/* ============================================
   page-contact – 联系入口页面专属样式
   作用域：.page-contact
   移动端优先 + 桌面增强
   ============================================ */

/* ---- 布局与背景 ---- */
.page-contact {
  position: relative;
  display: block;
  background: var(--color-gray);
  color: var(--color-white);
  font-family: var(--font-body);
  overflow: hidden;
}

.page-contact__bg-wrap {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
}

.page-contact__bg-img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 30%;
  filter: brightness(0.3) saturate(0.7);
}

.page-contact__bg-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(90,90,90,0.85) 0%, rgba(26,26,26,0.92) 100%);
}

.page-contact__inner {
  position: relative;
  z-index: 1;
  padding: var(--space-lg) var(--space-md) var(--space-2xl);
  max-width: var(--max-width);
  margin: 0 auto;
}

/* ---- 面包屑 ---- */
.page-contact .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-xs);
  margin-bottom: var(--space-lg);
  font-size: var(--size-small);
  color: rgba(255,255,255,0.65);
}

.page-contact .breadcrumb__item a {
  color: var(--color-green);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s;
}

.page-contact .breadcrumb__item a:hover,
.page-contact .breadcrumb__item a:focus-visible {
  border-bottom-color: var(--color-green);
}

.page-contact .breadcrumb__item--current {
  color: var(--color-white);
  font-weight: 600;
}

.page-contact .breadcrumb__sep {
  color: rgba(255,255,255,0.4);
}

/* ---- 标题区 ---- */
.page-contact__header {
  margin-bottom: var(--space-xl);
  text-align: center;
}

.page-contact__title {
  font-family: var(--font-headline);
  font-size: var(--size-h1);
  font-weight: var(--weight-h1);
  color: var(--color-white);
  letter-spacing: 0.02em;
  line-height: 1.1;
  margin: 0 0 var(--space-sm);
  text-shadow: 0 2px 12px rgba(0,0,0,0.3);
}

.page-contact__subtitle {
  font-size: 1.1rem;
  max-width: 600px;
  margin: 0 auto;
  color: rgba(255,255,255,0.8);
  line-height: 1.6;
  font-family: var(--font-body);
}

/* ---- 双栏容器 ---- */
.page-contact__columns {
  display: flex;
  flex-direction: column;
  gap: var(--space-xl);
}

/* ---- 左侧：联系信息 ---- */
.page-contact__info {
  flex: 1 1 100%;
}

.page-contact__info-title {
  font-family: var(--font-headline);
  font-size: var(--size-h2);
  font-weight: var(--weight-h2);
  color: var(--color-white);
  margin: 0 0 var(--space-sm);
  letter-spacing: 0.01em;
}

.page-contact__info-note {
  color: rgba(255,255,255,0.7);
  margin: 0 0 var(--space-lg);
  font-size: var(--size-body);
  line-height: 1.6;
  max-width: 520px;
}

.page-contact__card-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.page-contact__card {
  background: rgba(255,255,255,0.07);
  backdrop-filter: blur(4px);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: var(--radius);
  padding: var(--space-lg);
  transition: background 0.3s, border-color 0.3s, transform 0.2s;
  box-shadow: 0 4px 20px rgba(0,0,0,0.15);
}

.page-contact__card:hover {
  background: rgba(255,255,255,0.13);
  border-color: var(--color-red);
  transform: translateY(-2px);
}

.page-contact__card-icon-wrap {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  margin-bottom: var(--space-md);
  background: rgba(230,57,70,0.15);
  border-radius: 50%;
}

.page-contact__card-icon {
  width: 32px;
  height: 32px;
  object-fit: contain;
  filter: brightness(0) invert(1);
  opacity: 0.9;
}

.page-contact__card-label {
  font-family: var(--font-headline);
  font-size: var(--size-h3);
  font-weight: var(--weight-h2);
  color: var(--color-red);
  margin: 0 0 var(--space-xs);
  letter-spacing: 0.01em;
}

.page-contact__card-value {
  display: inline-block;
  font-size: 1.1rem;
  color: var(--color-white);
  text-decoration: none;
  font-weight: 600;
  margin-bottom: var(--space-sm);
  word-break: break-all;
}

.page-contact__card-value a {
  color: var(--color-green);
  text-decoration: underline;
  text-underline-offset: 3px;
  transition: color 0.2s;
}

.page-contact__card-value a:hover {
  color: var(--color-white);
}

.page-contact__card-desc {
  font-size: var(--size-small);
  color: rgba(255,255,255,0.65);
  line-height: 1.6;
  margin: 0;
}

/* ---- 右侧：反馈表单 ---- */
.page-contact__form-wrap {
  flex: 1 1 100%;
  background: rgba(255,255,255,0.06);
  backdrop-filter: blur(4px);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--radius);
  padding: var(--space-lg);
  box-shadow: 0 4px 24px rgba(0,0,0,0.12);
}

.page-contact__form-title {
  font-family: var(--font-headline);
  font-size: var(--size-h2);
  font-weight: var(--weight-h2);
  color: var(--color-white);
  margin: 0 0 var(--space-xs);
}

.page-contact__form-desc {
  color: rgba(255,255,255,0.7);
  margin: 0 0 var(--space-lg);
  font-size: var(--size-body);
  line-height: 1.6;
}

.page-contact__form {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.page-contact__field {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.page-contact__label {
  font-size: var(--size-body);
  font-weight: 600;
  color: rgba(255,255,255,0.9);
  font-family: var(--font-body);
}

.page-contact__required {
  color: var(--color-red);
  margin-left: 2px;
}

.page-contact__input {
  width: 100%;
  padding: 0.75rem 1rem;
  font-size: var(--size-body);
  font-family: var(--font-body);
  color: var(--color-dark);
  background: var(--color-light);
  border: 2px solid rgba(255,255,255,0.2);
  border-radius: var(--radius);
  transition: border-color 0.25s, box-shadow 0.25s;
  box-sizing: border-box;
}

.page-contact__input:focus {
  outline: none;
  border-color: var(--color-red);
  box-shadow: 0 0 0 3px rgba(230,57,70,0.25);
}

.page-contact__input::placeholder {
  color: rgba(90,90,90,0.5);
}

.page-contact__textarea {
  resize: vertical;
  min-height: 100px;
}

.page-contact__field-msg {
  font-size: var(--size-small);
  color: var(--color-red);
  min-height: 1.2em;
}

.page-contact__form-actions {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  margin-top: var(--space-sm);
}

.page-contact__submit {
  align-self: flex-start;
  padding: 0.75rem 2.5rem;
  font-size: 1.05rem;
  font-weight: 700;
  font-family: var(--font-headline);
  letter-spacing: 0.04em;
  background: var(--color-red);
  color: var(--color-white);
  border: none;
  border-radius: var(--radius);
  cursor: pointer;
  transition: background 0.25s, transform 0.15s;
  box-shadow: 0 2px 12px rgba(230,57,70,0.3);
}

.page-contact__submit:hover,
.page-contact__submit:focus-visible {
  background: #c52f3a;
  transform: translateY(-1px);
  box-shadow: 0 4px 20px rgba(230,57,70,0.4);
}

.page-contact__submit:active {
  transform: translateY(0);
}

.page-contact__form-hint {
  font-size: var(--size-small);
  color: rgba(255,255,255,0.5);
  line-height: 1.5;
  max-width: 380px;
}

/* ---- 底部内部链接 ---- */
.page-contact__links {
  margin-top: var(--space-2xl);
  padding-top: var(--space-lg);
  border-top: 1px solid rgba(255,255,255,0.1);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-md);
}

.page-contact__links-label {
  font-size: var(--size-body);
  color: rgba(255,255,255,0.6);
  margin: 0;
  font-family: var(--font-body);
}

.page-contact__link-btn {
  font-size: var(--size-small);
  font-weight: 600;
  font-family: var(--font-headline);
  letter-spacing: 0.02em;
  padding: 0.5rem 1.5rem;
  background: transparent;
  border: 1px solid rgba(255,255,255,0.3);
  color: var(--color-white);
  border-radius: var(--radius);
  text-decoration: none;
  transition: background 0.25s, border-color 0.25s;
}

.page-contact__link-btn:hover,
.page-contact__link-btn:focus-visible {
  background: rgba(255,255,255,0.1);
  border-color: var(--color-green);
  color: var(--color-green);
}

/* ============================================
   桌面端 ≥ 768px  双栏并排 + 留白增强
   ============================================ */
@media (min-width: 768px) {
  .page-contact__inner {
    padding: var(--space-xl) var(--space-lg) var(--space-2xl);
  }

  .page-contact__title {
    font-size: 3.2rem;
  }

  .page-contact__columns {
    flex-direction: row;
    align-items: flex-start;
    gap: var(--space-2xl);
  }

  .page-contact__info {
    flex: 0 0 45%;
    max-width: 520px;
  }

  .page-contact__form-wrap {
    flex: 1 1 55%;
    padding: var(--space-xl);
  }

  .page-contact__card {
    padding: var(--space-xl);
  }

  .page-contact__card-icon-wrap {
    width: 64px;
    height: 64px;
  }

  .page-contact__card-icon {
    width: 36px;
    height: 36px;
  }

  .page-contact__form-actions {
    flex-direction: row;
    align-items: center;
    gap: var(--space-lg);
  }

  .page-contact__submit {
    padding: 0.85rem 3rem;
    font-size: 1.1rem;
  }

  .page-contact__form-hint {
    max-width: none;
  }

  .page-contact__links {
    margin-top: var(--space-2xl);
    padding-top: var(--space-xl);
  }
}

/* ============================================
   大桌面 ≥ 1024px  更大标题 + 舒适间距
   ============================================ */
@media (min-width: 1024px) {
  .page-contact__title {
    font-size: var(--size-h1);
  }

  .page-contact__info-title {
    font-size: 2.8rem;
  }

  .page-contact__form-title {
    font-size: 2.8rem;
  }

  .page-contact__card-group {
    gap: var(--space-lg);
  }

  .page-contact__card {
    padding: var(--space-xl) var(--space-2xl);
  }

  .page-contact__form-wrap {
    padding: var(--space-2xl);
  }
}

/* ============================================
   减少动画偏好  仅保留基本显现
   ============================================ */
@media (prefers-reduced-motion: reduce) {
  .page-contact__card,
  .page-contact__form-wrap,
  .page-contact__submit,
  .page-contact__link-btn,
  .page-contact .breadcrumb__item a {
    transition: none;
  }

  .page-contact[data-reveal] {
    opacity: 1 !important;
    transform: none !important;
  }
}