }
.foot-links a { color: var(--mist); }
.foot-links a:hover { color: var(--paper); }

@media (max-width: 900px) {
  .hero { grid-template-columns: minmax(0, 1fr); grid-template-areas: "intro" "screen" "form"; padding-block: 16px 64px; }
  .screen-col { position: static; padding-top: 0; margin-bottom: 32px; }
  .steps ol { grid-template-columns: 1fr; gap: 28px; }
  .faq { grid-template-columns: 1fr; gap: 8px; }
}
@media (max-width: 560px) {
  body { font-size: 1rem; }
  .brand span { font-size: 1.0625rem; }
  .mark { height: 26px; }
  .top { align-items: flex-start; }
  .top nav a { font-size: 0.9375rem; }
  .device-fields { grid-template-columns: 1fr; gap: 0; }
  .modes { display: flex; }
  .modes button { flex: 1; padding-inline: 8px; }
  .tv { border-width: 6px; border-bottom-width: 9px; aspect-ratio: auto; }
  .tv-ui { padding: 18px 16px; gap: 14px; }
  .playlist { flex-direction: column; align-items: stretch; }
}
@media (prefers-reduced-motion: reduce) {
  .tv-rows li, .faq summary::after { transition: none; }
}
.updated { color: var(--mist); font-size: 0.9375rem; }