/* 工业工程工具集导航栏样式 */
.ie-nav-bar {
    background: linear-gradient(135deg, #2c6eac 0%, #1a3a6c 100%);
    color: white;
    padding: 12px 20px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    font-family: 'Segoe UI', 'Microsoft YaHei', sans-serif;
}

.ie-nav-container {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.ie-nav-left, .ie-nav-right {
    display: flex;
    align-items: center;
    gap: 10px;
}

.ie-nav-center {
    flex: 1;
    text-align: center;
}

.ie-nav-btn {
    background: rgba(255, 255, 255, 0.15);
    color: white;
    text-decoration: none;
    padding: 8px 16px;
    border-radius: 6px;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    transition: all 0.2s ease;
    font-size: 14px;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.ie-nav-btn:hover {
    background: rgba(255, 255, 255, 0.25);
    transform: translateY(-1px);
    box-shadow: 0 2px 8px rgba(0,0,0,0.15);
}

.ie-nav-title {
    font-size: 16px;
    font-weight: 600;
    color: white;
}

.ie-nav-current-time {
    font-size: 14px;
    opacity: 0.9;
    background: rgba(255, 255, 255, 0.1);
    padding: 6px 12px;
    border-radius: 4px;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .ie-nav-bar {
        padding: 10px 15px;
    }

    .ie-nav-container {
        flex-direction: column;
        gap: 10px;
    }

    .ie-nav-left, .ie-nav-center, .ie-nav-right {
        width: 100%;
        justify-content: center;
    }

    .ie-nav-btn span {
        display: none;
    }

    .ie-nav-btn {
        padding: 8px 12px;
    }

    .ie-nav-title {
        font-size: 14px;
    }

    .ie-nav-current-time {
        font-size: 12px;
    }
}