/* ==========================
   通用布局
========================== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: Arial, sans-serif;
}

body {
  background-color: #f5f5f5;
  color: #333;
  line-height: 1.6;
}

/* 容器 */
.container {
  width: 90%;
  max-width: 1200px;
  margin: 0 auto;
}

/* 导航栏 */
.navbar {
  background-color: #0d47a1;
  color: #fff;
  padding: 1rem 0;
}
.navbar .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.navbar .logo {
  font-size: 1.5rem;
}
.navbar nav a {
  color: #fff;
  text-decoration: none;
  margin-left: 1rem;
}

/* 按钮 */
.btn-primary {
  background-color: #ffca28;
  color: #0d47a1;
  padding: 0.6rem 1.2rem;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  text-decoration: none;
}
.btn-secondary {
  background-color: #1976d2;
  color: #fff;
  padding: 0.4rem 0.8rem;
  border-radius: 4px;
  text-decoration: none;
}

/* Banner */
.banner-section {
  background: url('../images/banner.jpg') no-repeat center center;
  background-size: cover;
  padding: 6rem 0;
  text-align: center;
  color: #fff;
}
.banner-section h2 {
  font-size: 2.5rem;
  margin-bottom: 1rem;
}
.banner-section p {
  font-size: 1.2rem;
  margin-bottom: 2rem;
}

/* 表单 */
.auth-section {
  padding: 4rem 0;
}
.auth-container {
  background-color: #fff;
  padding: 2rem;
  border-radius: 6px;
  max-width: 400px;
  margin: 0 auto;
  box-shadow: 0 0 10px rgba(0,0,0,0.1);
}
.form-group {
  margin-bottom: 1rem;
}
.form-group label {
  display: block;
  margin-bottom: 0.3rem;
}
.form-group input, .form-group select {
  width: 100%;
  padding: 0.5rem;
  border-radius: 4px;
  border: 1px solid #ccc;
}

/* 比赛卡片 */
.match-card {
  background-color: #fff;
  padding: 1rem;
  border-radius: 6px;
  margin-bottom: 1rem;
  box-shadow: 0 0 5px rgba(0,0,0,0.1);
}

/* 表格 */
table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: 2rem;
}
table th, table td {
  padding: 0.8rem;
  text-align: left;
  border-bottom: 1px solid #ddd;
}

/* 页脚 */
.footer {
  background-color: #0d47a1;
  color: #fff;
  padding: 1rem 0;
  text-align: center;
}

/* 响应式 */
@media (max-width: 768px) {
  .navbar .container {
    flex-direction: column;
  }
  .navbar nav a {
    margin-left: 0;
    margin-top: 0.5rem;
  }
  .banner-section {
    padding: 4rem 1rem;
  }
}