/* 少女萝莉 官网 - 全局样式表 */

/* ===== 色彩系统 ===== */
:root {
  --color-primary: #0F172A;        /* 深蓝色 */
  --color-secondary: #A855F7;      /* 霓虹紫 */
  --color-accent: #06B6D4;         /* 亮青色 */
  --color-white: #FFFFFF;          /* 纯白 */
  --color-light: #F0F4F8;          /* 浅灰 */
  --color-dark: #1A1F35;           /* 暗色 */
  --color-text: #E0E7FF;           /* 浅紫文字 */
  --color-border: #2D3748;         /* 边框色 */
  
  /* 字体 */
  --font-display: 'Playfair Display', serif;
  --font-body: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  
  /* 间距 */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  --spacing-2xl: 4rem;
  
  /* 阴影 */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.2);
  --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.3);
  --shadow-glow: 0 0 20px rgba(168, 85, 247, 0.3);
  
  /* 圆角 */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  
  /* 过渡 */
  --transition-fast: 150ms ease-out;
  --transition-base: 300ms ease-out;
  --transition-slow: 500ms ease-out;
}

/* ===== 重置样式 ===== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-body);
  background-color: var(--color-primary);
  color: var(--color-text);
  line-height: 1.6;
  overflow-x: hidden;
}

/* ===== 排版 ===== */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: var(--spacing-md);
}

h1 {
  font-size: 3.5rem;
  letter-spacing: -0.02em;
}

h2 {
  font-size: 2.5rem;
  letter-spacing: -0.01em;
}

h3 {
  font-size: 1.875rem;
}

h4 {
  font-size: 1.5rem;
}

h5 {
  font-size: 1.25rem;
}

h6 {
  font-size: 1rem;
}

p {
  margin-bottom: var(--spacing-md);
  font-size: 1rem;
}

a {
  color: var(--color-secondary);
  text-decoration: none;
  transition: color var(--transition-base);
}

a:hover {
  color: var(--color-accent);
  text-decoration: underline;
}

/* ===== 容器 ===== */
.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
}

@media (max-width: 768px) {
  .container {
    padding: 0 var(--spacing-md);
  }
}

/* ===== 导航栏 ===== */
.navbar {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: linear-gradient(180deg, var(--color-primary) 0%, rgba(15, 23, 42, 0.95) 100%);
  border-bottom: 1px solid var(--color-border);
  backdrop-filter: blur(10px);
  box-shadow: var(--shadow-md);
}

.navbar-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-md) 0;
}

.navbar-logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-white);
}

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

.navbar-menu {
  display: flex;
  gap: var(--spacing-lg);
  align-items: center;
  list-style: none;
}

.navbar-menu a {
  color: var(--color-text);
  font-size: 0.95rem;
  font-weight: 500;
  transition: all var(--transition-base);
  position: relative;
}

.navbar-menu a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--color-secondary), var(--color-accent));
  transition: width var(--transition-base);
}

.navbar-menu a:hover::after {
  width: 100%;
}

.search-box {
  display: flex;
  align-items: center;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-sm) var(--spacing-md);
  gap: var(--spacing-sm);
}

.search-box input {
  background: transparent;
  border: none;
  color: var(--color-text);
  font-size: 0.9rem;
  outline: none;
  width: 150px;
}

.search-box input::placeholder {
  color: rgba(224, 231, 255, 0.5);
}

@media (max-width: 768px) {
  .navbar-menu {
    gap: var(--spacing-md);
  }
  
  .search-box {
    display: none;
  }
}

/* ===== Hero Banner ===== */
.hero {
  position: relative;
  height: 600px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  margin-bottom: var(--spacing-2xl);
}

.hero-background {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: 1;
}

.hero-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, rgba(15, 23, 42, 0.7) 0%, rgba(168, 85, 247, 0.2) 100%);
  z-index: 2;
}

.hero-content {
  position: relative;
  z-index: 3;
  text-align: center;
  color: var(--color-white);
  animation: fadeInUp 0.8s ease-out;
}

.hero-content h1 {
  font-size: 4rem;
  margin-bottom: var(--spacing-md);
  background: linear-gradient(135deg, var(--color-white) 0%, var(--color-secondary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-content p {
  font-size: 1.25rem;
  margin-bottom: var(--spacing-lg);
  color: var(--color-light);
}

.hero-cta {
  display: inline-flex;
  gap: var(--spacing-md);
}

@media (max-width: 768px) {
  .hero {
    height: 400px;
  }
  
  .hero-content h1 {
    font-size: 2.5rem;
  }
  
  .hero-content p {
    font-size: 1rem;
  }
}

/* ===== 按钮 ===== */
.btn {
  display: inline-block;
  padding: var(--spacing-sm) var(--spacing-lg);
  border-radius: var(--radius-lg);
  font-weight: 600;
  text-align: center;
  cursor: pointer;
  transition: all var(--transition-base);
  border: none;
  font-size: 1rem;
  text-decoration: none;
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-secondary) 0%, var(--color-accent) 100%);
  color: var(--color-white);
  box-shadow: var(--shadow-glow);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 30px rgba(168, 85, 247, 0.5);
}

.btn-secondary {
  background: transparent;
  color: var(--color-secondary);
  border: 2px solid var(--color-secondary);
}

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

/* ===== 卡片 ===== */
.card {
  background: linear-gradient(135deg, rgba(45, 55, 72, 0.5) 0%, rgba(45, 55, 72, 0.3) 100%);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--spacing-lg);
  backdrop-filter: blur(10px);
  transition: all var(--transition-base);
  box-shadow: var(--shadow-md);
}

.card:hover {
  transform: translateY(-4px);
  border-color: var(--color-secondary);
  box-shadow: 0 0 20px rgba(168, 85, 247, 0.2);
}

.card-title {
  font-size: 1.25rem;
  margin-bottom: var(--spacing-md);
  color: var(--color-white);
}

.card-description {
  font-size: 0.95rem;
  color: var(--color-text);
  line-height: 1.6;
}

/* ===== 视频卡片 ===== */
.video-card {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-xl);
  aspect-ratio: 16 / 9;
  cursor: pointer;
  group: video-card;
}

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

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

.video-card-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity var(--transition-base);
}

.video-card:hover .video-card-overlay {
  opacity: 1;
}

.video-play-btn {
  width: 60px;
  height: 60px;
  background: var(--color-secondary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-white);
  font-size: 24px;
  box-shadow: var(--shadow-glow);
  transition: all var(--transition-base);
}

.video-card:hover .video-play-btn {
  transform: scale(1.1);
  box-shadow: 0 0 30px rgba(168, 85, 247, 0.6);
}

/* ===== 网格布局 ===== */
.grid {
  display: grid;
  gap: var(--spacing-lg);
}

.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;
  }
}

/* ===== 分割线 ===== */
.section {
  padding: var(--spacing-2xl) 0;
  border-bottom: 1px solid var(--color-border);
}

.section:last-child {
  border-bottom: none;
}

.section-title {
  font-size: 2.5rem;
  margin-bottom: var(--spacing-xl);
  text-align: center;
  background: linear-gradient(135deg, var(--color-white) 0%, var(--color-secondary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.section-subtitle {
  font-size: 1.1rem;
  text-align: center;
  color: var(--color-text);
  margin-bottom: var(--spacing-xl);
}

/* ===== 页脚 ===== */
.footer {
  background: linear-gradient(180deg, rgba(15, 23, 42, 0.5) 0%, var(--color-dark) 100%);
  border-top: 1px solid var(--color-border);
  padding: var(--spacing-2xl) 0 var(--spacing-lg);
  margin-top: var(--spacing-2xl);
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-xl);
}

.footer-section h4 {
  margin-bottom: var(--spacing-md);
  color: var(--color-white);
}

.footer-section ul {
  list-style: none;
}

.footer-section li {
  margin-bottom: var(--spacing-sm);
}

.footer-section a {
  color: var(--color-text);
  font-size: 0.9rem;
}

.footer-bottom {
  text-align: center;
  padding-top: var(--spacing-lg);
  border-top: 1px solid var(--color-border);
  color: var(--color-text);
  font-size: 0.9rem;
}

.footer-qr {
  display: flex;
  justify-content: center;
  gap: var(--spacing-lg);
  margin: var(--spacing-lg) 0;
}

.qr-item {
  text-align: center;
}

.qr-item img {
  width: 100px;
  height: 100px;
  border-radius: var(--radius-md);
  border: 2px solid var(--color-border);
}

.qr-item p {
  margin-top: var(--spacing-sm);
  font-size: 0.85rem;
}

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

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

@keyframes slideInLeft {
  from {
    opacity: 0;
    transform: translateX(-30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

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

@keyframes pulse {
  0%, 100% {
    opacity: 1;
  }
  50% {
    opacity: 0.5;
  }
}

@keyframes glow {
  0%, 100% {
    box-shadow: 0 0 20px rgba(168, 85, 247, 0.3);
  }
  50% {
    box-shadow: 0 0 30px rgba(168, 85, 247, 0.6);
  }
}

.animate-fade-in-up {
  animation: fadeInUp 0.6s ease-out;
}

.animate-slide-in-left {
  animation: slideInLeft 0.6s ease-out;
}

.animate-slide-in-right {
  animation: slideInRight 0.6s ease-out;
}

/* ===== 响应式 ===== */
@media (max-width: 768px) {
  h1 {
    font-size: 2rem;
  }
  
  h2 {
    font-size: 1.5rem;
  }
  
  h3 {
    font-size: 1.25rem;
  }
  
  .section {
    padding: var(--spacing-xl) 0;
  }
  
  .section-title {
    font-size: 1.75rem;
  }
}

/* ===== 工具类 ===== */
.text-center {
  text-align: center;
}

.text-white {
  color: var(--color-white);
}

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

.mt-sm { margin-top: var(--spacing-sm); }
.mt-md { margin-top: var(--spacing-md); }
.mt-lg { margin-top: var(--spacing-lg); }
.mt-xl { margin-top: var(--spacing-xl); }

.mb-sm { margin-bottom: var(--spacing-sm); }
.mb-md { margin-bottom: var(--spacing-md); }
.mb-lg { margin-bottom: var(--spacing-lg); }
.mb-xl { margin-bottom: var(--spacing-xl); }

.px-md { padding: 0 var(--spacing-md); }
.px-lg { padding: 0 var(--spacing-lg); }

.py-md { padding: var(--spacing-md) 0; }
.py-lg { padding: var(--spacing-lg) 0; }

.hidden {
  display: none;
}

.flex {
  display: flex;
}

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

.gap-md {
  gap: var(--spacing-md);
}

.gap-lg {
  gap: var(--spacing-lg);
}