/* heval_web/css/components.css */

/* ========== 导航栏 ========== */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: var(--bg-white);
  z-index: 1000;
  transition: box-shadow 0.3s ease;
}

.nav.scrolled {
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.nav-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-sm) var(--spacing-md);
  max-width: var(--max-width);
  margin: 0 auto;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 20px;
  font-weight: 700;
  color: var(--primary-color);
}

.nav-logo img {
  height: 40px;
  width: auto;
}

.nav-menu {
  display: flex;
  gap: var(--spacing-md);
  align-items: center;
}

.nav-link {
  color: var(--text-dark);
  font-weight: 500;
  transition: color 0.3s ease;
}

.nav-link:hover {
  color: var(--primary-color);
}

/* 移动端菜单 */
.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 4px;
  padding: 8px;
}

.menu-toggle span {
  display: block;
  width: 24px;
  height: 3px;
  background: var(--text-dark);
  border-radius: 2px;
  transition: all 0.3s ease;
}

@media (max-width: 767px) {
  .menu-toggle {
    display: flex;
  }

  .nav-menu {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--bg-white);
    flex-direction: column;
    padding: var(--spacing-md);
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
    transform: translateY(-100%);
    opacity: 0;
    pointer-events: none;
    transition: all 0.3s ease;
  }

  .nav-menu.active {
    transform: translateY(0);
    opacity: 1;
    pointer-events: all;
  }
}

/* ========== 按钮 ========== */
.btn {
  display: inline-block;
  padding: 12px 32px;
  border-radius: var(--border-radius);
  font-size: 16px;
  font-weight: 600;
  text-align: center;
  cursor: pointer;
  transition: all 0.3s ease;
  border: 2px solid transparent;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  color: white;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 24px rgba(91, 127, 255, 0.4);
}

.btn-secondary {
  background: var(--bg-white);
  color: var(--primary-color);
  border-color: var(--primary-color);
}

.btn-secondary:hover {
  background: var(--primary-color);
  color: white;
}

/* ========== 卡片 ========== */
.card {
  background: var(--bg-white);
  border-radius: var(--border-radius);
  box-shadow: var(--card-shadow);
  padding: var(--spacing-md);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.15);
}

.card-image {
  width: 100%;
  height: 200px;
  object-fit: cover;
  border-radius: calc(var(--border-radius) - 4px);
  margin-bottom: var(--spacing-sm);
}

.card-title {
  font-size: 20px;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--text-dark);
}

.card-description {
  font-size: 14px;
  color: var(--text-muted);
  margin-bottom: var(--spacing-sm);
}

/* ========== Footer ========== */
.footer {
  background: var(--text-dark);
  color: var(--bg-white);
  padding: var(--spacing-lg) 0 var(--spacing-md);
}

.footer-content {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-md);
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: var(--spacing-lg);
}

.footer-logo {
  font-size: 24px;
  font-weight: 700;
  margin-bottom: var(--spacing-sm);
}

.footer-description {
  color: rgba(255, 255, 255, 0.7);
  margin-bottom: var(--spacing-md);
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer-link {
  color: rgba(255, 255, 255, 0.7);
  transition: color 0.3s ease;
}

.footer-link:hover {
  color: var(--bg-white);
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  margin-top: var(--spacing-md);
  padding-top: var(--spacing-sm);
  text-align: center;
  color: rgba(255, 255, 255, 0.5);
  font-size: 14px;
}

@media (max-width: 767px) {
  .footer-content {
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
  }
}

/* ========== 图片轮播 ========== */
.carousel {
  position: relative;
  width: 100%;
  overflow: hidden;
  border-radius: var(--border-radius);
}

.carousel-images {
  display: flex;
  transition: transform 0.3s ease;
}

.carousel-image {
  min-width: 100%;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.carousel-image.active {
  opacity: 1;
}

.carousel-button {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  background: rgba(255, 255, 255, 0.9);
  border-radius: 50%;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: background 0.3s ease;
  z-index: 10;
}

.carousel-button:hover {
  background: var(--bg-white);
}

.carousel-button.prev {
  left: var(--spacing-sm);
}

.carousel-button.next {
  right: var(--spacing-sm);
}

.carousel-button svg {
  width: 20px;
  height: 20px;
  fill: var(--text-dark);
}