/* ========================================
   女王AI获客工作室 - 可复用组件样式
   导航 / 页脚 / 卡片 / 悬浮按钮 / 步骤条 / 表单
   ======================================== */

/* === 导航栏 === */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-sticky);
  padding: var(--sp-sm) 0;
  transition: all var(--transition-normal);
  background: transparent;
}

.nav--scrolled {
  background: var(--color-white);
  box-shadow: var(--shadow-md);
  padding: 0.5rem 0;
}

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav__logo {
  display: flex;
  align-items: center;
  gap: var(--sp-xs);
  text-decoration: none;
  color: var(--color-white);
}

.nav--scrolled .nav__logo {
  color: var(--color-primary-dark);
}

.nav__logo-icon {
  width: 36px;
  height: 36px;
}

.nav__brand {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 700;
}

.nav__links {
  display: flex;
  align-items: center;
  gap: var(--sp-md);
}

.nav__link {
  font-size: var(--fs-small);
  font-weight: 500;
  color: rgba(255, 255, 255, 0.85);
  text-decoration: none;
  transition: color var(--transition-fast);
  padding: 0.25rem 0;
  position: relative;
}

.nav__link:hover,
.nav__link--active {
  color: var(--color-white);
}

.nav__link--active::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--color-accent);
  border-radius: 1px;
}

.nav--scrolled .nav__link {
  color: var(--color-dark-gray);
}

.nav--scrolled .nav__link:hover,
.nav--scrolled .nav__link--active {
  color: var(--color-primary);
}

.nav__link--cta {
  background: var(--color-accent);
  color: var(--color-white) !important;
  padding: 0.5rem 1.25rem;
  border-radius: var(--radius-md);
  font-weight: 600;
}

.nav__link--cta:hover {
  background: var(--color-accent-dark);
}

.nav__menu-btn {
  display: none;
  width: 40px;
  height: 40px;
  align-items: center;
  justify-content: center;
  color: var(--color-white);
  border-radius: var(--radius-md);
}

.nav--scrolled .nav__menu-btn {
  color: var(--color-primary);
}

.nav__menu-icon {
  width: 24px;
  height: 24px;
}

/* === 移动端侧滑面板 === */
.nav__overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(26, 17, 24, 0.5);
  z-index: var(--z-overlay);
  opacity: 0;
  transition: opacity var(--transition-normal);
}

.nav__overlay--active {
  display: block;
  opacity: 1;
}

.nav__mobile-panel {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  width: 280px;
  background: var(--color-white);
  z-index: var(--z-modal);
  transform: translateX(100%);
  transition: transform var(--transition-normal);
  padding: var(--sp-lg);
  box-shadow: var(--shadow-lg);
}

.nav__mobile-panel--active {
  transform: translateX(0);
}

.nav__close-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  color: var(--color-dark-gray);
  margin-bottom: var(--sp-lg);
}

.nav__mobile-links {
  display: flex;
  flex-direction: column;
  gap: var(--sp-md);
}

.nav__mobile-link {
  font-size: 1rem;
  font-weight: 500;
  color: var(--color-dark-gray);
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--color-light-gray);
}

.nav__mobile-link:hover,
.nav__mobile-link--active {
  color: var(--color-primary);
}

.nav__mobile-link--cta {
  background: var(--gradient-hero);
  color: var(--color-white);
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius-md);
  border-bottom: none;
  text-align: center;
  margin-top: var(--sp-sm);
}

/* === 页脚 === */
.footer {
  background: var(--color-black);
  color: var(--color-mid-gray);
  padding: var(--sp-xl) 0 var(--sp-md);
}

.footer__grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: var(--sp-lg);
  padding-bottom: var(--sp-lg);
  border-bottom: 1px solid rgba(155, 143, 166, 0.2);
}

.footer__brand {
  display: flex;
  flex-direction: column;
  gap: var(--sp-sm);
}

.footer__logo {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--color-white);
}

.footer__desc {
  font-size: var(--fs-small);
  line-height: 1.6;
}

.footer__nav h3,
.footer__services h3,
.footer__contact h3 {
  font-family: var(--font-primary);
  font-size: var(--fs-small);
  font-weight: 600;
  color: var(--color-white);
  margin-bottom: var(--sp-md);
}

.footer__nav ul,
.footer__services ul {
  display: flex;
  flex-direction: column;
  gap: var(--sp-xs);
}

.footer__nav a,
.footer__services a {
  font-size: var(--fs-small);
  color: var(--color-mid-gray);
  transition: color var(--transition-fast);
}

.footer__nav a:hover,
.footer__services a:hover {
  color: var(--color-accent-light);
}

.footer__contact p {
  font-size: var(--fs-small);
  margin-bottom: var(--sp-xs);
}

.footer__cta-btn {
  display: inline-block;
  background: var(--color-accent);
  color: var(--color-white);
  padding: 0.5rem 1.25rem;
  border-radius: var(--radius-md);
  font-size: var(--fs-small);
  font-weight: 600;
  text-decoration: none;
  transition: background var(--transition-fast);
  margin-top: var(--sp-sm);
}

.footer__cta-btn:hover {
  background: var(--color-accent-dark);
}

.footer__bottom {
  padding-top: var(--sp-md);
  text-align: center;
  font-size: var(--fs-caption);
}

/* === 服务卡片 === */
.service-card {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  padding: var(--sp-lg);
  box-shadow: var(--shadow-card);
  transition: all var(--transition-normal);
  display: flex;
  flex-direction: column;
  gap: var(--sp-md);
}

.service-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-card-hover);
}

.service-card__icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--gradient-card);
  border-radius: var(--radius-md);
  color: var(--color-primary);
}

.service-card__icon svg {
  width: 28px;
  height: 28px;
}

.service-card__title {
  font-family: var(--font-display);
  font-size: var(--fs-h3);
  color: var(--color-black);
}

.service-card__desc {
  font-size: var(--fs-body);
  color: var(--color-dark-gray);
  line-height: var(--lh-body);
}

.service-card__features {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.service-card__features li {
  display: flex;
  align-items: center;
  gap: var(--sp-xs);
  font-size: var(--fs-small);
  color: var(--color-dark-gray);
}

.service-card__features li svg {
  width: 16px;
  height: 16px;
  color: var(--color-accent);
}

.service-card__link {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-xs);
  font-size: var(--fs-small);
  font-weight: 600;
  color: var(--color-primary);
  margin-top: auto;
}

.service-card__link:hover {
  color: var(--color-accent);
}

.service-card__link svg {
  width: 16px;
  height: 16px;
  transition: transform var(--transition-fast);
}

.service-card__link:hover svg {
  transform: translateX(4px);
}

/* === 数据亮点卡片 === */
.stat-card {
  text-align: center;
  padding: var(--sp-lg);
  background: var(--color-white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
}

.stat-card__number {
  display: block;
  font-family: var(--font-display);
  font-size: clamp(2rem, 3vw, 2.5rem);
  font-weight: 700;
  color: var(--color-primary);
  line-height: 1;
  margin-bottom: var(--sp-xs);
}

.stat-card__label {
  display: block;
  font-size: var(--fs-small);
  color: var(--color-mid-gray);
}

/* === 博客卡片 === */
.blog-card {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  overflow: hidden;
  transition: all var(--transition-normal);
}

.blog-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-card-hover);
}

.blog-card__image {
  width: 100%;
  height: 180px;
  background: var(--gradient-card);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.blog-card__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.blog-card__tag {
  display: inline-block;
  background: var(--color-primary-10);
  color: var(--color-primary);
  font-size: var(--fs-caption);
  font-weight: 600;
  padding: 0.25rem 0.75rem;
  border-radius: var(--radius-sm);
  margin: var(--sp-md) var(--sp-md) 0;
}

.blog-card__content {
  padding: 0 var(--sp-md) var(--sp-md);
}

.blog-card__title {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--color-black);
  margin-bottom: var(--sp-xs);
}

.blog-card__excerpt {
  font-size: var(--fs-small);
  color: var(--color-dark-gray);
  line-height: 1.6;
  margin-bottom: var(--sp-sm);
}

.blog-card__date {
  font-size: var(--fs-caption);
  color: var(--color-mid-gray);
}

.blog-card__link {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-xs);
  font-size: var(--fs-small);
  font-weight: 600;
  color: var(--color-primary);
  float: right;
}

.blog-card__link:hover {
  color: var(--color-accent);
}

.blog-card--hidden {
  display: none;
}

/* === CTA区块 === */
.cta-section {
  background: var(--gradient-hero);
  padding: var(--sp-xl) 0;
  text-align: center;
}

.cta-section__title {
  font-family: var(--font-display);
  font-size: var(--fs-h2);
  color: var(--color-white);
  margin-bottom: var(--sp-sm);
}

.cta-section__desc {
  font-size: var(--fs-body);
  color: rgba(255, 255, 255, 0.85);
  margin-bottom: var(--sp-lg);
}

.cta-section__actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--sp-md);
}

/* === 悬浮咨询按钮 === */
.float-cta {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  z-index: var(--z-fixed);
  opacity: 0;
  transform: translateY(20px);
  transition: all var(--transition-normal);
}

.float-cta--visible {
  opacity: 1;
  transform: translateY(0);
}

.float-cta__trigger {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  background: var(--gradient-hero);
  border-radius: 50%;
  box-shadow: var(--shadow-md);
  cursor: pointer;
  transition: all var(--transition-normal);
}

.float-cta__trigger:hover {
  transform: scale(1.1);
  box-shadow: var(--shadow-lg);
}

.float-cta__icon {
  width: 28px;
  height: 28px;
  color: var(--color-white);
}

.float-cta__panel {
  position: absolute;
  bottom: 70px;
  right: 0;
  width: 240px;
  background: var(--color-white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  opacity: 0;
  transform: translateY(10px) scale(0.95);
  transition: all var(--transition-normal);
  pointer-events: none;
}

.float-cta__panel--active {
  opacity: 1;
  transform: translateY(0) scale(1);
  pointer-events: auto;
}

.float-cta__panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--sp-sm) var(--sp-md);
  background: var(--gradient-hero);
  color: var(--color-white);
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
  font-weight: 600;
  font-size: var(--fs-small);
}

.float-cta__panel-close {
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-white);
  font-size: 1.2rem;
  cursor: pointer;
}

.float-cta__panel-body {
  padding: var(--sp-md);
  display: flex;
  flex-direction: column;
  gap: var(--sp-sm);
}

.float-cta__item {
  display: flex;
  align-items: center;
  gap: var(--sp-sm);
  font-size: var(--fs-small);
  color: var(--color-dark-gray);
}

.float-cta__item svg {
  width: 20px;
  height: 20px;
  color: var(--color-primary);
}

.float-cta__qrcode {
  width: 120px;
  height: 120px;
  background: var(--color-light-gray);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--fs-caption);
  color: var(--color-mid-gray);
  margin: var(--sp-xs) auto;
}

.float-cta__form-link {
  display: block;
  text-align: center;
  background: var(--color-accent);
  color: var(--color-white);
  padding: 0.5rem;
  border-radius: var(--radius-md);
  font-size: var(--fs-small);
  font-weight: 600;
  text-decoration: none;
  transition: background var(--transition-fast);
}

.float-cta__form-link:hover {
  background: var(--color-accent-dark);
}

/* === 执行流程步骤条 === */
.process-steps {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  position: relative;
  gap: var(--sp-sm);
}

.process-step {
  flex: 1;
  text-align: center;
  position: relative;
}

.process-step__number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  background: var(--gradient-hero);
  color: var(--color-white);
  border-radius: 50%;
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: var(--sp-sm);
}

.process-step__title {
  font-family: var(--font-primary);
  font-size: var(--fs-small);
  font-weight: 600;
  color: var(--color-black);
  margin-bottom: var(--sp-xs);
}

.process-step__desc {
  font-size: var(--fs-caption);
  color: var(--color-mid-gray);
}

/* 连接线 */
.process-steps::before {
  content: '';
  position: absolute;
  top: 24px;
  left: calc(48px / 2);
  right: calc(48px / 2);
  height: 2px;
  background: var(--gradient-hero);
  z-index: -1;
}

/* === 联系方式卡片 === */
.contact-card {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  padding: var(--sp-lg);
  box-shadow: var(--shadow-card);
  display: flex;
  flex-direction: column;
  gap: var(--sp-md);
}

.contact-card__item {
  display: flex;
  align-items: center;
  gap: var(--sp-md);
}

.contact-card__icon {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--gradient-card);
  border-radius: var(--radius-md);
  color: var(--color-primary);
}

.contact-card__icon svg {
  width: 24px;
  height: 24px;
}

.contact-card__label {
  font-size: var(--fs-caption);
  color: var(--color-mid-gray);
}

.contact-card__value {
  font-size: var(--fs-body);
  font-weight: 600;
  color: var(--color-black);
}

/* === 表单 === */
.form-group {
  margin-bottom: var(--sp-md);
}

.form-group label {
  display: block;
  font-size: var(--fs-small);
  font-weight: 600;
  color: var(--color-dark-gray);
  margin-bottom: var(--sp-xs);
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 2px solid var(--color-light-gray);
  border-radius: var(--radius-md);
  font-size: var(--fs-body);
  background: var(--color-white);
  transition: border-color var(--transition-fast);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--color-primary);
  outline: none;
}

.form-group textarea {
  min-height: 100px;
  resize: vertical;
}

.form-group--error input,
.form-group--error select,
.form-group--error textarea {
  border-color: var(--color-error);
}

.form-error {
  font-size: var(--fs-caption);
  color: var(--color-error);
  margin-top: var(--sp-xs);
}

.form-success {
  background: var(--color-success);
  color: var(--color-white);
  padding: var(--sp-md);
  border-radius: var(--radius-md);
  text-align: center;
  font-weight: 500;
  display: none;
}

.form-success--active {
  display: block;
}

/* === 分类筛选标签 === */
.filter-tags {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--sp-sm);
  margin-bottom: var(--sp-lg);
}

.filter-tag {
  padding: 0.5rem 1.25rem;
  font-size: var(--fs-small);
  font-weight: 500;
  color: var(--color-dark-gray);
  background: var(--color-white);
  border: 2px solid var(--color-light-gray);
  border-radius: var(--radius-pill);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.filter-tag:hover {
  border-color: var(--color-primary-light);
  color: var(--color-primary);
}

.filter-tag--active {
  background: var(--gradient-hero);
  color: var(--color-white);
  border-color: transparent;
}

/* === 案例数据卡片组 === */
.case-stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--sp-md);
}

.case-stat {
  background: var(--gradient-card);
  border-radius: var(--radius-lg);
  padding: var(--sp-md);
  text-align: center;
}

.case-stat__value {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 2vw, 1.8rem);
  font-weight: 700;
  color: var(--color-primary);
}

.case-stat__label {
  font-size: var(--fs-small);
  color: var(--color-mid-gray);
  margin-top: var(--sp-xs);
}

/* === 案例卡片（预告占位） === */
.case-preview-card {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  padding: var(--sp-lg);
  box-shadow: var(--shadow-card);
  text-align: center;
  border: 2px dashed var(--color-light-gray);
}

.case-preview-card__tag {
  display: inline-block;
  background: var(--color-primary-10);
  color: var(--color-primary);
  font-size: var(--fs-caption);
  font-weight: 600;
  padding: 0.25rem 0.75rem;
  border-radius: var(--radius-sm);
  margin-bottom: var(--sp-md);
}

.case-preview-card__title {
  font-family: var(--font-display);
  font-size: var(--fs-h3);
  color: var(--color-black);
  margin-bottom: var(--sp-sm);
}

.case-preview-card__desc {
  font-size: var(--fs-small);
  color: var(--color-mid-gray);
}

/* === 诊断预约区块 === */
.diagnosis-section {
  background: var(--gradient-section);
  padding: var(--sp-xl) 0;
  text-align: center;
}

.diagnosis-section__title {
  font-family: var(--font-display);
  font-size: var(--fs-h2);
  color: var(--color-black);
  margin-bottom: var(--sp-md);
}

.diagnosis-section__items {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--sp-md);
  max-width: var(--container-narrow);
  margin: 0 auto var(--sp-lg);
}

.diagnosis-item {
  display: flex;
  align-items: center;
  gap: var(--sp-sm);
  font-size: var(--fs-body);
  color: var(--color-dark-gray);
}

.diagnosis-item svg {
  width: 20px;
  height: 20px;
  color: var(--color-accent);
}