@import url('https://fonts.googleapis.com/css2?family=DM+Serif+Display:ital@0;1&family=DM+Sans:ital,opsz,wght@0,9..40,100..1000;1,9..40,100..1000&display=swap');

:root {
  /* 色彩系统 - 避免通用AI色彩 */
  --color-primary: #8B1A1A;        /* 深红 - 激情与竞技 */
  --color-primary-light: #A52A2A;
  --color-secondary: #C9A227;      /* 金色 - 荣耀与奖杯 */
  --color-accent: #2D5016;         /* 深绿 - 球场草地 */
  --color-cream: #F5F0E6;          /* 奶油白 - 温暖 */
  --color-charcoal: #1C1C1C;       /* 炭灰 - 深沉 */
  --color-warm-gray: #4A4A4A;      /* 暖灰 */
  --color-light-gray: #E8E4DC;     /* 浅暖灰 */

  /* 字体 */
  --font-display: 'DM Serif Display', Georgia, serif;
  --font-body: 'DM Sans', -apple-system, sans-serif;

  /* 间距 */
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2.5rem;
  --space-xl: 4rem;

  /* 过渡 */
  --ease-out-expo: cubic-bezier(0.16, 1, 0.3, 1);
  --transition-fast: 150ms var(--ease-out-expo);
  --transition-normal: 300ms var(--ease-out-expo);
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: var(--font-body);
  background-color: var(--color-charcoal);
  min-height: 100vh;
  color: var(--color-cream);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

/* 背景纹理 - 替代纯色渐变 */
body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image:
    radial-gradient(circle at 20% 80%, rgba(139, 26, 26, 0.15) 0%, transparent 50%),
    radial-gradient(circle at 80% 20%, rgba(201, 162, 39, 0.1) 0%, transparent 50%);
  pointer-events: none;
  z-index: -1;
}

/* 网格纹理叠加 */
body::after {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
  background-size: 60px 60px;
  pointer-events: none;
  z-index: -1;
}

header {
  position: relative;
  padding: var(--space-xl) var(--space-md);
  text-align: left;
  max-width: 900px;
  margin: 0 auto;
}

header::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 4px;
  height: 70%;
  background: linear-gradient(to bottom, var(--color-secondary), var(--color-primary));
}

header h1 {
  font-family: var(--font-display);
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 400;
  letter-spacing: -0.02em;
  line-height: 1.1;
  color: var(--color-cream);
  margin-bottom: var(--space-sm);
}

header h1 .emoji {
  font-style: normal;
  margin-right: 0.3em;
}

.subtitle {
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 400;
  color: var(--color-secondary);
  letter-spacing: 0.15em;
  text-transform: uppercase;
}

main {
  max-width: 900px;
  margin: 0 auto;
  padding: var(--space-lg) var(--space-md);
}

/* 预测卡片 - 非对称设计 */
.prediction-card {
  position: relative;
  margin-bottom: var(--space-lg);
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 2px;
  overflow: hidden;
  transition: transform var(--transition-normal),
              box-shadow var(--transition-normal);
}

.prediction-card:hover {
  transform: translateX(8px);
  box-shadow: -8px 0 30px rgba(139, 26, 26, 0.2);
}

.prediction-card::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: linear-gradient(to bottom, var(--color-secondary), transparent);
  opacity: 0;
  transition: opacity var(--transition-fast);
}

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

.card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-md) var(--space-md);
  cursor: pointer;
  user-select: none;
  transition: background var(--transition-fast);
}

.card-header:hover {
  background: rgba(255, 255, 255, 0.03);
}

.date {
  font-family: var(--font-display);
  font-size: 1.4rem;
  font-weight: 400;
  color: var(--color-cream);
  letter-spacing: 0.02em;
}

.toggle-icon {
  font-size: 0.75rem;
  color: var(--color-secondary);
  transition: transform var(--transition-fast);
}

.card-content {
  display: none;
  padding: 0 var(--space-md) var(--space-md) var(--space-md);
  border-top: 1px solid rgba(255, 255, 255, 0.06);
}

/* 内容样式 */
.card-content h1,
.card-content h2,
.card-content h3 {
  font-family: var(--font-display);
  color: var(--color-cream);
  margin: var(--space-md) 0 var(--space-sm) 0;
  letter-spacing: -0.01em;
}

.card-content h1 {
  font-size: 1.5rem;
  color: var(--color-secondary);
}

.card-content h2 {
  font-size: 1.25rem;
}

.card-content h3 {
  font-size: 1.1rem;
  color: var(--color-light-gray);
}

.card-content p {
  margin-bottom: var(--space-sm);
  line-height: 1.8;
  color: var(--color-light-gray);
}

.card-content ul,
.card-content ol {
  margin: var(--space-sm) 0;
  padding-left: var(--space-md);
}

.card-content li {
  margin-bottom: var(--space-xs);
  color: var(--color-light-gray);
}

.card-content table {
  width: 100%;
  border-collapse: collapse;
  margin: var(--space-md) 0;
  font-size: 0.95rem;
}

.card-content th,
.card-content td {
  padding: var(--space-sm);
  text-align: left;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.card-content th {
  font-family: var(--font-body);
  font-weight: 600;
  color: var(--color-secondary);
  text-transform: uppercase;
  font-size: 0.75rem;
  letter-spacing: 0.1em;
}

.card-content tr:hover {
  background: rgba(255, 255, 255, 0.03);
}

.card-content strong {
  color: var(--color-secondary);
  font-weight: 600;
}

.empty-state {
  text-align: center;
  padding: var(--space-xl);
  background: rgba(255, 255, 255, 0.03);
  border: 1px dashed rgba(255, 255, 255, 0.1);
  color: var(--color-warm-gray);
}

.empty-state p {
  margin: var(--space-xs) 0;
}

footer {
  text-align: left;
  padding: var(--space-lg) var(--space-md);
  max-width: 900px;
  margin: 0 auto;
  font-size: 0.85rem;
  color: var(--color-warm-gray);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
}

/* 响应式设计 */
@media (max-width: 768px) {
  header {
    padding: var(--space-lg) var(--space-md);
  }

  header h1 {
    font-size: clamp(1.8rem, 8vw, 2.5rem);
  }

  .subtitle {
    font-size: 0.85rem;
  }

  main {
    padding: var(--space-md);
  }

  .prediction-card {
    margin-bottom: var(--space-md);
  }

  .prediction-card:hover {
    transform: none;
  }

  .card-header {
    padding: var(--space-sm);
  }

  .date {
    font-size: 1.2rem;
  }

  .card-content {
    padding: 0 var(--space-sm) var(--space-sm) var(--space-sm);
  }

  .card-content table {
    font-size: 0.85rem;
  }

  .card-content th,
  .card-content td {
    padding: var(--space-xs);
  }
}

@media (max-width: 480px) {
  header {
    padding: var(--space-md);
  }

  header::before {
    height: 50%;
  }
}

/* 动画关键帧 */
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.prediction-card {
  animation: fadeIn 0.6s var(--ease-out-expo) both;
}

.prediction-card:nth-child(1) { animation-delay: 0.1s; }
.prediction-card:nth-child(2) { animation-delay: 0.2s; }
.prediction-card:nth-child(3) { animation-delay: 0.3s; }
.prediction-card:nth-child(4) { animation-delay: 0.4s; }
.prediction-card:nth-child(5) { animation-delay: 0.5s; }