/**
 * 《绛唇解语花》组件样式
 * Reusable UI Components
 */

/* ========================================
   触摸反馈 - 涟漪效果
   ======================================== */

/* 涟漪容器 */
.ripple-container {
    position: relative;
    overflow: hidden;
}

/* 涟漪动画 */
.ripple {
    position: absolute;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.4);
    transform: scale(0);
    animation: ripple-animation 0.6s ease-out forwards;
    pointer-events: none;
}

@keyframes ripple-animation {
    to {
        transform: scale(4);
        opacity: 0;
    }
}

/* 深色涟漪（用于浅色背景按钮） */
.ripple-dark {
    background: rgba(183, 110, 121, 0.2);
}

/* 按钮按下效果 */
.btn:active,
.card:active,
.chapter-card:active {
    transform: scale(0.98);
}

/* 触摸高亮 */
@media (hover: none) {
    .btn,
    .card,
    .chapter-card,
    .toc-nav-item a,
    .nav-link {
        -webkit-tap-highlight-color: transparent;
    }

    .btn:active {
        transform: scale(0.95);
        transition: transform 0.1s ease;
    }
}

/* ========================================
   按钮组件
   ======================================== */

/* 基础按钮 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.875rem 2rem;
  font-family: var(--font-sans);
  font-size: 1rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  border: none;
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: all var(--duration-normal) var(--ease-smooth);
  text-decoration: none;
  white-space: nowrap;
  /* 涟漪效果支持 */
  position: relative;
  overflow: hidden;
  /* 最小点击区域 */
  min-height: 48px;
  min-width: 48px;
}

/* 主按钮 - 玫瑰金渐变 */
.btn-primary {
  background: var(--gradient-rose);
  color: white;
  box-shadow: 0 4px 15px rgba(183, 110, 121, 0.25);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(183, 110, 121, 0.35);
}

.btn-primary:active {
  transform: translateY(0);
}

/* 次级按钮 - 毛玻璃效果 */
.btn-secondary {
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  color: var(--rose-gold);
  border: 1px solid var(--rose-gold-light);
}

.btn-secondary:hover {
  background: white;
  transform: translateY(-2px);
  box-shadow: var(--shadow-soft);
}

/* 幽灵按钮 */
.btn-ghost {
  background: transparent;
  color: var(--rose-gold);
  border: 1px solid var(--rose-gold);
}

.btn-ghost:hover {
  background: var(--rose-gold);
  color: white;
}

/* 小按钮 */
.btn-sm {
  padding: 0.625rem 1.5rem;
  font-size: 0.875rem;
}

/* 大按钮 */
.btn-lg {
  padding: 1.125rem 2.5rem;
  font-size: 1.125rem;
}

/* ========================================
   卡片组件
   ======================================== */

.card {
  background: white;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-soft);
  overflow: hidden;
  transition: all var(--duration-normal) var(--ease-smooth);
}

.card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-strong);
}

/* 卡片头部色块 */
.card-header {
  height: 100px;
  background: var(--gradient-rose);
  position: relative;
}

/* 不同深浅的卡片头部变体 */
.card-header-light {
  background: linear-gradient(135deg, #D4A5A5 0%, #E8C8C8 100%);
}

.card-header-soft {
  background: linear-gradient(135deg, #C4858E 0%, #D4A5A5 100%);
}

.card-header-deep {
  background: linear-gradient(135deg, #9A5B65 0%, #B76E79 100%);
}

/* 卡片内容区域 */
.card-body {
  padding: 1.5rem;
}

.card-title {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text-dark);
  margin-bottom: 0.75rem;
}

.card-subtitle {
  font-size: 0.875rem;
  color: var(--rose-gold);
  font-weight: 500;
  margin-bottom: 0.5rem;
  letter-spacing: 0.05em;
}

.card-desc {
  font-size: 0.9375rem;
  color: var(--text-medium);
  line-height: 1.6;
}

/* 可点击卡片 */
.card-link {
  display: block;
  text-decoration: none;
  color: inherit;
}

/* ========================================
   章节编号标签
   ======================================== */

.chapter-badge {
  display: inline-block;
  padding: 0.375rem 1rem;
  font-size: 0.8125rem;
  font-weight: 600;
  color: white;
  background: var(--gradient-rose);
  border-radius: var(--radius-full);
  letter-spacing: 0.05em;
}

.chapter-badge-outline {
  background: transparent;
  color: var(--rose-gold);
  border: 1px solid var(--rose-gold);
}

/* ========================================
   分割线
   ======================================== */

.divider {
  height: 2px;
  background: linear-gradient(90deg,
    transparent 0%,
    var(--rose-gold-light) 20%,
    var(--rose-gold-light) 80%,
    transparent 100%
  );
  border: none;
  margin: 2rem 0;
}

.divider-short {
  width: 60px;
  height: 3px;
  background: var(--gradient-rose);
  border-radius: 2px;
  margin: 1rem auto;
}

/* ========================================
   容器
   ======================================== */

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
}

.container-narrow {
  max-width: 800px;
}

.container-wide {
  max-width: 1400px;
}

@media (max-width: 768px) {
  .container {
    padding: 0 1rem;
  }
}

/* ========================================
   标题组件
   ======================================== */

.section-header {
  text-align: center;
  margin-bottom: 3rem;
}

.section-title {
  font-size: 2rem;
  font-weight: 300;
  color: var(--text-dark);
  letter-spacing: 0.1em;
  margin-bottom: 0.75rem;
}

.section-subtitle {
  font-size: 1rem;
  color: var(--text-light);
  font-weight: 400;
}

/* ========================================
   网格系统
   ======================================== */

.grid {
  display: grid;
  gap: 2rem;
}

.grid-2 {
  grid-template-columns: repeat(2, 1fr);
}

.grid-3 {
  grid-template-columns: repeat(3, 1fr);
}

.grid-4 {
  grid-template-columns: repeat(4, 1fr);
}

@media (max-width: 1024px) {
  .grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .grid-2,
  .grid-3,
  .grid-4 {
    grid-template-columns: 1fr;
  }
}

/* ========================================
   Tab 切换组件
   ======================================== */

.tabs {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 2rem;
  margin-bottom: 2rem;
}

.tab-item {
  position: relative;
  padding: 0.75rem 0;
  font-size: 1rem;
  color: var(--text-medium);
  cursor: pointer;
  transition: color var(--duration-fast) var(--ease-smooth);
  background: none;
  border: none;
  font-family: inherit;
}

.tab-item::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 6px;
  height: 6px;
  background: var(--rose-gold);
  border-radius: 50%;
  opacity: 0;
  transition: opacity var(--duration-fast) var(--ease-smooth);
}

.tab-item:hover {
  color: var(--rose-gold);
}

.tab-item.active {
  color: var(--rose-gold);
  font-weight: 500;
}

.tab-item.active::after {
  opacity: 1;
}

.tab-content {
  display: none;
}

.tab-content.active {
  display: block;
  animation: fadeIn var(--duration-normal) var(--ease-smooth);
}

/* ========================================
   工具卡片
   ======================================== */

.tool-card {
  background: white;
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  text-align: center;
  box-shadow: var(--shadow-soft);
}

.tool-card-title {
  font-size: 1.5rem;
  font-weight: 500;
  color: var(--text-dark);
  margin-bottom: 1rem;
}

.tool-card-desc {
  font-size: 1rem;
  color: var(--text-medium);
  line-height: 1.7;
  margin-bottom: 2rem;
}

/* ========================================
   动画关键帧
   ======================================== */

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

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

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

@keyframes scaleIn {
  from {
    opacity: 0;
    transform: scale(0.9);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

@keyframes float {
  0%, 100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-10px);
  }
}

@keyframes pulse-soft {
  0%, 100% {
    opacity: 1;
  }
  50% {
    opacity: 0.6;
  }
}

/* 动画类 */
.animate-fade-in {
  animation: fadeIn var(--duration-slow) var(--ease-smooth);
}

.animate-fade-in-up {
  animation: fadeInUp var(--duration-slow) var(--ease-smooth);
}

.animate-scale-in {
  animation: scaleIn var(--duration-slow) var(--ease-smooth);
}

/* 滚动触发动画 - 初始状态 */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.6s var(--ease-smooth);
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* 延迟动画 */
.delay-1 { animation-delay: 0.1s; transition-delay: 0.1s; }
.delay-2 { animation-delay: 0.2s; transition-delay: 0.2s; }
.delay-3 { animation-delay: 0.3s; transition-delay: 0.3s; }
.delay-4 { animation-delay: 0.4s; transition-delay: 0.4s; }
.delay-5 { animation-delay: 0.5s; transition-delay: 0.5s; }

/* ========================================
   阅读进度条
   ======================================== */

.reading-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  background: var(--gradient-rose);
  z-index: 9999;
  transition: width 0.1s linear;
}

/* ========================================
   页脚
   ======================================== */

.footer {
  background: var(--gradient-blush);
  padding: 4rem 2rem 2rem;
  margin-top: 6rem;
}

.footer-content {
  max-width: 800px;
  margin: 0 auto;
  text-align: center;
}

.footer-title {
  font-size: 1.25rem;
  font-weight: 500;
  color: var(--text-dark);
  margin-bottom: 0.5rem;
}

.footer-subtitle {
  font-size: 0.9375rem;
  color: var(--text-medium);
  margin-bottom: 2rem;
}

.footer-info {
  background: white;
  border-radius: var(--radius-md);
  padding: 1.5rem;
  margin-bottom: 1.5rem;
  box-shadow: var(--shadow-soft);
}

.footer-info h4 {
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--rose-gold);
  margin-bottom: 0.75rem;
}

.footer-info p {
  font-size: 0.875rem;
  color: var(--text-medium);
  margin-bottom: 0.25rem;
  line-height: 1.6;
}

.footer-copyright {
  font-size: 0.8125rem;
  color: var(--text-light);
  margin-top: 2rem;
  padding-top: 2rem;
  border-top: var(--border-light);
}

/* ========================================
   工具提示
   ======================================== */

.tooltip {
  position: relative;
}

.tooltip::after {
  content: attr(data-tooltip);
  position: absolute;
  bottom: 100%;
  left: 50%;
  transform: translateX(-50%);
  padding: 0.5rem 1rem;
  background: var(--text-dark);
  color: white;
  font-size: 0.8125rem;
  border-radius: var(--radius-sm);
  white-space: nowrap;
  opacity: 0;
  visibility: hidden;
  transition: all var(--duration-fast) var(--ease-smooth);
}

.tooltip:hover::after {
  opacity: 1;
  visibility: visible;
  bottom: calc(100% + 8px);
}

/* ========================================
   响应式隐藏
   ======================================== */

@media (max-width: 768px) {
  .hide-mobile {
    display: none !important;
  }
}

@media (min-width: 769px) {
  .hide-desktop {
    display: none !important;
  }
}