.modal-backdrop {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(4px);
  z-index: 10000;
  display: flex;
  align-items: center;
  justify-content: center;
  animation: modal-fade-in 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.modal-backdrop--closing {
  animation: modal-fade-out 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.modal-content {
  position: relative;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  border-radius: 0;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
  display: flex;
  flex-direction: column;
  animation: modal-slide-up 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  overflow: hidden;
}

.modal-content--closing {
  animation: modal-slide-down 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.modal-header {
  position: absolute;
  top: 20px;
  left: 80px;
  right: 20px;
  z-index: 10001;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.modal-header-info {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 1;
  min-width: 0;
}

.modal-title {
  font-size: 1.4rem;
  font-weight: 600;
  color: white;
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.5);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.modal-repo-link {
  font-size: 0.9rem;
  color: #87ceeb;
  text-decoration: none;
  transition: all 0.2s ease;
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.5);
  white-space: nowrap;
  flex-shrink: 0;
}

.modal-repo-link:hover {
  color: #ffffff;
  text-shadow:
    0 1px 2px rgba(0, 0, 0, 0.5),
    0 0 8px rgba(135, 206, 235, 0.6);
  text-decoration: underline;
}

.modal-close-button {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  border: none;
  background: rgba(255, 255, 255, 0.2);
  backdrop-filter: blur(10px);
  color: white;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s ease;
  outline: none;
  padding: 0;
  box-sizing: border-box;
}

.modal-close-button:hover {
  background: rgba(255, 255, 255, 0.3);
  transform: translateY(2px);
}

.modal-close-button:active {
  transform: translateY(0);
  background: rgba(255, 255, 255, 0.4);
}

.modal-close-button:focus-visible {
  outline: 2px solid rgba(255, 255, 255, 0.8);
  outline-offset: 2px;
}

.modal-close-button svg {
  width: 24px;
  height: 24px;
  transition: transform 0.2s ease;
  display: block;
  flex-shrink: 0;
}

.modal-body {
  flex: 1;
  padding: 80px 40px 40px;
  overflow-y: auto;
  color: white;
}

/* 动画定义 */
@keyframes modal-fade-in {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

@keyframes modal-fade-out {
  from {
    opacity: 1;
  }
  to {
    opacity: 0;
  }
}

@keyframes modal-slide-up {
  from {
    transform: translateY(100%);
  }
  to {
    transform: translateY(0);
  }
}

@keyframes modal-slide-down {
  from {
    transform: translateY(0);
  }
  to {
    transform: translateY(100%);
  }
}

/* 确保在油猴脚本环境中不受宿主页面样式影响 */
.modal-backdrop *,
.modal-content *,
.modal-header *,
.modal-body * {
  box-sizing: border-box;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
}

/* 响应式设计 */
@media (max-width: 768px) {
  .modal-header {
    top: 16px;
    left: 20px;
    right: 16px;
  }

  .modal-header-info {
    gap: 8px;
  }

  .modal-title {
    font-size: 1.2rem;
  }

  .modal-repo-link {
    font-size: 0.85rem;
  }

  .modal-close-button {
    width: 40px;
    height: 40px;
  }

  .modal-close-button svg {
    width: 20px;
    height: 20px;
  }

  .modal-body {
    padding: 60px 20px 20px;
  }
}

@media (max-width: 480px) {
  .modal-header-info {
    gap: 6px;
  }

  .modal-title {
    font-size: 0.9rem;
  }

  .modal-repo-link {
    font-size: 0.8rem;
  }
}