@layer base, layout, components, utilities, pages;

/**
 * Contact Page - 2025 Design
 * Matches Privacy Policy design system
 */

@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;500;600;700&family=Zen+Kaku+Gothic+New:wght@400;500;700&display=swap');

@layer pages {

  /* ==========================================================================
     CSS Variables
     ========================================================================== */

  .contact {
    --ct-font-en: 'Outfit', var(--font-sans);
    --ct-font-jp: 'Zen Kaku Gothic New', var(--font-sans);

    --ct-dark: #0a0e17;
    --ct-navy: #0f172a;
    --ct-slate: #1e293b;
    --ct-muted: #64748b;
    --ct-light: #f1f5f9;
    --ct-white: #ffffff;
    --ct-accent: #3b82f6;
    --ct-accent-soft: rgba(59, 130, 246, 0.1);
    --ct-error: #ef4444;

    --ct-ease: cubic-bezier(0.22, 1, 0.36, 1);
  }

  /* ==========================================================================
     Hero Section
     ========================================================================== */

  .contact-hero {
    position: relative;
    padding: 80px 0;
    background: linear-gradient(135deg, var(--ct-dark) 0%, var(--ct-navy) 100%);
    overflow: hidden;
  }

  .contact-hero__bg {
    position: absolute;
    inset: 0;
    pointer-events: none;
  }

  .contact-hero__grid {
    position: absolute;
    inset: 0;
    background-image:
      linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
      linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
    background-size: 60px 60px;
  }

  .contact-hero__inner {
    position: relative;
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 48px;
  }

  .contact-hero__eyebrow {
    display: inline-block;
    font-family: var(--ct-font-en);
    font-size: 11px;
    font-weight: 500;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--ct-accent);
    margin-bottom: 16px;
    padding: 6px 14px;
    background: var(--ct-accent-soft);
    border-radius: 100px;
  }

  .contact-hero__title-en {
    font-family: var(--ct-font-en);
    font-size: clamp(48px, 7vw, 72px);
    font-weight: 700;
    line-height: 1;
    letter-spacing: -0.03em;
    color: var(--ct-white);
    margin: 0;
  }

  .contact-hero__title-jp {
    font-family: var(--ct-font-jp);
    font-size: 18px;
    font-weight: 500;
    letter-spacing: 0.1em;
    color: rgba(255, 255, 255, 0.5);
    margin: 12px 0 0;
  }

  .contact-hero__lead {
    font-family: var(--ct-font-jp);
    font-size: 15px;
    line-height: 1.9;
    color: rgba(255, 255, 255, 0.5);
    margin: 24px 0 0;
  }

  /* ==========================================================================
     Flow Progress
     ========================================================================== */

  .contact-flow {
    background: var(--ct-white);
    border-bottom: 1px solid rgba(15, 23, 42, 0.06);
  }

  .contact-flow__list {
    display: flex;
    justify-content: center;
    align-items: stretch;
    list-style: none;
    margin: 0;
    padding: 0;
    max-width: 600px;
    margin: 0 auto;
  }

  .contact-flow__item {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    padding: 24px 16px;
    position: relative;
  }

  .contact-flow__item::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: transparent;
  }

  .contact-flow__item--active::after {
    background: var(--ct-accent);
  }

  .contact-flow__num {
    font-family: var(--ct-font-en);
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.05em;
    color: var(--ct-muted);
    transition: color 0.3s var(--ct-ease);
  }

  .contact-flow__item--active .contact-flow__num {
    color: var(--ct-accent);
  }

  .contact-flow__label {
    font-family: var(--ct-font-jp);
    font-size: 14px;
    font-weight: 600;
    color: var(--ct-muted);
    transition: color 0.3s var(--ct-ease);
  }

  .contact-flow__item--active .contact-flow__label {
    color: var(--ct-navy);
  }

  /* ==========================================================================
     Main Content
     ========================================================================== */

  .contact-main {
    background: var(--ct-white);
    padding: 64px 0 100px;
  }

  .contact-main__inner {
    max-width: 800px;
    margin: 0 auto;
    padding: 0 48px;
  }

  /* ==========================================================================
     Form Sections
     ========================================================================== */

  .contact-form__section {
    margin-bottom: 56px;
  }

  .contact-form__section-title {
    display: flex;
    flex-direction: column;
    gap: 4px;
    margin: 0 0 24px;
    padding-bottom: 16px;
    border-bottom: 1px solid rgba(15, 23, 42, 0.08);
  }

  .contact-form__section-en {
    font-family: var(--ct-font-en);
    font-size: 11px;
    font-weight: 500;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--ct-accent);
  }

  .contact-form__section-jp {
    font-family: var(--ct-font-jp);
    font-size: 18px;
    font-weight: 700;
    color: var(--ct-navy);
  }

  /* ==========================================================================
     Form Fields
     ========================================================================== */

  .contact-form__fields {
    display: flex;
    flex-direction: column;
    gap: 24px;
  }

  .contact-form__field {
    display: flex;
    flex-direction: column;
    gap: 8px;
  }

  .contact-form__field--email {
    gap: 12px;
  }

  .contact-form__label {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-family: var(--ct-font-jp);
    font-size: 14px;
    font-weight: 600;
    color: var(--ct-navy);
  }

  .contact-form__required {
    font-size: 10px;
    font-weight: 600;
    color: var(--ct-white);
    background: var(--ct-error);
    padding: 2px 8px;
    border-radius: 4px;
  }

  .contact-form__input,
  .contact-form__textarea {
    width: 100%;
    font-family: var(--ct-font-jp);
    font-size: 15px;
    color: var(--ct-navy);
    background: var(--ct-light);
    border: 2px solid transparent;
    border-radius: 8px;
    transition: all 0.25s var(--ct-ease);
  }

  .contact-form__input {
    height: 52px;
    padding: 0 16px;
  }

  .contact-form__textarea {
    padding: 16px;
    resize: vertical;
    min-height: 160px;
  }

  .contact-form__input::placeholder,
  .contact-form__textarea::placeholder {
    color: var(--ct-muted);
  }

  .contact-form__input:focus,
  .contact-form__textarea:focus {
    outline: none;
    background: var(--ct-white);
    border-color: var(--ct-accent);
    box-shadow: 0 0 0 4px var(--ct-accent-soft);
  }

  /* ==========================================================================
     Radio Buttons
     ========================================================================== */

  .contact-form__radio-group {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
  }

  .contact-form__radio {
    display: flex;
    align-items: center;
    gap: 10px;
    cursor: pointer;
  }

  .contact-form__radio input {
    position: absolute;
    opacity: 0;
    pointer-events: none;
  }

  .contact-form__radio-box {
    width: 22px;
    height: 22px;
    border: 2px solid #d1d5db;
    border-radius: 50%;
    position: relative;
    transition: all 0.2s var(--ct-ease);
  }

  .contact-form__radio-box::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 10px;
    height: 10px;
    background: var(--ct-accent);
    border-radius: 50%;
    transform: translate(-50%, -50%) scale(0);
    transition: transform 0.2s var(--ct-ease);
  }

  .contact-form__radio input:checked + .contact-form__radio-box {
    border-color: var(--ct-accent);
  }

  .contact-form__radio input:checked + .contact-form__radio-box::after {
    transform: translate(-50%, -50%) scale(1);
  }

  .contact-form__radio-text {
    font-family: var(--ct-font-jp);
    font-size: 15px;
    color: var(--ct-slate);
  }

  /* ==========================================================================
     File Upload
     ========================================================================== */

  .contact-form__note {
    font-family: var(--ct-font-jp);
    font-size: 14px;
    line-height: 1.8;
    color: var(--ct-muted);
    margin: 0 0 20px;
  }

  .contact-form__note small {
    color: var(--ct-muted);
  }

  .contact-form__files {
    display: flex;
    flex-direction: column;
    gap: 12px;
  }

  .contact-form__file {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 12px 16px;
    background: var(--ct-light);
    border-radius: 8px;
  }

  .contact-form__file input[type="file"] {
    display: none;
  }

  .contact-form__file-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    font-family: var(--ct-font-jp);
    font-size: 13px;
    font-weight: 600;
    color: var(--ct-white);
    background: var(--ct-navy);
    border-radius: 6px;
    cursor: pointer;
    transition: background 0.2s var(--ct-ease);
  }

  .contact-form__file-btn:hover {
    background: var(--ct-accent);
  }

  .contact-form__file-btn svg {
    width: 16px;
    height: 16px;
  }

  .contact-form__file-name {
    font-family: var(--ct-font-jp);
    font-size: 13px;
    color: var(--ct-muted);
  }

  /* ==========================================================================
     Checkbox
     ========================================================================== */

  .contact-form__privacy {
    display: flex;
    justify-content: center;
    padding: 32px 0;
    border-top: 1px solid rgba(15, 23, 42, 0.06);
    border-bottom: 1px solid rgba(15, 23, 42, 0.06);
  }

  .contact-form__checkbox {
    display: flex;
    align-items: center;
    gap: 12px;
    cursor: pointer;
  }

  .contact-form__checkbox input {
    position: absolute;
    opacity: 0;
    pointer-events: none;
  }

  .contact-form__checkbox-box {
    width: 24px;
    height: 24px;
    border: 2px solid #d1d5db;
    border-radius: 6px;
    position: relative;
    transition: all 0.2s var(--ct-ease);
  }

  .contact-form__checkbox-box::after {
    content: '';
    position: absolute;
    top: 4px;
    left: 8px;
    width: 6px;
    height: 10px;
    border: 2px solid var(--ct-white);
    border-top: none;
    border-left: none;
    transform: rotate(45deg) scale(0);
    transition: transform 0.2s var(--ct-ease);
  }

  .contact-form__checkbox input:checked + .contact-form__checkbox-box {
    background: var(--ct-accent);
    border-color: var(--ct-accent);
  }

  .contact-form__checkbox input:checked + .contact-form__checkbox-box::after {
    transform: rotate(45deg) scale(1);
  }

  .contact-form__checkbox-text {
    font-family: var(--ct-font-jp);
    font-size: 14px;
    color: var(--ct-slate);
  }

  .contact-form__checkbox-text a {
    color: var(--ct-accent);
    text-decoration: underline;
  }

  /* ==========================================================================
     Submit Button
     ========================================================================== */

  .contact-form__submit {
    display: flex;
    justify-content: center;
    margin-top: 40px;
  }

  .contact-form__btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    min-width: 280px;
    padding: 18px 40px;
    font-family: var(--ct-font-jp);
    font-size: 16px;
    font-weight: 600;
    color: var(--ct-white);
    background: var(--ct-navy);
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.25s var(--ct-ease);
  }

  .contact-form__btn:hover {
    background: var(--ct-accent);
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(59, 130, 246, 0.25);
  }

  .contact-form__btn svg {
    transition: transform 0.25s var(--ct-ease);
  }

  .contact-form__btn:hover svg {
    transform: translateX(4px);
  }

  /* ==========================================================================
     Validation Error
     ========================================================================== */

  .contact-form__input.borderRed,
  .contact-form__textarea.borderRed {
    border-color: var(--ct-error) !important;
    background: #fef2f2;
  }

  .errorMessage {
    display: none;
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 16px 24px;
    font-family: var(--ct-font-jp);
    font-size: 14px;
    text-align: center;
    color: var(--ct-error);
    background: #fef2f2;
    border-top: 1px solid #fecaca;
    z-index: 100;
  }

  /* ==========================================================================
     Loader
     ========================================================================== */

  .loaderItem {
    position: fixed;
    inset: 0;
    z-index: 9999;
  }

  .loaderBox {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(4px);
  }

  .loader {
    width: 48px;
    height: 48px;
    border: 3px solid var(--ct-light);
    border-top-color: var(--ct-accent);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
  }

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

  /* ==========================================================================
     Utilities
     ========================================================================== */

  .pc-only {
    display: inline;
  }

  /* ==========================================================================
     Responsive
     ========================================================================== */

  @media (max-width: 768px) {
    .contact-hero {
      padding: 48px 0;
    }

    .contact-hero__inner {
      padding: 0 24px;
    }

    .contact-hero__title-en {
      font-size: 40px;
    }

    .contact-hero__lead {
      font-size: 14px;
    }

    .pc-only {
      display: none;
    }

    .contact-flow__item {
      padding: 16px 8px;
    }

    .contact-flow__label {
      font-size: 12px;
    }

    .contact-main {
      padding: 40px 0 64px;
    }

    .contact-main__inner {
      padding: 0 20px;
    }

    .contact-form__section {
      margin-bottom: 40px;
    }

    .contact-form__radio-group {
      flex-direction: column;
      gap: 12px;
    }

    .contact-form__file {
      flex-direction: column;
      align-items: stretch;
      gap: 12px;
    }

    .contact-form__file-btn {
      justify-content: center;
      padding: 12px;
    }

    .contact-form__btn {
      width: 100%;
      min-width: 0;
    }
  }
}