:root {
  --hubware-bg: #0f1419;
  --hubware-surface: #1a2332;
  --hubware-border: #2d3a4d;
  --hubware-text: #e8edf4;
  --hubware-muted: #8b9cb3;
  --hubware-accent: #3b82f6;
  --hubware-accent-hover: #2563eb;
  --hubware-accent-text: #ffffff;
  --hubware-badge: #1e3a5f;
  --hubware-badge-text: #93c5fd;
  --hubware-radius: 12px;
  --hubware-font: "Segoe UI", system-ui, -apple-system, sans-serif;
}

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

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  font-family: var(--hubware-font);
  background: var(--hubware-bg);
  color: var(--hubware-text);
  line-height: 1.6;
}

.page {
  flex: 1;
  max-width: 720px;
  width: 100%;
  margin: 0 auto;
  padding: 2rem 1.25rem 3rem;
}

.site-header {
  position: relative;
  text-align: center;
  margin-bottom: 2.5rem;
  padding-top: 0.25rem;
}

.help-trigger {
  position: absolute;
  top: 0;
  right: 0;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.4rem 0.65rem;
  border: 1px solid var(--hubware-border);
  border-radius: 999px;
  background: var(--hubware-surface);
  color: var(--hubware-muted);
  font-family: inherit;
  font-size: 0.85rem;
  font-weight: 500;
  cursor: pointer;
  transition: color 0.15s ease, border-color 0.15s ease, background 0.15s ease;
}

.help-trigger:hover,
.help-trigger:focus-visible {
  color: var(--hubware-text);
  border-color: var(--hubware-accent);
  background: var(--hubware-badge);
  outline: none;
}

.help-trigger-icon {
  display: block;
  flex-shrink: 0;
}

.help-popover {
  position: fixed;
  inset: auto;
  top: 1rem;
  right: 1.25rem;
  left: auto;
  width: min(420px, calc(100vw - 2.5rem));
  max-height: calc(100vh - 2rem);
  margin: 0;
  padding: 0;
  overflow: auto;
  border: 1px solid var(--hubware-border);
  border-radius: var(--hubware-radius);
  background: var(--hubware-surface);
  color: var(--hubware-text);
  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.45);
}

.help-popover::backdrop {
  background: rgba(15, 20, 25, 0.55);
}

.help-popover-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--hubware-border);
}

.help-popover-title {
  margin: 0;
  font-size: 0.95rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--hubware-muted);
}

.help-popover-close {
  appearance: none;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 1.75rem;
  height: 1.75rem;
  padding: 0;
  border: none;
  border-radius: 6px;
  background: transparent;
  color: var(--hubware-muted);
  font-size: 1.35rem;
  line-height: 1;
  cursor: pointer;
  transition: color 0.15s ease, background 0.15s ease;
}

.help-popover-close:hover,
.help-popover-close:focus-visible {
  color: var(--hubware-text);
  background: var(--hubware-border);
  outline: none;
}

.help-popover-list {
  margin: 0;
  padding: 1rem 1.25rem 1.25rem 2.25rem;
}

.help-popover-list li {
  margin-bottom: 0.65rem;
  font-size: 0.92rem;
  line-height: 1.55;
}

.help-popover-list li:last-child {
  margin-bottom: 0;
}

.help-popover-list code {
  font-size: 0.85em;
  padding: 0.1em 0.35em;
  border-radius: 4px;
  background: var(--hubware-bg);
  color: var(--hubware-badge-text);
}

.logo {
  font-size: 2rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin: 0 0 0.25rem;
}

.tagline {
  margin: 0;
  color: var(--hubware-muted);
  font-size: 1.05rem;
}

.section {
  margin-bottom: 2rem;
}

.section h2 {
  font-size: 1.1rem;
  font-weight: 600;
  margin: 0 0 0.75rem;
  color: var(--hubware-muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.firmware-filter {
  display: block;
  width: 100%;
  margin-bottom: 1rem;
  padding: 0.55rem 0.75rem;
  border: 1px solid var(--hubware-border);
  border-radius: 8px;
  background: var(--hubware-surface);
  color: var(--hubware-text);
  font-family: inherit;
  font-size: 0.92rem;
  cursor: pointer;
  transition: border-color 0.15s ease;
}

.firmware-filter:hover,
.firmware-filter:focus-visible {
  border-color: var(--hubware-accent);
  outline: none;
}

.section-prerequisites {
  margin-bottom: 2.5rem;
  padding: 0.15rem 0 0.15rem 1rem;
  border-left: 2px solid rgba(59, 130, 246, 0.35);
}

.prerequisites-label {
  margin: 0 0 0.65rem;
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--hubware-muted);
}

.prerequisites-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
}

.prerequisites-list li {
  position: relative;
  padding-left: 1.15rem;
  font-size: 0.88rem;
  line-height: 1.45;
  color: rgba(139, 156, 179, 0.95);
}

.prerequisites-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.45em;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: rgba(59, 130, 246, 0.55);
}

.prerequisites-list strong {
  color: var(--hubware-text);
  font-weight: 500;
}

.notice {
  background: var(--hubware-surface);
  border: 1px solid var(--hubware-border);
  border-radius: var(--hubware-radius);
  padding: 1rem 1.25rem;
}

.notice ul {
  margin: 0.5rem 0 0;
  padding-left: 1.25rem;
}

.notice li {
  margin-bottom: 0.35rem;
}

.notice li:last-child {
  margin-bottom: 0;
}

#catalog {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.firmware-card {
  background: var(--hubware-surface);
  border: 1px solid var(--hubware-border);
  border-radius: var(--hubware-radius);
  padding: 1.25rem 1.5rem;
}

.firmware-card-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 0.5rem;
}

.firmware-card h3 {
  margin: 0;
  font-size: 1.15rem;
  font-weight: 600;
}

.firmware-version {
  color: var(--hubware-muted);
  font-size: 0.9rem;
  font-weight: 400;
}

.copy-link-btn {
  flex-shrink: 0;
  appearance: none;
  padding: 0.25rem 0.6rem;
  border: 1px solid var(--hubware-border);
  border-radius: 999px;
  background: transparent;
  color: var(--hubware-muted);
  font-family: inherit;
  font-size: 0.75rem;
  font-weight: 500;
  cursor: pointer;
  transition: color 0.15s ease, border-color 0.15s ease, background 0.15s ease;
}

.copy-link-btn:hover,
.copy-link-btn:focus-visible {
  color: var(--hubware-text);
  border-color: var(--hubware-accent);
  background: var(--hubware-badge);
  outline: none;
}

.firmware-description {
  margin: 0 0 1.25rem;
  color: var(--hubware-muted);
  font-size: 0.95rem;
}

.install-btn {
  appearance: none;
  border: none;
  border-radius: 8px;
  padding: 0.65rem 1.25rem;
  font-size: 0.95rem;
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
  background: var(--hubware-accent);
  color: var(--hubware-accent-text);
  transition: background 0.15s ease;
}

.install-btn:hover {
  background: var(--hubware-accent-hover);
}

esp-web-install-button[slot="unsupported"],
esp-web-install-button .unsupported-msg {
  color: #f87171;
  font-size: 0.9rem;
}

.catalog-error {
  color: #f87171;
  padding: 1rem;
  background: var(--hubware-surface);
  border-radius: var(--hubware-radius);
}

.catalog-empty {
  color: var(--hubware-muted);
  text-align: center;
  padding: 2rem;
  background: var(--hubware-surface);
  border-radius: var(--hubware-radius);
  border: 1px dashed var(--hubware-border);
}

.site-footer {
  margin-top: auto;
  padding: 1rem 1.25rem 1.25rem;
  text-align: center;
  color: var(--hubware-muted);
  font-size: 0.85rem;
  background: var(--hubware-surface);
  border-top: 1px solid var(--hubware-border);
}

.site-footer p {
  margin: 0;
}

.site-footer a {
  color: var(--hubware-muted);
  text-decoration: none;
  transition: color 0.15s ease;
}

.site-footer a:hover,
.site-footer a:focus-visible {
  color: var(--hubware-accent);
  outline: none;
}