/* 00-base.css */
@layer theme, base, components, animations, utilities;

@layer base {
  *, *::before, *::after {
    box-sizing: border-box;
    -webkit-tap-highlight-color: transparent;
  }

  * {
    margin: 0;
  }

  html {
    tab-size: 4;
  }

  /* Top-layer elements don't inherit from body. Set explicitly. */
  body, dialog, [popover] {
    font-family: var(--font-sans);
    font-size: var(--text-regular);
    line-height: var(--leading-normal);
    color: var(--foreground);
  }

  body {
    background-color: var(--background);
    color: var(--foreground);
    -webkit-font-smoothing: antialiased;
  }

  img, picture, video, canvas, svg {
    max-width: 100%;
  }

  p, h1, h2, h3, h4, h5, h6 {
    overflow-wrap: break-word;
  }

  h1, h2, h3, h4, h5, h6 {
    font-weight: var(--font-semibold);
    line-height: 1.25;

    &:first-child {
      margin-block-start: 0;
    }
  }

  h1 {
    font-size: var(--text-1);
    margin: var(--space-10) 0 var(--space-6);
  }

  h2 {
    font-size: var(--text-2);
    margin: var(--space-8) 0 var(--space-5);
  }

  h3 {
    font-size: var(--text-3);
    margin: var(--space-6) 0 var(--space-4);
  }

  h4 {
    font-size: var(--text-4);
    margin: var(--space-5) 0 var(--space-3);
  }

  h5 {
    font-size: var(--text-5);
    margin: var(--space-4) 0 var(--space-2);
  }

  h6 {
    font-size: var(--text-regular);
    margin: var(--space-4) 0 var(--space-2);
  }

  p {
    margin-block-end: var(--space-4);

    &:last-child {
      margin-block-end: 0;
    }
  }

  a {
    color: var(--primary);
    text-decoration: underline;
    text-underline-offset: 2px;
    transition: color var(--transition-fast);

    &:hover {
      color: rgb(from var(--primary) r g b / 0.8);
    }
  }

  strong, b {
    font-weight: var(--font-semibold);
  }

  em, i {
    font-style: italic;
  }

  small {
    font-size: var(--text-7);
  }

  code {
    font-family: var(--font-mono);
    font-size: 0.875em;
    padding: 0.125rem 0.25rem;
    background-color: var(--faint);
    border-radius: var(--radius-small);
  }

  pre {
    font-family: var(--font-mono);
    padding: var(--space-4);
    background-color: var(--faint);
    border-radius: var(--radius-medium);
    overflow-x: auto;
    margin-block-end: var(--space-4);

    code {
      padding: 0;
      background: none;
      border-radius: 0;
    }
  }

  blockquote {
    border-inline-start: 4px solid var(--border);
    padding-inline-start: var(--space-4);
    margin: var(--space-4) 0;
    color: var(--muted-foreground);
    font-style: italic;
  }

  hr {
    border: none;
    border-top: 1px solid var(--border);
    margin: var(--space-8) 0;
  }

  ul, ol {
    padding-inline-start: var(--space-6);
    margin-block-end: var(--space-4);
  }

  ul {
    list-style-type: disc;
  }

  ol {
    list-style-type: decimal;
  }

  li {
    margin-block-end: var(--space-1);
  }

  mark {
    background-color: rgb(from var(--warning) r g b / 0.3);
    padding: 0.125rem 0.25rem;
    border-radius: var(--radius-small);
  }

  :focus-visible {
    outline: 2px solid var(--ring);
    outline-offset: 2px;
  }

  :disabled {
    opacity: 0.5;
    cursor: not-allowed;
  }
}

/* 01-theme.css */
@layer theme {
  :root {
    /* Default light theme variables */
    --background: #fff;
    --foreground: #09090b;
    --card: #fff;
    --card-foreground: #09090b;
    --primary: #574747;
    --primary-foreground: #fafafa;
    --secondary: #f4f4f5;
    --secondary-foreground: #574747;
    --muted: #f4f4f5;
    --muted-foreground: #71717a;
    --faint: #fafafa;
    --accent: #f4f4f5;
    --danger: #d32f2f;
    --danger-foreground: #fafafa;
    --success: #008032;
    --success-foreground: #fafafa;
    --warning: #a65b00;
    --warning-foreground: #09090b;
    --border: #d4d4d8;
    --input: #d4d4d8;
    --ring: #574747;

    /* ==================== */
    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-5: 1.25rem;
    --space-6: 1.5rem;
    --space-8: 2rem;
    --space-10: 2.5rem;
    --space-12: 3rem;
    --space-14: 3.5rem;
    --space-16: 4rem;
    --space-18: 4.5rem;

    --radius-small: 0.125rem;
    --radius-medium: 0.375rem;
    --radius-large: 0.75rem;
    --radius-full: 9999px;

    --bar-height: 0.5rem;

    --font-sans: system-ui, sans-serif;
    --font-mono: ui-monospace, Consolas, monospace;

    --text-1: clamp(1.75rem, 1.5rem + 1.1vw, 2.25rem);
    --text-2: clamp(1.5rem, 1.3rem + 0.8vw, 1.875rem);
    --text-3: clamp(1.25rem, 1.1rem + 0.5vw, 1.5rem);
    --text-4: clamp(1.125rem, 1.05rem + 0.3vw, 1.25rem);
    --text-5: 1.125rem;
    --text-6: 1rem;
    --text-7: 0.875rem;
    --text-8: 0.75rem;
    --text-regular: var(--text-6);

    --leading-normal: 1.5;

    --font-normal: 400;
    --font-medium: 500;
    --font-semibold: 600;
    --font-bold: 600;

    --shadow-small: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-medium: 0 1px 3px 0 rgb(0 0 0 / 0.1), 0 1px 2px -1px rgb(0 0 0 / 0.1);
    --shadow-large: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);

    --transition-fast: 120ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition: 200ms cubic-bezier(0.4, 0, 0.2, 1);

    --z-dropdown: 50;
    --z-modal: 200;
  }

  [data-theme="dark"] {
    color-scheme: dark;
    --background: #09090b;
    --foreground: #fafafa;
    --card: #18181b;
    --card-foreground: #fafafa;
    --primary: #fafafa;
    --primary-foreground: #18181b;
    --secondary: #27272a;
    --secondary-foreground: #fafafa;
    --muted: #27272a;
    --muted-foreground: #a1a1aa;
    --faint: #1e1e21;
    --accent: #27272a;
    --danger: #f4807b;
    --danger-foreground: #18181b;
    --success: #6cc070;
    --success-foreground: #18181b;
    --warning: #f0a030;
    --warning-foreground: #09090b;
    --border: #52525b;
    --input: #52525b;
    --ring: #d4d4d8;
  }
}

/* accordion.css */
@layer components {
  details {
    border: 1px solid var(--border);
    border-radius: var(--radius-medium);
    overflow: hidden;

    & + details {
      margin-top: -1px;
      border-start-start-radius: 0;
      border-start-end-radius: 0;
    }

    &:has(+ details) {
      border-end-start-radius: 0;
      border-end-end-radius: 0;
    }

    &[open] summary {
      border-bottom: 1px solid var(--border);
    }
  }

  summary {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-2);
    padding: var(--space-4);
    font-weight: var(--font-medium);
    cursor: pointer;
    user-select: none;
    transition: background-color var(--transition-fast);

    &:hover {
      background-color: var(--muted);
    }

    &::-webkit-details-marker, &::marker {
      display: none;
    }

    &::after {
      content: "";
      width: 1em;
      height: 1em;
      flex-shrink: 0;
      background-color: currentColor;
      mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='2'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");
      mask-size: contain;
      mask-repeat: no-repeat;
      transition: transform var(--transition-fast);
    }

    details[open] &::after {
      transform: rotate(180deg);
    }
  }

  details > *:not(summary) {
    padding: var(--space-4);
  }
}

/* alert.css */
@layer components {
  [role="alert"] {
    --bg-amount: 8%;

    position: relative;
    display: flex;
    gap: var(--space-3);
    padding: var(--space-4) var(--space-6);
    background-color: var(--background);
    border: 1px solid var(--border);
    border-radius: var(--radius-medium);
    font-size: var(--text-7);

    [data-theme="dark"] & {
      --bg-amount: 20%;
    }

    &[data-variant] {
      border: none;
    }

    &[data-variant="error"],
    &[data-variant="danger"] {
      color: var(--danger);
      background-color: color-mix(in srgb, var(--danger) var(--bg-amount), transparent);

      & a {
        color: var(--danger);
      }
    }

    &[data-variant="success"] {
      color: var(--success);
      background-color: color-mix(in srgb, var(--success) var(--bg-amount), transparent);

      & a {
        color: var(--success);
      }
    }

    &[data-variant="warning"] {
      color: var(--warning);
      background-color: color-mix(in srgb, var(--warning) var(--bg-amount), transparent);

      & a {
        color: var(--warning);
      }
    }
  }
}

/* animations.css */
@layer animations {
  /* Pop-in animation for modals/overlays - swings from above */
  .animate-pop-in {
    opacity: 1;
    transform: perspective(1000px) rotateX(0deg) translateZ(0);
    transition:
      opacity 150ms cubic-bezier(0.4, 0, 0.2, 1),
      transform 150ms cubic-bezier(0.4, 0, 0.2, 1),
      overlay 150ms cubic-bezier(0.4, 0, 0.2, 1) allow-discrete,
      display 150ms cubic-bezier(0.4, 0, 0.2, 1) allow-discrete;

    /* Entry - where to animate FROM */
    @starting-style {
      opacity: 0;
      transform: perspective(1000px) rotateX(-15deg) translateZ(-80px);
    }

    /* Exit - where to animate TO when closing */
    &[data-state="closing"] {
      opacity: 0;
      transform: perspective(1000px) rotateX(-15deg) translateZ(-80px);
    }

    &[data-state="closing"]::backdrop {
      opacity: 0;
    }
  }

  /* Backdrop animation for dialogs */
  dialog::backdrop {
    opacity: 1;
    transition: opacity 150ms cubic-bezier(0.4, 0, 0.2, 1);

    @starting-style {
      opacity: 0;
    }
  }

  /* Slide-in animation for toasts */
  .animate-slide-in {
    opacity: 1;
    transform: translateX(0);
    transition:
      opacity 150ms cubic-bezier(0.16, 1, 0.3, 1),
      transform 150ms cubic-bezier(0.16, 1, 0.3, 1);

    /* Entry - slide in from right */
    @starting-style {
      opacity: 0;
      transform: translateX(100%);
    }

    /* Exit - slide out to right */
    &[data-state="closing"] {
      opacity: 0;
      transform: translateX(100%);
    }
  }
}

/* badge.css */
@layer components {
  .badge {
    --bg-amount: 10%;

    display: inline-flex;
    align-items: center;
    gap: var(--space-1);
    padding: var(--space-1) var(--space-4);
    font-size: var(--text-8);
    font-weight: var(--font-medium);
    line-height: var(--leading-normal);
    background-color: var(--primary);
    color: var(--primary-foreground);
    border-radius: var(--radius-full);

    [data-theme="dark"] & {
      --bg-amount: 30%;
    }

    &.secondary {
      background-color: var(--secondary);
      color: var(--secondary-foreground);
    }

    &.outline {
      background-color: transparent;
      color: var(--foreground);
      border: 1px solid var(--border);
    }

    &.success {
      color: var(--success);
      background-color: color-mix(in srgb, var(--success) var(--bg-amount), transparent);
    }

    &.warning {
      color: var(--warning);
      background-color: color-mix(in srgb, var(--warning) var(--bg-amount), transparent);
    }

    &.danger {
      color: var(--danger);
      background-color: color-mix(in srgb, var(--danger) var(--bg-amount), transparent);
    }
  }
}

/* button.css */
@layer base {
  :is(button, [type=submit], [type=reset], [type=button], a.button), ::file-selector-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    /* height: 2.5rem; */
    padding: var(--space-2) var(--space-4);
    font-size: var(--text-7);
    font-weight: var(--font-medium);
    line-height: var(--leading-normal);
    white-space: nowrap;
    text-decoration: none;
    background-color: var(--primary);
    color: var(--primary-foreground);
    border-radius: var(--radius-medium);
    border: 1px solid;
    border-color: rgb(from #fff r g b / 0.15) rgb(from #000 r g b / 0.2) rgb(from #000 r g b / 0.2) rgb(from #fff r g b / 0.15);
    transition: background-color var(--transition-fast), opacity var(--transition-fast), transform var(--transition-fast);
    cursor: pointer;

    &:hover:not(:disabled) {
      background-color: color-mix(in srgb, var(--primary), white 25%);
    }

    &:active:not(:disabled) {
      transform: translate(1px, 1px);
    }

    &[data-variant="secondary"] {
      background-color: var(--secondary);
      color: var(--secondary-foreground);
      border-color: rgb(from #fff r g b / 0.5) rgb(from #000 r g b / 0.1) rgb(from #000 r g b / 0.1) rgb(from #fff r g b / 0.5);

      &:hover:not(:disabled) {
        background-color: color-mix(in srgb, var(--secondary), black 10%);
      }
    }

    &[data-variant="danger"] {
      background-color: var(--danger);
      color: var(--danger-foreground);

      &:hover:not(:disabled) {
        background-color: color-mix(in srgb, var(--danger), black 15%);
      }
    }

    &.outline {
      background-color: transparent;
      border-color: var(--border);

      &:not([data-variant]) {
        color: var(--foreground);
      }
      &[data-variant="danger"] {
        color: var(--danger);
        border-color: var(--danger);
        &:hover:not(:disabled) {
          background-color: color-mix(in srgb, var(--danger), transparent 90%);
        }
      }
      &[data-variant="secondary"] {
        color: var(--secondary-foreground);
        border-color: var(--secondary);
        &:hover:not(:disabled) {
          background-color: color-mix(in srgb, var(--secondary), transparent 80%);
        }
      }
      &:hover:not(:disabled):not([data-variant]) {
        background-color: var(--accent);
      }
    }

    &.ghost {
      background-color: transparent;
      border-color: transparent;

      &:not([data-variant]) {
        color: var(--foreground);
      }
      &[data-variant="danger"] {
        color: var(--danger);
        &:hover:not(:disabled) {
          background-color: color-mix(in srgb, var(--danger), transparent 90%);
        }
      }
      &[data-variant="secondary"] {
        color: var(--secondary-foreground);
        &:hover:not(:disabled) {
          background-color: color-mix(in srgb, var(--secondary), transparent 80%);
        }
      }
      &:hover:not(:disabled):not([data-variant]) {
        background-color: var(--accent);
      }
    }

    &.small {
      padding: var(--space-1) var(--space-3);
      font-size: var(--text-8);
    }

    &.large {
      height: 3rem;
      padding: 0 var(--space-6);
      font-size: var(--text-regular);
    }

    &.icon {
      width: 2.5rem;
      padding: 0;

      &.small {
        width: 2rem;
      }

      &.large {
        width: 3rem;
      }
    }
  }

  ::file-selector-button {
    background-color: transparent;
    color: var(--foreground);
    border: 1px solid var(--border);
  }
  ::file-selector-button:hover {
    /* pseudoelement:hover can't be nested and has to be a separate block. */
    background-color: var(--accent);
  }
}

@layer components {
  menu.buttons {
    padding-inline-start: 0;
    display: inline-flex;

    & > :is(button, [type=button], [type=submit], [type=reset], a.button) {
      border-radius: 0;

      &:first-child {
        border-start-start-radius: var(--radius-medium);
        border-end-start-radius: var(--radius-medium);
      }

      &:last-child {
        border-start-end-radius: var(--radius-medium);
        border-end-end-radius: var(--radius-medium);
      }

      &:not(:last-child) {
        border-inline-end: 1px solid rgb(from var(--primary-foreground) r g b / 0.2);
      }
    }
  }
}

/* card.css */
@layer components {
  .card {
    background-color: var(--card);
    color: var(--card-foreground);
    border: 1px solid var(--border);
    border-radius: var(--radius-medium);
    box-shadow: var(--shadow-small);
    padding: var(--space-6);
    overflow: hidden;
  }
}

/* dialog.css */
@layer components {
  dialog {
    position: fixed;
    inset: 0;
    z-index: var(--z-modal);
    width: 100%;
    max-width: 32rem;
    max-height: 85vh;
    margin: auto;
    padding: 0;
    background-color: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius-large);
    box-shadow: var(--shadow-large);
    overflow: hidden;

    opacity: 0;
    transform: scale(0.95);
    transition:
      opacity 150ms ease,
      transform 150ms ease,
      overlay 150ms ease allow-discrete,
      display 150ms ease allow-discrete;

    &[open] {
      opacity: 1;
      transform: scale(1);
    }

    @starting-style {
      &[open] {
        opacity: 0;
        transform: scale(0.95);
      }
    }

    &::backdrop {
      background-color: rgb(0 0 0 / 0);
      transition:
        background-color 150ms ease,
        overlay 150ms ease allow-discrete,
        display 150ms ease allow-discrete;
    }

    &[open]::backdrop {
      background-color: rgb(0 0 0 / 0.5);
    }

    @starting-style {
      &[open]::backdrop {
        background-color: rgb(0 0 0 / 0);
      }
    }

    & > header,
    & > form > header {
      display: flex;
      flex-direction: column;
      gap: var(--space-1);
      padding: var(--space-6);
      padding-block-end: 0;

      & > h1, & > h2, & > h3, & > h4, & > h5, & > h6 {
        margin-block-end: 0;
      }

      & > p {
        font-size: var(--text-7);
        color: var(--muted-foreground);
        margin-block-end: 0;
      }
    }

    & > p, & > div, & > section,
    & > form > p, & > form > div, & > form > section {
      padding: var(--space-6);
      overflow-y: auto;
    }

    & > footer,
    & > form > footer {
      display: flex;
      justify-content: flex-end;
      gap: var(--space-2);
      padding: var(--space-6);
      padding-block-start: 0;
    }
  }
}

/* dropdown.css */
@layer components {
  ot-dropdown {
    [popover] {
      position: fixed;
      margin: 0;
      /* padding: var(--space-1); */
      min-width: 12rem;
      background-color: var(--background);
      border: 1px solid var(--border);
      border-radius: var(--radius-medium);
      box-shadow: var(--shadow-medium);
      opacity: 0;
      transform: translateY(-4px);
      transition:
        opacity 150ms ease-out,
        transform 150ms ease-out,
        display 150ms allow-discrete,
        overlay 150ms allow-discrete;

      &:popover-open {
        opacity: 1;
        transform: translateY(0);
      }

      @starting-style {
        &:popover-open {
          opacity: 0;
          transform: translateY(-4px);
        }
      }

      hr {
        margin: var(--space-1) 0;
      }
    }

    [role="menuitem"] {
      display: flex;
      align-items: center;
      justify-content: start;
      gap: var(--space-2);
      width: 100%;
      padding: var(--space-2) var(--space-3);
      font-size: var(--text-7);
      text-align: start;
      color: var(--foreground);
      background: none;
      border: none;
      border-radius: var(--radius-small);
      cursor: pointer;

      &:hover, &:focus {
        background-color: var(--accent);
        outline: none;
      }
    }
  }
}

/* form.css */
@layer base {
  label {
    display: block;
    font-size: var(--text-7);
    font-weight: var(--font-medium);

    &:has(input:where([type=checkbox], [type=radio])) {
      display: inline-flex;
      align-items: center;
      gap: var(--space-2);
      font-weight: var(--font-normal);
    }
  }

  :where(input:not([type=checkbox], [type=radio], [type=range], [type=file], [type=color]), textarea, select) {
    width: 100%;
    margin-block-start: var(--space-1);
    padding: var(--space-2) var(--space-3);
    font-size: var(--text-7);
    line-height: var(--leading-normal);
    background-color: var(--background);
    color: var(--foreground);
    border: 1px solid var(--input);
    border-radius: var(--radius-medium);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);

    &::placeholder {
      color: var(--muted-foreground);
    }

    &:focus {
      outline: none;
      border-color: var(--ring);
      box-shadow: 0 0 0 2px rgb(from var(--ring) r g b / 0.2);
    }

    &:disabled {
      background-color: var(--muted);
    }

    &:is([aria-invalid=true], :user-invalid) {
      border-color: var(--danger);

      &:focus {
        box-shadow: 0 0 0 2px rgb(from var(--danger) r g b / 0.2);
      }
    }
  }

  textarea {
    height: auto;
    min-height: 5rem;
    padding: var(--space-3);
    resize: vertical;
  }

  select {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%2371717a' stroke-width='2'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right var(--space-2) center;
    padding-inline-end: var(--space-6);
  }

  input:where([type=checkbox], [type=radio]) {
    appearance: none;
    width: 1rem;
    height: 1rem;
    margin: 0;
    background-color: var(--background);
    border: 1px solid var(--input);
    transition: background-color var(--transition-fast), border-color var(--transition-fast);

    &:checked {
      background-color: var(--primary);
      border-color: var(--primary);
    }
  }

  input[type=checkbox] {
    border-radius: var(--radius-small);
    position: relative;

    &:checked::after {
      content: "";
      position: absolute;
      inset: 0;
      background-color: var(--primary-foreground);
      mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='4'%3E%3Cpolyline points='20 6 9 17 4 12'/%3E%3C/svg%3E");
      mask-size: 90%;
      mask-position: center;
      mask-repeat: no-repeat;
    }

    &[role=switch] {
      --switch-height: calc(var(--bar-height) * 3);
      --switch-inset: 2px;
      --switch-thumb: calc(var(--switch-height) - var(--switch-inset) * 3);

      width: calc(var(--switch-height) * 2);
      height: var(--switch-height);
      border-radius: var(--radius-full);
      background-color: var(--input);
      position: relative;

      &::before {
        content: "";
        position: absolute;
        top: 50%;
        left: var(--switch-inset);
        transform: translateY(-50%);
        width: var(--switch-thumb);
        height: var(--switch-thumb);
        background-color: var(--background);
        border-radius: var(--radius-full);
        transition: transform var(--transition);
        box-shadow: var(--shadow-small);
      }

      &:checked {
        background-color: var(--primary);

        &::after {
          content: none;
        }

        &::before {
          transform: translateY(-50%) translateX(var(--switch-height));
        }
      }
    }
  }

  input[type=radio] {
    border-radius: var(--radius-full);
    position: relative;

    &:checked::after {
      content: "";
      position: absolute;
      inset: 0;
      background-color: var(--primary-foreground);
      mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3E%3Ccircle cx='8' cy='8' r='4' fill='currentColor'/%3E%3C/svg%3E");
      mask-size: 100%;
      mask-position: center;
      mask-repeat: no-repeat;
    }
  }

  :where(input:where([type=checkbox], [type=radio], [type=range]), select):not(:disabled),
  label:has(input:where([type=checkbox], [type=radio]):not(:disabled)) {
    cursor: pointer;
  }

  input[type=range] {
    width: 100%;
    height: var(--bar-height);
    appearance: none;
    background: var(--muted);
    border-radius: var(--radius-full);

    &::-webkit-slider-thumb {
      appearance: none;
      width: 1.25rem;
      height: 1.25rem;
      background: var(--primary);
      border-radius: var(--radius-full);
      transition: transform var(--transition-fast);

      &:hover {
        transform: scale(1.1);
      }
    }

    &::-moz-range-thumb {
      width: 1.25rem;
      height: 1.25rem;
      background: var(--primary);
      border: none;
      border-radius: var(--radius-full);
    }
  }

  fieldset {
    border: 1px solid var(--border);
    border-radius: var(--radius-medium);
    padding: var(--space-4);
    margin-block-end: var(--space-4);
  }

  legend {
    font-size: var(--text-7);
    font-weight: var(--font-medium);
    padding: 0 var(--space-2);
  }
}

@layer components {
  fieldset.group {
    display: flex;
    align-items: stretch;
    border: none;
    padding: 0;
    margin: 0;

    & > :is(input, textarea, select) {
      flex: 1;
      margin-block-start: 0;
      border-inline-end: 0;
    }

    & > :is(input, textarea, select, button) {
      border-radius: 0;
      &:first-child {
        border-radius: var(--radius-medium) 0 0 var(--radius-medium);
      }
      
      &:last-child {
        border-radius: 0 var(--radius-medium) var(--radius-medium) 0;
      }
    }

    & > legend {
      float: inline-start;
      display: inline-flex;
      align-items: center;
      padding: 0 var(--space-3);
      line-height: var(--leading-normal);
      font-weight: var(--font-normal);
      color: var(--muted-foreground);
      background-color: var(--muted);
      border: 1px solid var(--input);
      border-inline-end: none;
      border-radius: var(--radius-medium) 0 0 var(--radius-medium);
    }
  }

  [data-field] {
    margin-block-end: var(--space-4);

    /* Hint text that succeeds an input with aria-describedby */
    [data-hint], .error {
      font-size: var(--text-8);
      font-weight: var(--font-normal);
      color: var(--muted-foreground);
      margin-block-start: var(--space-1);
    }

    .error {
      display: none;
    }

    /* Reveal error on data-field="error" */
    &[data-field="error"] .error {
      display: block;
      color: var(--danger);
    }
  }
}

/* grid.css */
@layer components {
  :root {
    --grid-cols: 12;
    --grid-gap: 1.5rem;
    --container-max: 1280px;
    --container-pad: 1rem;
  }

  .container {
    width: 100%;
    max-width: var(--container-max);
    margin-inline: auto;
    padding-inline: var(--container-pad);
  }

  .row {
    display: grid;
    grid-template-columns: repeat(var(--grid-cols), 1fr);
    gap: var(--grid-gap);
    width: 100%;
  }

  /* Column spans using CSS custom property */
  .col, [class*="col-"] { grid-column-end: span var(--span, var(--grid-cols)); }
  
  .col-1  { --span: 1; }
  .col-2  { --span: 2; }
  .col-3  { --span: 3; }
  .col-4  { --span: 4; }
  .col-5  { --span: 5; }
  .col-6  { --span: 6; }
  .col-7  { --span: 7; }
  .col-8  { --span: 8; }
  .col-9  { --span: 9; }
  .col-10 { --span: 10; }
  .col-11 { --span: 11; }
  .col-12 { --span: 12; }

  /* Offsets via grid-column-start */
  .offset-1  { grid-column-start: 2; }
  .offset-2  { grid-column-start: 3; }
  .offset-3  { grid-column-start: 4; }
  .offset-4  { grid-column-start: 5; }
  .offset-5  { grid-column-start: 6; }
  .offset-6  { grid-column-start: 7; }

  .col-end {
    grid-column-start: span var(--span, 1);
    grid-column-end: -1;
  }

  /* Responsive: stack on mobile */
  @media (max-width: 768px) {
    .row {
      --grid-cols: 4;
      --grid-gap: 1rem;
    }
    .col, [class*="col-"] {
      --span: 4;
    }
    [class*="offset-"] {
      grid-column-start: auto;
    }
  }
}

/* progress.css */
@layer base {
  progress {
    appearance: none;
    width: 100%;
    height: var(--bar-height);
    border: none;
    border-radius: var(--radius-full);
    overflow: hidden;
    background-color: var(--muted);

    &::-webkit-progress-bar {
      background-color: var(--muted);
      border-radius: var(--radius-full);
    }

    &::-webkit-progress-value {
      background-color: var(--primary);
      border-radius: var(--radius-full);
      transition: width var(--transition);
    }

    &::-moz-progress-bar {
      background-color: var(--primary);
      border-radius: var(--radius-full);
    }
  }

  meter {
    appearance: none;
    width: 100%;
    height: var(--bar-height);
    border: none;
    border-radius: var(--radius-full);
    overflow: hidden;
    background: var(--muted);

    &::-webkit-meter-bar {
      background: var(--muted);
      border: none;
      border-radius: var(--radius-full);
      height: var(--bar-height);
    }

    &::-webkit-meter-optimum-value,
    &::-webkit-meter-suboptimum-value,
    &::-webkit-meter-even-less-good-value {
      border-radius: var(--radius-full);
    }

    &::-webkit-meter-optimum-value {
      background: var(--success);
    }

    &::-webkit-meter-suboptimum-value {
      background: var(--warning);
    }

    &::-webkit-meter-even-less-good-value {
      background: var(--danger);
    }

    &::-moz-meter-bar {
      background: var(--success);
      border-radius: var(--radius-full);
    }

    &:-moz-meter-sub-optimum::-moz-meter-bar {
      background: var(--warning);
    }

    &:-moz-meter-sub-sub-optimum::-moz-meter-bar {
      background: var(--danger);
    }
  }
}

/* sidebar.css */
@layer components {
  :root {
    --topnav-height: var(--space-12);
    --sidebar-width: 14rem;
  }

  [data-sidebar-layout] {
    --topnav-offset: 0px;
    --topnav-scroll-offset: 0px;

    display: grid;
    grid-template-columns: var(--sidebar-width) 1fr;
    min-height: 100dvh;
    gap: var(--space-4);

    &:has(nav[data-topnav]) {
      --topnav-offset: var(--topnav-height);
      --topnav-scroll-offset: calc(var(--topnav-height) + var(--space-6));
    }

    > main {
      min-width: 0;
      margin-block-start: var(--topnav-offset);

      [id] {
        scroll-margin-block-start: var(--topnav-scroll-offset);
      }
    }

    > aside[data-sidebar] {
      position: sticky;
      top: var(--topnav-offset);
      z-index: 1;
      height: calc(100dvh - var(--topnav-offset));
      align-self: start;
      background-color: var(--background);
      border-inline-end: 1px solid var(--border);
      display: flex;
      flex-direction: column;
      width: var(--sidebar-width);

      > :is(header, footer) {
        flex-shrink: 0;
        padding: var(--space-3);
      }

      > footer {
        margin-block-start: auto;
      }

      > nav {
        flex: 1;
        min-height: 0;
        overflow-y: auto;
        padding: var(--space-3) var(--space-2);

        ul {
          list-style: none;
          padding: 0;
          margin: 0;
          display: flex;
          flex-direction: column;
          gap: var(--space-1);

          li {
            margin: 0;
          }
        }

        a {
          display: flex;
          gap: var(--space-2);
          padding: var(--space-1) var(--space-3);
          font-size: var(--text-7);
          color: var(--foreground);
          text-decoration: none;
          border-radius: var(--radius-small);
          transition: background-color var(--transition-fast);

          &:is(:hover, [aria-current]) {
            background-color: var(--accent);
          }
        }

        details {
          border: none;
          overflow: visible;

          & + details { margin-top: 0; }
          &[open] summary { border-bottom: none; }
          > ul { margin-inline-start: var(--space-4); padding: var(--space-1) 0; }
        }

        summary {
          justify-content: flex-start;
          gap: var(--space-2);
          padding: var(--space-2) var(--space-3);
          font-size: var(--text-7);
          font-weight: var(--font-medium);
          color: var(--foreground);
          border-radius: var(--radius-small);

          &::after {
            width: 0.75rem;
            height: 0.75rem;
            margin-inline-start: auto;
          }
        }
      }
    }
  }

  nav[data-topnav] {
    position: fixed;
    inset-block-start: 0;
    inset-inline: 0;
    z-index: 5;
    min-height: var(--topnav-height);
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-2) var(--space-4);
    background-color: var(--background);
    border-bottom: 1px solid var(--border);
    box-shadow: var(--shadow-small);
  }

  :is([data-sidebar-toggle], [data-sidebar-header]) {
    display: none;
  }

  [data-sidebar-toggle] {
    padding: 0 var(--space-1);
    background: none;
    border: 1px solid var(--border);
    border-radius: var(--radius-small);
    cursor: pointer;
  }

  [data-sidebar-layout="always"] [data-sidebar-toggle] {
    display: inline-block;
  }

  [data-sidebar-layout="always"] {
    transition: grid-template-columns var(--transition);

    > aside[data-sidebar] {
      transform: translateX(0);
      opacity: 1;
      transition: transform var(--transition), opacity var(--transition), visibility var(--transition);
    }
  }

  [data-sidebar-layout="always"][data-sidebar-open] {
    grid-template-columns: 0px 1fr;
    gap: 0;

    > aside[data-sidebar] {
      overflow: hidden;
      min-width: 0;
      transform: translateX(-100%);
      opacity: 0;
      visibility: hidden;
      border-inline-end: none;
    }
  }

  @media (max-width: 768px) {
    [data-sidebar-layout] {
      grid-template-columns: 1fr;

      > aside[data-sidebar] {
        position: fixed;
        top: var(--topnav-offset);
        left: 0;
        height: calc(100dvh - var(--topnav-offset));
        width: 16rem;
        transform: translateX(-100%);
        transition: transform var(--transition);
        box-shadow: var(--shadow-large);
      }

      &[data-sidebar-open] > aside[data-sidebar] {
        transform: translateX(0);
      }
    }
    [data-sidebar-layout="always"][data-sidebar-open] {
      grid-template-columns: 1fr;
      gap: var(--space-4);

      > aside[data-sidebar] {
        opacity: 1;
        visibility: visible;
        transform: translateX(0);
      }
    }

    [data-sidebar-toggle] { display: inline-block; }

    [data-sidebar-header] {
      display: flex;
      align-items: center;
      gap: var(--space-3);
      padding: var(--space-3) var(--space-4);
      border-bottom: 1px solid var(--border);
    }
  }
}

/* skeleton.css */
@layer components {
  [role="status"].skeleton {
    margin-block-end: var(--space-3);
    background: var(--muted);
    border-radius: var(--radius-medium);
    animation: shimmer 2s infinite;
    background-size: 200% 100%;
    background-image: linear-gradient(
      90deg,
      var(--muted) 0%,
      color-mix(in srgb, var(--muted) 30%, white) 30%,
      var(--muted) 100%
    );

    [data-theme="dark"] & {
      background-image: linear-gradient(
        90deg,
        var(--muted) 0%,
        color-mix(in srgb, var(--muted) 90%, var(--foreground)) 90%,
        var(--muted) 100%
      );
    }

    &.box {
      width: 4rem;
      height: 4rem;
    }

    &.line {
      height: 1rem;
      width: 100%;
    }
  }

  [role="status"].skeleton:last-child {
    margin-block-end: 0;
  }

  @keyframes shimmer {
    from { background-position: 200% 0; }
    to { background-position: -200% 0; }
  }
}

/* spinner.css */
@layer components {
  .spinner {
    width: 1.5rem;
    height: 1.5rem;
    border: 2px solid var(--muted);
    border-top-color: var(--primary);
    border-radius: var(--radius-full);
    animation: spin 1s linear infinite;

    &.small {
      width: 1rem;
      height: 1rem;
    }

    &.large {
      width: 2rem;
      height: 2rem;
      border-width: 3px;
    }
  }

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

/* table.css */
@layer base {
  table {
    border-collapse: collapse;
    table-layout: fixed;
    width: 100%;
    font-size: var(--text-7);
  }

  thead {
    border-bottom: 1px solid var(--border);
  }

  th, td {
    overflow-wrap: break-word;
  }

  th {
    padding: var(--space-3) var(--space-2);
    text-align: start;
    font-weight: var(--font-medium);
    color: var(--muted-foreground);
  }

  td {
    padding: var(--space-3) var(--space-2);
  }

  tbody tr {
    border-bottom: 1px solid var(--border);
    transition: background-color var(--transition-fast);

    &:last-child {
      border-bottom: none;
    }

    &:hover {
      background-color: rgb(from var(--muted) r g b / 0.5);
    }
  }
}

/* tabs.css */
@layer components {
  [role="tablist"] {
    display: inline-flex;
    align-items: center;
    gap: var(--space-1);
    padding: var(--space-1);
    background-color: var(--muted);
    border-radius: var(--radius-medium);
  }

  [role="tab"] {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-2) var(--space-3);
    font-size: var(--text-7);
    font-weight: var(--font-medium);
    white-space: nowrap;
    background-color: transparent;
    color: var(--foreground);
    border: none;
    border-radius: calc(var(--radius-medium) - 2px);
    cursor: pointer;
    transition: background-color var(--transition-fast), color var(--transition-fast);

    &:hover {
      color: var(--muted-foreground);
    }

    &[aria-selected="true"] {
      background-color: var(--background);
      box-shadow: var(--shadow-small);
    }
  }

  [role="tabpanel"] {
    padding: var(--space-4) 0;

    &:focus-visible {
      outline: none;
    }
  }
}

/* toast.css */
@layer components {
  .toast-container {
    position: fixed;
    display: flex;
    flex-direction: column;
    pointer-events: none;
    margin: 0;
    padding: 0;
    border: none;
    background: transparent;

    overflow: visible;

    &::backdrop {
      display: none;
    }

    &[data-placement="top-left"] {
      inset: var(--space-4) auto auto var(--space-4);
    }

    &[data-placement="top-center"] {
      inset: var(--space-4) auto auto 50%;
      transform: translateX(-50%);
    }

    &[data-placement="top-right"] {
      inset: var(--space-4) var(--space-4) auto auto;
    }

    &[data-placement="bottom-left"] {
      inset: auto auto var(--space-4) var(--space-4);
      flex-direction: column-reverse;
    }

    &[data-placement="bottom-center"] {
      inset: auto auto var(--space-4) 50%;
      transform: translateX(-50%);
      flex-direction: column-reverse;
    }

    &[data-placement="bottom-right"] {
      inset: auto var(--space-4) var(--space-4) auto;
      flex-direction: column-reverse;
    }
  }

  .toast {
    padding: var(--space-5) var(--space-4);
    max-width: 28rem;
    min-width: 20rem;
    pointer-events: auto;
    background-color: var(--card);
    border: 1px solid var(--border);
    border-inline-start-width: var(--space-1);
    border-inline-start-style: solid;
    border-radius: var(--radius-medium);
    box-shadow: var(--shadow-small);
    transition: opacity 150ms, transform 150ms, margin 150ms;
    line-height: 1;

    .toast-title {
      font-weight: 600;
      margin: 0 0 var(--space-3) 0;
    }
    .toast-message {
      color: var(--muted-foreground);
    }

    &[data-variant="success"] {
      border-inline-start-color: var(--success);
    }

    &[data-variant="danger"] {
      border-inline-start-color: var(--danger);
    }

    &[data-variant="warning"] {
      border-inline-start-color: var(--warning);
    }

    &[data-variant="info"] {
      border-inline-start-color: var(--secondary);
    }

    & > [data-close] {
      margin-inline-start: auto;
      background: none;
      border: none;
      padding: 0;
      cursor: pointer;
      opacity: 0.5;

      &:hover {
        opacity: 1;
      }
    }

    margin: var(--space-2) 0;

    &[data-entering] {
      opacity: 0;
      transform: translateY(-1rem);
    }

    &[data-exiting] {
      opacity: 0;
      margin: 0;
      padding-block: 0;
      max-height: 0;
      overflow: hidden;
      transition: opacity 200ms, margin 200ms, padding 200ms, max-height 200ms;
    }
  }
}

/* tooltip.css */
@layer components {
  [data-tooltip] {
    position: relative;
  }

  [data-tooltip]::before,
  [data-tooltip]::after {
    position: absolute;
    inset-inline-start: 50%;
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-fast), transform var(--transition-fast), visibility var(--transition-fast);
    pointer-events: none;
    z-index: 1000;
  }

  /* Text */
  [data-tooltip]::after {
    content: attr(data-tooltip);
    inset-block-end: calc(100% + 10px);
    transform: translateX(-50%) translateY(4px);
    padding: var(--space-2) var(--space-3);
    font-size: var(--text-7);
    line-height: 1;
    white-space: nowrap;
    background: var(--foreground);
    color: var(--background);
    border-radius: var(--radius-medium);
  }

  /* Arrow */
  [data-tooltip]::before {
    content: '';
    inset-block-end: calc(100% - 5px);
    transform: translateX(-50%) translateY(4px);
    border: 8px solid transparent;
    border-top-color: var(--foreground);
  }

  [data-tooltip]:is(:hover, :focus-visible)::before,
  [data-tooltip]:is(:hover, :focus-visible)::after {
    opacity: 1;
    visibility: visible;
    transition-delay: 700ms;
    transform: translateX(-50%) translateY(0);
  }
}

/* utilities.css */
@layer utilities {
  [hidden] {
    display: none !important;
  }

  .sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
  }

  .text-left { text-align: start; }
  .text-center { text-align: center; }
  .text-right { text-align: end; }
  .text-light { color: var(--muted-foreground); }
  .text-lighter { color: var(--muted-foreground); }

  .flex { display: flex; }
  .flex-col { flex-direction: column; }
  .items-center { align-items: center; }
  .justify-center { justify-content: center; }
  .justify-between { justify-content: space-between; }

  /* Bootstrap inspired. */
  .hstack {
    display: flex;
    align-items: center;
    gap: var(--space-3);
  }
  .vstack {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
  }

  .gap-1 { gap: var(--space-1); }
  .gap-2 { gap: var(--space-2); }
  .gap-4 { gap: var(--space-4); }

  .mt-2 { margin-block-start: var(--space-2); }
  .mt-4 { margin-block-start: var(--space-4); }
  .mt-6 { margin-block-start: var(--space-6); }

  .mb-2 { margin-block-end: var(--space-2); }
  .mb-4 { margin-block-end: var(--space-4); }
  .mb-6 { margin-block-end: var(--space-6); }
  .p-4 { padding: var(--space-4); }

  .w-100 { width: 100%; }
}

ul, ol {
  &.unstyled {
    list-style: none;
    padding-inline-start: 0;
    margin-inline-start: 0;
  }
}