/**
 * Copyright Aquera Inc 2026
 *
 * This source code is licensed under the BSD-3-Clause license found in the
 * LICENSE file in the root directory of this source tree.
 */

import { css } from 'lit';

/**
 * OTP input CSS
 */
export const styles = css`
  :host {
    display: block;
    --ng-private-outline-transparent: var(--ng-border-width-1) solid transparent;
    -webkit-font-smoothing: var(--nile-webkit-font-smoothing, var(--ng-webkit-font-smoothing, antialiased));
    -moz-osx-font-smoothing: var(--nile-moz-osx-font-smoothing, var(--ng-moz-osx-font-smoothing, grayscale));
    text-rendering: var(--nile-text-rendering, var(--ng-text-rendering, optimizeLegibility));
  }

  .form-control {
    display: flex;
    flex-direction: column;
    gap: var(--nile-spacing-sm, var(--ng-spacing-1-5));
    align-items: flex-start;
  }

  .form-control .form-control__label {
    display: none;
  }

  .form-control--has-label .form-control__label {
    display: inline-block;
    color: var(--nile-colors-dark-900, var(--ng-colors-text-secondary-700));
    font-family: var(--nile-font-family-serif, var(--ng-font-family-body ));
    font-size: var(--nile-type-scale-3, var(--ng-font-size-text-sm ));
    font-style: normal;
    font-weight: var(--nile-font-weight-medium, var(--ng-font-weight-500 ));
    line-height: var(--nile-type-scale-6, var(--ng-line-height-text-sm ));
    letter-spacing: 0.2px;
  }

  :host([required]) .form-control--has-label .form-control__label::after {
    content: '*';
    margin-inline-start: -2px;
    color: var(--nile-colors-red-700, var(--ng-colors-text-error-primary-600));
  }

  .otp {
    position: relative;
    display: flex;
    align-items: center;
    gap: var(--nile-spacing-md, var(--ng-spacing-2));
    width: fit-content;
    max-width: 100%;
  }

  /* ---- Base cell ---- */

  .otp__cell {
    box-sizing: border-box;
    width: var(--nile-spacing-5xl, var(--ng-spacing-10));
    height: var(--nile-spacing-5xl, var(--ng-spacing-10));
    min-height: var(--nile-spacing-5xl, var(--ng-spacing-10));
    padding: var(--nile-spacing-xxs, var(--ng-spacing-0-5)) var(--nile-spacing-md, var(--ng-spacing-2));
    border: 1px solid var(--nile-colors-border-field, var(--ng-colors-border-primary));
    border-radius: var(--nile-radius-radius-2xl, var(--ng-radius-lg));
    background-color: var(--nile-colors-white-base, var(--ng-colors-bg-primary));
    box-shadow: var(--nile-box-shadow-1, var(--ng-shadow-xs));
    outline: var(--nile-outline-none, var(--ng-private-outline-transparent));
    color: var(--nile-colors-dark-500, var(--ng-colors-text-placeholder-subtle));
    text-align: center;
    font-family: var(--nile-font-family, var(--ng-font-family-display));
    font-size: var(--nile-type-scale-4, var(--ng-font-size-text-md));
    font-style: normal;
    font-weight: var(--nile-font-weight-medium, var(--ng-font-weight-500));
    line-height: var(--nile-type-scale-4, var(--ng-line-height-text-md));
    letter-spacing: 0.2px;
    overflow: clip;
    caret-color: transparent;
    cursor: pointer;
    transition: 150ms color, 150ms border, 150ms box-shadow, 150ms background-color, 150ms outline;
  }

  .otp__cell[type='password'] {
    font-family: caption;
    letter-spacing: 0;
  }
  /* ---- Hover (mirrors .input--standard:hover) ---- */

  .otp:not(.otp--disabled):not(.otp--readonly) .otp__cell:hover {
    border-color: var(--nile-colors-dark-900, var(--ng-colors-border-neutral));
  }

  .otp--warning:not(.otp--disabled) .otp__cell:hover {
    border-color: var(--nile-colors-dark-900, var(--ng-colors-border-warning));
  }

  .otp--error:not(.otp--disabled) .otp__cell:hover {
    border-color: var(--nile-colors-dark-900, var(--ng-colors-border-error));
  }

  .otp--success:not(.otp--disabled) .otp__cell:hover {
    border-color: var(--nile-colors-dark-900, var(--ng-colors-border-success));
  }

  /* ---- Focus / active cell (mirrors .input--standard.input--focused) ---- */

  .otp__cell:focus {
    outline: none;
    background-color: var(--nile-colors-white-base, var(--ng-colors-bg-primary));
    border-color: var(--nile-colors-primary-500, var(--ng-colors-border-brand ));
    box-shadow: var(--nile-input-shadow-standard-focused-not-disabled, var(--ng-box-shadow-1));
  }

  .otp__cell--active {
    position: relative;
    cursor: text;
    caret-color: auto;
    background-color: var(--nile-colors-white-base, var(--ng-colors-bg-primary ));
    border-color: var(--nile-colors-primary-500, var(--ng-colors-border-brand ));
    box-shadow: var(--nile-input-shadow-standard-focused-not-disabled, var(--ng-box-shadow-1));
  }

  .otp__cell--active::before {
    content: "";
    position: absolute;
    inset: 0;
    pointer-events: none;
    border-radius: inherit;
    box-shadow: inset 0 0 0 1px var(--nile-colors-primary-500, var(--ng-colors-border-brand));
  }

  .otp--warning .otp__cell:focus,
  .otp--warning .otp__cell--active {
    border-color: var(--nile-colors-primary-500, var(--ng-colors-border-warning));
    box-shadow: var(--nile-input-shadow-standard-focused-not-disabled, var(--ng-box-shadow-1));
    outline: var(--nile-border-width-1, var(--ng-border-width-1)) solid var(--nile-outline-none, var(--ng-colors-border-warning));
  }

  .otp--warning .otp__cell--active::before {
    box-shadow: inset 0 0 0 1px var(--nile-colors-yellow-500, var(--ng-colors-border-warning));
  }

  .otp--success .otp__cell:focus,
  .otp--success .otp__cell--active {
    border-color: var(--nile-colors-primary-500, var(--ng-colors-border-success));
    box-shadow: var(--nile-input-shadow-standard-focused-not-disabled, var(--ng-box-shadow-1));
    outline: var(--nile-border-width-1, var(--ng-border-width-1)) solid var(--nile-outline-none, var(--ng-colors-border-success));
  }

  .otp--success .otp__cell--active::before {
    box-shadow: inset 0 0 0 1px var(--nile-colors-green-500, var(--ng-colors-border-success));
  }

  .otp--error .otp__cell:focus,
  .otp--error .otp__cell--active {
    border-color: var(--nile-colors-primary-500, var(--ng-colors-border-error));
    box-shadow: var(--nile-input-shadow-standard-focused-not-disabled, var(--ng-box-shadow-1));
    outline: var(--nile-border-width-1, var(--ng-border-width-1)) solid var(--nile-outline-none, var(--ng-colors-border-error));
  }

  .otp--error .otp__cell--active::before {
    box-shadow: inset 0 0 0 1px var(--nile-colors-red-500, var(--ng-colors-border-error));
  }

  .otp__cell::selection {
    background-color: var(--nile-colors-primary-600, var(--ng-colors-bg-brand-primary ));
    color: var(--nile-colors-white-base, var(--ng-colors-fg-white));
  }

  .otp__cell::placeholder {
    color: var(--nile-colors-dark-500, var(--ng-colors-text-placeholder-subtle));
    opacity: 0.9;
    font-weight: var(--nile-font-weight-medium, var(--ng-font-weight-500));
  }

  /* ---- Separator ---- */

  .otp__separator {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    color: var(--nile-colors-dark-500, var(--ng-colors-text-placeholder-subtle));
    font-family: var(--nile-font-family, var(--ng-font-family-display ));
    font-size: var(--nile-type-scale-7, var(--ng-font-size-text-xl));
    font-weight: var(--nile-font-weight-medium, var(--ng-font-weight-500));
    line-height: var(--nile-type-scale-7, var(--ng-line-height-text-xl));
    user-select: none;
  }

  /* ---- State: warning ---- */

  .otp--warning .otp__cell {
    border-color: var(--nile-colors-yellow-500, var(--ng-colors-border-warning-subtle ));
  }

  /* ---- State: error ---- */

  .otp--error .otp__cell {
    border-color: var(--nile-colors-red-500, var(--ng-colors-border-error-subtle ));
  }

  /* ---- State: success ---- */

  .otp--success .otp__cell {
    border-color: var(--nile-colors-green-500, var(--ng-colors-border-success-subtle));
  }

  /* ---- State: readonly ---- */

  .otp--readonly .otp__cell {
    cursor: default;
  }

  /* ---- State: disabled (mirrors .input--standard.input--disabled) ---- */

  .otp--disabled .otp__cell {
    cursor: not-allowed;
    color: var(--nile-colors-neutral-500, var(--ng-colors-text-disabled ));
    border-color: var(--nile-colors-neutral-500, var(--ng-colors-border-disabled ));
    background-color: var(--nile-colors-white-base, var(--ng-colors-bg-disabled-subtle ));
  }

  .otp--disabled .otp__cell::placeholder {
    color: var(--nile-input-standard-disabled-placeholder-font-color, var(--ng-colors-text-disabled ));
  }

  /* ---- Hidden value input ---- */

  .otp__value-input {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    padding: 0;
    margin: 0;
    opacity: 0;
    z-index: -1;
    pointer-events: none;
  }

  /* ---- Help text ---- */

  .form-control__help-text {
    color: var(--nile-colors-dark-900, var(--ng-colors-text-tertiary-600));
    font-family: var(--nile-font-family-serif, var(--ng-font-family-body ));
    font-size: var(--nile-type-scale-2, var(--ng-font-size-text-sm ));
    font-style: normal;
    font-weight: var(--nile-font-weight-regular, var(--ng-font-weight-400 ));
    line-height: var(--nile-type-scale-2, var(--ng-line-height-text-sm ));
    letter-spacing: 0.2px;
  }

  /* ---- Error message ---- */

  .form-control__error-message {
    display: block;
    color: var(--nile-colors-red-700, var(--ng-colors-text-error-primary-600));
    margin-top: var(--nile-spacing-lg, var(--ng-spacing-1-5 ));
    font-size: var(--nile-type-scale-2, var(--ng-font-size-text-sm ));
    font-style: normal;
    line-height: var(--nile-form-error-text-line-height, var(--ng-line-height-text-sm));
    letter-spacing: 0.2px;
  }
`;

export default [styles];