/* 
 * 邮件页面专用样式
 * 邮件列表、筛选下拉框、统计卡片、邮件徽章
 */

/* 邮件列表样式定制 */
.email-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

/* 统计卡片 */
.stat-card {
    position: relative;
    overflow: hidden;
}

/* 邮件徽章 */
.email-badge {
    display: inline-block;
}

/* ===== 自定义筛选下拉框 ===== */
.filter-dropdowns-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px;
    width: 100%;
}

@media (min-width: 640px) {
    .filter-dropdowns-row {
        display: flex;
        flex-wrap: wrap;
        align-items: center;
    }
}

@media (min-width: 1280px) {
    .filter-dropdowns-row {
        width: auto;
    }
}

.filter-dropdown-container {
    position: relative;
    min-width: 0;
}

@media (min-width: 640px) {
    .filter-dropdown-container {
        flex: 0 1 auto;
    }
}

.filter-dropdown-trigger {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 8px 12px;
    border: 1px solid var(--border-color);
    background: white;
    cursor: pointer;
    border-radius: var(--radius-md);
    transition: all 0.2s ease;
    font-size: 13px;
    font-weight: 500;
    color: var(--title);
    white-space: nowrap;
    width: 100%;
}

@media (min-width: 640px) {
    .filter-dropdown-trigger {
        width: auto;
    }
}

.filter-dropdown-trigger:hover {
    background: #f1f5f9;
    border-color: #cbd5e1;
}

.filter-dropdown-container.open .filter-dropdown-trigger {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.12);
}

.filter-icon {
    font-size: 14px;
    flex-shrink: 0;
}

.filter-label {
    flex: 1;
    text-align: left;
    overflow: hidden;
    text-overflow: ellipsis;
}

.filter-arrow {
    color: var(--subtitle);
    transition: transform 0.2s ease;
    flex-shrink: 0;
}

.filter-dropdown-container.open .filter-arrow {
    transform: rotate(180deg);
}

/* 下拉面板 */
.filter-dropdown-panel {
    position: absolute;
    top: calc(100% + 6px);
    left: 0;
    min-width: 160px;
    width: max-content;
    max-width: calc(100vw - 40px);
    background: white;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.12);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    transition: all 0.2s ease;
    z-index: 200;
    max-height: 300px;
    overflow-y: auto;
}

.filter-dropdown-container.open .filter-dropdown-panel {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.filter-dropdown-list {
    padding: 6px;
}

/* 选项 */
.filter-option {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 12px;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: background 0.15s ease;
    font-size: 13px;
    color: var(--title);
    gap: 12px;
}

.filter-option:hover {
    background: #f1f5f9;
}

.filter-option.selected {
    background: #eff6ff;
}

.filter-option-text {
    flex: 1;
    white-space: nowrap;
}

.filter-option-check {
    color: var(--primary);
    opacity: 0;
    flex-shrink: 0;
    transition: opacity 0.15s ease;
}

.filter-option.selected .filter-option-check {
    opacity: 1;
}

/* 清除过滤按钮 */
.filter-clear-btn {
    flex-shrink: 0;
    white-space: nowrap;
}