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

:root {
  --bg: #080808;
  --bg2: #0f0f0f;
  --bg3: #151515;
  --surface: #1a1a1a;
  --border: rgba(59, 130, 246, 0.22);
  --border-soft: rgba(255, 255, 255, 0.08);
  --blue: #3B82F6;
  --cyan: #22D3EE;
  --green: #10B981;
  --red: #EF4444;
  --amber: #F59E0B;
  --text: #F0F0F0;
  --text2: #A0A0A0;
  --text3: #5B5B5B;
  --font-display: 'Bebas Neue', sans-serif;
  --font-ui: 'Rajdhani', sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
}

body.vgs-install-body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-ui);
  font-size: 16px;
  line-height: 1.6;
}

body.vgs-install-body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 1000;
  pointer-events: none;
  opacity: 0.025;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='1'/%3E%3C/svg%3E");
}

a { color: inherit; }

.install-nav {
  position: sticky;
  top: 0;
  z-index: 50;
  min-height: 64px;
  padding: 0 3rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  background: rgba(8, 8, 8, 0.92);
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(18px);
}

.install-logo {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  color: #fff;
  text-decoration: none;
  font-family: var(--font-display);
  font-size: 1.6rem;
  letter-spacing: 0.15em;
}

.install-logo span {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--blue);
  box-shadow: 0 0 14px var(--blue);
}

.install-nav-links {
  display: flex;
  align-items: center;
  gap: 1.4rem;
  flex-wrap: wrap;
}

.install-nav-links a,
.install-nav-cta {
  color: var(--text2);
  text-decoration: none;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.install-nav-links a:hover { color: var(--blue); }

.install-nav-cta,
.installer-cta {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--blue);
  background: var(--blue);
  color: #000;
  padding: 0.82rem 1.25rem;
  cursor: pointer;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  text-decoration: none;
  transition: transform 0.2s, box-shadow 0.2s;
}

.install-nav-cta:hover,
.installer-cta:hover {
  transform: translateY(-1px);
  box-shadow: 0 0 30px rgba(59, 130, 246, 0.38);
}

.install-page {
  position: relative;
  overflow: hidden;
}

.install-page::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 620px;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(59,130,246,0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(59,130,246,0.045) 1px, transparent 1px);
  background-size: 58px 58px;
  mask-image: radial-gradient(ellipse 74% 70% at 50% 8%, black 12%, transparent 78%);
}

.install-hero,
.install-section {
  position: relative;
  width: min(1180px, calc(100% - 2.4rem));
  margin: 0 auto;
}

.install-hero {
  padding: 7.5rem 0 3rem;
}

.section-tag {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  margin-bottom: 1rem;
  color: var(--blue);
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
}

.section-tag::before {
  content: "";
  width: 22px;
  height: 1px;
  background: var(--blue);
}

.install-hero h1 {
  max-width: 860px;
  margin: 0;
  color: #fff;
  font-family: var(--font-display);
  font-size: clamp(4rem, 10vw, 8rem);
  line-height: 0.9;
  letter-spacing: 0.05em;
}

.install-hero p {
  max-width: 720px;
  margin: 1.5rem 0 0;
  color: var(--text2);
  font-size: 1.12rem;
}

.hero-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-top: 2rem;
}

.hero-strip span {
  border: 1px solid var(--border-soft);
  background: rgba(255, 255, 255, 0.025);
  padding: 0.45rem 0.7rem;
  color: var(--text2);
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.install-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(300px, 0.8fr);
  gap: 1.2rem;
  align-items: start;
  padding: 0 0 5rem;
}

.install-panel {
  border: 1px solid var(--border);
  border-radius: 6px;
  background:
    linear-gradient(180deg, rgba(59, 130, 246, 0.045), transparent 220px),
    var(--bg2);
  overflow: hidden;
}

.install-main {
  min-width: 0;
}

.panel-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem 1.25rem;
  background: var(--bg3);
  border-bottom: 1px solid var(--border);
}

.panel-head span,
.panel-head strong {
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.panel-head span { color: var(--blue); }
.panel-head strong { color: var(--text2); }
.panel-head strong.ready { color: var(--green); }
.panel-head strong.error { color: var(--red); }

.firmware-readout {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  margin: 1.25rem;
  border: 1px solid var(--border);
  background: var(--border);
}

.firmware-readout > div {
  min-width: 0;
  background: var(--bg);
  padding: 1rem;
}

.readout-label {
  display: block;
  margin-bottom: 0.35rem;
  color: var(--text3);
  font-family: var(--font-mono);
  font-size: 0.58rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.firmware-readout strong {
  display: block;
  min-width: 0;
  color: #fff;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  overflow-wrap: anywhere;
}

.install-alert {
  margin: 0 1.25rem 1rem;
  min-height: 44px;
  border: 1px solid var(--border-soft);
  background: rgba(255, 255, 255, 0.025);
  padding: 0.75rem 0.9rem;
  color: var(--text2);
  font-family: var(--font-mono);
  font-size: 0.72rem;
}

.install-alert.good {
  border-color: rgba(16, 185, 129, 0.28);
  color: var(--green);
}

.install-alert.warn {
  border-color: rgba(245, 158, 11, 0.32);
  color: var(--amber);
}

.install-alert.error {
  border-color: rgba(239, 68, 68, 0.32);
  color: var(--red);
}

.install-action {
  margin: 0 1.25rem 1.25rem;
}

esp-web-install-button {
  --esp-tools-button-color: var(--blue);
  --esp-tools-button-text-color: #000;
  --esp-tools-button-border-radius: 0;
}

.installer-cta {
  width: 100%;
  min-height: 58px;
  font-size: 0.78rem;
}

.slot-message {
  display: block;
  border: 1px solid rgba(245, 158, 11, 0.3);
  background: rgba(245, 158, 11, 0.08);
  color: var(--amber);
  padding: 0.85rem 1rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
}

.release-box {
  padding: 0 1.25rem 1.25rem;
}

.release-box h2 {
  margin: 0 0 0.7rem;
  color: #fff;
  font-size: 1.2rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

#releaseNotes {
  display: grid;
  gap: 0.45rem;
  color: var(--text2);
}

#releaseNotes p {
  margin: 0;
}

.install-steps {
  display: grid;
  gap: 0;
  margin: 0;
  padding: 0;
  list-style: none;
}

.install-steps li {
  position: relative;
  padding: 1rem 1.25rem 1rem 3.25rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.install-steps li::before {
  content: counter(list-item);
  position: absolute;
  left: 1.25rem;
  top: 1.1rem;
  width: 1.25rem;
  height: 1.25rem;
  display: grid;
  place-items: center;
  border: 1px solid var(--blue);
  color: var(--blue);
  font-family: var(--font-mono);
  font-size: 0.62rem;
}

.install-steps strong {
  display: block;
  color: #fff;
  font-size: 1rem;
}

.install-steps span {
  display: block;
  margin-top: 0.2rem;
  color: var(--text2);
  font-size: 0.92rem;
}

.install-notes {
  padding: 0 0 6rem;
}

.note-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  border: 1px solid var(--border);
  background: var(--border);
}

.note-grid p {
  margin: 0;
  min-height: 150px;
  background: var(--bg2);
  padding: 1.1rem;
  color: var(--text2);
}

.note-grid strong {
  display: block;
  margin-bottom: 0.35rem;
  color: #fff;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

code {
  color: var(--cyan);
  font-family: var(--font-mono);
  font-size: 0.84em;
}

@media (max-width: 920px) {
  .install-nav {
    align-items: flex-start;
    flex-direction: column;
    padding: 0.9rem 1.2rem;
  }

  .install-grid,
  .note-grid {
    grid-template-columns: 1fr;
  }

  .firmware-readout {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  .install-hero,
  .install-section {
    width: min(100% - 1.2rem, 1180px);
  }

  .install-hero {
    padding-top: 4.5rem;
  }

  .install-nav-links {
    gap: 0.85rem;
  }

  .install-nav-cta,
  .installer-cta {
    width: 100%;
  }

  .hero-strip span {
    width: 100%;
  }
}