:root {
  color-scheme: light;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-synthesis: none;
  --ink: #172033;
  --muted: #69748a;
  --line: #e5eaf2;
  --panel: rgba(255, 255, 255, 0.94);
  --primary: #4f46e5;
  --primary-dark: #3730a3;
  --primary-soft: #eef0ff;
  --success: #16835d;
  --danger: #c2415b;
  background: #f5f7fb;
}

* {
  box-sizing: border-box;
}

html {
  min-width: 320px;
  min-height: 100%;
  background: #f5f7fb;
}

body {
  min-height: 100vh;
  min-height: 100svh;
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at 50% -12%, rgba(99, 102, 241, 0.16), transparent 35rem),
    linear-gradient(180deg, #f9faff 0%, #f4f6fa 62%, #f1f4f8 100%);
}

button,
a {
  -webkit-tap-highlight-color: transparent;
}

button {
  font: inherit;
}

.page-shell {
  width: min(100%, 620px);
  min-height: 100vh;
  min-height: 100svh;
  margin: 0 auto;
  padding: max(22px, env(safe-area-inset-top)) max(20px, env(safe-area-inset-right)) max(20px, env(safe-area-inset-bottom)) max(20px, env(safe-area-inset-left));
  display: flex;
  flex-direction: column;
}

.brand {
  min-height: 38px;
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 18px;
  font-weight: 760;
  letter-spacing: -0.02em;
}

.brand-mark {
  width: 34px;
  height: 34px;
  display: grid;
  place-items: center;
  color: white;
  border-radius: 11px;
  background: linear-gradient(145deg, #6d66f5, #4338ca);
  box-shadow: 0 7px 16px rgba(79, 70, 229, 0.24);
}

.brand-mark svg {
  width: 25px;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.7;
}

.status-pill {
  margin-left: auto;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 9px;
  border: 1px solid #d9defa;
  border-radius: 999px;
  color: #5149bd;
  background: rgba(246, 247, 255, 0.88);
  font-size: 11px;
  font-weight: 650;
  letter-spacing: 0;
}

.status-pill i {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #36b37e;
  box-shadow: 0 0 0 3px rgba(54, 179, 126, 0.13);
}

main {
  flex: 1;
}

.hero {
  padding: 64px 4px 26px;
  text-align: center;
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--primary);
  font-size: 11px;
  font-weight: 750;
  letter-spacing: 0.16em;
}

h1 {
  margin: 0;
  font-size: clamp(30px, 8vw, 40px);
  line-height: 1.15;
  letter-spacing: -0.04em;
}

.hero-copy {
  max-width: 440px;
  margin: 14px auto 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.7;
}

.diagnostics-card {
  overflow: hidden;
  border: 1px solid rgba(220, 226, 238, 0.9);
  border-radius: 22px;
  background: var(--panel);
  box-shadow: 0 20px 60px rgba(41, 53, 82, 0.08), 0 2px 8px rgba(41, 53, 82, 0.04);
  backdrop-filter: blur(18px);
}

.diagnostic-block {
  padding: 22px;
}

.block-heading {
  display: flex;
  align-items: center;
  gap: 12px;
}

.block-icon {
  flex: 0 0 auto;
  width: 36px;
  height: 36px;
  display: grid;
  place-items: center;
  border-radius: 11px;
  color: var(--primary);
  background: var(--primary-soft);
}

.block-icon svg {
  width: 19px;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.8;
}

.origin-icon {
  color: #0f8b71;
  background: #e9f8f3;
}

.block-label,
.block-hint {
  margin: 0;
}

.block-label {
  font-size: 14px;
  font-weight: 700;
}

.block-hint {
  margin-top: 3px;
  color: #8992a5;
  font-size: 11px;
}

.copy-button {
  margin-left: auto;
  padding: 7px 9px;
  display: inline-flex;
  align-items: center;
  gap: 5px;
  border: 0;
  border-radius: 9px;
  color: #59647a;
  background: #f3f5f9;
  font-size: 11px;
  font-weight: 650;
  cursor: pointer;
  transition: color 160ms ease, background-color 160ms ease, transform 160ms ease;
}

.copy-button:hover {
  color: var(--primary);
  background: var(--primary-soft);
}

.copy-button:active {
  transform: scale(0.96);
}

.copy-button svg {
  width: 14px;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.8;
}

.ua-value {
  min-height: 78px;
  margin: 18px 0 0;
  padding: 14px;
  overflow-wrap: anywhere;
  border: 1px solid #eaedf3;
  border-radius: 12px;
  color: #4b566c;
  background: #f8f9fc;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 11px;
  line-height: 1.65;
  user-select: text;
}

.divider {
  height: 1px;
  margin: 0 22px;
  background: var(--line);
}

.origin-block {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 16px;
}

.origin-result {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 5px;
}

.origin-result code {
  padding: 7px 11px;
  border: 1px solid #cfd3fb;
  border-radius: 9px;
  color: var(--primary-dark);
  background: #f1f2ff;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 15px;
  font-weight: 760;
}

.origin-result span {
  color: #8992a5;
  font-size: 10px;
}

.action-panel {
  padding: 24px 2px 0;
  text-align: center;
}

.authorize-button {
  width: 100%;
  min-height: 58px;
  padding: 8px 18px 8px 10px;
  display: flex;
  align-items: center;
  gap: 13px;
  border-radius: 17px;
  color: white;
  background: linear-gradient(115deg, #5f58e8, #4338ca);
  box-shadow: 0 14px 28px rgba(67, 56, 202, 0.24), inset 0 1px rgba(255, 255, 255, 0.2);
  font-size: 15px;
  font-weight: 720;
  text-decoration: none;
  transition: transform 180ms ease, box-shadow 180ms ease, filter 180ms ease;
}

.authorize-button:hover {
  filter: brightness(1.04);
  box-shadow: 0 16px 34px rgba(67, 56, 202, 0.3), inset 0 1px rgba(255, 255, 255, 0.2);
  transform: translateY(-1px);
}

.authorize-button:active {
  transform: translateY(1px);
}

.authorize-button[aria-disabled="true"] {
  opacity: 0.52;
  pointer-events: none;
}

.button-logo {
  width: 40px;
  height: 40px;
  display: grid;
  place-items: center;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.16);
}

.button-logo svg {
  width: 24px;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.8;
}

.arrow-icon {
  width: 20px;
  margin-left: auto;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.8;
}

.secure-note {
  margin: 13px 0 0;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  color: #8992a5;
  font-size: 11px;
}

.secure-note svg {
  width: 13px;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.8;
}

.feedback {
  min-height: 18px;
  margin: 8px 0 0;
  font-size: 12px;
  font-weight: 600;
}

.feedback:empty {
  margin-top: 0;
}

.feedback[data-type="pending"] {
  color: var(--primary);
}

.feedback[data-type="success"] {
  color: var(--success);
}

.feedback[data-type="error"] {
  color: var(--danger);
}

footer {
  padding-top: 34px;
  display: flex;
  justify-content: center;
  gap: 7px;
  color: #9aa3b4;
  font-size: 10px;
}

.clipboard-helper {
  position: fixed;
  top: -9999px;
  left: -9999px;
}

:focus-visible {
  outline: 3px solid rgba(79, 70, 229, 0.28);
  outline-offset: 3px;
}

@media (max-width: 420px) {
  .page-shell {
    padding-right: max(16px, env(safe-area-inset-right));
    padding-left: max(16px, env(safe-area-inset-left));
  }

  .hero {
    padding-top: 48px;
  }

  .diagnostic-block {
    padding: 19px;
  }

  .divider {
    margin-inline: 19px;
  }

  .origin-block {
    grid-template-columns: 1fr;
  }

  .origin-result {
    align-items: flex-start;
    padding-left: 48px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }
}

.fallback-shell {
  min-height: 100vh;
  min-height: 100svh;
  padding: max(24px, env(safe-area-inset-top)) 20px max(24px, env(safe-area-inset-bottom));
  display: grid;
  place-items: center;
}

.fallback-card {
  width: min(100%, 420px);
  padding: 34px 24px 26px;
  border: 1px solid rgba(220, 226, 238, 0.9);
  border-radius: 24px;
  background: var(--panel);
  box-shadow: 0 20px 60px rgba(41, 53, 82, 0.1);
  text-align: center;
}

.fallback-icon {
  width: 58px;
  height: 58px;
  margin: 0 auto 22px;
  display: grid;
  place-items: center;
  border-radius: 18px;
  color: var(--primary);
  background: var(--primary-soft);
}

.fallback-icon svg {
  width: 30px;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.7;
}

.fallback-card h1 {
  font-size: 25px;
}

.fallback-card p {
  margin: 13px 0 24px;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.7;
}

.back-button {
  min-height: 48px;
  display: grid;
  place-items: center;
  border-radius: 14px;
  color: white;
  background: linear-gradient(115deg, #5f58e8, #4338ca);
  box-shadow: 0 10px 24px rgba(67, 56, 202, 0.22);
  font-size: 14px;
  font-weight: 700;
  text-decoration: none;
}