@layer reset, base, components;

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

  * {
    margin: 0;
  }

  button {
    font: inherit;
    cursor: pointer;
  }

  :focus-visible {
    outline: 2px solid light-dark(#1EAEDB, #4FC3F7);
    outline-offset: 2px;
    border-radius: 2px;
  }
}

@layer base {
  :root {
    color-scheme: light dark;

    --multistep-primary: light-dark(#1EAEDB, #4FC3F7);
    --multistep-inactive: light-dark(silver, #666);
    --multistep-inactive-light: light-dark(gray, #999);
    --multistep-bg: light-dark(#f1f1f141, #2a2a2a41);
    --multistep-border: light-dark(silver, #555);
    --multistep-button-bg: light-dark(#f7f7f7, #1a1a1a);
    --multistep-text: light-dark(#333, #e0e0e0);

    --multistep-spacing-xs: clamp(0.5rem, 1vw, 1rem);
    --multistep-spacing-sm: clamp(1rem, 2vw, 2rem);
    --multistep-spacing-md: clamp(2rem, 3vw, 4rem);
    --multistep-spacing-lg: clamp(3rem, 4vw, 5rem);

    --multistep-button-size: clamp(2.5rem, 5vw, 4rem);
    --multistep-font-size-base: clamp(0.875rem, 1.5vw, 1rem);
    --multistep-font-size-step: clamp(0.75rem, 2vw, 0.9rem);

    --multistep-tap-target: 44px;
  }

  @media (prefers-color-scheme: dark) {
    :root:not([data-theme="light"]) {
      color-scheme: dark;
    }
  }

  @media (hover: hover) and (pointer: fine) {
    button:hover:not(:disabled) {
      opacity: 0.8;
      transition: opacity 0.2s ease;
    }
  }
}

@layer components {
  .multistep-container {
    container-type: inline-size;
    container-name: multistep;
  }

  .multistep-component {
    margin-block: var(--multistep-spacing-lg);
    background-color: var(--multistep-bg);
    max-inline-size: 960px;
    inline-size: 100%;
  }

  .multistep-section {
    display: block;
    margin: var(--multistep-spacing-md);
  }

  @container multistep (max-width: 639px) {
    .multistep-section {
      margin: var(--multistep-spacing-sm);
    }
  }

  .multistep-top-nav {
    display: flex;
    flex-direction: row;
    flex-wrap: nowrap;
    margin: 0;
    padding-block-end: var(--multistep-spacing-sm);
    list-style-type: none;
    overflow-x: auto;
    scrollbar-width: thin;
    gap: 0;
  }

  @container multistep (max-width: 639px) {
    .multistep-top-nav {
      padding-block-end: var(--multistep-spacing-xs);
    }
  }

  .multistep-top-nav::-webkit-scrollbar {
    height: 4px;
  }

  .multistep-top-nav::-webkit-scrollbar-thumb {
    background: var(--multistep-inactive);
    border-radius: 2px;
  }

  .multistep-top-nav-step {
    flex: 1 1 25%;
    min-inline-size: 80px;
    padding-block-start: var(--multistep-spacing-md);
    padding-inline-end: var(--multistep-spacing-md);
    border-block-end: 2px solid var(--multistep-border);
  }

  @container multistep (max-width: 639px) {
    .multistep-top-nav-step {
      padding-block-start: var(--multistep-spacing-sm);
      padding-inline-end: var(--multistep-spacing-sm);
      min-inline-size: 60px;
    }
  }

  .multistep-step-button {
    border: none;
    background: transparent;
    padding: 0;
    inline-size: 100%;
    color: var(--multistep-inactive-light);
    cursor: pointer;
    font-weight: 400;
    font-size: var(--multistep-font-size-step);
    min-block-size: var(--multistep-tap-target);
    display: flex;
    align-items: center;
    justify-content: center;
  }

  .multistep-step-button[aria-selected="true"] {
    color: var(--multistep-primary);
    font-weight: 600;
  }

  .multistep-step-button:disabled {
    cursor: not-allowed;
    opacity: 0.5;
  }

  .multistep-nav-buttons {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin: var(--multistep-spacing-md);
  }

  @container multistep (max-width: 639px) {
    .multistep-nav-buttons {
      margin: var(--multistep-spacing-sm);
    }
  }

  .multistep-button {
    color: var(--multistep-primary);
    background-color: var(--multistep-button-bg);
    border: 0;
    font-size: var(--multistep-button-size);
    font-weight: 500;
    padding: 0;
    inline-size: var(--multistep-tap-target);
    block-size: var(--multistep-tap-target);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 4px;
  }

  .multistep-button:disabled {
    opacity: 0.3;
    cursor: not-allowed;
  }

  .multistep-button-prev {
    justify-self: flex-start;
  }

  .multistep-button-next {
    justify-self: flex-end;
  }
}