@layer reset, tokens, base, components, utilities;

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

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

  body,
  h1,
  p {
    margin: 0;
  }

  input,
  button,
  textarea,
  select {
    font: inherit;
  }
}

@layer tokens {
  :root {
    color-scheme: light;

    --background: 0 0% 100%;
    --foreground: 240 10% 3.9%;
    --muted-foreground: 240 3.8% 46.1%;
    --border: 240 5.9% 90%;
    --input: 240 5.9% 90%;
    --ring: 240 5% 64.9%;

    --radius-md: 0.75rem;
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.04);

    --transition-fast: 160ms;
  }
}

@layer base {
  html {
    background: hsl(var(--background));
    -webkit-text-size-adjust: 100%;
  }

  body {
    min-height: 100vh;
    min-height: 100dvh;
    background: hsl(var(--background));
    color: hsl(var(--foreground));
    font-family:
      Inter,
      ui-sans-serif,
      system-ui,
      -apple-system,
      BlinkMacSystemFont,
      "Segoe UI",
      sans-serif;
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
  }
}

@layer components {
  .page {
    min-height: 100vh;
    min-height: 100dvh;
    display: grid;
    place-items: center;
    padding:
      max(1.5rem, env(safe-area-inset-top))
      max(1.5rem, env(safe-area-inset-right))
      max(1.5rem, env(safe-area-inset-bottom))
      max(1.5rem, env(safe-area-inset-left));
  }

  .pin-panel {
    width: min(100%, 32rem);
  }

  .pin-title {
    margin-bottom: 1rem;
    text-align: center;
    font-size: 0.875rem;
    line-height: 1.25rem;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
  }

  .pin-form {
    position: relative;
    width: 100%;
  }

  .pin-boxes {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 0.625rem;
    width: 100%;
    cursor: text;
  }

  .pin-box {
    display: grid;
    place-items: center;

    width: 3.25rem;
    height: 3.25rem;

    border: 1px solid hsl(var(--input));
    border-radius: var(--radius-md);
    background: hsl(var(--background));
    color: hsl(var(--foreground));
    box-shadow: var(--shadow-sm);

    font-size: 1.25rem;
    line-height: 1;
    font-weight: 600;

    transition:
      border-color var(--transition-fast) ease,
      box-shadow var(--transition-fast) ease,
      transform var(--transition-fast) ease;
  }

  .pin-box[data-active="true"] {
    border-color: hsl(var(--ring));
    box-shadow:
      0 0 0 3px hsl(var(--ring) / 0.16),
      var(--shadow-sm);
  }

  .pin-form:focus-within .pin-box[data-active="false"] {
    border-color: hsl(var(--border));
  }

  .pin-form[data-invalid="true"] .pin-box {
    animation: pin-shake 160ms ease-in-out 0s 2;
  }

  .pin-native-input {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;

    opacity: 0;
    border: 0;
    padding: 0;
    margin: 0;

    cursor: text;
    caret-color: transparent;
    color: transparent;
    background: transparent;
  }

  .pin-native-input:focus {
    outline: none;
  }

  @keyframes pin-shake {
    0%,
    100% {
      transform: translateX(0);
    }

    25% {
      transform: translateX(-0.25rem);
    }

    75% {
      transform: translateX(0.25rem);
    }
  }
}

@layer utilities {
  .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;
  }
}

@media (max-width: 30rem) {
  .pin-panel {
    max-width: 100%;
  }

  .pin-boxes {
    gap: 0.5rem;
  }

  .pin-box {
    width: 3rem;
    height: 3rem;
    font-size: 1.125rem;
  }
}

@media (max-width: 22rem) {
  .pin-boxes {
    gap: 0.375rem;
  }

  .pin-box {
    width: 2.75rem;
    height: 2.75rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.001ms !important;
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
  }
}