:root {
  /* 默认主题 - 深海蓝 */
  --primary-bg: linear-gradient(135deg, #0f1c30, #1a2a6c);
  --card-bg: rgba(0, 0, 0, 0.3);
  --primary-text: #ffffff;
  --accent-color: #4fc3f7;
  --secondary-accent: #ffd700;
  --header-color: #ffd700;
  --stats-color: #4fc3f7;
  --item-bg: rgba(255, 255, 255, 0.05);
  --sponsor-border: #4fc3f7;
  --seat-border: #ffd700;
  --shadow-color: rgba(0, 0, 0, 0.5);
}

/* 浅色主题 */
.theme-light {
  --primary-bg: linear-gradient(135deg, #f5f7fa, #e4e8f0);
  --card-bg: rgba(255, 255, 255, 0.8);
  --primary-text: #2d3748;
  --accent-color: #3182ce;
  --secondary-accent: #d69e2e;
  --header-color: #2b6cb0;
  --stats-color: #4a5568;
  --item-bg: rgba(0, 0, 0, 0.05);
  --sponsor-border: #3182ce;
  --seat-border: #d69e2e;
  --shadow-color: rgba(0, 0, 0, 0.1);
}

/* 深紫色主题 */
.theme-purple {
  --primary-bg: linear-gradient(135deg, #1a1a2e, #4a154b);
  --card-bg: rgba(0, 0, 0, 0.4);
  --primary-text: #f0e6ef;
  --accent-color: #9f7aea;
  --secondary-accent: #faf089;
  --header-color: #faf089;
  --stats-color: #9f7aea;
  --item-bg: rgba(255, 255, 255, 0.08);
  --sponsor-border: #9f7aea;
  --seat-border: #faf089;
  --shadow-color: rgba(0, 0, 0, 0.6);
}

/* 绿色主题 */
.theme-green {
  --primary-bg: linear-gradient(135deg, #0a2f1d, #1a3c2b);
  --card-bg: rgba(0, 0, 0, 0.35);
  --primary-text: #e6fffa;
  --accent-color: #38b2ac;
  --secondary-accent: #fefcbf;
  --header-color: #fefcbf;
  --stats-color: #38b2ac;
  --item-bg: rgba(255, 255, 255, 0.06);
  --sponsor-border: #38b2ac;
  --seat-border: #fefcbf;
  --shadow-color: rgba(0, 0, 0, 0.55);
}

/* 红色主题 */
.theme-red {
  --primary-bg: linear-gradient(135deg, #2a0e0e, #8b0000);
  --card-bg: rgba(0, 0, 0, 0.4);
  --primary-text: #ffe6e6;
  --accent-color: #ff6b6b;
  --secondary-accent: #ffd93d;
  --header-color: #ffd93d;
  --stats-color: #ff6b6b;
  --item-bg: rgba(255, 255, 255, 0.08);
  --sponsor-border: #ff6b6b;
  --seat-border: #ffd93d;
  --shadow-color: rgba(0, 0, 0, 0.6);
}

/* 橙色主题 */
.theme-orange {
  --primary-bg: linear-gradient(135deg, #332211, #cc5500);
  --card-bg: rgba(0, 0, 0, 0.35);
  --primary-text: #fff5e6;
  --accent-color: #ff8c42;
  --secondary-accent: #ffd700;
  --header-color: #ffd700;
  --stats-color: #ff8c42;
  --item-bg: rgba(255, 255, 255, 0.07);
  --sponsor-border: #ff8c42;
  --seat-border: #ffd700;
  --shadow-color: rgba(0, 0, 0, 0.55);
}

/* 粉色主题 */
.theme-pink {
  --primary-bg: linear-gradient(135deg, #2e1a2e, #8a2be2);
  --card-bg: rgba(0, 0, 0, 0.4);
  --primary-text: #fce4ec;
  --accent-color: #ff6ec7;
  --secondary-accent: #a5d6ff;
  --header-color: #a5d6ff;
  --stats-color: #ff6ec7;
  --item-bg: rgba(255, 255, 255, 0.08);
  --sponsor-border: #ff6ec7;
  --seat-border: #a5d6ff;
  --shadow-color: rgba(0, 0, 0, 0.6);
}

/* 金色奢华主题 */
.theme-gold {
  --primary-bg: linear-gradient(135deg, #1a1818, #4a3c2a);
  --card-bg: rgba(0, 0, 0, 0.5);
  --primary-text: #f8ecc9;
  --accent-color: #c5a572;
  --secondary-accent: #ffd700;
  --header-color: #ffd700;
  --stats-color: #c5a572;
  --item-bg: rgba(200, 170, 100, 0.1);
  --sponsor-border: #c5a572;
  --seat-border: #ffd700;
  --shadow-color: rgba(0, 0, 0, 0.7);
}

/* 科技蓝主题 */
.theme-tech {
  --primary-bg: linear-gradient(135deg, #001425, #003a5d);
  --card-bg: rgba(0, 30, 60, 0.6);
  --primary-text: #e0f7ff;
  --accent-color: #00c8ff;
  --secondary-accent: #00ffcc;
  --header-color: #00ffcc;
  --stats-color: #00c8ff;
  --item-bg: rgba(0, 200, 255, 0.1);
  --sponsor-border: #00c8ff;
  --seat-border: #00ffcc;
  --shadow-color: rgba(0, 40, 80, 0.7);
}

/* 深色简约主题 */
.theme-dark-minimal {
  --primary-bg: linear-gradient(135deg, #0a0a0a, #2d2d2d);
  --card-bg: rgba(40, 40, 40, 0.7);
  --primary-text: #e0e0e0;
  --accent-color: #7c7c7c;
  --secondary-accent: #ffffff;
  --header-color: #ffffff;
  --stats-color: #7c7c7c;
  --item-bg: rgba(255, 255, 255, 0.05);
  --sponsor-border: #7c7c7c;
  --seat-border: #ffffff;
  --shadow-color: rgba(0, 0, 0, 0.8);
}

/* 日落主题 */
.theme-sunset {
  --primary-bg: linear-gradient(135deg, #0f1c30, #e25822);
  --card-bg: rgba(0, 0, 0, 0.4);
  --primary-text: #fff5e6;
  --accent-color: #ff8c42;
  --secondary-accent: #ffd93d;
  --header-color: #ffd93d;
  --stats-color: #ff8c42;
  --item-bg: rgba(255, 255, 255, 0.08);
  --sponsor-border: #ff8c42;
  --seat-border: #ffd93d;
  --shadow-color: rgba(0, 0, 0, 0.6);
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  transition: background-color 0.5s ease, color 0.5s ease, transform 0.3s ease;
}

body {
  background: var(--primary-bg);
  color: var(--primary-text);
  font-family: "Microsoft YaHei", sans-serif;
  padding: 20px;
  overflow-x: hidden;
  min-height: 100vh;
}

.container {
  max-width: 1800px;
  margin: auto;
  position: relative;
}

.theme-panel {
  position: fixed;
  top: 50%;
  right: 20px;
  transform: translateY(-50%);
  display: flex;
  flex-direction: column;
  gap: 12px;
  z-index: 100;
  background: var(--card-bg);
  padding: 15px;
  border-radius: 20px;
  box-shadow: 0 5px 20px var(--shadow-color);
  backdrop-filter: blur(5px);
}

.theme-btn {
  width: 30px;
  height: 30px;
  border-radius: 50%;
  border: 2px solid var(--primary-text);
  cursor: pointer;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.theme-btn:hover {
  transform: scale(1.15);
  box-shadow: 0 0 10px var(--secondary-accent);
}

.theme-btn.active {
  transform: scale(1.2);
  box-shadow: 0 0 15px var(--secondary-accent);
}

.theme-default {
  background: linear-gradient(135deg, #0f1c30, #1a2a6c);
}

.theme-light-btn {
  background: linear-gradient(135deg, #f5f7fa, #e4e8f0);
}

.theme-purple-btn {
  background: linear-gradient(135deg, #1a1a2e, #4a154b);
}

.theme-green-btn {
  background: linear-gradient(135deg, #0a2f1d, #1a3c2b);
}

.theme-red-btn {
  background: linear-gradient(135deg, #2a0e0e, #8b0000);
}

.theme-orange-btn {
  background: linear-gradient(135deg, #332211, #cc5500);
}

.theme-pink-btn {
  background: linear-gradient(135deg, #2e1a2e, #8a2be2);
}

.theme-gold-btn {
  background: linear-gradient(135deg, #1a1818, #4a3c2a);
}

.theme-tech-btn {
  background: linear-gradient(135deg, #001425, #003a5d);
}

.theme-dark-minimal-btn {
  background: linear-gradient(135deg, #0a0a0a, #2d2d2d);
}

.theme-sunset-btn {
  background: linear-gradient(135deg, #0f1c30, #e25822);
}

.header,
.footer {
  text-align: center;
  padding: 30px;
  background: var(--card-bg);
  border-radius: 20px;
  box-shadow: 0 10px 30px var(--shadow-color);
  backdrop-filter: blur(10px);
  margin-bottom: 30px;
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.footer {
  margin-top: 30px;
  padding: 20px;
}

h1 {
  font-size: 2rem;
  color: var(--header-color);
  margin-bottom: 15px;
  text-shadow: 0 2px 10px var(--shadow-color);
  letter-spacing: 1.5px;
}

a {
  color: var(--accent-color);
  text-decoration: none;
  transition: color 0.3s ease;
}

.subtitle {
  font-size: 1.5rem;
  color: var(--primary-text);
  opacity: 0.9;
  margin-bottom: 25px;
}

.stats {
  display: flex;
  justify-content: center;
  gap: 50px;
  margin: 25px 0;
}

.stats div {
  font-size: 3rem;
  color: var(--stats-color);
  font-weight: bold;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 20px;
  background: var(--item-bg);
  border-radius: 12px;
}

.stats i {
  font-size: 2.2rem;
}

.main-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 30px;
  margin-top: 20px;
}

.section {
  background: var(--card-bg);
  border-radius: 20px;
  padding: 30px;
  height: 650px;
  position: relative;
  overflow: hidden;
  box-shadow: 0 10px 30px var(--shadow-color);
  backdrop-filter: blur(5px);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.section h2 {
  text-align: center;
  color: var(--accent-color);
  margin-bottom: 25px;
  font-size: 2.4rem;
  text-shadow: 0 1px 5px var(--shadow-color);
  position: relative;
  padding-bottom: 12px;
}

.section h2:after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 100px;
  height: 4px;
  background: var(--secondary-accent);
  border-radius: 4px;
}

.scroll-container {
  height: 540px;
  overflow: hidden;
  position: relative;
  border-radius: 15px;
  margin-top: 15px;
}

.scroll-content {
  position: absolute;
  width: 100%;
}

.sponsor-item,
.seat-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 25px;
  margin: 15px 0;
  background: var(--item-bg);
  border-radius: 12px;
  font-size: 1.7rem;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.sponsor-item:hover,
.seat-item:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 20px var(--shadow-color);
}

.sponsor-item {
  border-left: 6px solid var(--sponsor-border);
}

.seat-item {
  border-left: 6px solid var(--seat-border);
}

.amount {
  color: var(--secondary-accent);
  font-weight: bold;
  font-size: 1.8rem;
}

.scroll-content {
  animation: scroll 40s linear infinite;
}

.scroll-content:hover {
  animation-play-state: paused;
}

@keyframes scroll {
  0% {
    transform: translateY(0);
  }
  100% {
    transform: translateY(-50%);
  }
}

/* 响应式设计 */
@media (max-width: 1200px) {
  .main-content {
    grid-template-columns: 1fr;
  }

  h1 {
    font-size: 3rem;
  }

  .stats {
    gap: 20px;
  }
}

@media (max-width: 768px) {
  .stats {
    flex-direction: column;
    gap: 15px;
  }

  .header,
  .footer {
    padding: 20px;
  }

  .section {
    padding: 20px;
    height: 500px;
  }

  .scroll-container {
    height: 400px;
  }

  .theme-panel {
    top: auto;
    bottom: 20px;
    right: 20px;
    flex-direction: row;
    transform: none;
  }
}