:root {
  --page-bg: #f3f4f2;
  --surface: #ffffff;
  --ink: #20292c;
  --muted: #687477;
  --track: #e9edeb;
  --line: #d9dfdc;
  --accent: #16705e;
  --accent-soft: #d6e8e2;
  --danger: #c63f3f;
  --danger-soft: #f8e5e3;
  --handle-size: 46px;
  --slider-padding: 3px;
  font-family:
    Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI",
    sans-serif;
  color: var(--ink);
  background: var(--page-bg);
  font-synthesis: none;
  -webkit-font-smoothing: antialiased;
}

* {
  box-sizing: border-box;
}

html,
body {
  min-height: 100%;
  margin: 0;
}

body {
  min-height: 100svh;
  overflow-x: hidden;
  background-color: var(--page-bg);
  background-image:
    linear-gradient(rgba(32, 41, 44, 0.032) 1px, transparent 1px),
    linear-gradient(90deg, rgba(32, 41, 44, 0.032) 1px, transparent 1px);
  background-size: 28px 28px;
}

.page-shell {
  min-height: 100svh;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  place-items: center;
  padding:
    max(20px, env(safe-area-inset-top))
    max(14px, env(safe-area-inset-right))
    max(20px, env(safe-area-inset-bottom))
    max(14px, env(safe-area-inset-left));
}

.verification {
  width: min(100%, 408px);
  min-width: 0;
  padding: 16px 16px 13px;
  border: 1px solid rgba(32, 41, 44, 0.1);
  border-radius: 8px;
  background: var(--surface);
  box-shadow: 0 18px 50px rgba(35, 45, 43, 0.11);
}

.verification-header {
  display: flex;
  align-items: center;
  gap: 9px;
  min-height: 28px;
  margin: 0 1px 13px;
}

h1 {
  margin: 0;
  overflow-wrap: anywhere;
  color: var(--ink);
  font-size: 15px;
  font-weight: 650;
  line-height: 1.35;
  letter-spacing: 0;
}

.shield {
  position: relative;
  width: 24px;
  height: 27px;
  flex: 0 0 auto;
  border: 1px solid rgba(22, 112, 94, 0.25);
  border-radius: 12px 12px 10px 10px;
  background: var(--accent-soft);
  clip-path: polygon(50% 0, 94% 16%, 88% 70%, 50% 100%, 12% 70%, 6% 16%);
}

.shield::before,
.shield::after {
  position: absolute;
  content: "";
  background: var(--accent);
}

.shield::before {
  width: 4px;
  height: 9px;
  top: 8px;
  left: 7px;
  border-radius: 3px;
}

.shield::after {
  width: 4px;
  height: 13px;
  top: 6px;
  right: 6px;
  border-radius: 3px;
}

.puzzle-stage {
  position: relative;
  width: 100%;
  aspect-ratio: 9 / 5;
  overflow: hidden;
  border: 1px solid rgba(32, 41, 44, 0.14);
  border-radius: 6px;
  background: #cfd5d2;
  isolation: isolate;
  transition:
    border-color 160ms ease,
    opacity 160ms ease;
}

.puzzle-stage canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
}

.puzzle-background {
  z-index: 1;
}

.puzzle-piece {
  z-index: 2;
  filter: drop-shadow(0 3px 5px rgba(8, 15, 17, 0.42));
}

.checking-spinner {
  position: absolute;
  z-index: 4;
  top: 50%;
  left: 50%;
  width: 30px;
  height: 30px;
  display: none;
  margin: -15px 0 0 -15px;
  border: 3px solid rgba(255, 255, 255, 0.42);
  border-top-color: #ffffff;
  border-radius: 50%;
  filter: drop-shadow(0 1px 3px rgba(0, 0, 0, 0.25));
  animation: spin 700ms linear infinite;
}

.puzzle-stage.is-checking::after {
  position: absolute;
  z-index: 3;
  inset: 0;
  content: "";
  background: rgba(16, 24, 26, 0.22);
}

.puzzle-stage.is-checking .checking-spinner {
  display: block;
}

.puzzle-stage.is-error {
  border-color: rgba(198, 63, 63, 0.72);
  animation: shake 360ms ease-in-out;
}

.slider {
  --position: 0px;
  position: relative;
  width: 100%;
  height: 52px;
  margin-top: 12px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--track);
  cursor: grab;
  touch-action: none;
  user-select: none;
  -webkit-user-select: none;
  transition:
    border-color 160ms ease,
    background-color 160ms ease;
}

.slider:focus-visible {
  outline: 3px solid rgba(22, 112, 94, 0.2);
  outline-offset: 3px;
}

.slider.is-dragging {
  cursor: grabbing;
}

.slider-fill {
  position: absolute;
  inset-block: 0;
  inset-inline-start: 0;
  width: calc(var(--position) + var(--handle-size) + var(--slider-padding));
  background: var(--accent-soft);
  transition: width 0ms linear;
}

.slider-label {
  position: absolute;
  z-index: 1;
  inset-block: 0;
  inset-inline-start: calc(var(--handle-size) + 13px);
  inset-inline-end: 12px;
  display: grid;
  place-items: center;
  overflow-wrap: anywhere;
  color: #536063;
  font-size: 13px;
  font-weight: 600;
  line-height: 1.2;
  text-align: center;
  transition: opacity 120ms ease;
}

.slider-handle {
  position: absolute;
  z-index: 2;
  top: var(--slider-padding);
  inset-inline-start: calc(var(--slider-padding) + var(--position));
  width: var(--handle-size);
  height: var(--handle-size);
  display: grid;
  place-items: center;
  border-radius: 4px;
  color: #ffffff;
  background: var(--accent);
  pointer-events: none;
  transition:
    inset-inline-start 0ms linear,
    background-color 160ms ease;
}

.handle-arrow {
  font-size: 21px;
  line-height: 1;
}

.handle-spinner,
.handle-error {
  display: none;
}

.slider.is-dragging .slider-label {
  opacity: 0.18;
}

.slider.is-resetting .slider-fill {
  transition: width 320ms cubic-bezier(0.22, 0.8, 0.32, 1);
}

.slider.is-resetting .slider-handle {
  transition:
    inset-inline-start 320ms cubic-bezier(0.22, 0.8, 0.32, 1),
    background-color 160ms ease;
}

.slider.is-checking {
  cursor: wait;
}

.slider.is-checking .slider-label,
.slider.is-error .slider-label {
  opacity: 0;
}

.slider.is-checking .handle-arrow,
.slider.is-error .handle-arrow {
  display: none;
}

.slider.is-checking .handle-spinner {
  width: 19px;
  height: 19px;
  display: block;
  border: 2px solid rgba(255, 255, 255, 0.42);
  border-top-color: #ffffff;
  border-radius: 50%;
  animation: spin 700ms linear infinite;
}

.slider.is-error {
  border-color: rgba(198, 63, 63, 0.58);
  background: var(--danger-soft);
}

.slider.is-error .slider-fill {
  background: var(--danger-soft);
}

.slider.is-error .slider-handle {
  background: var(--danger);
}

.slider.is-error .handle-error {
  display: block;
  font-size: 21px;
  font-weight: 750;
  line-height: 1;
}

.status {
  min-height: 20px;
  margin: 7px 2px 0;
  color: var(--muted);
  font-size: 12px;
  font-weight: 550;
  line-height: 1.55;
}

.status.is-error {
  color: var(--danger);
}

[dir="rtl"] .handle-arrow {
  transform: scaleX(-1);
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

@keyframes shake {
  0%,
  100% {
    transform: translateX(0);
  }
  25% {
    transform: translateX(-5px);
  }
  50% {
    transform: translateX(4px);
  }
  75% {
    transform: translateX(-2px);
  }
}

@media (max-width: 420px) {
  .page-shell {
    padding-inline: 10px;
  }

  .verification {
    padding: 12px 12px 10px;
  }

  .verification-header {
    margin-bottom: 10px;
  }

  .slider {
    margin-top: 10px;
  }
}

@media (max-width: 330px) {
  .slider-label {
    inset-inline-start: calc(var(--handle-size) + 8px);
    inset-inline-end: 7px;
    font-size: 12px;
  }
}

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