:root {
  --primary-color: #00bcd4;
  --background-color: #1a1a1a;
  --card-background: #2d2d2d;
  --text-color: #ffffff;
  --text-secondary: #b0b0b0;
  --border-color: #404040;
  --shadow-color: rgba(0, 0, 0, 0.3);
  --accent-color: #00e5ff;
  --success-color: #00e676;
  --error-color: #ff1744;
}

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

body {
  font-family: "Segoe UI", "Microsoft YaHei", sans-serif;
  background: var(--background-color);
  color: var(--text-color);
  line-height: 1.6;
  min-height: 100vh;
}

.app {
  display: flex;
  min-height: 100vh;
}

/* 侧边栏样式 */
.sidebar {
  width: 280px;
  background: var(--card-background);
  padding: 2rem;
  position: fixed;
  left: 0;
  top: 0;
  bottom: 0;
  box-shadow: 2px 0 8px var(--shadow-color);
}

.logo {
  margin-bottom: 2rem;
  padding-bottom: 2rem;
  border-bottom: 1px solid var(--border-color);
}

.logo h1 {
  font-size: 1.5rem;
  font-weight: 500;
  color: var(--accent-color);
}

.stats {
  display: grid;
  gap: 1.5rem;
}

.stat-item {
  background: rgba(255, 255, 255, 0.05);
  padding: 1.5rem;
  border-radius: 12px;
  transition: transform 0.2s;
}

.stat-item:hover {
  transform: translateY(-2px);
  background: rgba(255, 255, 255, 0.08);
}

.stat-label {
  color: var(--text-secondary);
  font-size: 0.875rem;
  margin-bottom: 0.5rem;
}

.stat-value {
  font-size: 2rem;
  font-weight: 600;
  color: var(--accent-color);
}

/* 主内容区域 */
.main-content {
  flex: 1;
  margin-left: 280px;
  padding: 2rem;
}

.content-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 2rem;
}

.content-header h2 {
  font-size: 1.75rem;
  font-weight: 500;
}

.page-info {
  color: var(--text-secondary);
}

/* 卡片网格 */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: 1.5rem;
  margin-bottom: 3rem;
}

.card-item {
  background: var(--card-background);
  padding: 1.5rem;
  border-radius: 12px;
  box-shadow: 0 4px 6px var(--shadow-color);
  cursor: pointer;
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.card-item::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
  opacity: 0;
  transition: opacity 0.3s;
}

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

.card-item:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 12px var(--shadow-color);
}

.card-content {
  font-size: 1.125rem;
  text-align: center;
  word-break: break-all;
}

.masked .card-content {
  color: var(--text-secondary);
}

.mask-text {
  display: inline-block;
  padding: 0.5rem 1rem;
  background: rgba(255, 255, 255, 0.05);
  border-radius: 4px;
  font-size: 0.875rem;
}

.card-meta {
  margin-top: 1rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border-color);
  font-size: 0.875rem;
  color: var(--text-secondary);
  text-align: center;
}

/* 分页样式 */
.pagination {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 0.5rem;
}

.pagination a,
.page-ellipsis {
  min-width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--card-background);
  border-radius: 8px;
  color: var(--text-color);
  text-decoration: none;
  font-size: 0.875rem;
  transition: all 0.2s;
}

.pagination a:hover {
  background: var(--primary-color);
  color: var(--background-color);
}

.pagination a.active {
  background: var(--primary-color);
  color: var(--background-color);
}

.page-btn svg {
  width: 24px;
  height: 24px;
  fill: currentColor;
}

.page-ellipsis {
  cursor: default;
  color: var(--text-secondary);
}

/* 模态框样式 */
.modal-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.8);
  backdrop-filter: blur(8px);
  z-index: 998;
}

.verify-modal {
  display: none;
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  z-index: 999;
  width: 90%;
  max-width: 400px;
}

.modal-content {
  background: var(--card-background);
  border-radius: 16px;
  box-shadow: 0 8px 32px var(--shadow-color);
  overflow: hidden;
}

.modal-header {
  padding: 1.5rem;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.modal-header h3 {
  font-size: 1.25rem;
  font-weight: 500;
}

.close-btn {
  background: none;
  border: none;
  color: var(--text-secondary);
  font-size: 1.5rem;
  cursor: pointer;
  padding: 0.5rem;
  margin: -0.5rem;
  transition: color 0.2s;
}

.close-btn:hover {
  color: var(--text-color);
}

.modal-body {
  padding: 2rem;
}

#captchaText {
  font-size: 2.5rem;
  font-family: monospace;
  text-align: center;
  letter-spacing: 8px;
  margin: 1.5rem 0;
  padding: 1.5rem;
  background: rgba(255, 255, 255, 0.05);
  border-radius: 8px;
  user-select: none;
}

#captchaInput {
  width: 100%;
  padding: 1rem;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  color: var(--text-color);
  font-size: 1.25rem;
  text-align: center;
  letter-spacing: 4px;
  margin: 1rem 0;
  transition: border-color 0.2s;
}

#captchaInput:focus {
  outline: none;
  border-color: var(--primary-color);
}

.hint {
  font-size: 0.875rem;
  color: var(--text-secondary);
  text-align: center;
  margin-bottom: 1.5rem;
}

.verify-btn {
  width: 100%;
  padding: 1rem;
  background: var(--primary-color);
  color: var(--background-color);
  border: none;
  border-radius: 8px;
  font-size: 1rem;
  font-weight: 500;
  cursor: pointer;
  transition: background 0.2s;
}

.verify-btn:hover {
  background: var(--accent-color);
}

/* Toast 提示 */
.toast {
  position: fixed;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%) translateY(100px);
  background: var(--card-background);
  color: var(--text-color);
  padding: 1rem 2rem;
  border-radius: 8px;
  box-shadow: 0 4px 12px var(--shadow-color);
  opacity: 0;
  transition: transform 0.3s, opacity 0.3s;
}

.toast.show {
  transform: translateX(-50%) translateY(0);
  opacity: 1;
}

.verify-modal input {
  text-align: center;
  font-size: 24px;
  letter-spacing: 4px;
  text-transform: uppercase;
}