/* ============================================
   VenusSound - 组件样式
   按钮、卡片、导航等UI组件
   ============================================ */

/* ============================================
   导航栏
   ============================================ */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-height);
  background: rgba(10, 10, 15, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--color-border);
  z-index: 1000;
  transition: background var(--transition-base);
}

.navbar.scrolled {
  background: rgba(10, 10, 15, 0.95);
}

.navbar-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  max-width: var(--container-wide);
  margin: 0 auto;
  padding: 0 var(--spacing-xl);
}

.navbar-brand {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.navbar-logo {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--color-text-primary);
  letter-spacing: -0.02em;
}

.navbar-logo .highlight {
  color: var(--color-accent-cyan);
}

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

.nav-link {
  position: relative;
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: var(--spacing-sm) 0;
  transition: color var(--transition-fast);
}

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

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--gradient-accent);
  transition: width var(--transition-base);
}

.nav-link:hover::after,
.nav-link.active::after {
  width: 100%;
}

/* 语言切换器 */
.lang-switcher {
  display: flex;
  align-items: center;
  gap: 4px;
  margin-left: var(--spacing-lg);
}

.lang-switcher a {
  padding: 4px 10px;
  font-size: var(--text-xs);
  font-weight: 500;
  border-radius: var(--radius-sm);
  text-decoration: none;
  color: var(--color-text-muted);
  transition: all var(--transition-fast);
  border: 1px solid transparent;
}

.lang-switcher a:hover {
  color: var(--color-text-primary);
  border-color: var(--color-border);
}

.lang-switcher a.active {
  background: var(--color-accent-cyan);
  color: var(--color-bg-primary);
  border-color: var(--color-accent-cyan);
}

/* 移动端菜单按钮 */
.navbar-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: var(--spacing-sm);
  cursor: pointer;
}

.navbar-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-text-primary);
  transition: transform var(--transition-fast);
}

/* ============================================
   按钮
   ============================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-md) var(--spacing-xl);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-radius: var(--radius-md);
  transition: all var(--transition-base);
  cursor: pointer;
  border: none;
  text-decoration: none;
}

.btn-primary {
  background: var(--gradient-accent);
  color: var(--color-bg-primary);
  box-shadow: var(--shadow-glow-cyan);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 30px var(--color-accent-cyan-glow);
  color: var(--color-bg-primary);
}

.btn-secondary {
  background: transparent;
  color: var(--color-text-primary);
  border: 1px solid var(--color-border);
}

.btn-secondary:hover {
  border-color: var(--color-accent-cyan);
  color: var(--color-accent-cyan);
  background: rgba(0, 212, 255, 0.05);
}

.btn-ghost {
  background: transparent;
  color: var(--color-text-secondary);
  padding: var(--spacing-sm) var(--spacing-md);
}

.btn-ghost:hover {
  color: var(--color-accent-cyan);
}

.btn-icon {
  width: 44px;
  height: 44px;
  padding: 0;
  border-radius: var(--radius-full);
}

.btn-lg {
  padding: var(--spacing-lg) var(--spacing-2xl);
  font-size: var(--text-base);
}

.btn-sm {
  padding: var(--spacing-sm) var(--spacing-md);
  font-size: var(--text-xs);
}

/* ============================================
   卡片
   ============================================ */
.card {
  background: var(--gradient-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  overflow: hidden;
  transition: all var(--transition-base);
}

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

.card-image {
  position: relative;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: var(--color-bg-tertiary);
}

.card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.card:hover .card-image img {
  transform: scale(1.05);
}

.card-content {
  padding: var(--spacing-xl);
}

.card-title {
  font-size: var(--text-xl);
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
}

.card-description {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-lg);
  line-height: 1.7;
}

.card-meta {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  flex-wrap: wrap;
}

/* ============================================
   标签
   ============================================ */
.tag {
  display: inline-flex;
  align-items: center;
  padding: var(--spacing-xs) var(--spacing-md);
  font-size: var(--text-xs);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-radius: var(--radius-full);
  background: rgba(0, 212, 255, 0.1);
  color: var(--color-accent-cyan);
  border: 1px solid rgba(0, 212, 255, 0.2);
}

.tag-orange {
  background: rgba(255, 107, 53, 0.1);
  color: var(--color-accent-orange);
  border-color: rgba(255, 107, 53, 0.2);
}

.tag-purple {
  background: rgba(168, 85, 247, 0.1);
  color: var(--color-accent-purple);
  border-color: rgba(168, 85, 247, 0.2);
}

/* ============================================
   插件卡片（特殊样式）
   ============================================ */
.plugin-card {
  position: relative;
  background: var(--gradient-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  overflow: hidden;
  transition: all var(--transition-base);
}

.plugin-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient-accent);
  opacity: 0;
  transition: opacity var(--transition-base);
}

.plugin-card:hover {
  border-color: var(--color-accent-cyan);
  transform: translateY(-6px);
  box-shadow: var(--shadow-xl), var(--shadow-glow-cyan);
}

.plugin-card:hover::before {
  opacity: 1;
}

.plugin-card-header {
  position: relative;
  aspect-ratio: 16 / 10;
  background: var(--color-bg-tertiary);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.plugin-card-header .plugin-icon {
  font-size: 4rem;
  opacity: 0.6;
}

.plugin-card-body {
  padding: var(--spacing-xl);
}

.plugin-card-title {
  font-family: var(--font-mono);
  font-size: var(--text-lg);
  font-weight: 600;
  margin-bottom: var(--spacing-xs);
  color: var(--color-text-primary);
}

.plugin-card-type {
  font-size: var(--text-xs);
  color: var(--color-accent-cyan);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: var(--spacing-md);
}

.plugin-card-desc {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  line-height: 1.6;
  margin-bottom: var(--spacing-lg);
}

.plugin-card-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

/* ============================================
   表格
   ============================================ */
.table-wrapper {
  overflow-x: auto;
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
}

.table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--text-sm);
}

.table th,
.table td {
  padding: var(--spacing-md) var(--spacing-lg);
  text-align: left;
  border-bottom: 1px solid var(--color-border);
}

.table th {
  background: var(--color-bg-tertiary);
  font-weight: 600;
  color: var(--color-text-primary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-size: var(--text-xs);
}

.table td {
  color: var(--color-text-secondary);
}

.table tbody tr:hover {
  background: var(--color-bg-elevated);
}

.table tbody tr:last-child td {
  border-bottom: none;
}

/* ============================================
   页脚
   ============================================ */
.footer {
  background: var(--color-bg-secondary);
  border-top: 1px solid var(--color-border);
  padding: var(--spacing-3xl) 0 var(--spacing-xl);
}

.footer-container {
  display: grid;
  grid-template-columns: 2fr repeat(3, 1fr);
  gap: var(--spacing-3xl);
  margin-bottom: var(--spacing-3xl);
}

.footer-brand {
  max-width: 300px;
}

.footer-brand .navbar-logo {
  margin-bottom: var(--spacing-md);
}

.footer-brand p {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.7;
}

.footer-title {
  font-size: var(--text-sm);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: var(--spacing-lg);
  color: var(--color-text-primary);
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.footer-link {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  transition: color var(--transition-fast);
}

.footer-link:hover {
  color: var(--color-accent-cyan);
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: var(--spacing-xl);
  border-top: 1px solid var(--color-border);
}

.footer-copyright {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

.footer-social {
  display: flex;
  gap: var(--spacing-md);
}

.social-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  background: var(--color-bg-tertiary);
  color: var(--color-text-secondary);
  transition: all var(--transition-fast);
}

.social-link:hover {
  background: var(--color-accent-cyan);
  color: var(--color-bg-primary);
}

/* ============================================
   移动端响应式
   ============================================ */
@media (max-width: 1024px) {
  .footer-container {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .footer-brand {
    grid-column: span 2;
    max-width: 100%;
  }
}

@media (max-width: 768px) {
  .navbar-nav {
    position: fixed;
    top: var(--nav-height);
    left: 0;
    right: 0;
    background: var(--color-bg-secondary);
    flex-direction: column;
    padding: var(--spacing-xl);
    gap: var(--spacing-md);
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
    border-bottom: 1px solid var(--color-border);
  }
  
  .navbar-nav.open {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }
  
  .navbar-toggle {
    display: flex;
  }
  
  .nav-link {
    font-size: var(--text-base);
    padding: var(--spacing-md) 0;
  }
  
  .footer-container {
    grid-template-columns: 1fr;
    gap: var(--spacing-2xl);
  }
  
  .footer-brand {
    grid-column: 1;
  }
  
  .footer-bottom {
    flex-direction: column;
    gap: var(--spacing-lg);
    text-align: center;
  }
}