:root {
  color-scheme: light dark;
  --bg: #fafafa;
  --fg: #141414;
  --muted: #626262;
  --border: #e5e4e5;
  --accent: #5c5c8a;
  --accent-hover: #45456b;
  --surface: #ffffff;
  --focus-ring: #5c5c8a;
  --backdrop: rgba(15, 15, 20, 0.5);
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  line-height: 1.5;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #121212;
    --fg: #f3f3f3;
    --muted: #a5a8ac;
    --border: #2e2e2e;
    --accent: #a8a8d4;
    --accent-hover: #c4c4e8;
    --surface: #1c1c1c;
    --focus-ring: #a8a8d4;
    --backdrop: rgba(0, 0, 0, 0.65);
  }
}

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

body {
  margin: 0;
  min-height: 100vh;
  min-width: 320px;
  background: var(--bg);
  color: var(--fg);
}

a {
  color: var(--accent);
}

a:hover {
  color: var(--accent-hover);
}

.layout {
  max-width: 42rem;
  margin: 0 auto;
  padding: 1.5rem 1rem 3rem;
}

@media (min-width: 640px) {
  .layout {
    padding: 2.5rem 1.5rem 4rem;
  }
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 2rem;
}

.brand img {
  width: 48px;
  height: 48px;
  flex-shrink: 0;
}

h1 {
  margin: 0;
  font-size: clamp(1.5rem, 4vw, 2rem);
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1.2;
}

.lead {
  margin: 0.75rem 0 0;
  font-size: 1rem;
  color: var(--muted);
}

.actions {
  margin-top: 2rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 1.25rem;
  border-radius: 9999px;
  border: 1px solid transparent;
  background: var(--accent);
  color: var(--surface);
  font-size: 1rem;
  font-weight: 600;
  font-family: inherit;
  text-decoration: none;
  cursor: pointer;
  transition: background 0.15s ease, color 0.15s ease;
}

.btn-primary:hover {
  background: var(--accent-hover);
  color: var(--fg);
}

.btn-primary:focus-visible {
  outline: none;
  box-shadow: 0 0 0 2px var(--bg), 0 0 0 4px var(--focus-ring);
}

@media (prefers-color-scheme: dark) {
  .btn-primary {
    color: #121212;
  }

  .btn-primary:hover {
    color: #121212;
  }
}

.panel {
  margin-top: 2rem;
  padding: 1.25rem 1rem;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--surface);
}

.panel h2 {
  margin: 0 0 0.75rem;
  font-size: 1.125rem;
  font-weight: 600;
}

.panel ol {
  margin: 0;
  padding-left: 1.25rem;
  color: var(--muted);
}

.panel li + li {
  margin-top: 0.5rem;
}

.meta {
  margin-top: 1.5rem;
  font-size: 0.875rem;
  color: var(--muted);
}

.unavailable {
  margin: 0;
  font-size: 1rem;
  color: var(--muted);
}

.welcome-dialog {
  margin: auto;
  padding: 0;
  max-width: min(32rem, calc(100vw - 2rem));
  border: 1px solid var(--border);
  border-radius: 16px;
  background: transparent;
  color: inherit;
}

.welcome-dialog::backdrop {
  background: var(--backdrop);
}

.dialog-surface {
  padding: 1.5rem 1.25rem 1.25rem;
  background: var(--surface);
  border-radius: 16px;
  max-height: min(36rem, calc(100vh - 2rem));
  overflow-y: auto;
}

@media (min-width: 480px) {
  .dialog-surface {
    padding: 1.75rem 1.5rem 1.5rem;
  }
}

.dialog-title {
  margin: 0 0 0.75rem;
  font-size: 1.25rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1.25;
}

.dialog-body {
  margin: 0;
  font-size: 0.9375rem;
  color: var(--muted);
}

.dialog-body p {
  margin: 0 0 0.75rem;
}

.dialog-body p:last-child {
  margin-bottom: 0;
}

.dialog-body a {
  color: var(--accent);
  text-underline-offset: 2px;
}

.dialog-body a:hover {
  color: var(--accent-hover);
}

.dialog-privacy {
  margin: 1rem 0 0;
  padding: 0.75rem 0.875rem;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--bg);
}

.dialog-subtitle {
  margin: 0 0 0.5rem;
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--fg);
  letter-spacing: 0.02em;
  text-transform: uppercase;
}

.dialog-list {
  margin: 0;
  padding-left: 1.1rem;
  font-size: 0.875rem;
  line-height: 1.45;
  color: var(--muted);
}

.dialog-list li + li {
  margin-top: 0.45rem;
}

.panel-lead {
  margin: 0 0 0.75rem;
  font-size: 0.9375rem;
  line-height: 1.45;
  color: var(--muted);
}

.panel-list {
  margin: 0;
  padding-left: 1.25rem;
  color: var(--muted);
  font-size: 0.9375rem;
  line-height: 1.5;
}

.panel-list li + li {
  margin-top: 0.65rem;
}

.panel-list strong {
  color: var(--fg);
  font-weight: 600;
}

.panel-list a {
  color: var(--accent);
  text-underline-offset: 2px;
}

.panel-list a:hover {
  color: var(--accent-hover);
}

.panel-privacy {
  margin-top: 1.5rem;
}

.dialog-actions {
  margin-top: 1.5rem;
}

.dialog-actions .btn-primary {
  width: 100%;
}

.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;
}

.site-footer {
  margin-top: 2.5rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--border);
}

.site-footer-text {
  margin: 0;
  font-size: 0.875rem;
  line-height: 1.5;
  color: var(--muted);
}

.site-footer a {
  color: var(--accent);
  text-underline-offset: 2px;
}

.site-footer a:hover {
  color: var(--accent-hover);
}