:root {
  --guard-overlay-bg:
    radial-gradient(
      820px 520px at 10% -10%,
      rgba(248, 113, 113, 0.2),
      transparent 65%
    ),
    radial-gradient(
      640px 420px at 90% 10%,
      rgba(190, 18, 60, 0.16),
      transparent 60%
    ),
    #fff5f5;
  --guard-overlay-text: #0b1020;
  --guard-overlay-muted: #475569;
  --guard-card-bg: #ffffff;
  --guard-card-text: #0b1020;
  --guard-card-muted: #475569;
  --guard-border: rgba(15, 23, 42, 0.14);
  --guard-accent: #b91c1c;
  --guard-card-soft: rgba(255, 255, 255, 0.7);
  --guard-section-bg: rgba(255, 255, 255, 0.7);
}

:root[data-theme="dark"] {
  --guard-overlay-bg:
    radial-gradient(
      900px 560px at 12% -12%,
      rgba(248, 113, 113, 0.22),
      transparent 65%
    ),
    radial-gradient(
      640px 420px at 92% 0%,
      rgba(190, 18, 60, 0.16),
      transparent 62%
    ),
    #060b16;
  --guard-overlay-text: #e2e8f0;
  --guard-overlay-muted: #94a3b8;
  --guard-card-bg: #0c1729;
  --guard-card-text: #e2e8f0;
  --guard-card-muted: #94a3b8;
  --guard-border: rgba(148, 163, 184, 0.2);
  --guard-accent: #f87171;
  --guard-card-soft: rgba(15, 23, 42, 0.7);
  --guard-section-bg: rgba(15, 23, 42, 0.45);
}

@font-face {
  font-family: "Roboto";
  src: url("../assets/fonts/roboto_400_latin.woff2") format("woff2");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: "Roboto";
  src: url("../assets/fonts/roboto_500_latin.woff2") format("woff2");
  font-weight: 500;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: "Roboto";
  src: url("../assets/fonts/roboto_700_latin.woff2") format("woff2");
  font-weight: 700;
  font-style: normal;
  font-display: swap;
}

body.guard-active {
  overflow: hidden !important;
  position: fixed !important;
  width: 100% !important;
  height: 100% !important;
}

.guard-overlay {
  position: fixed;
  inset: 0;
  z-index: 2147483647;
  width: 100%;
  height: 100%;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 24px;
  background: var(--guard-overlay-bg);
  color: var(--guard-overlay-text);
  font-family: "Roboto", "Segoe UI", Arial, sans-serif;
  pointer-events: none;
}

.guard-overlay:not([hidden]) {
  display: flex !important;
  pointer-events: all !important;
  visibility: visible !important;
}

.guard-overlay[hidden] {
  display: none !important;
  pointer-events: none !important;
  visibility: hidden !important;
}

.guard-card {
  max-width: 440px;
  width: min(92vw, 440px);
  background: var(--guard-card-bg);
  color: var(--guard-card-text);
  border: 1px solid var(--guard-border);
  border-radius: 20px;
  padding: 24px;
  text-align: center;
  box-shadow: 0 16px 32px rgba(0, 0, 0, 0.2);
  margin-top: 44px;
}

.guard-card h1,
.guard-card h2 {
  margin: 0 0 8px;
  font-size: 20px;
  color: inherit;
}

.guard-card p {
  margin: 0;
  font-size: 14px;
  color: var(--guard-card-muted);
}

.guard-theme-toggle {
  position: fixed !important;
  top: 16px;
  right: 16px;
  z-index: 2147483647;
  padding: 11px 18px;
  width: auto;
  max-width: 220px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  white-space: nowrap;
  border-radius: 999px;
  border: 1px solid var(--guard-border);
  background: var(--guard-card-soft);
  backdrop-filter: blur(10px);
  color: var(--guard-card-text);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.2px;
  cursor: pointer;
  box-shadow: 0 12px 24px rgba(15, 23, 42, 0.15);
  transition:
    transform 0.2s ease,
    box-shadow 0.2s ease,
    background 0.2s ease;
}

[data-theme="dark"] .guard-theme-toggle,
[data-theme="dark"] .guard-install-btn {
  background: var(--guard-card-soft) !important;
  color: var(--guard-overlay-text) !important;
  border: 1px solid var(--guard-border) !important;
}

.guard-theme-toggle:hover {
  transform: translateY(-1px);
}

.guard-content {
  display: grid;
  gap: 8px;
}

.guard-content::before {
  content: "";
  width: 48px;
  height: 4px;
  border-radius: 999px;
  background: var(--guard-accent);
  margin: 0 auto 2px;
}

.guard-overlay.guard-fullscreen {
  align-items: stretch;
  justify-content: stretch;
  padding: 0;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
}

.guard-overlay.guard-fullscreen .guard-card {
  width: 100%;
  min-height: 100%;
  height: auto;
  max-width: none;
  border-radius: 0;
  border: none;
  box-shadow: none;
  background: transparent;
  color: var(--guard-overlay-text);
  text-align: left;
  padding: 72px 24px 52px;
  margin-top: 0;
}

.guard-overlay.guard-fullscreen .guard-content::before {
  margin: 0 0 6px;
}

.guard-overlay.guard-fullscreen .guard-card p,
.guard-overlay.guard-fullscreen .guard-card li {
  color: var(--guard-overlay-muted);
}

.guard-title {
  font-size: 28px;
  margin-bottom: 8px;
  letter-spacing: 0.2px;
}

.guard-text {
  margin: 0 0 8px;
  font-size: 16px;
  line-height: 1.6;
}

.guard-install-btn {
  margin-top: 8px;
  width: fit-content;
  min-width: 220px;
  border: 1px solid var(--guard-border);
  border-radius: 12px;
  padding: 12px 16px;
  font-size: 15px;
  font-weight: 700;
  color: var(--guard-overlay-text);
  background: var(--guard-card-soft);
  cursor: pointer;
}

.guard-install-btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.guard-install-message {
  min-height: 22px;
  margin: 4px 0 0;
  font-size: 14px;
  color: var(--guard-overlay-text);
}

.guard-install-message.is-error {
  color: var(--guard-accent);
}

.guard-help {
  margin-top: 10px;
}

.guard-help summary {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding: 10px 18px;
  min-height: 40px;
  border: 1px solid var(--guard-border);
  border-radius: 999px;
  background: var(--guard-card-soft);
  cursor: pointer;
  font-size: 14px;
  font-weight: 700;
  line-height: 1;
  color: var(--guard-overlay-text);
  list-style: none;
  transition:
    background 0.2s ease,
    border-color 0.2s ease,
    transform 0.2s ease;
}

.guard-help summary:hover {
  transform: translateY(-1px);
}

.guard-help summary:active {
  transform: translateY(0);
}

.guard-help summary::-webkit-details-marker {
  display: none;
}

.guard-help summary::after {
  content: "";
  width: 8px;
  height: 8px;
  border-right: 2px solid currentColor;
  border-bottom: 2px solid currentColor;
  transform: rotate(45deg) translateY(-1px);
  margin-left: 2px;
  transition: transform 0.2s ease;
}

.guard-help[open] summary::after {
  transform: rotate(225deg) translateY(0);
}

.guard-columns {
  margin-top: 20px;
  display: grid;
  gap: 20px;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

.guard-section {
  border: 1px solid var(--guard-border);
  border-radius: 16px;
  padding: 18px;
  background: var(--guard-section-bg);
  box-shadow: 0 10px 24px rgba(15, 23, 42, 0.12);
}

.guard-section h2 {
  font-size: 19px;
  margin-bottom: 12px;
  color: var(--guard-overlay-text);
}

.guard-section ol {
  margin: 0;
  padding-left: 18px;
  font-size: 15px;
  line-height: 1.6;
}

.guard-section li {
  margin-bottom: 6px;
}