import styled, { css } from 'styled-components';
import { getMediaQuery, applyDarkMode } from '../../utils';

/* ─── Shared CSS helpers ──────────────────────────────────────────────── */

const inputBorderStyles = ($hasError?: boolean) => css`
  border: 1px solid ${$hasError ? '#cc0000' : '#cccccc'};

  &:focus {
    border-color: ${$hasError ? '#cc0000' : '#005c8a'};
  }
`;

const INPUT_DARK_MODE = `
  background-color: #2a2a2a !important;
  color: #cccccc !important;
  border-color: #555555 !important;

  &:focus {
    border-color: #74bade !important;
  }
`;

export const FormOverlay = styled.div<{ isApp?: boolean }>`
  position: fixed;
  top: ${({ isApp }) => (isApp ? '0' : '60px')};
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(0, 0, 0, 0.5);
  z-index: 999;
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 16px;
  overflow: hidden;
  overscroll-behavior: none;

  ${getMediaQuery('xs', 'md')} {
    top: 0;
    padding: 0;
    align-items: center;
  }
`;

export const FormContainer = styled.div<{ isApp?: boolean }>`
  background-color: #ffffff;
  max-width: 640px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  overscroll-behavior: contain;
  padding: 32px;
  position: relative;
  margin: auto;

  ${getMediaQuery('xs', 'md')} {
    padding: 48px 16px 48px 16px;
    padding-top: 48px;
    max-width: 100%;
    max-height: 100vh;
    -webkit-overflow-scrolling: touch;
  }

  ${({ isApp }) =>
    applyDarkMode(
      `
        background-color: #1d1d1b !important;
        color: #cccccc !important;
    `,
      isApp
    )};
`;

export const CloseButton = styled.button`
  position: absolute;
  top: 16px;
  right: 16px;
  background: none;
  border: none;
  cursor: pointer;
  font-size: 24px;
  color: #333333;
  padding: 4px;
  line-height: 1;

  &:hover {
    color: #000000;
  }

  ${getMediaQuery('xs', 'md')} {
    font-size: 22px;
  }
`;

export const FormTitle = styled.h2<{ isApp?: boolean }>`
  font-family: 'Times Modern';
  font-weight: 700;
  font-size: 28px;
  line-height: 1.2;
  color: #1d1d1b;
  margin: 0 0 8px 0;

  ${getMediaQuery('xs', 'md')} {
    font-size: 24px;
  }

  ${({ isApp }) =>
    applyDarkMode(
      `
        color: #ffffff !important;
    `,
      isApp
    )};
`;

export const FormSubtitle = styled.p<{ isApp?: boolean }>`
  font-family: 'Roboto';
  font-size: 16px;
  font-weight: 500;
  line-height: 1.5;
  color: #333333;
  margin: 0;

  ${getMediaQuery('xs', 'md')} {
    margin: 0 0 16px 0;
  }

  ${({ isApp }) =>
    applyDarkMode(
      `
        color: #cccccc !important;
    `,
      isApp
    )};
`;

export const FormRequiredNote = styled(FormSubtitle)`
  margin-top: 12px;
  margin-bottom: 24px;
`;

/* Step indicator */
export const StepIndicator = styled.div`
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  margin-bottom: 32px;

  ${getMediaQuery('xs', 'md')} {
    margin-bottom: 32px;
    gap: 0;
    width: 100%;
    justify-content: space-between;
  }
`;

export const StepDot = styled.div<{ $active: boolean; $completed: boolean }>`
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: 'Roboto';
  font-weight: 500;
  font-size: 14px;
  transition: all 0.2s ease;

  ${getMediaQuery('xs', 'md')} {
    width: 28px;
    height: 28px;
  }

  ${({ $active, $completed }) =>
    $completed
      ? css`
          background-color: #005c8a;
          color: #ffffff;
        `
      : $active
        ? css`
            background-color: #005c8a;
            color: #ffffff;
          `
        : css`
            background-color: #e4e4e4;
            color: #666666;
          `};
`;

export const StepLine = styled.div<{ $completed: boolean }>`
  width: 40px;
  height: 2px;
  background-color: ${({ $completed }) => ($completed ? '#005c8a' : '#e4e4e4')};
  transition: background-color 0.2s ease;

  ${getMediaQuery('xs', 'md')} {
    width: auto;
    flex: 1;
    margin: 0 4px;
  }
`;

export const StepGroup = styled.div`
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
`;

export const StepLabel = styled.div<{ $active: boolean }>`
  font-family: 'Roboto';
  font-weight: 500;
  font-size: 14px;
  color: ${({ $active }) => ($active ? '#005c8a' : '#999999')};
  text-align: center;
  margin-top: 6px;
  white-space: nowrap;
`;

/* Form fields */
export const FieldRow = styled.div`
  display: flex;
  align-items: stretch;
  gap: 16px;

  ${getMediaQuery('xs', 'md')} {
    flex-direction: column;
    gap: 0;
  }
`;

export const Field = styled.div<{ $flex?: number; $applyMinWidth?: boolean }>`
  flex: ${({ $flex }) => $flex || 1};
  min-width: 0;
  ${({ $applyMinWidth }) =>
    $applyMinWidth &&
    `
      min-width: 210px;
    `} margin-bottom: 20px;
  padding-bottom: 18px;
  position: relative;
  display: flex;
  flex-direction: column;

  input,
  select {
    margin-top: auto;
  }

  ${getMediaQuery('xs', 'md')} {
    margin-bottom: 16px;
    width: 100%;
  }
`;

export const Label = styled.label<{ isApp?: boolean }>`
  display: block;
  font-family: 'Roboto';
  font-weight: 500;
  font-size: 16px;
  line-height: 1.5;
  color: #333333;
  margin-bottom: 4px;

  ${getMediaQuery('xs', 'md')} {
    min-height: auto;
  }

  ${({ isApp }) =>
    applyDarkMode(
      `
        color: #cccccc !important;
    `,
      isApp
    )};
`;

export const Required = styled.span`
  color: #333333;
  margin-left: 2px;
`;

export const InputWrapper = styled.div`
  position: relative;
  width: 100%;
  flex: 1;
  display: flex;
`;

export const ErrorIcon = styled.div`
  position: absolute;
  right: 10px;
  bottom: 0.5px;
  transform: translateY(-50%);
  display: flex;
  align-items: center;
  justify-content: center;
  pointer-events: none;

  svg {
    width: 22px;
    height: 22px;
    color: #d60000;
    background-color: #fff;
  }
`;

export const Input = styled.input<{ $hasError?: boolean; isApp?: boolean }>`
  width: 100%;
  padding: ${({ $hasError }) =>
    $hasError ? '10px 40px 10px 12px' : '10px 12px'};
  font-family: 'Roboto';
  font-size: 16px;
  line-height: 1.5;
  color: #333333;
  background-color: #ffffff;
  ${({ $hasError }) => inputBorderStyles($hasError)} outline: none;
  transition: border-color 0.2s ease;
  box-sizing: border-box;

  &[type='date'] {
    display: block;
    width: 100%;
    max-width: 100%;
    min-width: 0;
    max-height: 46px;
    box-sizing: border-box;
    -webkit-appearance: none;
    appearance: none;
  }

  &::placeholder {
    color: #999999;
    font-size: 14px;
  }

  ${({ isApp }) => applyDarkMode(INPUT_DARK_MODE, isApp)};
`;

export const Select = styled.select<{ $hasError?: boolean; isApp?: boolean }>`
  width: 100%;
  padding: ${({ $hasError }) =>
    $hasError ? '10px 40px 10px 12px' : '10px 12px'};
  font-family: 'Times Digital W04 Regular';
  font-size: 16px;
  line-height: 1.5;
  color: #333333;
  background-color: #ffffff;
  ${({ $hasError }) => inputBorderStyles($hasError)} outline: none;
  transition: border-color 0.2s ease;
  appearance: none;
  background-image: url("data:image/svg+xml;charset=UTF-8,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23333' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3e%3cpolyline points='6 9 12 15 18 9'%3e%3c/polyline%3e%3c/svg%3e");
  background-repeat: no-repeat;
  background-position: right 12px center;
  background-size: 16px;
  box-sizing: border-box;

  ${({ isApp }) => applyDarkMode(INPUT_DARK_MODE, isApp)};
`;

export const CustomSelectContainer = styled.div`
  position: relative;
  width: 100%;
  margin-top: auto;
`;

export const CustomSelectTrigger = styled.button<{
  $hasError?: boolean;
  isApp?: boolean;
  $isPlaceholder?: boolean;
}>`
  width: 100%;
  padding: 10px 12px;
  font-family: 'Roboto';
  font-size: 16px;
  line-height: 1.5;
  color: ${({ $isPlaceholder }) => ($isPlaceholder ? '#999999' : '#333333')};
  background-color: #ffffff;
  ${({ $hasError }) => inputBorderStyles($hasError)} text-align: left;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  box-sizing: border-box;
  outline: none;
  border-radius: 0;
  position: relative;

  ${({ isApp }) =>
    applyDarkMode(
      `
        background-color: #2a2a2a !important;
        color: #cccccc !important;
        border-color: #555555 !important;
      `,
      isApp
    )};
`;

export const CustomSelectChevron = styled.span<{ $isOpen?: boolean }>`
  display: flex;
  align-items: center;
  flex-shrink: 0;
  transition: transform 0.2s ease;
  transform: ${({ $isOpen }) => ($isOpen ? 'rotate(180deg)' : 'rotate(0deg)')};
  pointer-events: none;
`;

export const CustomSelectOptionsList = styled.ul`
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  background-color: #ffffff;
  border: 1px solid #cccccc;
  border-top: none;
  z-index: 200;
  list-style: none;
  margin: 0;
  padding: 0;
  max-height: 240px;
  overflow-y: auto;
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
`;

export const CustomSelectOption = styled.li<{ $selected?: boolean }>`
  padding: 10px 12px;
  font-family: 'Roboto';
  font-size: 16px;
  line-height: 1.5;
  color: #333333;
  cursor: pointer;
  background-color: ${({ $selected }) => ($selected ? '#e8f3f9' : '#ffffff')};

  &:hover {
    background-color: rgb(245, 245, 245);
  }
`;

export const TextArea = styled.textarea<{
  $hasError?: boolean;
  isApp?: boolean;
}>`
  width: 100%;
  padding: 10px 12px;
  font-family: 'Times Digital W04 Regular';
  font-size: 16px;
  line-height: 1.5;
  color: #333333;
  background-color: #ffffff;
  ${({ $hasError }) => inputBorderStyles($hasError)} outline: none;
  transition: border-color 0.2s ease;
  resize: vertical;
  min-height: 100px;
  box-sizing: border-box;

  ${({ isApp }) => applyDarkMode(INPUT_DARK_MODE, isApp)};
`;

export const ErrorText = styled.span`
  position: absolute;
  bottom: -4px;
  left: 0;
  font-family: 'Roboto';
  font-size: 14px;
  color: #cc0000;
`;

export const FieldDescription = styled.div<{ isApp?: boolean }>`
  font-family: 'Roboto';
  font-size: 14px;
  line-height: 1.4;
  color: #333333;
  margin-bottom: 6px;

  ${({ isApp }) =>
    applyDarkMode(
      `
        color: #999999 !important;
    `,
      isApp
    )};
`;

/* Budget slider */
export const SliderContainer = styled.div`
  padding: 8px 0;
`;

export const SliderTrack = styled.div`
  position: relative;
  width: 100%;
  height: 6px;
  background-color: #e4e4e4;
  border-radius: 3px;
  margin: 8px 0;
`;

export const SliderRange = styled.div<{ $left: number; $width: number }>`
  position: absolute;
  height: 100%;
  background-color: #005c8a;
  border-radius: 3px;
  left: ${({ $left }) => $left}%;
  width: ${({ $width }) => $width}%;
`;

export const SliderHandle = styled.input`
  -webkit-appearance: none;
  appearance: none;
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  left: 0;
  width: 100%;
  height: 6px;
  background: transparent;
  pointer-events: none;
  outline: none;
  margin: 0;
  padding: 0;

  &::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background-color: #005c8a;
    cursor: pointer;
    pointer-events: all;
    border: 2px solid #ffffff;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
  }

  &::-moz-range-thumb {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background-color: #005c8a;
    cursor: pointer;
    pointer-events: all;
    border: 2px solid #ffffff;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
  }
`;

export const SliderValues = styled.div`
  display: flex;
  justify-content: space-between;
  font-family: 'Roboto';
  font-size: 14px;
  color: #333333;
  margin-top: 16px;
`;

/* Section header inside steps */
export const SectionHeader = styled.h3<{ isApp?: boolean }>`
  font-family: 'Times Modern';
  font-weight: 700;
  font-size: 24px;
  line-height: 1.3;
  color: #1d1d1b;
  margin: 0 0 20px 0;

  ${getMediaQuery('xs', 'md')} {
    font-size: 20px;
    margin: 0 0 16px 0;
  }

  ${({ isApp }) =>
    applyDarkMode(
      `
        color: #ffffff !important;
        border-color: #444444 !important;
    `,
      isApp
    )};
`;

/* Navigation buttons */
export const ButtonRow = styled.div`
  display: flex;
  justify-content: flex-end;
  gap: 16px;
  margin-top: 32px;

  /* Push Back button to the left when present */
  & > :first-child:not(:last-child) {
    margin-right: auto;
  }

  ${getMediaQuery('xs', 'md')} {
    margin-top: 24px;
    gap: 12px;
  }
`;

export const NavButton = styled.button<{
  $variant: 'primary' | 'secondary';
  isApp?: boolean;
}>`
  padding: 12px 24px;
  font-family: 'Roboto';
  font-weight: 500;
  font-size: 16px;
  line-height: 1.5;
  cursor: pointer;
  transition: all 0.2s ease;
  min-width: 140px;
  text-align: center;

  ${getMediaQuery('xs', 'md')} {
    min-width: 0;
    flex: 1;
    padding: 12px 16px;
    font-size: 16px;
  }

  ${({ $variant }) =>
    $variant === 'primary'
      ? css`
          background-color: #005c8a;
          color: #ffffff;
          border: none;

          &:hover {
            background-color: #00527a;
          }

          &:disabled {
            opacity: 0.6;
            cursor: not-allowed;
          }
        `
      : css`
          background-color: transparent;
          color: #005c8a;
          border: 1px solid #005c8a;

          &:hover {
            background-color: #f5f5f5;
          }
        `};

  ${({ isApp, $variant }) =>
    $variant === 'primary' &&
    applyDarkMode(
      `
        background-color: #74bade !important;
        color: #1d1d1b !important;

        &:hover {
          background-color: #93cbe8 !important;
        }
    `,
      isApp
    )};

  ${({ isApp, $variant }) =>
    $variant === 'secondary' &&
    applyDarkMode(
      `
        border-color: #74bade !important;
        color: #74bade !important;

        &:hover {
          background-color: #2a2a2a !important;
        }
    `,
      isApp
    )};
`;

/* Success state */
export const SuccessContainer = styled.div`
  text-align: center;
  padding: 40px 20px;

  ${getMediaQuery('xs', 'md')} {
    padding: 32px 16px;
  }
`;

export const SuccessIcon = styled.div`
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background-color: #005c8a;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 24px auto;
`;

export const SuccessTitle = styled.h3<{ isApp?: boolean }>`
  font-family: 'Times Modern';
  font-weight: 700;
  font-size: 24px;
  color: #1d1d1b;
  margin: 0 0 12px 0;

  ${({ isApp }) =>
    applyDarkMode(
      `
        color: #ffffff !important;
    `,
      isApp
    )};
`;

export const SuccessMessage = styled.p<{ isApp?: boolean }>`
  font-family: 'Times Digital W04 Regular';
  font-size: 16px;
  line-height: 1.5;
  color: #333333;
  margin: 0;

  ${({ isApp }) =>
    applyDarkMode(
      `
        color: #cccccc !important;
    `,
      isApp
    )};
`;

/* Inline message (error banner) */
export const InlineMessageContainer = styled.div`
  display: flex;
  flex-direction: column;
  gap: 16px;
  background-color: #ffefef;
  border-left: 4px solid #b20908;
  padding: 16px;
  margin-bottom: 20px;
  color: #1a1a1a;
`;

export const InlineMessageHeader = styled.div`
  display: flex;
  align-items: center;
  gap: 10px;
`;

export const InlineMessageIconWrapper = styled.span`
  display: flex;
  flex-shrink: 0;
  align-items: center;
`;

export const InlineMessageHeadline = styled.span`
  font-family: 'Roboto';
  font-size: 16px;
  font-weight: 700;
`;

export const InlineMessageBody = styled(InlineMessageHeadline).attrs({
  as: 'p'
})`
  font-weight: 400;
  margin: 0;
  line-height: 1.5;
`;

export const InlineMessageLink = styled.a`
  font-family: 'Roboto';
  font-size: 14px;
  font-weight: 700;
  text-decoration: none;
  color: #1a1a1a;

  &:hover {
    text-decoration: underline;
  }
`;

export const PhoneNumberLink = styled(InlineMessageLink)`
  margin-left: 4px;
  font-size: 16px;
`;

/* Contact preferences */
export const CheckboxGroup = styled.div`
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
  margin-top: 4px;
`;

export const CheckboxLabel = styled.label<{ isApp?: boolean }>`
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: 'Roboto';
  font-weight: 400;
  font-size: 16px;
  line-height: 1.5;
  color: #333333;
  cursor: pointer;
  user-select: none;

  ${({ isApp }) =>
    applyDarkMode(
      `
        color: #cccccc !important;
    `,
      isApp
    )};
`;

export const CheckboxWrapper = styled.div`
  width: 32px;
  height: 32px;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  overflow: hidden;
  border: 1px solid #cccccc;
  border-radius: 0;
  background-color: #ffffff;
  cursor: pointer;

  &.checked {
    background-color: #005c8a;
    border-color: #005c8a;
  }
`;

export const CheckboxInput = styled.input`
  opacity: 0;
  position: absolute;
  cursor: pointer;
`;

export const NewsletterCheckboxLabel = styled(CheckboxLabel)`
  align-items: flex-start;
  gap: 12px;
`;

export const NewsletterCheckboxWrapper = styled(CheckboxWrapper)`
  margin-top: 2px;
`;

export const SubSectionLabel = styled.h4<{ isApp?: boolean }>`
  font-family: 'Roboto';
  font-weight: 600;
  font-size: 16px;
  color: #1d1d1b;
  margin: 0 0 8px 0;

  ${({ isApp }) =>
    applyDarkMode(
      `
        color: #ffffff !important;
    `,
      isApp
    )};
`;

export const AppointmentFields = styled.div`
  display: flex;
  gap: 16px;
  margin-top: 4px;

  ${getMediaQuery('xs', 'md')} {
    flex-direction: column;
    gap: 0;
  }
`;

export const TimeSelectRow = styled.div`
  display: flex;
  align-items: center;
  gap: 6px;
`;

export const TimeSeparator = styled.span<{ isApp?: boolean }>`
  font-family: 'Roboto';
  font-size: 16px;
  font-weight: 500;
  color: #333333;

  ${({ isApp }) =>
    applyDarkMode(
      `
        color: #cccccc !important;
    `,
      isApp
    )};
`;