:root {
  color-scheme: dark;
  --bg: #0b0d12;
  --bg-soft: #121621;
  --text: #e8edf7;
  --muted: #9ba8c7;
  --accent: #6ea8fe;
  --accent-strong: #8bb8ff;
  --border: #273047;
  --shadow: 0 18px 48px rgba(0, 0, 0, 0.4);
}

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

html {
  margin: 0;
  min-height: 100%;
  background: var(--bg);
}

html,
body.content-protected,
body.content-protected * {
  -webkit-touch-callout: none;
  -webkit-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
  user-select: none;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: radial-gradient(circle at top, #151a29 0%, var(--bg) 45%);
  color: var(--text);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: clamp(16px, 4vw, 32px);
  position: relative;
  overflow-x: hidden;
}

body::before {
  content: "";
  position: fixed;
  inset: -20%;
  pointer-events: none;
  background: radial-gradient(circle at 10% 0%, rgba(72, 199, 255, 0.08) 0%, transparent 55%),
    radial-gradient(circle at 90% 120%, rgba(110, 168, 254, 0.06) 0%, transparent 55%);
  opacity: 0.9;
  z-index: 0;
  animation: bg-drift 32s ease-in-out infinite alternate;
}

.page {
  position: relative;
  z-index: 1;
  width: min(680px, 100%);
  display: grid;
  gap: 18px;
}

.container {
  width: 100%;
  text-align: center;
  background-color: rgba(18, 22, 33, 0.88);
  border: 1px solid var(--border);
  border-radius: 24px;
  padding: clamp(24px, 5vw, 40px);
  box-shadow: var(--shadow);
  animation: card-enter 420ms ease-out;
}

@supports (background: color-mix(in srgb, black 50%, white)) {
  .container {
    background: color-mix(in srgb, var(--bg-soft) 85%, transparent);
  }
}

.logo {
  width: min(350px, 60vw);
  height: auto;
  display: block;
  margin: 0 auto;
  filter: drop-shadow(0 0 18px rgba(0, 190, 255, 0.6));
  transition: transform 0.25s ease, filter 0.25s ease;
  -webkit-user-drag: none;
}

.logo:hover {
  transform: translateY(-4px) scale(1.02);
  filter: drop-shadow(0 0 26px rgba(0, 220, 255, 0.9));
}

.badge {
  margin: 0 0 16px;
  letter-spacing: 0.14em;
  font-size: 0.78rem;
  color: var(--muted);
  text-transform: uppercase;
  animation: badge-pulse 11s ease-in-out infinite;
}

h1 {
  margin: 0;
  font-size: clamp(2rem, 4vw, 3rem);
  line-height: 1.1;
}

.lead {
  margin: 16px auto 0;
  max-width: 28ch;
  font-size: clamp(1.05rem, 2vw, 1.2rem);
  color: var(--text);
  line-height: 1.5;
}

.subtitle {
  margin: 12px auto 0;
  max-width: 48ch;
  color: var(--muted);
  line-height: 1.65;
}

.actions {
  margin-top: 30px;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.btn {
  display: inline-flex;
  justify-content: center;
  align-items: center;
  width: 100%;
  min-height: 52px;
  text-decoration: none;
  border-radius: 999px;
  padding: 11px 18px;
  font-weight: 600;
  border: 1px solid transparent;
  transition: transform 140ms ease, background-color 140ms ease, border-color 140ms ease,
    box-shadow 160ms ease, color 140ms ease;
  will-change: transform;
  gap: 8px;
}

.btn-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.icon-svg {
  width: 18px;
  height: 18px;
  fill: currentColor;
}

.btn-label {
  white-space: nowrap;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.btn:hover {
  transform: translateY(-1px) scale(1.01);
}

.btn:active {
  transform: translateY(0) scale(0.985);
  box-shadow: 0 0 0 rgba(0, 0, 0, 0);
}

.btn:focus-visible {
  outline: none;
  border-color: var(--accent-strong);
  box-shadow: 0 0 0 3px rgba(110, 168, 254, 0.3);
}

.btn-primary {
  background: var(--accent);
  color: #081124;
  box-shadow: 0 10px 22px rgba(110, 168, 254, 0.35);
}

.btn-primary:hover {
  background: var(--accent-strong);
  box-shadow: 0 12px 26px rgba(139, 184, 255, 0.45);
}

.btn-secondary {
  background: transparent;
  color: var(--text);
  border-color: var(--border);
}

.btn-secondary:hover {
  border-color: var(--accent);
  background: rgba(110, 168, 254, 0.07);
  box-shadow: 0 10px 22px rgba(0, 0, 0, 0.45);
}

.meta-note {
  margin: 18px auto 0;
  max-width: 44ch;
  color: var(--muted);
  font-size: 0.95rem;
  line-height: 1.5;
}

.footer {
  color: var(--muted);
  font-size: 0.85rem;
  text-align: center;
}

.footer p {
  margin: 0;
}

.context-bubble {
  position: fixed;
  left: 16px;
  top: 16px;
  z-index: 9999;
  max-width: min(280px, calc(100vw - 32px));
  padding: 12px 16px;
  border: 1px solid rgba(110, 168, 254, 0.45);
  border-radius: 14px;
  background: rgba(10, 13, 20, 0.94);
  color: var(--text);
  box-shadow: 0 18px 36px rgba(0, 0, 0, 0.45);
  font-size: 0.92rem;
  line-height: 1.4;
  opacity: 0;
  transform: translateY(6px) scale(0.98);
  transition: opacity 180ms ease, transform 180ms ease;
  pointer-events: none;
}

.context-bubble.is-visible {
  opacity: 1;
  transform: translateY(0) scale(1);
}

@keyframes card-enter {
  from {
    opacity: 0;
    transform: translateY(6px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes bg-drift {
  0% {
    transform: translate3d(0, 0, 0) scale(1.02);
  }

  50% {
    transform: translate3d(8px, -10px, 0) scale(1.03);
  }

  100% {
    transform: translate3d(-6px, 6px, 0) scale(1.02);
  }
}

@keyframes badge-pulse {
  0%,
  100% {
    opacity: 0.8;
    letter-spacing: 0.12em;
  }

  50% {
    opacity: 1;
    letter-spacing: 0.24em;
  }
}

@media (max-width: 640px) {
  .actions {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 24px 18px;
    border-radius: 20px;
  }

  .logo {
    width: 144px;
  }

  .btn {
    padding: 12px 16px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .container,
  body::before,
  .badge {
    animation: none;
  }

  .logo,
  .btn {
    transition: none;
  }

  .logo:hover,
  .btn:hover,
  .btn:active {
    transform: none;
  }
}