/* ===== 短链接工具样式 ===== */
:root {
  --primary: #2563eb;
  --primary-hover: #1d4ed8;
  --danger: #dc2626;
  --danger-hover: #b91c1c;
  --success: #16a34a;
  --bg: #f8fafc;
  --card-bg: #fff;
  --border: #e2e8f0;
  --text: #1e293b;
  --text-secondary: #64748b;
  --radius: 10px;
}

body { background: var(--bg); color: var(--text); min-height: 100vh }
main { max-width: 960px; margin: 0 auto; padding: 16px 12px 40px }

/* 卡片 */
.card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  margin-bottom: 16px;
}
.card h2 { margin: 0 0 12px; font-size: 16px; font-weight: 600 }
.hint { font-size: 12px; color: var(--text-secondary); margin: 0 0 12px }

/* 模式徽章 */
.mode-badge {
  font-size: 11px;
  padding: 2px 8px;
  border-radius: 4px;
  background: #fef3c7;
  color: #92400e;
  font-weight: 600;
}
.mode-badge.normal { background: #d1fae5; color: #065f46 }

/* 表单 */
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px }
.form-row { display: flex; flex-direction: column; gap: 4px }
.form-row.full { grid-column: 1 / -1 }
.form-row label { font-size: 13px; font-weight: 500; color: var(--text-secondary) }
.form-row .req { color: var(--danger) }
.form-row input, .form-row select {
  padding: 8px 10px;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 14px;
  outline: none;
  transition: border-color .15s;
}
.form-row input:focus, .form-row select:focus { border-color: var(--primary) }
.form-actions { margin-top: 14px; display: flex; gap: 8px }

/* 按钮 */
.btn {
  padding: 8px 16px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: #fff;
  cursor: pointer;
  font-size: 13px;
  transition: all .15s;
}
.btn:hover { background: #f1f5f9 }
.btn:disabled { opacity: .5; cursor: not-allowed }
.btn-primary { background: var(--primary); color: #fff; border-color: var(--primary) }
.btn-primary:hover { background: var(--primary-hover) }
.btn-danger { background: var(--danger); color: #fff; border-color: var(--danger) }
.btn-danger:hover { background: var(--danger-hover) }
.btn-sm { padding: 4px 10px; font-size: 12px }
.btn-link {
  border: none; background: none; color: var(--primary);
  cursor: pointer; font-size: 12px; padding: 2px 4px; text-decoration: underline;
}

/* 别名网格 */
.alias-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 8px }
.alias-item {
  display: flex; align-items: center; gap: 8px;
  padding: 8px 12px;
  background: #f1f5f9;
  border-radius: 6px;
  font-size: 13px;
}
.alias-item code {
  background: #e0e7ff;
  padding: 1px 6px;
  border-radius: 4px;
  font-size: 12px;
  font-weight: 600;
  color: var(--primary);
}
.alias-item .alias-target { color: var(--text-secondary); font-size: 12px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap }

/* 列表 */
.list-header { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 8px; margin-bottom: 12px }
.list-header h2 { margin: 0 }
.list-toolbar { display: flex; gap: 6px; align-items: center }
.list-toolbar input {
  padding: 6px 10px;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 13px;
  width: 200px;
  outline: none;
}
.list-toolbar input:focus { border-color: var(--primary) }

.table-wrap { overflow-x: auto }
table { width: 100%; border-collapse: collapse; font-size: 13px }
th { text-align: left; padding: 8px 10px; border-bottom: 2px solid var(--border); color: var(--text-secondary); font-weight: 600; white-space: nowrap }
td { padding: 8px 10px; border-bottom: 1px solid var(--border); vertical-align: middle }
tr:hover td { background: #f8fafc }

.short-url { font-weight: 600; color: var(--primary); cursor: pointer; white-space: nowrap }
.short-url:hover { text-decoration: underline }
.target-url { max-width: 220px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; color: var(--text-secondary); font-size: 12px }
.status-active { color: var(--success); font-weight: 600 }
.status-inactive { color: var(--danger); font-weight: 600 }
.status-expired { color: #d97706; font-weight: 600 }
.actions { display: flex; gap: 4px; flex-wrap: nowrap }

/* 分页 */
.pagination { display: flex; justify-content: center; gap: 6px; margin-top: 12px }
.pagination button {
  padding: 4px 10px; border: 1px solid var(--border); border-radius: 4px;
  background: #fff; cursor: pointer; font-size: 12px;
}
.pagination button.active { background: var(--primary); color: #fff; border-color: var(--primary) }
.pagination button:disabled { opacity: .4; cursor: not-allowed }

/* 弹窗 */
.interaction-modal-body { max-height: 80vh; overflow-y: auto; width: 600px }
.interaction-content {
  background: #1e293b; color: #e2e8f0; border-radius: 6px;
  padding: 12px; font-family: 'Cascadia Code', 'Fira Code', monospace;
  font-size: 12px; line-height: 1.6; white-space: pre-wrap; word-break: break-all;
  max-height: 50vh; overflow-y: auto;
}
.countdown { font-size: 12px; color: var(--text-secondary); margin-left: auto }

.confirm-modal-body { width: 400px }
.edit-modal-body { width: 520px }
.stats-modal-body { width: 600px; max-height: 80vh; overflow-y: auto }

.stats-summary {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; margin-bottom: 12px;
}
.stat-box {
  background: #f1f5f9; border-radius: 6px; padding: 10px; text-align: center;
}
.stat-box .stat-num { font-size: 22px; font-weight: 700; color: var(--primary) }
.stat-box .stat-label { font-size: 11px; color: var(--text-secondary); margin-top: 2px }

.stats-clicks { max-height: 40vh; overflow-y: auto }
.click-row {
  display: flex; gap: 12px; padding: 6px 0; border-bottom: 1px solid var(--border);
  font-size: 12px; color: var(--text-secondary);
}
.click-row .click-time { white-space: nowrap; color: var(--text) }

/* Toast */
.toast {
  position: fixed; bottom: 24px; left: 50%; transform: translateX(-50%);
  padding: 10px 20px; border-radius: 8px; font-size: 13px; color: #fff;
  z-index: 2000; transition: opacity .3s; box-shadow: 0 4px 12px rgba(0,0,0,.15);
}
.toast.info { background: var(--primary) }
.toast.success { background: var(--success) }
.toast.error { background: var(--danger) }

/* 空状态 */
.empty-state { text-align: center; padding: 32px; color: var(--text-secondary); font-size: 14px }

/* 响应式 */
@media (max-width: 640px) {
  .form-grid { grid-template-columns: 1fr }
  .alias-grid { grid-template-columns: 1fr }
  .list-header { flex-direction: column; align-items: flex-start }
  .list-toolbar { width: 100% }
  .list-toolbar input { flex: 1; width: auto }
  .stats-summary { grid-template-columns: 1fr }
}