/* 纯粹视界 - 自定义样式 */

/* 字体引入 */
@import url('https://fonts.loli.net/css2?family=Noto+Sans+SC:wght@300;400;500&display=swap');

/* 全局变量 */
:root {
  --primary-black: #000000;
  --primary-white: #FFFFFF;
  --neutral-gray: #F5F5F5;
  --hover-scale: 1.03;
  --transition-smooth: all 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

/* 全局重置与基础样式 */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, sans-serif;
  font-weight: 300;
  color: var(--primary-black);
  background-color: var(--primary-white);
  overflow-x: hidden;
}

/* 平滑滚动 */
html {
  scroll-behavior: smooth;
}

/* 导航栏样式 */
.nav-glass {
  backdrop-filter: blur(10px);
  background: rgba(255, 255, 255, 0.9);
  transition: var(--transition-smooth);
}

.nav-logo {
  font-size: 1.25rem;
  font-weight: 400;
  letter-spacing: 0.1em;
  transition: var(--transition-smooth);
}

.nav-link {
  position: relative;
  font-size: 0.9rem;
  letter-spacing: 0.05em;
  transition: var(--transition-smooth);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 50%;
  width: 0;
  height: 1px;
  background: var(--primary-black);
  transition: var(--transition-smooth);
  transform: translateX(-50%);
}

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

/* 轮播图样式 */
.hero-slider {
  position: relative;
  height: 100vh;
  overflow: hidden;
}

.hero-slide {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  transition: opacity 1.2s ease-in-out;
}

.hero-slide.active {
  opacity: 1;
  z-index: 1;
}

.hero-slide img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

.hero-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(180deg, rgba(0,0,0,0.3) 0%, rgba(0,0,0,0.1) 100%);
  z-index: 2;
}

.hero-text {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  z-index: 3;
  text-align: center;
  color: var(--primary-white);
  font-size: 3.5rem;
  font-weight: 300;
  letter-spacing: 0.15em;
  text-shadow: 0 2px 20px rgba(0,0,0,0.3);
}

.hero-explore {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 3;
  animation: bounce 2s infinite;
}

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

/* 图片网格样式 */
.image-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  padding: 2rem;
}

.image-card {
  position: relative;
  overflow: hidden;
  cursor: pointer;
  aspect-ratio: 3/4;
  transition: var(--transition-smooth);
}

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

.image-card:hover img {
  transform: scale(var(--hover-scale));
  filter: brightness(0.9);
}

.image-card-overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  padding: 1.5rem;
  background: linear-gradient(180deg, transparent 0%, rgba(0,0,0,0.7) 100%);
  color: var(--primary-white);
  opacity: 0;
  transition: var(--transition-smooth);
  transform: translateY(20px);
}

.image-card:hover .image-card-overlay {
  opacity: 1;
  transform: translateY(0);
}

/* 系列模块样式 */
.collection-module {
  margin-bottom: 6rem;
  opacity: 0;
  transform: translateY(40px);
  transition: var(--transition-smooth);
}

.collection-module.visible {
  opacity: 1;
  transform: translateY(0);
}

.collection-title {
  font-size: 2.5rem;
  font-weight: 300;
  letter-spacing: 0.1em;
  margin-bottom: 1rem;
}

.collection-subtitle {
  font-size: 1rem;
  font-weight: 300;
  letter-spacing: 0.05em;
  color: #666;
  margin-bottom: 2rem;
  font-style: italic;
}

/* 模态弹窗样式 */
.modal-backdrop {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.95);
  z-index: 9998;
  opacity: 0;
  transition: opacity 0.4s ease;
  pointer-events: none;
}

.modal-backdrop.active {
  opacity: 1;
  pointer-events: all;
}

.modal-container {
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%) scale(0.9);
  max-width: 90vw;
  max-height: 90vh;
  overflow-y: auto;
  z-index: 9999;
  opacity: 0;
  transition: var(--transition-smooth);
  pointer-events: none;
}

.modal-container.active {
  opacity: 1;
  transform: translate(-50%, -50%) scale(1);
  pointer-events: all;
}

.modal-close {
  position: fixed;
  top: 2rem;
  right: 2rem;
  width: 40px;
  height: 40px;
  cursor: pointer;
  z-index: 10000;
  transition: var(--transition-smooth);
}

.modal-close:hover {
  transform: rotate(90deg);
}

/* 美学关键词标签 */
.aesthetic-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: center;
  margin-bottom: 3rem;
}

.aesthetic-tag {
  padding: 0.75rem 1.5rem;
  border: 1px solid var(--primary-black);
  background: transparent;
  cursor: pointer;
  transition: var(--transition-smooth);
  font-size: 0.9rem;
  letter-spacing: 0.05em;
}

.aesthetic-tag:hover,
.aesthetic-tag.active {
  background: var(--primary-black);
  color: var(--primary-white);
}

/* 页脚样式 */
footer {
  text-align: center;
  padding: 3rem 0;
  border-top: 1px solid #e5e5e5;
  margin-top: 6rem;
}

.footer-text {
  font-size: 0.875rem;
  letter-spacing: 0.1em;
  color: #666;
}

/* 加载动画 */
.loading-spinner {
  display: inline-block;
  width: 40px;
  height: 40px;
  border: 3px solid rgba(0, 0, 0, 0.1);
  border-top-color: var(--primary-black);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* 响应式设计 */
@media (max-width: 768px) {
  .hero-text {
    font-size: 2rem;
  }
  
  .collection-title {
    font-size: 1.75rem;
  }
  
  .image-grid {
    grid-template-columns: 1fr;
    gap: 1rem;
    padding: 1rem;
  }
  
  .modal-container {
    max-width: 95vw;
  }
  
  .modal-close {
    top: 1rem;
    right: 1rem;
  }
}

/* 性能优化 */
.lazy-load {
  opacity: 0;
  transition: opacity 0.6s ease;
}

.lazy-load.loaded {
  opacity: 1;
}

/* 无障碍优化 */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}

/* 聚焦样式 */
*:focus-visible {
  outline: 2px solid var(--primary-black);
  outline-offset: 2px;
}