/* ============================================
   Comic7 头部导航样式 - 深色主题
   ============================================ */

/* ========== 主头部 ========== */
.main-header {
  position: relative;
  z-index: 1000;
  background: linear-gradient(to bottom, var(--color-bg) 0%, rgba(15, 13, 21, 0.95) 100%);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
  height: var(--header-height);
  margin-bottom: 0;
}

.main-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

/* Logo区域 */
.header-logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--color-text);
  text-decoration: none;
  transition: all var(--transition-fast);
}

.header-logo:hover {
  color: var(--color-primary);
  text-decoration: none;
}

/* 搜索区域 */
.header-search {
  flex: 1;
  max-width: 500px;
  margin: 0 var(--spacing-xl);
  position: relative;
}

.search-form {
  width: 100%;
}

.search-input-wrapper {
  position: relative;
  display: flex;
  align-items: center;
}

.search-input {
  width: 100%;
  padding: var(--spacing-sm) var(--spacing-md) var(--spacing-sm) 2.5rem;
  font-size: var(--font-size-base);
  line-height: 1.5;
  color: var(--color-text);
  background-color: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  transition: all var(--transition-fast);
}

.search-input:focus {
  outline: none;
  border-color: var(--color-primary);
  background-color: var(--color-bg-elevated);
  box-shadow: 0 0 0 3px rgba(255, 107, 74, 0.1);
}

.search-input::placeholder {
  color: var(--color-text-muted);
}

.search-icon {
  position: absolute;
  left: var(--spacing-md);
  width: 18px;
  height: 18px;
  color: var(--color-text-muted);
  pointer-events: none;
  z-index: 1;
}

.search-icon-mobile {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  padding: 0;
  background: none;
  border: none;
  color: var(--color-text);
  cursor: pointer;
  transition: color var(--transition-fast);
  border-radius: var(--radius-full);
}

.search-icon-mobile:hover {
  color: var(--color-primary);
  background: var(--color-bg-card);
}

/* 搜索覆盖层 */
.search-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(0, 0, 0, 0.8);
  backdrop-filter: blur(4px);
  z-index: 2000;
  animation: fadeIn var(--transition-base);
}

.search-overlay.active {
  display: flex;
  align-items: center;
  justify-content: center;
}

.search-modal {
  width: 90%;
  max-width: 500px;
  background-color: var(--color-bg-card);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
  z-index: 2001;
  animation: slideDown var(--transition-base);
  overflow: hidden;
  border: 1px solid var(--color-border);
}

.search-modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-lg);
  border-bottom: 1px solid var(--color-border);
}

.search-modal-header h3 {
  margin: 0;
  font-size: var(--font-size-lg);
  font-weight: 600;
  color: var(--color-text);
}

.search-close-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  padding: 0;
  background: none;
  border: none;
  color: var(--color-text-muted);
  cursor: pointer;
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.search-close-btn:hover {
  background-color: var(--color-bg-elevated);
  color: var(--color-text);
}

.search-modal-body {
  padding: var(--spacing-lg);
}

.search-modal-input {
  width: 100%;
  padding: var(--spacing-md);
  font-size: var(--font-size-base);
  line-height: 1.5;
  color: var(--color-text);
  background-color: var(--color-bg-elevated);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.search-modal-input:focus {
  outline: none;
  border-color: var(--color-primary);
  background-color: var(--color-bg-card);
  box-shadow: 0 0 0 3px rgba(255, 107, 74, 0.1);
}

/* ========== 导航菜单 ========== */
.main-nav {
  background-color: var(--color-bg-secondary);
  border-bottom: 1px solid var(--color-border);
  height: var(--nav-height);
  position: relative;
  z-index: 999;
  margin-top: 0;
}

.main-nav .container {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100%;
}

.nav-list {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100%;
  list-style: none;
  gap: 0;
  margin: 0;
  padding: 0;
}

.nav-item {
  position: relative;
}

.nav-link {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100%;
  padding: 0 var(--spacing-md);
  font-size: var(--font-size-base);
  font-weight: 500;
  color: var(--color-text-secondary);
  text-decoration: none;
  transition: color var(--transition-fast);
  border-bottom: 2px solid transparent;
}

.nav-link:hover {
  color: var(--color-primary);
  text-decoration: none;
}

.nav-link.active {
  color: var(--color-primary);
  border-bottom-color: var(--color-primary);
}

/* ========== 移动端头部 ========== */
@media (max-width: 768px) {
  .main-header {
    height: 56px;
  }
  
  .header-logo {
    font-size: var(--font-size-lg);
  }
  
  .header-search {
    display: none;
  }
  
  .search-icon-mobile {
    display: block;
    width: 24px;
    height: 24px;
    color: var(--color-text);
    cursor: pointer;
  }
  
  .main-nav {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
  }
  
  .main-nav::-webkit-scrollbar {
    display: none;
  }
  
  .nav-list {
    gap: 0;
    padding: 0 var(--spacing-sm);
  }
  
  .nav-link {
    font-size: var(--font-size-sm);
    padding: 0 var(--spacing-sm);
    white-space: nowrap;
  }
  
  .search-modal {
    width: 95%;
    padding: var(--spacing-lg);
  }
}

@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

@keyframes slideDown {
  from {
    transform: translateY(-20px);
    opacity: 0;
  }
  to {
    transform: translateY(0);
    opacity: 1;
  }
}