/* ═══════════════════════════════════════════════════════════ */
/* 任务14：📬 邮件系统（公告/补偿/奖励）                        */
/* ═══════════════════════════════════════════════════════════ */

/* 顶栏邮箱按钮红点徽章 */
.mail-btn {
    position: relative;
    overflow: visible;
}
.mail-badge {
    position: absolute;
    top: 2px;
    right: 2px;
    min-width: 16px;
    height: 16px;
    padding: 0 5px;
    background: linear-gradient(135deg, #ef4444, #dc2626);
    color: #fff;
    border-radius: 10px;
    font-size: 0.7rem;
    font-weight: bold;
    line-height: 16px;
    text-align: center;
    box-shadow: 0 1px 4px rgba(239, 68, 68, 0.5);
    border: none;
    animation: mail-badge-pulse 2s ease-in-out infinite;
    pointer-events: none;
}

@keyframes mail-badge-pulse {
    0%, 100% { transform: scale(1); box-shadow: 0 2px 6px rgba(239, 68, 68, 0.5); }
    50%      { transform: scale(1.15); box-shadow: 0 3px 10px rgba(239, 68, 68, 0.8); }
}

/* 邮件卡片 */
.mail-card {
    background: #1f2937;
    border: 1px solid #374151;
    border-radius: 10px;
    padding: 12px 14px;
    margin-bottom: 10px;
    transition: all 0.2s ease;
}
.mail-card.unread {
    border-left: 3px solid #fbbf24;
    background: linear-gradient(90deg, #1f2937 0%, #2a2a2a 100%);
}
.mail-card.read {
    opacity: 0.75;
}
.mail-card:hover {
    border-color: #6b7280;
    transform: translateY(-1px);
}

.mail-card-head {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 8px;
    flex-wrap: wrap;
}
.mail-icon {
    font-size: 1.2rem;
}
.mail-title {
    font-weight: bold;
    color: #e5e7eb;
    font-size: 0.95rem;
    flex: 1;
    min-width: 0;
    word-break: break-all;
}
.mail-dot {
    display: inline-block;
    width: 8px;
    height: 8px;
    background: #fbbf24;
    border-radius: 50%;
    box-shadow: 0 0 6px #fbbf24;
}
.mail-date {
    font-size: 0.7rem;
    color: #6b7280;
}

.mail-body {
    color: #d1d5db;
    font-size: 0.85rem;
    line-height: 1.5;
    margin-bottom: 10px;
    white-space: pre-wrap;
    padding: 6px 10px;
    background: #111827;
    border-radius: 6px;
    border-left: 2px solid #374151;
}

.mail-footer {
    display: flex;
    align-items: center;
    gap: 6px;
    flex-wrap: wrap;
}
.mail-reward {
    background: linear-gradient(135deg, #7c2d12, #b45309);
    color: #fde68a;
    padding: 3px 10px;
    border-radius: 6px;
    font-size: 0.75rem;
    font-weight: bold;
    border: 1px solid #fbbf24;
}
.mail-claimed {
    color: #10b981;
    font-size: 0.75rem;
    font-weight: bold;
}

.mail-btn-claim, .mail-btn-read, .mail-btn-del {
    background: #374151;
    color: #e5e7eb;
    border: 1px solid #4b5563;
    padding: 4px 10px;
    border-radius: 6px;
    font-size: 0.75rem;
    cursor: pointer;
    transition: all 0.15s ease;
}
.mail-btn-claim {
    background: linear-gradient(135deg, #d97706, #f59e0b);
    color: #fff;
    border-color: #fbbf24;
    font-weight: bold;
}
.mail-btn-claim:hover {
    background: linear-gradient(135deg, #f59e0b, #fbbf24);
    box-shadow: 0 2px 8px rgba(251, 191, 36, 0.4);
}
.mail-btn-read:hover {
    background: #4b5563;
    border-color: #6b7280;
}
.mail-btn-del:hover {
    background: #7f1d1d;
    border-color: #ef4444;
    color: #fff;
}