/* ========== 全局重置 ========== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --color-primary: #1e40af;
  --color-primary-hover: #1e3a8a;
  --color-bg: #f5f7fa;
  --color-card-bg: #ffffff;
  --color-text: #1f2937;
  --color-text-light: #6b7280;
  --color-border: #e5e7eb;
  --color-danger: #ef4444;
  --radius: 8px;
  --shadow: 0 1px 3px rgba(0, 0, 0, 0.08);
  --shadow-hover: 0 4px 12px rgba(0, 0, 0, 0.12);
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  background-color: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
}

/* ========== 布局容器 ========== */
.app-container {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* ========== 顶部导航栏 ========== */
.header {
  background-color: var(--color-card-bg);
  border-bottom: 1px solid var(--color-border);
  box-shadow: var(--shadow);
}

.header-content {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  font-size: 20px;
  font-weight: 700;
  color: var(--color-primary);
  cursor: pointer;
  user-select: none;
}

.logo:hover {
  opacity: 0.85;
}

/* ========== 用户信息区 ========== */
.user-section {
  display: flex;
  align-items: center;
}

.user-info {
  display: none;
  align-items: center;
  gap: 12px;
}

.points-label {
  font-size: 14px;
  color: var(--color-text-light);
}

.points-value {
  font-size: 18px;
  font-weight: 700;
  color: var(--color-primary);
}

/* ========== 主内容区 ========== */
.main-content {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 40px 24px;
}

.loading-state {
  text-align: center;
  color: var(--color-text-light);
  font-size: 16px;
}

/* ========== 应用卡片 ========== */
.app-card {
  background-color: var(--color-card-bg);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 48px 40px;
  max-width: 480px;
  width: 100%;
  text-align: center;
  display: none;
}

.welcome-title {
  font-size: 24px;
  font-weight: 700;
  margin-bottom: 32px;
  color: var(--color-text);
}

.info-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 0;
  border-bottom: 1px solid var(--color-border);
}

.points-row {
  margin-bottom: 32px;
}

.info-label {
  font-size: 15px;
  color: var(--color-text-light);
}

.info-value {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-text);
}

.points-big {
  font-size: 36px;
  font-weight: 800;
  color: var(--color-primary);
  line-height: 1;
}

/* ========== 按钮 ========== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: none;
  border-radius: var(--radius);
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s ease;
  min-height: 44px;
  padding: 0 20px;
  font-family: inherit;
}

.btn-primary {
  background-color: var(--color-primary);
  color: #fff;
}

.btn-primary:hover {
  background-color: var(--color-primary-hover);
  box-shadow: var(--shadow-hover);
}

.btn-large {
  width: 100%;
  font-size: 16px;
  padding: 14px 24px;
  min-height: 52px;
}

.btn-logout {
  background-color: transparent;
  color: var(--color-text-light);
  border: 1px solid var(--color-border);
  padding: 6px 16px;
  min-height: 36px;
  font-size: 13px;
}

.btn-logout:hover {
  color: var(--color-danger);
  border-color: var(--color-danger);
}

/* ========== 登录表单 ========== */
.login-form {
  text-align: left;
}

.form-row {
  margin-bottom: 20px;
}

.form-row .info-label {
  display: block;
  margin-bottom: 8px;
}

.form-input {
  width: 100%;
  height: 44px;
  padding: 0 14px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  font-size: 15px;
  font-family: inherit;
  color: var(--color-text);
  background-color: #fff;
  transition: border-color 0.2s ease;
}

.form-input:focus {
  outline: none;
  border-color: var(--color-primary);
}

.code-row {
  display: flex;
  gap: 10px;
}

.code-row .form-input {
  flex: 1;
}

.btn-outline {
  background-color: transparent;
  color: var(--color-primary);
  border: 1px solid var(--color-primary);
  white-space: nowrap;
  padding: 0 16px;
}

.btn-outline:hover {
  background-color: var(--color-primary);
  color: #fff;
}

.mock-tip {
  margin-top: 20px;
  font-size: 13px;
  color: var(--color-text-light);
  text-align: center;
}

/* ========== 响应式适配 ========== */
@media (max-width: 640px) {
  .header-content {
    padding: 0 16px;
  }

  .logo {
    font-size: 17px;
  }

  .app-card {
    padding: 32px 24px;
  }

  .welcome-title {
    font-size: 20px;
  }

  .points-big {
    font-size: 30px;
  }
}