/* OpenRV website. Colours follow the app's teal theme; light and dark follow the system. */
:root {
  --primary: #006a6a;
  --on-primary: #ffffff;
  --primary-soft: #cdeeed;
  --bg: #f4fbfa;
  --surface: #ffffff;
  --surface-2: #e8f2f1;
  --text: #161d1d;
  --muted: #4a5958;
  --border: #d3dedd;
  --ok: #1b7a3a;
  --warn: #8a5a00;
  --error: #b3261e;
  --code-bg: #e8f2f1;
  --radius: 14px;
  --shadow: 0 1px 2px rgba(0, 0, 0, 0.06), 0 4px 16px rgba(0, 0, 0, 0.05);
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root {
    --primary: #80d5d4;
    --on-primary: #003737;
    --primary-soft: #0d3a3a;
    --bg: #0e1514;
    --surface: #161e1d;
    --surface-2: #1d2726;
    --text: #dde4e3;
    --muted: #9fb0ae;
    --border: #2c3837;
    --ok: #7fd59a;
    --warn: #f0c060;
    --error: #ffb4ab;
    --code-bg: #1d2726;
    --shadow: none;
    color-scheme: dark;
  }
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.6 system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

a {
  color: var(--primary);
}

img,
svg {
  max-width: 100%;
}

code,
pre {
  font-family: ui-monospace, "Cascadia Code", Consolas, Menlo, monospace;
  font-size: 0.9em;
}

code {
  background: var(--code-bg);
  padding: 0.1em 0.35em;
  border-radius: 6px;
}

pre {
  background: var(--code-bg);
  padding: 14px 16px;
  border-radius: 10px;
  overflow-x: auto;
}

pre code {
  background: none;
  padding: 0;
}

.wrap {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 16px;
}

/* ---- Header and footer ---- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
}

.site-header .wrap {
  display: flex;
  align-items: center;
  gap: 16px;
  height: 60px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--text);
  text-decoration: none;
}

.brand img {
  display: block;
  height: 34px;
  width: auto;
}

.site-nav {
  margin-left: auto;
  display: flex;
  gap: 18px;
  flex-wrap: wrap;
}

.site-nav a {
  color: var(--muted);
  text-decoration: none;
  font-weight: 500;
}

.site-nav a:hover,
.site-nav a[aria-current="page"] {
  color: var(--text);
}

.site-footer {
  margin-top: 64px;
  padding: 32px 0 48px;
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 0.9rem;
}

.site-footer p {
  margin: 0.4em 0;
}

/* ---- Sections ---- */

.hero {
  padding: 72px 0 48px;
}

.hero h1 {
  font-size: clamp(2rem, 5vw, 3.2rem);
  line-height: 1.15;
  margin: 0 0 16px;
  letter-spacing: -0.02em;
}

.hero .lead {
  font-size: 1.2rem;
  color: var(--muted);
  max-width: 680px;
  margin: 0 0 28px;
}

section {
  padding: 40px 0;
}

section > .wrap > h2,
.page h1 {
  font-size: 1.7rem;
  margin: 0 0 8px;
  letter-spacing: -0.01em;
}

.section-intro {
  color: var(--muted);
  max-width: 720px;
  margin: 0 0 24px;
}

.buttons {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 44px;
  padding: 10px 20px;
  border-radius: 999px;
  border: 1px solid var(--primary);
  background: var(--primary);
  color: var(--on-primary);
  font: inherit;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
}

.button.secondary {
  background: transparent;
  color: var(--primary);
}

.button:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

.button:focus-visible,
a:focus-visible,
input:focus-visible,
select:focus-visible,
summary:focus-visible {
  outline: 3px solid color-mix(in srgb, var(--primary) 50%, transparent);
  outline-offset: 2px;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 16px;
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  box-shadow: var(--shadow);
}

.card h3 {
  margin: 0 0 6px;
  font-size: 1.05rem;
}

.card p {
  margin: 0;
  color: var(--muted);
}

.icon {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  display: grid;
  place-items: center;
  background: var(--primary-soft);
  color: var(--primary);
  margin-bottom: 12px;
}

.icon svg {
  width: 22px;
  height: 22px;
}

table {
  width: 100%;
  border-collapse: collapse;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}

th,
td {
  text-align: left;
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
  vertical-align: top;
}

tr:last-child td {
  border-bottom: none;
}

th {
  background: var(--surface-2);
  font-weight: 600;
}

.table-scroll {
  overflow-x: auto;
}

.muted {
  color: var(--muted);
}

.steps {
  counter-reset: step;
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 16px;
}

.steps > li {
  counter-increment: step;
  position: relative;
  padding-left: 52px;
}

.steps > li::before {
  content: counter(step);
  position: absolute;
  left: 0;
  top: 0;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--primary);
  color: var(--on-primary);
  display: grid;
  place-items: center;
  font-weight: 700;
}

.steps h3 {
  margin: 4px 0 4px;
  font-size: 1.05rem;
}

.steps p {
  margin: 0;
  color: var(--muted);
}

.diagram {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
}

.diagram svg {
  display: block;
  width: 100%;
  height: auto;
}

.diagram .box {
  fill: var(--surface-2);
  stroke: var(--border);
}

.diagram .hub {
  fill: var(--primary-soft);
  stroke: var(--primary);
}

.diagram text {
  fill: var(--text);
  font: 600 14px system-ui, sans-serif;
}

.diagram .small {
  fill: var(--muted);
  font-weight: 400;
  font-size: 12px;
}

.diagram .line {
  stroke: var(--primary);
  stroke-width: 2;
  fill: none;
  stroke-dasharray: 5 5;
}

.notice {
  border-left: 4px solid var(--warn);
  background: var(--surface);
  border-radius: 8px;
  padding: 12px 16px;
  margin: 16px 0;
}

.notice.error {
  border-left-color: var(--error);
}

.notice.ok {
  border-left-color: var(--ok);
}

.notice p {
  margin: 0.2em 0;
}

/* ---- Flasher ---- */

.page {
  padding: 40px 0;
}

.flasher {
  display: grid;
  gap: 16px;
  max-width: 760px;
}

.flasher .card h2 {
  font-size: 1.15rem;
  margin: 0 0 4px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.flasher .card h2 .num {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--primary);
  color: var(--on-primary);
  display: grid;
  place-items: center;
  font-size: 0.9rem;
}

.flasher .card > p {
  margin-top: 0;
}

.tabs {
  display: inline-flex;
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 3px;
  margin: 12px 0;
  background: var(--surface-2);
}

.tabs button {
  border: 0;
  background: transparent;
  color: var(--muted);
  font: inherit;
  font-weight: 600;
  padding: 6px 16px;
  border-radius: 999px;
  cursor: pointer;
  min-height: 36px;
}

.tabs button[aria-selected="true"] {
  background: var(--surface);
  color: var(--text);
  box-shadow: var(--shadow);
}

label {
  font-weight: 600;
}

select,
input[type="text"] {
  font: inherit;
  color: var(--text);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 8px 12px;
  min-height: 44px;
  width: 100%;
}

input[type="file"] {
  font: inherit;
  max-width: 100%;
}

.field {
  display: grid;
  gap: 6px;
  margin: 12px 0;
}

.facts {
  display: grid;
  grid-template-columns: max-content 1fr;
  gap: 4px 16px;
  margin: 12px 0 0;
}

.facts dt {
  color: var(--muted);
}

.facts dd {
  margin: 0;
  overflow-wrap: anywhere;
}

details summary {
  cursor: pointer;
  font-weight: 600;
  min-height: 32px;
}

.status {
  font-weight: 600;
}

.status.ok {
  color: var(--ok);
}

.status.warn {
  color: var(--warn);
}

.status.error {
  color: var(--error);
}

[hidden] {
  display: none !important;
}

@media (max-width: 640px) {
  .site-header .wrap {
    height: auto;
    padding-top: 10px;
    padding-bottom: 10px;
    flex-wrap: wrap;
  }

  .site-nav {
    margin-left: 0;
    gap: 14px;
  }

  .hero {
    padding: 40px 0 24px;
  }

  th,
  td {
    padding: 10px 12px;
  }
}

.check {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  font-weight: 400;
  margin: 12px 0;
}

.check input {
  width: 20px;
  height: 20px;
  margin-top: 3px;
}

/* What the chosen firmware needs, against what the board has. */
.checks {
  list-style: none;
  padding: 0;
  margin: 12px 0 0;
  display: grid;
  gap: 6px;
}

.checks li {
  display: grid;
  grid-template-columns: 24px 1fr;
  gap: 8px;
}

.checks .mark {
  font-weight: 700;
  text-align: center;
}

.checks .pass .mark {
  color: var(--ok);
}

.checks .fail .mark {
  color: var(--error);
}

.checks .note .mark {
  color: var(--warn);
}

progress {
  width: 100%;
  height: 14px;
  accent-color: var(--primary);
}

.log {
  background: var(--code-bg);
  border-radius: 10px;
  padding: 12px;
  max-height: 260px;
  overflow: auto;
  white-space: pre-wrap;
  font: 12px/1.5 ui-monospace, Consolas, Menlo, monospace;
  margin: 0;
}

.setup {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  align-items: center;
  margin: 12px 0;
}

.setup-qr {
  background: #fff; /* QR codes need a light background, even in dark mode */
  padding: 8px;
  border-radius: 10px;
  line-height: 0;
}

.setup-qr svg {
  width: 200px;
  height: 200px;
}

.setup-code {
  font: 600 20px/1.3 ui-monospace, Consolas, Menlo, monospace;
  letter-spacing: 0.08em;
}

@media print {
  .site-header,
  .site-footer,
  .section-intro,
  .flasher > :not(.setup-card),
  .page > .wrap > :not(.flasher),
  .no-print {
    display: none !important;
  }

  .setup-card {
    border: 1px solid #000;
    box-shadow: none;
  }
}