:root {
  --guard-overlay-bg:
    radial-gradient(
      900px 560px at 12% -8%,
      rgba(255, 255, 255, 0.9),
      transparent 62%
    ),
    radial-gradient(
      720px 480px at 88% 0%,
      rgba(203, 213, 225, 0.45),
      transparent 58%
    ),
    linear-gradient(165deg, #f8f9fb 0%, #eef1f4 48%, #e5e7eb 100%);
  --guard-overlay-text: #1f2937;
  --guard-overlay-muted: #6b7280;
  --guard-card-bg: rgba(255, 255, 255, 0.92);
  --guard-card-text: #111827;
  --guard-card-muted: #6b7280;
  --guard-border: rgba(17, 24, 39, 0.1);
  --guard-accent: #4b5563;
  --guard-accent-soft: rgba(75, 85, 99, 0.1);
  --guard-accent-border: rgba(75, 85, 99, 0.18);
  --guard-accent-glow: rgba(17, 24, 39, 0.12);
  --guard-btn-bg: linear-gradient(135deg, #52525b 0%, #27272a 100%);
  --guard-btn-bg-hover: linear-gradient(135deg, #71717a 0%, #3f3f46 100%);
  --guard-btn-text: #fafafa;
  --guard-card-soft: rgba(249, 250, 251, 0.88);
  --guard-section-bg: rgba(243, 244, 246, 0.72);
  --guard-shadow:
    0 24px 60px rgba(15, 23, 42, 0.08),
    0 1px 0 rgba(255, 255, 255, 0.95) inset;
}

:root[data-theme="dark"] {
  --guard-overlay-bg:
    radial-gradient(
      900px 620px at 10% -10%,
      rgba(255, 255, 255, 0.04),
      transparent 62%
    ),
    radial-gradient(
      760px 520px at 90% 0%,
      rgba(161, 161, 170, 0.08),
      transparent 58%
    ),
    linear-gradient(165deg, #18181b 0%, #27272a 52%, #1f1f23 100%);
  --guard-overlay-text: #f4f4f5;
  --guard-overlay-muted: #a1a1aa;
  --guard-card-bg: rgba(39, 39, 42, 0.88);
  --guard-card-text: #fafafa;
  --guard-card-muted: #a1a1aa;
  --guard-border: rgba(255, 255, 255, 0.1);
  --guard-accent: #d4d4d8;
  --guard-accent-soft: rgba(255, 255, 255, 0.06);
  --guard-accent-border: rgba(255, 255, 255, 0.12);
  --guard-accent-glow: rgba(0, 0, 0, 0.28);
  --guard-btn-bg: linear-gradient(135deg, #71717a 0%, #52525b 100%);
  --guard-btn-bg-hover: linear-gradient(135deg, #a1a1aa 0%, #71717a 100%);
  --guard-btn-text: #fafafa;
  --guard-card-soft: rgba(24, 24, 27, 0.72);
  --guard-section-bg: rgba(9, 9, 11, 0.42);
  --guard-shadow:
    0 28px 70px rgba(0, 0, 0, 0.35),
    0 1px 0 rgba(255, 255, 255, 0.06) inset;
}

@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;
  box-sizing: border-box;
  padding:
    max(20px, env(safe-area-inset-top, 0px))
    max(20px, env(safe-area-inset-right, 0px))
    max(20px, env(safe-area-inset-bottom, 0px))
    max(20px, env(safe-area-inset-left, 0px));
  background: var(--guard-overlay-bg);
  color: var(--guard-overlay-text);
  font-family: "Roboto", "Segoe UI", Arial, sans-serif;
  pointer-events: none;
  overflow-x: hidden;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
}

.guard-overlay::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.025) 1px, transparent 1px);
  background-size: 28px 28px;
  mask-image: radial-gradient(circle at center, black 30%, transparent 100%);
  opacity: 0.22;
}

.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 {
  position: relative;
  z-index: 1;
  box-sizing: border-box;
  width: 100%;
  max-width: 480px;
  background: var(--guard-card-bg);
  color: var(--guard-card-text);
  border: 1px solid var(--guard-border);
  border-radius: 24px;
  padding: 28px 24px 24px;
  text-align: center;
  box-shadow: var(--guard-shadow);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  animation: guard-card-in 0.45s cubic-bezier(0.22, 1, 0.36, 1);
}

@keyframes guard-card-in {
  from {
    opacity: 0;
    transform: translateY(18px) scale(0.98);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

.guard-card h1,
.guard-card h2 {
  margin: 0;
  color: inherit;
}

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

.guard-theme-toggle {
  position: fixed !important;
  top: 16px;
  right: 16px;
  z-index: 2147483647;
  padding: 10px 16px;
  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(14px);
  -webkit-backdrop-filter: blur(14px);
  color: var(--guard-overlay-text);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.01em;
  cursor: pointer;
  box-shadow: 0 8px 20px var(--guard-accent-glow);
  transition:
    transform 0.2s ease,
    box-shadow 0.2s ease,
    background 0.2s ease,
    border-color 0.2s ease;
}

.guard-theme-toggle:hover {
  transform: translateY(-1px);
  box-shadow: 0 12px 24px var(--guard-accent-glow);
  border-color: var(--guard-accent-border);
}

.guard-content {
  display: grid;
  gap: 14px;
  text-align: center;
  width: 100%;
  min-width: 0;
  box-sizing: border-box;
}

.guard-hero {
  display: grid;
  justify-items: center;
  gap: 12px;
}

.guard-icon {
  width: 72px;
  height: 72px;
  border-radius: 20px;
  display: block;
  overflow: hidden;
  padding: 0;
  border: 1px solid var(--guard-accent-border);
  box-shadow:
    0 14px 28px var(--guard-accent-glow),
    0 1px 0 rgba(255, 255, 255, 0.08) inset;
  background: var(--guard-card-soft);
}

.guard-icon-logo {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

.guard-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 12px;
  border-radius: 999px;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--guard-accent);
  background: var(--guard-accent-soft);
  border: 1px solid var(--guard-accent-border);
}

.guard-badge::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--guard-accent);
  box-shadow: 0 0 0 3px var(--guard-accent-soft);
}

.guard-overlay.guard-fullscreen {
  align-items: center;
  justify-content: center;
}

.guard-overlay.guard-fullscreen .guard-card {
  width: 100%;
  min-height: auto;
  height: auto;
  max-width: 480px;
  border-radius: 24px;
  border: 1px solid var(--guard-border);
  box-shadow: var(--guard-shadow);
  background: var(--guard-card-bg);
  color: var(--guard-card-text);
  text-align: center;
  padding: 28px 24px 24px;
  margin-top: 0;
}

.guard-title {
  font-size: clamp(1.45rem, 5vw, 1.75rem);
  line-height: 1.2;
  letter-spacing: -0.015em;
  font-weight: 600;
}

.guard-text {
  margin: 0 auto;
  max-width: 34ch;
  font-size: 15px;
  line-height: 1.65;
  color: var(--guard-card-muted);
}

.guard-actions {
  display: grid;
  gap: 10px;
  justify-items: center;
  margin-top: 4px;
}

.guard-install-btn {
  position: relative;
  width: 100%;
  max-width: 320px;
  border: 1px solid var(--guard-accent-border);
  border-radius: 14px;
  padding: 15px 20px;
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.01em;
  color: var(--guard-btn-text);
  background: var(--guard-btn-bg);
  cursor: pointer;
  box-shadow:
    0 12px 24px var(--guard-accent-glow),
    0 1px 0 rgba(255, 255, 255, 0.1) inset;
  transition:
    transform 0.2s ease,
    box-shadow 0.2s ease,
    background 0.2s ease,
    border-color 0.2s ease;
}

.guard-install-btn:hover:not(:disabled) {
  transform: translateY(-1px);
  background: var(--guard-btn-bg-hover);
  box-shadow:
    0 16px 30px var(--guard-accent-glow),
    0 1px 0 rgba(255, 255, 255, 0.14) inset;
}

.guard-install-btn:active:not(:disabled) {
  transform: translateY(0);
}

.guard-install-btn:disabled {
  opacity: 0.45;
  cursor: not-allowed;
  filter: none;
  box-shadow: none;
}

.guard-install-btn-label {
  display: inline-block;
}

.guard-install-message {
  min-height: 20px;
  margin: 0;
  font-size: 13px;
  line-height: 1.5;
  color: var(--guard-card-muted);
}

.guard-install-message.is-error {
  color: #71717a;
}

:root[data-theme="dark"] .guard-install-message.is-error {
  color: #d4d4d8;
}

.guard-help {
  margin-top: 6px;
  text-align: left;
  border: 1px solid var(--guard-border);
  border-radius: 16px;
  background: var(--guard-section-bg);
  overflow: hidden;
  width: 100%;
  box-sizing: border-box;
}

.guard-help summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 14px 16px;
  cursor: pointer;
  font-size: 13px;
  font-weight: 600;
  line-height: 1.3;
  color: var(--guard-card-text);
  list-style: none;
  transition: background 0.2s ease;
  min-width: 0;
}

.guard-help-summary-label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-width: 0;
}

.guard-help-expand {
  color: var(--guard-card-muted);
  font-weight: 500;
  white-space: nowrap;
}

.guard-help[open] .guard-help-expand {
  display: none;
}

.guard-help summary:hover {
  background: var(--guard-accent-soft);
}

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

.guard-help summary::after {
  content: "";
  flex: 0 0 auto;
  width: 8px;
  height: 8px;
  border-right: 2px solid currentColor;
  border-bottom: 2px solid currentColor;
  transform: rotate(45deg) translateY(-1px);
  opacity: 0.7;
  transition: transform 0.2s ease;
}

.guard-help[open] summary::after {
  transform: rotate(225deg) translateY(1px);
}

.guard-help-lead {
  padding: 0 16px 14px;
  font-size: 13px;
  line-height: 1.55;
  color: var(--guard-card-muted);
  border-top: 1px solid var(--guard-border);
}

.guard-columns {
  display: grid;
  gap: 12px;
  padding: 0 12px 12px;
  grid-template-columns: 1fr;
}

.guard-section {
  border: 1px solid var(--guard-border);
  border-radius: 14px;
  padding: 16px;
  background: var(--guard-card-soft);
}

.guard-platform {
  display: inline-flex;
  margin-bottom: 8px;
  padding: 4px 10px;
  border-radius: 999px;
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--guard-accent);
  background: var(--guard-accent-soft);
  border: 1px solid var(--guard-accent-border);
}

.guard-section h2 {
  font-size: 16px;
  margin-bottom: 10px;
  color: var(--guard-card-text);
  font-weight: 600;
}

.guard-section ol {
  margin: 0;
  padding-left: 18px;
  font-size: 14px;
  line-height: 1.65;
  color: var(--guard-card-muted);
}

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

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

@media (min-width: 640px) {
  .guard-overlay {
    padding:
      max(28px, env(safe-area-inset-top, 0px))
      max(28px, env(safe-area-inset-right, 0px))
      max(28px, env(safe-area-inset-bottom, 0px))
      max(28px, env(safe-area-inset-left, 0px));
  }

  .guard-card,
  .guard-overlay.guard-fullscreen .guard-card {
    padding: 32px 28px 24px;
  }

  .guard-columns {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

.guard-overlay.guard-desktop-blocked {
  align-items: stretch;
  justify-content: stretch;
  padding: 0;
  background: #fff;
}

.guard-overlay.guard-desktop-blocked::before {
  display: none;
}

.guard-overlay.guard-desktop-blocked .guard-card {
  width: 100%;
  max-width: none;
  min-height: 100vh;
  margin: 0;
  padding: 0;
  border: none;
  border-radius: 0;
  box-shadow: none;
  background: #fff;
  color: #404040;
  text-align: left;
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
  animation: none;
}

@media (prefers-reduced-motion: reduce) {
  .guard-card {
    animation: none;
  }

  .guard-install-btn,
  .guard-theme-toggle,
  .guard-help summary {
    transition: none;
  }
}