/* rdz_ttgo_sonde site styles */

:root {
  --color-bg: #050816;
  --color-surface: #0b1020;
  --color-surface-alt: #11182a;
  --color-border: #1f2739;
  --color-accent: #46c2ff;
  --color-accent-soft: rgba(70, 194, 255, 0.16);
  --color-brand: #eab308;
  --color-brand-soft: rgba(234, 179, 8, 0.25);
  --color-brand-border: rgba(234, 179, 8, 0.45);
  --color-text: #e5ecff;
  --color-text-muted: #9aa4c6;
  --color-danger: #ff6b81;
  --shadow-soft: 0 18px 40px rgba(3, 8, 23, 0.9);
  --radius-lg: 20px;
  --radius-md: 12px;
  --radius-pill: 999px;
  --nav-height: 64px;
  --container-width: 1080px;
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 40px;
  --space-2xl: 64px;
  --font-sans: system-ui, -apple-system, BlinkMacSystemFont, "SF Pro Text",
    "Segoe UI", Roboto, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, "JetBrains Mono",
    "Fira Code", monospace;
}

/* Light theme (optional) */
[data-theme="light"] {
  --color-bg: #f4f6fb;
  --color-surface: #ffffff;
  --color-surface-alt: #f0f3ff;
  --color-border: #dde2f2;
  --color-text: #111827;
  --color-text-muted: #6b7280;
  --color-brand: #ca8a04;
  --color-brand-soft: rgba(202, 138, 4, 0.2);
  --color-brand-border: rgba(202, 138, 4, 0.5);
  --shadow-soft: 0 18px 40px rgba(15, 23, 42, 0.12);
}

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

html,
body {
  margin: 0;
  padding: 0;
}

body {
  min-height: 100vh;
  font-family: var(--font-sans);
  background: radial-gradient(circle at top, #151c3b 0, #050816 55%, #020617 100%);
  color: var(--color-text);
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--color-accent);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

code,
pre,
.mono {
  font-family: var(--font-mono);
}

.page-root {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.page-shell {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 var(--space-lg) var(--space-2xl);
}

header.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(18px);
  background: linear-gradient(
    to bottom,
    rgba(5, 8, 22, 0.96),
    rgba(5, 8, 22, 0.88),
    transparent
  );
}

.site-header-inner {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: var(--space-md) var(--space-lg);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
}

.brand {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.brand-mark {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  flex-shrink: 0;
  border-radius: 10px;
  padding: 4px;
  background: var(--color-brand-soft);
  border: 1px solid var(--color-brand-border);
  box-shadow: 0 0 16px var(--color-brand-soft);
}

.brand-mark img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
}

.brand-text {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.brand-title {
  font-weight: 600;
  letter-spacing: 0.02em;
  font-size: 15px;
}

.brand-subtitle {
  font-size: 12px;
  color: var(--color-text-muted);
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--color-text);
  padding: 6px 10px;
  border-radius: var(--radius-pill);
  cursor: pointer;
}

.nav-toggle svg {
  display: block;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.site-nav a {
  font-size: 14px;
  color: var(--color-text-muted);
  padding: 6px 10px;
  border-radius: 999px;
  text-decoration: none;
  transition: background 0.18s ease, color 0.18s ease;
}

.site-nav a.nav-active {
  color: var(--color-text);
  background: rgba(15, 23, 42, 0.75);
  box-shadow: 0 0 0 1px rgba(75, 85, 99, 0.6);
}

.site-nav a:hover {
  color: var(--color-text);
  background: rgba(15, 23, 42, 0.85);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 7px 14px;
  border-radius: var(--radius-pill);
  border: 1px solid rgba(148, 163, 184, 0.5);
  background: linear-gradient(
    135deg,
    rgba(15, 23, 42, 0.95),
    rgba(15, 23, 42, 0.85)
  );
  color: var(--color-text);
  font-size: 13px;
  text-decoration: none;
  cursor: pointer;
  transition: border-color 0.18s ease, box-shadow 0.18s ease, transform 0.08s ease,
    background 0.18s ease;
}

.btn:hover {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 1px rgba(70, 194, 255, 0.65),
    0 18px 40px rgba(15, 23, 42, 0.7);
  transform: translateY(-1px);
  text-decoration: none;
}

.btn-primary {
  background: linear-gradient(135deg, #46c2ff, #4f46e5);
  border-color: transparent;
  color: #0b1120;
  font-weight: 600;
}

.btn-primary:hover {
  box-shadow: 0 0 0 1px rgba(148, 163, 184, 0.1),
    0 22px 48px rgba(37, 99, 235, 0.7);
}

.btn-ghost {
  background: transparent;
  border-color: rgba(148, 163, 184, 0.45);
}

.btn-icon {
  width: 30px;
  height: 30px;
  padding: 0;
  border-radius: 999px;
}

main {
  flex: 1 1 auto;
}

.hero {
  padding: var(--space-2xl) 0 var(--space-xl);
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.5fr) minmax(0, 1.1fr);
  gap: var(--space-xl);
  align-items: center;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border-radius: 999px;
  font-size: 11px;
  color: var(--color-text-muted);
  background: radial-gradient(circle at 0 0, rgba(70, 194, 255, 0.2), transparent),
    rgba(15, 23, 42, 0.85);
  border: 1px solid rgba(148, 163, 184, 0.45);
}

.eyebrow-dot {
  width: 7px;
  height: 7px;
  border-radius: 999px;
  background: #46c2ff;
  box-shadow: 0 0 0 6px rgba(70, 194, 255, 0.2);
}

.hero-title {
  margin: var(--space-md) 0 var(--space-sm);
  font-size: clamp(32px, 4vw, 40px);
  line-height: 1.1;
  letter-spacing: -0.03em;
}

.hero-title span.accent {
  background: linear-gradient(135deg, #46c2ff, #a855f7, #4f46e5);
  -webkit-background-clip: text;
  color: transparent;
}

.hero-lead {
  margin: 0 0 var(--space-lg);
  color: var(--color-text-muted);
  font-size: 14px;
}

.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md);
  align-items: center;
  margin-top: var(--space-md);
  font-size: 13px;
  color: var(--color-text-muted);
}

.hero-meta span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.hero-meta-dot {
  width: 6px;
  height: 6px;
  border-radius: 999px;
  background: #22c55e;
}

.hero-card {
  border-radius: var(--radius-lg);
  background: radial-gradient(circle at 0 0, rgba(70, 194, 255, 0.25), transparent),
    linear-gradient(145deg, rgba(15, 23, 42, 0.98), rgba(15, 23, 42, 0.92));
  border: 1px solid rgba(148, 163, 184, 0.4);
  box-shadow: var(--shadow-soft);
  padding: var(--space-lg);
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.hero-carousel-track {
  display: flex;
  gap: var(--space-md);
  overflow-x: auto;
  overflow-y: hidden;
  padding-bottom: 2px;
  scroll-snap-type: x mandatory;
  scroll-behavior: smooth;
  scrollbar-width: none;
  -ms-overflow-style: none;
}
.hero-carousel-track::-webkit-scrollbar {
  display: none;
}

.hero-carousel-slide {
  min-width: 200px;
  max-width: 280px;
  flex-shrink: 0;
  scroll-snap-align: start;
}

.hero-carousel-frame {
  aspect-ratio: 4 / 3;
  border-radius: var(--radius-md);
  overflow: hidden;
  background: radial-gradient(circle at 0 0, rgba(70, 194, 255, 0.16), transparent),
    rgba(15, 23, 42, 0.9);
  border: 1px solid rgba(148, 163, 184, 0.4);
}

.hero-carousel-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.hero-carousel-placeholder {
  border-radius: var(--radius-md);
  border: 1px dashed rgba(148, 163, 184, 0.6);
  background: radial-gradient(circle at 0 0, rgba(70, 194, 255, 0.16), transparent),
    rgba(15, 23, 42, 0.9);
  aspect-ratio: 4 / 3;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  color: var(--color-text-muted);
  text-align: center;
  padding: 0 var(--space-sm);
}

.hero-carousel-caption {
  margin-top: 6px;
  font-size: 12px;
  color: var(--color-text-muted);
}

.hero-card-title {
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--color-text-muted);
}

.hero-card-value {
  font-family: var(--font-mono);
  font-size: 22px;
}

.hero-card-pillrow {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 4px;
}

.pill {
  border-radius: 999px;
  border: 1px solid rgba(148, 163, 184, 0.5);
  padding: 4px 10px;
  font-size: 11px;
  color: var(--color-text-muted);
  background: rgba(10, 15, 35, 0.85);
}

.pill-accent {
  border-color: rgba(70, 194, 255, 0.7);
  color: var(--color-accent);
  background: rgba(15, 23, 42, 0.95);
}

.pill-danger {
  border-color: rgba(248, 113, 113, 0.7);
  color: #fecaca;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: var(--space-lg);
}

.card {
  border-radius: var(--radius-md);
  background: linear-gradient(145deg, rgba(15, 23, 42, 0.96), rgba(15, 23, 42, 0.9));
  border: 1px solid rgba(148, 163, 184, 0.35);
  box-shadow: 0 12px 32px rgba(15, 23, 42, 0.85);
  padding: var(--space-lg);
}

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
  margin-bottom: var(--space-sm);
}

.card-title {
  font-size: 18px;
  font-weight: 600;
  margin: 0 0 var(--space-sm);
}

.card-subtitle {
  font-size: 12px;
  color: var(--color-text-muted);
}

.card-list {
  list-style: disc;
  padding-left: 1.25rem;
  margin: 0;
  font-size: 15px;
}

.card-list li {
  padding: 2px 0;
}

.section {
  padding: var(--space-xl) 0;
}

.section-header {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: flex-end;
  gap: var(--space-md);
  margin-bottom: var(--space-lg);
}

.section-title {
  font-size: 20px;
  margin: 0;
}

.section-lead {
  margin: 4px 0 0;
  font-size: 14px;
  color: var(--color-text-muted);
}

ul.clean,
ol.clean {
  list-style: none;
  padding-left: 0;
  margin: var(--space-sm) 0;
}

ul.clean li {
  padding: 3px 0;
}

.kpi-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md);
  margin-top: var(--space-md);
}

.kpi-chip {
  flex: 0 1 auto;
  font-size: 12px;
  color: var(--color-text-muted);
  padding: 4px 10px;
  border-radius: 999px;
  background: rgba(15, 23, 42, 0.9);
  border: 1px dashed rgba(148, 163, 184, 0.4);
}

.table-scroll {
  border-radius: var(--radius-md);
  border: 1px solid rgba(148, 163, 184, 0.4);
  /* Match callout “Versioning and file system compatibility” shading */
  background: radial-gradient(circle at 0 0, rgba(70, 194, 255, 0.16), transparent),
    rgba(15, 23, 42, 0.96);
  overflow: hidden;
}

.table-scroll-inner {
  width: 100%;
  overflow-x: auto;
}

table.data-table {
  width: 100%;
  table-layout: fixed;
  border-collapse: collapse;
  font-size: 13px;
  min-width: 560px;
}

table.data-table th:nth-child(1),
table.data-table td:nth-child(1) {
  width: 28%;
}
table.data-table th:nth-child(2),
table.data-table td:nth-child(2) {
  width: 26%;
}
table.data-table th:nth-child(3),
table.data-table td:nth-child(3) {
  width: 46%;
}

table.data-table thead {
  background: rgba(15, 23, 42, 0.9);
}

table.data-table th,
table.data-table td {
  padding: 10px 12px;
  border-bottom: 1px solid rgba(30, 64, 175, 0.4);
  text-align: left;
  vertical-align: top;
}

/* No separator between version row and its changelog row (only between version blocks) */
table.data-table tbody tr:has(+ tr.download-meta-row) td {
  border-bottom: none;
}

table.data-table th {
  font-weight: 500;
  color: var(--color-text-muted);
  white-space: nowrap;
}

.download-meta {
  display: block;
  font-size: 11px;
  color: var(--color-text-muted);
  font-weight: normal;
  font-family: var(--font-sans);
}

table.data-table tbody tr.download-meta-row td {
  padding-top: 0;
  padding-bottom: 8px;
  vertical-align: top;
}

/* Stripe by version block; match callout “Versioning and file system…” box color (#173049) */
table.data-table tbody:nth-of-type(odd) tr td {
  background: #173049;
}
table.data-table tbody:nth-of-type(even) tr td {
  background: #122036;
}

/* Hover highlights whole version block (version + changelog together) */
table.data-table tbody:hover tr td {
  background: rgba(30, 64, 175, 0.5);
}

table.data-table code {
  font-size: 12px;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 11px;
  padding: 3px 8px;
  border-radius: 999px;
  border: 1px solid rgba(148, 163, 184, 0.55);
  background: rgba(15, 23, 42, 0.96);
}

.badge-stable {
  border-color: rgba(45, 212, 191, 0.5);
  color: #6ee7b7;
}

.badge-dev {
  border-color: rgba(251, 191, 36, 0.7);
  color: #fde68a;
}

/* Download table type badges: Full image = yellow, update types = green */
.badge-type-full {
  border-color: rgba(251, 191, 36, 0.7);
  color: #fde68a;
}

.badge-type-update {
  border-color: rgba(45, 212, 191, 0.5);
  color: #6ee7b7;
}

.badge-legacy {
  border-color: rgba(148, 163, 184, 0.7);
}

.callout {
  border-radius: var(--radius-md);
  border: 1px solid rgba(148, 163, 184, 0.4);
  padding: var(--space-md);
  background: radial-gradient(circle at 0 0, rgba(70, 194, 255, 0.16), transparent),
    rgba(15, 23, 42, 0.96);
  font-size: 13px;
  color: var(--color-text-muted);
}

.callout-title {
  font-weight: 500;
  margin-bottom: 4px;
  color: var(--color-text);
}

.callout-danger {
  border-color: rgba(248, 113, 113, 0.8);
}

pre {
  margin: var(--space-md) 0;
  padding: var(--space-md);
  border-radius: var(--radius-md);
  background: rgba(15, 23, 42, 0.96);
  border: 1px solid rgba(30, 64, 175, 0.7);
  font-size: 12px;
  overflow-x: auto;
  position: relative;
}

.code-block {
  position: relative;
}

.code-actions {
  position: absolute;
  top: 6px;
  right: 8px;
  display: flex;
  gap: 4px;
  z-index: 1;
}

.copy-btn {
  font-size: 11px;
  padding: 3px 8px;
}

details {
  border-radius: var(--radius-md);
  border: 1px solid rgba(148, 163, 184, 0.4);
  padding: var(--space-sm) var(--space-md);
  background: rgba(15, 23, 42, 0.94);
}

details + details {
  margin-top: var(--space-sm);
}

details summary {
  cursor: pointer;
  list-style: none;
  font-size: 13px;
}

details summary::-webkit-details-marker {
  display: none;
}

details summary::before {
  content: "›";
  display: inline-block;
  transform: rotate(90deg);
  margin-right: 6px;
  transition: transform 0.14s ease;
}

details[open] summary::before {
  transform: rotate(270deg);
}

footer.site-footer {
  border-top: 1px solid rgba(30, 64, 175, 0.7);
  padding: var(--space-lg) var(--space-lg) var(--space-xl);
  color: var(--color-text-muted);
  font-size: 12px;
  margin-top: auto;
}

.footer-inner {
  max-width: var(--container-width);
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md);
  align-items: center;
  justify-content: space-between;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md);
}

.footer-links a {
  color: var(--color-text-muted);
}

.footer-links a:hover {
  color: var(--color-accent);
  text-decoration: none;
}

@media (max-width: 900px) {
  .hero-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .hero-card {
    order: -1;
  }
}

@media (max-width: 720px) {
  .site-header-inner {
    padding-inline: var(--space-md);
  }

  .page-shell {
    padding-inline: var(--space-md);
  }

  .nav-toggle {
    display: inline-flex;
  }

  .site-nav {
    position: fixed;
    inset: var(--nav-height) var(--space-md) auto;
    border-radius: var(--radius-md);
    padding: var(--space-md);
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
    background: rgba(5, 8, 22, 0.98);
    border: 1px solid rgba(30, 64, 175, 0.8);
    box-shadow: var(--shadow-soft);
    transform-origin: top right;
    transform: scale(0.96) translateY(-8px);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.16s ease, transform 0.16s ease;
  }

  .site-nav.nav-open {
    opacity: 1;
    pointer-events: auto;
    transform: scale(1) translateY(0);
  }

  .site-nav a {
    width: 100%;
  }

  .header-actions .btn-ghost {
    display: none;
  }
}